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RMAJEC9D–Common scab Streptomyces scabies lesions and pustules on a potato tuber Scab is a common bacterial disease on potatoes
RM2ANAHT5–A text-book of mycology and plant pathology . ine,separate, or bound into coremia,or layer-like cushions. The con-idiospores may exist as oidio-spores through the separation ofthe hyphae. The conidiophoresare simple, or branched. Theconidiospores of different shapesand colors are borne in a varietyof ways on the conidiophores ortheir branches. The genera maybe arranged in three series. A. Mycelium and spores light-colored: Oospora, Monilia,Oidium, Sporoirichum, Botrytis, Cephalothecium, Ramularia, Cercos-porella, Piricularia. B. Mycelium dark-colored at least with age; sporesgenerally dark: Fu
RMPFXBBD–. Bacteriology and mycology of foods. Food. RHIZOPUS—MUCOR-OIDIUM 205 lactis (oospora lactis) is often classified with yeasts and has then been given the name Mycoderma lactis. The molds are set apart from bac- teria and yeasts in that they are multicellular. The following varieties may be met with in a microbiological examination of foods. Rhizopus. The most common member of this group is Rhizopus nigricans. It is the common black bread mold and may be responsible for other food spoilage. Stevens (1917) has shown that this fungus causes the rot of strawberries during shipment. This work verif
RMMCNGNC–. Fig. 10 TYPES OF CONIDIAL FRUCTIFICATIONS 1. Sphaeropsis. 2. Graphium (conid. stage of Rosellinia). 3. 4. Cercospora. 5. Aspergillus. 6. Penicillium. '. Macrosporium. 8. Alternaria tenuis. 9. Oospora. 10. MucoR (Zygomycetes). 11. Monilia. 12. GlOEOSPORIUM LINDEMUTHIANUM. 13. FUSARIUM. 14. DiPLODIA. After Nat. Pflam.
RMT1HJWH–Diseases of economic plants (1910) Diseases of economic plants diseasesofeconom00stev Year: 1910 208 DISEASES OF ECONOMIC PLANTS tive to sugar beets in Germany. It has been reported from several places in the United States. Air-slaked Hme, 60 to 70 bushels per acre, has been recommended. Scab {Oospora scabies Thaxt.). — This scab resembles closely the scab of the Irish potato and is caused by the same fungus. It usually covers more completely the sur- Fiu. 94. — Potato sf.ab on beets. face of the beet than in the case of the potato, and tends more to form corky growths upon the surface t
RM2AJFRKC–Redia . ?# n ^^s^i. Fig. 2. — Oospora Saceardìana. Micelio e conidi. da coltura in gelatina. (Dauna fotografìa). iSTella fìgura 2 (Tav. I.) sono appunto rappresentati frammenti dimicelio delle diverse dimensioni, disegnati con camera lucida adeguale ingrandimento. Quelli più sottili derivano da coltura in NITOVA MUCEDINEA DEL « CEROPLASTES RUSCl » 13 gelatina (10 7o) con aggiunta «li jMX-a .salda damido, quelli piùglossi da coltura in gelatina nutritiva, (6 7o)- Altre volte, particolarmente nei substrati succosi, si osservanonel decorso del micelio, e talora anche alla sua estremità, dei ri-go
![. Minnesota plant diseases. Plant diseases. i26 Minnesota Plant Diseases. Potato scab {Oospora scabies Thaxt.). Potato scab is an ex- ceedingly common disease of potatoes. The cause has been the subject of some dispute among botanists but it is now gen- erally accepted that the common form of potato scab in Amer- ica is due to a parasitic fungus, while the European scab has a very different cause. The American potato-scab fungus be- longs to the group of "imperfect" fungi and is found amongst the white, loose-spored forms. Scabby potatoes when freshly removed from the soil show a ver Stock Photo](https://c8.alamy.com/comp/PG4EPG/minnesota-plant-diseases-plant-diseases-i26-minnesota-plant-diseases-potato-scab-oospora-scabies-thaxt-potato-scab-is-an-ex-ceedingly-common-disease-of-potatoes-the-cause-has-been-the-subject-of-some-dispute-among-botanists-but-it-is-now-gen-erally-accepted-that-the-common-form-of-potato-scab-in-amer-ica-is-due-to-a-parasitic-fungus-while-the-european-scab-has-a-very-different-cause-the-american-potato-scab-fungus-be-longs-to-the-group-of-quotimperfectquot-fungi-and-is-found-amongst-the-white-loose-spored-forms-scabby-potatoes-when-freshly-removed-from-the-soil-show-a-ver-PG4EPG.jpg ". Minnesota plant diseases. Plant diseases. i26 Minnesota Plant Diseases. Potato scab {Oospora scabies Thaxt.). Potato scab is an ex- ceedingly common disease of potatoes. The cause has been the subject of some dispute among botanists but it is now gen- erally accepted that the common form of potato scab in Amer- ica is due to a parasitic fungus, while the European scab has a very different cause. The American potato-scab fungus be- longs to the group of "imperfect" fungi and is found amongst the white, loose-spored forms. Scabby potatoes when freshly removed from the soil show a ver Stock Photo")
RMPG4EPG–. Minnesota plant diseases. Plant diseases. i26 Minnesota Plant Diseases. Potato scab {Oospora scabies Thaxt.). Potato scab is an ex- ceedingly common disease of potatoes. The cause has been the subject of some dispute among botanists but it is now gen- erally accepted that the common form of potato scab in Amer- ica is due to a parasitic fungus, while the European scab has a very different cause. The American potato-scab fungus be- longs to the group of "imperfect" fungi and is found amongst the white, loose-spored forms. Scabby potatoes when freshly removed from the soil show a ver
RMMCKA18–. Fig. 120. — Potato scab, a, natural ; b, produced by inocula- tion forming monogram R. T. After Conn. Agr. Exp. Sta. danger of tuber infection and consequent rot is lessened by delaying the harvest of the tubers until at least a week or ten days after the death of the foliage.1 Scab (Oospora scabies Thaxt.). — Potato scab prevails in Europe, Africa, New Zealand, in all parts of the United States, and probably everywhere the potato is grown. Though practically all American potato scab may be classed as one disease, there is some evidence that there is more than one form of disease which passe
RMT3W3AD–Archive image from page 113 of Die Natürlichen Pflanzenfamilien nebst ihren. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet dienatrlichenp0101engl Year: 1897 Fig. SO. -Leptolegnia catidata De Bary. A Oogonien tragender Hauptfaden; B reife Oospora. (A 160/1, -à 500/1.) (Nach De Bary.) Fig. 81. Aphanomyces stellatus De Bary. A Faden mit Schwärmsporenköpfiehen; .à Scliwärmsporen; COogonien mit Antheridien: D reife Oospore (390/1). (Nach De Bary.) und ausschwärm
RM2CEM07D–. The bacteriology of the eye. 4. #■ Fig. 70.—Uhthoff and Axenfeld, Keratomycosis Aspergillixa.Vegetable foreign body with mycelium. sible, as no spore formation was obtained (Oospora ascoform ! Verti-cillium rubrum ?). Halbertsma also found that the Aspergillus flarescens was patho-genic for the cornea of the rabbit. Aspergillus niger, A. Jicuum,A. wentii, and to a very slight extent the A. candidus, have beendescribed as having a moderate degree of pathogenicity for the corneaof the rabbit, and to a certain extent also for the vitreous and thechoroid. A. glaucus, ostianus, minimus, clavatus,
RMPG4EPB–. Diseases of economic plants . Plant diseases. 208 DISEASES OF ECONOMIC PLANTS tive to sugar beets in Germany. It has been reported from several places in the United States. Air-slaked lime, 60 to 70 bushels per acre, has been recommended. Scab (Oospora scabies Thaxt.). — This scab resembles closely the scab of the Irish potato and is caused by the same fungus.' It usually covers more completely the sur-. FiG. 94. — Potato scab on beets. face of the beet than in the case of the potato, and tends more to form corky growths upon the surface than to make deep cavities. Usually the corky growth t
RMME4YHN–. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet . J?ifr. 219. A^Oospora candidnla Sacc. C'onidienträger, vergr. — SO. lactis (Fres.) Sacc. 3 (a 6 c) Individuen ans Knlturen 600/1. — C Halohyssus moniliformis Zuk. Zweig mit Sporenbildung, stark vergr. — D Fusidium carneo- lum Sacc. C'onidienketten mit Trägern , stark vergr. — E CyUndriitm elongatum Bon. 460/1. — F PoUjscytalum fecundissimum Riess 200/1. — O P. griseum Sacc. Conidienträger, vergr. — H Oeotrichum cand
RM2CE0M7N–. The Bermuda lily disease : a preliminary report of investigations . Fig. 3.—Upper and under view of a mite: a, upper view; b, under view (magnified titty times). I / -^ I h. Fi<i. 4.—Diseased bulb showing work of mitea. them useless to the plant. In our colonization experiments, roots wereoften found to be worthless in less than a week after being attacked bythe mites.The burrows of the mite open the way for several fungi and bacteria, 12 which under favorable conditions greatly aid in the destruction of thetissues attacked. One of the most important of these is Oospora sp.,a minute fun
RMMAB570–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . Oospora variabilis (Lindn.). Verschiedene Formen des Mycels und der Sporenbildung. (600 : 1.) Nach Lindner. Gliederzellen, die leicht auseinander fallen oder Sporen mit kleinen kugligen Sprosskonidien oder hefeähnliche Kolonien bildend. Auf feucht gehaltenem Weissbrot in Berlin (Lindner). Der Pilz ist ausserordentlich vielgestaltig. Er wächst entweder in lockeren, bald auseinander fallenden Fäden wie 0. lactis oder lässt seine Einzelzellen sofort hefeartig aussprossen. Daneben finden sich Torula- und Dematiu
RMRPX489–. Agriculture of Maine : ... annual report of the Commissioner of Agriculture of the State of Maine. Agriculture -- Maine. Common scab, caused by Oospora Scabies —Thaxter.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Maine. Dept. of Agriculture. Augusta : [State of Maine, Dept. of Agriculture
RMMCTK93–. Fig. 76. Pythiopsis cyinosa De Bary. A Faden mit Schwärmsporensporangien ; B Oogon mit Antheridien; C reife Oospora. (A lüO/1, B, £? 750/1.) (Nach De Bary.) I. Pythiopsis De Bary. Schwärmsporensporangien endstUndig, in cymöser An- ordnung oder reihenweise hintereinander, eiförmig, nach der Entleerung nie durch- wachsend. Schwärnisporen mit 2 endstän- digen Cilien, aus der Sporangienöffnung ausschwärmend und sich gleich zerstreuend, ohne Häutung, nachdem sie zur Ruhe gekom- men, sofort keimend. Oosporangien rundlich, glatt,meist Isporig. Oosporen kugelig. Fig.76.) 1 Art, P. cymosa De Bary. My
RMRPX47X–. Agriculture of Maine : ... annual report of the Commissioner of Agriculture of the State of Maine. Agriculture -- Maine. Common scab, caused by Oospora Scabies —Thaxter.. Powdery scab, ordinary stage after having the tops of the pustules removed by rubbing against other tubers—the usual appearance when collected from storage bins in winter.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Maine. Dept. of Agriculture. Augu
![. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . ^ / Peronospora. â a P. arborescens. Ein Oogon mit heranreifender, von Peri- plasma (pZ) umgebener Oospora, a Antheridium (Vergr. 500, nach de Bary). 6â/" Keife Oosporen von verschiedener Structur: h P. calotheca, c P. Myoso- tidis, d P. Valcrianellae, e P. Corydalis, die verhältnissmässig dünn- wandige Oospore (osp) bleibt hier in das dickwandige Oogon (o//) eingeschlossen, /â P. Ho lost ei (bâf nach der Natur, Vergr. 300). mit Warzen oder zu einem Netzwerk vereinigten kräftigen Leisten besetzt ist Stock Photo](https://c8.alamy.com/comp/MAB5TE/dr-l-rabenhorsts-kryptogamen-flora-von-deutschland-oesterreich-und-der-schweiz-peronospora-a-p-arborescens-ein-oogon-mit-heranreifender-von-peri-plasma-pz-umgebener-oospora-a-antheridium-vergr-500-nach-de-bary-6quot-keife-oosporen-von-verschiedener-structur-h-p-calotheca-c-p-myoso-tidis-d-p-valcrianellae-e-p-corydalis-die-verhltnissmssig-dnn-wandige-oospore-osp-bleibt-hier-in-das-dickwandige-oogon-o-eingeschlossen-p-ho-lost-ei-bf-nach-der-natur-vergr-300-mit-warzen-oder-zu-einem-netzwerk-vereinigten-krftigen-leisten-besetzt-ist-MAB5TE.jpg ". Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . ^ / Peronospora. â a P. arborescens. Ein Oogon mit heranreifender, von Peri- plasma (pZ) umgebener Oospora, a Antheridium (Vergr. 500, nach de Bary). 6â/" Keife Oosporen von verschiedener Structur: h P. calotheca, c P. Myoso- tidis, d P. Valcrianellae, e P. Corydalis, die verhältnissmässig dünn- wandige Oospore (osp) bleibt hier in das dickwandige Oogon (o//) eingeschlossen, /â P. Ho lost ei (bâf nach der Natur, Vergr. 300). mit Warzen oder zu einem Netzwerk vereinigten kräftigen Leisten besetzt ist Stock Photo")
RMMAB5TE–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . ^ / Peronospora. â a P. arborescens. Ein Oogon mit heranreifender, von Peri- plasma (pZ) umgebener Oospora, a Antheridium (Vergr. 500, nach de Bary). 6â/" Keife Oosporen von verschiedener Structur: h P. calotheca, c P. Myoso- tidis, d P. Valcrianellae, e P. Corydalis, die verhältnissmässig dünn- wandige Oospore (osp) bleibt hier in das dickwandige Oogon (o//) eingeschlossen, /â P. Ho lost ei (bâf nach der Natur, Vergr. 300). mit Warzen oder zu einem Netzwerk vereinigten kräftigen Leisten besetzt ist
RMRE1BJN–. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. CHAPTER XXXVI ACTINOMYCOSIS Actinomyces Bovis (Bollinger) Synonyms.—Discomyces bovis: Streptothrixactinomyces: Streptothrix Israeli: Nocardia actinomyces: Oospora .bovis: Nocardia bovis: Cladothrix actinomyces: Bacterium actinocladotbrix. General Characteristics.—A parasitic, anaerobic, non-motile, non-flagellate, non-sporogenous (?), branched micro-organism, belonging to the higher bacteria, staining by ordinary methods and by Gram's method, and pathoge
RMMCTK81–. Fig. SO. -Leptolegnia catidata De Bary. A Oogonien tragender Hauptfaden; B reife Oospora. (A 160/1, -à 500/1.) (Nach De Bary.) Fig. 81. Aphanomyces stellatus De Bary. A Faden mit Schwärmsporenköpfiehen; .à Scliwärmsporen; COogonien mit Antheridien: D reife Oospore (390/1). (Nach De Bary.) und ausschwärmend, anfangs mit 2 endständigen Cilien, bald zur Ruhe kommend, sich häutend und dann mit 2 seitlichen Cilien versehen nochmals schwärmend. Oosporangien 1 sporig. Oospore das ganze Sporangium ausfüllend. â I Art, L. caudata De Bary (Fig. SO;. Rasen schlaff, dünnfädig. Schwärmsporensp
RMRD7GKD–. Bacteriology and mycology of foods. Food. RHIZOPUS—MUCOR-OIDIUM 205 lactis (oospora lactis) is often classified with yeasts and has then been given the name Mycoderma lactis. The molds are set apart from bac- teria and yeasts in that they are multicellular. The following varieties may be met with in a microbiological examination of foods. Rhizopus. The most common member of this group is Rhizopus nigricans. It is the common black bread mold and may be responsible for other food spoilage. Stevens (1917) has shown that this fungus causes the rot of strawberries during shipment. This work verif
RMRDW53A–. A text book of veterinary pathology, for students and practitioners. Veterinary pathology. GENERAL fONSIDEEATION OF DISEASE. 49 Hyphomycetes (Moulds). Hyphom3'cetes or moulds are non-chlorophyllic plants. Struc- turally they are composed of mycelial threads from which up- right reproductive organs may be formed. 'IMiey are usually multicellular and reproduce by spores. They re(|uire preformed foods and thrive best in the absence of light. Oospora porric/iucs (Achoriou Schoenleini) is the organism that causes favus. These nrganisms have mycelia with h phae, the latter may l)e branched and te
RMRR30YT–. The actinomycetes. Actinomycetales. Figure 9. Morphology of aetinomycetes compared to certain l^acteria and fungi with which they have often been confused; f. to r., starting at top: Lcptothrix. Clndothrix, Streplubacillus, Oospora, Oidium, Actinomyces (Reproduced from: Lieske, K. Morphologic mid Hiologie der Strahlenpilze. Verlag von (Jebriider Borntraeger, Leipzig, 1921, p. 6).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
RMRH04M6–. Bulletin. Mycology; Fungi; Botany. BULL. DE LA SOC. MYC. DE FRANCE T. IX, PL. XIV.. L Isaria dubia. — II. Oospora deslructor. cyclaminis. — V. Phyllosticla glauci=pora. — III. Enrotium echinulatum. — n*. Phyllosticla — VI et VIII. Fracchiaea rostrata et sa pycnide. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Socie?te? mycologique de France. Epinal : Victor Collot
![. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1157 dying back and shooting out anew from axillary buds. The trouble is very similar, if not identical, with that affecting the walnut and also seems to be related to what we have described as the California peach yellows. It is probably the same as the pecan rosette, which occurs in the southeastern states. PLUM. Die-Back, Crown Gall, Sour Sap, Rust. See Almond. Brown Rot. See Apricot POMELO. See Orange. POTATO. Scab (Oospora scabies). Figure 80. The growth of this fungus on the surface of the potato produc Stock Photo](https://c8.alamy.com/comp/RG32XC/california-plant-diseases-plant-diseases-bulletin-218-california-plant-diseases-1157-dying-back-and-shooting-out-anew-from-axillary-buds-the-trouble-is-very-similar-if-not-identical-with-that-affecting-the-walnut-and-also-seems-to-be-related-to-what-we-have-described-as-the-california-peach-yellows-it-is-probably-the-same-as-the-pecan-rosette-which-occurs-in-the-southeastern-states-plum-die-back-crown-gall-sour-sap-rust-see-almond-brown-rot-see-apricot-pomelo-see-orange-potato-scab-oospora-scabies-figure-80-the-growth-of-this-fungus-on-the-surface-of-the-potato-produc-RG32XC.jpg ". California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1157 dying back and shooting out anew from axillary buds. The trouble is very similar, if not identical, with that affecting the walnut and also seems to be related to what we have described as the California peach yellows. It is probably the same as the pecan rosette, which occurs in the southeastern states. PLUM. Die-Back, Crown Gall, Sour Sap, Rust. See Almond. Brown Rot. See Apricot POMELO. See Orange. POTATO. Scab (Oospora scabies). Figure 80. The growth of this fungus on the surface of the potato produc Stock Photo")
RMRG32XC–. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1157 dying back and shooting out anew from axillary buds. The trouble is very similar, if not identical, with that affecting the walnut and also seems to be related to what we have described as the California peach yellows. It is probably the same as the pecan rosette, which occurs in the southeastern states. PLUM. Die-Back, Crown Gall, Sour Sap, Rust. See Almond. Brown Rot. See Apricot POMELO. See Orange. POTATO. Scab (Oospora scabies). Figure 80. The growth of this fungus on the surface of the potato produc
![. The actinomycetes. Actinomycetales. iiisroHicAi- M('i;(>n(M-al, was coni- plrtoly lu'jilcctcd by ncai-ly all botanists fol- lowing him. i'^cn so outstaiidiiiiz; a itotaiiist as Rohind Thaxtcr, who about 1 "> years later studi(Hl another group of actinoniycctos, nanu'ly, the oi'ganisms causing i)otato seal), called them fungi (Oospora scabies), com- pletely o-erlooking their close relationship to the bactcM'ia. 2. The second cii'cumstance had to do with the fact that the role of microbes as causative agents of infectious diseases had just come to be recognized as a result of the Stock Photo](https://c8.alamy.com/comp/RR310F/the-actinomycetes-actinomycetales-iiisrohicai-migtnm-al-was-coni-plrtoly-lujilcctcd-by-ncai-ly-all-botanists-fol-lowing-him-icn-so-outstaiidiiiiz-a-itotaiiist-as-rohind-thaxtcr-who-about-1-quotgt-years-later-studihl-another-group-of-actinoniycctos-nanuly-the-oiganisms-causing-iotato-seal-called-them-fungi-oospora-scabies-com-pletely-o-erlooking-their-close-relationship-to-the-bactcmia-2-the-second-ciicumstance-had-to-do-with-the-fact-that-the-role-of-microbes-as-causative-agents-of-infectious-diseases-had-just-come-to-be-recognized-as-a-result-of-the-RR310F.jpg ". The actinomycetes. Actinomycetales. iiisroHicAi- M('i;(>n(M-al, was coni- plrtoly lu'jilcctcd by ncai-ly all botanists fol- lowing him. i'^cn so outstaiidiiiiz; a itotaiiist as Rohind Thaxtcr, who about 1 "> years later studi(Hl another group of actinoniycctos, nanu'ly, the oi'ganisms causing i)otato seal), called them fungi (Oospora scabies), com- pletely o-erlooking their close relationship to the bactcM'ia. 2. The second cii'cumstance had to do with the fact that the role of microbes as causative agents of infectious diseases had just come to be recognized as a result of the Stock Photo")
RMRR310F–. The actinomycetes. Actinomycetales. iiisroHicAi- M('i;(>n(M-al, was coni- plrtoly lu'jilcctcd by ncai-ly all botanists fol- lowing him. i'^cn so outstaiidiiiiz; a itotaiiist as Rohind Thaxtcr, who about 1 "> years later studi(Hl another group of actinoniycctos, nanu'ly, the oi'ganisms causing i)otato seal), called them fungi (Oospora scabies), com- pletely o-erlooking their close relationship to the bactcM'ia. 2. The second cii'cumstance had to do with the fact that the role of microbes as causative agents of infectious diseases had just come to be recognized as a result of the
RMRR30WW–. The actinomycetes. Actinomycetales. 48 THE ACTIXOMYCETES, Vol. I. FiGi RE 20. Typiciil growth of ;i meinl)er of the genu.s Nocardia. Nomenclature, two generic names, if differ- ing even by one letter, are to be regarded as distinct. It was finally decided that the generic name Nocardia should not be applied to the group of actinomycetes as a whole, as suggested by Trevisan, but should be limited to only one of the genera of the group, as will be shown later. Sauvageau and Radais, in 1892, placed the actinomycetes among the true fungi, namely, the Hyphomycetes in the genus Oospora. Only a yea
![. Minnesota plant diseases. Plant diseases. i26 Minnesota Plant Diseases. Potato scab {Oospora scabies Thaxt.). Potato scab is an ex- ceedingly common disease of potatoes. The cause has been the subject of some dispute among botanists but it is now gen- erally accepted that the common form of potato scab in Amer- ica is due to a parasitic fungus, while the European scab has a very different cause. The American potato-scab fungus be- longs to the group of "imperfect" fungi and is found amongst the white, loose-spored forms. Scabby potatoes when freshly removed from the soil show a ver Stock Photo](https://c8.alamy.com/comp/RDE397/minnesota-plant-diseases-plant-diseases-i26-minnesota-plant-diseases-potato-scab-oospora-scabies-thaxt-potato-scab-is-an-ex-ceedingly-common-disease-of-potatoes-the-cause-has-been-the-subject-of-some-dispute-among-botanists-but-it-is-now-gen-erally-accepted-that-the-common-form-of-potato-scab-in-amer-ica-is-due-to-a-parasitic-fungus-while-the-european-scab-has-a-very-different-cause-the-american-potato-scab-fungus-be-longs-to-the-group-of-quotimperfectquot-fungi-and-is-found-amongst-the-white-loose-spored-forms-scabby-potatoes-when-freshly-removed-from-the-soil-show-a-ver-RDE397.jpg ". Minnesota plant diseases. Plant diseases. i26 Minnesota Plant Diseases. Potato scab {Oospora scabies Thaxt.). Potato scab is an ex- ceedingly common disease of potatoes. The cause has been the subject of some dispute among botanists but it is now gen- erally accepted that the common form of potato scab in Amer- ica is due to a parasitic fungus, while the European scab has a very different cause. The American potato-scab fungus be- longs to the group of "imperfect" fungi and is found amongst the white, loose-spored forms. Scabby potatoes when freshly removed from the soil show a ver Stock Photo")
RMRDE397–. Minnesota plant diseases. Plant diseases. i26 Minnesota Plant Diseases. Potato scab {Oospora scabies Thaxt.). Potato scab is an ex- ceedingly common disease of potatoes. The cause has been the subject of some dispute among botanists but it is now gen- erally accepted that the common form of potato scab in Amer- ica is due to a parasitic fungus, while the European scab has a very different cause. The American potato-scab fungus be- longs to the group of "imperfect" fungi and is found amongst the white, loose-spored forms. Scabby potatoes when freshly removed from the soil show a ver
RMRGN7EB–. Bulletin international de l'Académie des Sciences de Cracovie. Classe des sciences mathématiques et naturelles. = Anzeiger der Akadémie der Wissenschaften in Krakau. Mathematisch-naturwissenschaftliche classe. Science. '^=^==^, ^ Fis;. 8.. Fig. 9. ähnliches Bild liefert wie Oospora destructor, weil sie dieselbe Grösse und Gestalt der Sporen besitzt. Oospora bildet jedoch nicht Sporen. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the origi
RMRDE38Y–. Diseases of economic plants . Plant diseases. 208 DISEASES OF ECONOMIC PLANTS tive to sugar beets in Germany. It has been reported from several places in the United States. Air-slaked lime, 60 to 70 bushels per acre, has been recommended. Scab (Oospora scabies Thaxt.). — This scab resembles closely the scab of the Irish potato and is caused by the same fungus.' It usually covers more completely the sur-. FiG. 94. — Potato scab on beets. face of the beet than in the case of the potato, and tends more to form corky growths upon the surface than to make deep cavities. Usually the corky growth t
RMRH1WKB–. Bulletin. Mycology; Fungi; Fungi. BULL. DE LA SOC. MYC. DE FRANCE. T. XIII, frî-JX.',. &17f£AtfeZX M£. A. Clonostachys Theobromoe. — 13. Monilia penicillioides. — C. Monilia Acremomiuin.— H. Hormiscium Bussardi. — E. Oospora Beta:. — F. Oospora Alquieri. — G. 0 Opoixi. — H. Stysanus ainyli.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Société mycologique de France; Société botanique de France. Epinal : La Société
RMRH0BTR–. Bulletin. Agriculture; Agriculture -- Arizona. 612 Potato. Thirty-second Annual Report Blackleg caused by Bacillus jjhijtophthorus, from St. David. Scab caused by Oospora scabies, from Santa Cruz Valley. Rhizoctoniose caused by Rhizoctonia solani, from Santa Cruz Valley.. Fig. 9.—Trunk of peach tree killed by crown gall. Note the large gall at base of the trunk on the left side. ORCHARD TREES Apple Die-back caused by Cytospora rubescens, from Apache County.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration
RMRGB7G7–. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. Bui. 82, U. S. Dept. of Agriculture. PLATE II.. Four Tubers (A, B, 0, and 1>) Infected with Spongospora Subterranea Col- lected in New Brunswick, Dominion of Canada, on October 1, 1913. They represent the scabby stage of the disease. The sori niiiy be either isolated or grouped, us shown in .1 and B. The variation in size and general appearance of the sori is brought out in Cand I>. In the tuber marked 1) the sori are only about half as large and more superficial than in C. Two tubers infected with Oospora scab a
RMREEPW9–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz. Cryptogams -- Germany; Cryptogams -- Austria; Cryptogams -- Switzerland. 24 X. Halobyssus Zukal in Oesterr. Bot. Zeitschr. XLIII, 279 (1893). Mycel reich verzweigt, flockig, feinfädig. Sporen in Ketten am Ende von fertilen, dickeren Zweigen gebildet, derbhäutig. Die Gattung unterscheidet sich von Oospora lediglich durch die Sporen- bildung. Die fertilen Zweige sind etwas dicker als die übrigen Myceläste und bilden Sporen, welche als Chlamydosporen angesprochen Averden müssen, da sie ziemlich dicke Membran bes
RMRN1CYM–. Annales de l'Institut Pasteur. Science; Allergy and Immunology; Medicine; Microbiology. ÉTUDE D'UN « OOSPOa.A. » PATHOGÈNE 211 formation capillaire. En outre réaction de périphlébite inilam- matoire commune. Ces divers faits d'expérimentation semblent bien montrer l'action pathogène ou tout au moins toxique des cultures de. FiG. Oospora Perieri : Culture sur lame en boîte Borrel. Forme Mycélienne : 1. 1. 1, Spores latérales; 2, Spore terminale; 3, Longs éléments mycéliens cloisonnés. — Gross, : 1.323. VOospora Perieri. Il est vrai que les liquides irritants pour l'organisme peuvent provoquer
![. Annales de l'Institut Pasteur. Science; Allergy and Immunology; Medicine; Microbiology. ETCDE DUN « OOSPORA » PATHOGENE 213 tures très riches, et dont les élémenls, presque doublés de volume, réalisent de véritables formes géantes. On voit quelle importance cela peut avoir au point de vue thérapeutique, ces deux antiseptiques étant employés communément. Au contraire, les conditions défavorables, froid et chaleur 1,- — 2- "--'. FiG. 6. — Abcès provoqué sur un Cobaye par inoculation inlrapéritonéale. Coupe anatomo-palholoCTique au niveau même de l"abcès de la vé--icule séminale. — 1, Stock Photo](https://c8.alamy.com/comp/RN1CYB/annales-de-linstitut-pasteur-science-allergy-and-immunology-medicine-microbiology-etcde-dun-oospora-pathogene-213-tures-trs-riches-et-dont-les-lmenls-presque-doubls-de-volume-ralisent-de-vritables-formes-gantes-on-voit-quelle-importance-cela-peut-avoir-au-point-de-vue-thrapeutique-ces-deux-antiseptiques-tant-employs-communment-au-contraire-les-conditions-dfavorables-froid-et-chaleur-1-2-quot-fig-6-abcs-provoqu-sur-un-cobaye-par-inoculation-inlrapritonale-coupe-anatomo-palholoctique-au-niveau-mme-de-lquotabcs-de-la-v-icule-sminale-1-RN1CYB.jpg ". Annales de l'Institut Pasteur. Science; Allergy and Immunology; Medicine; Microbiology. ETCDE DUN « OOSPORA » PATHOGENE 213 tures très riches, et dont les élémenls, presque doublés de volume, réalisent de véritables formes géantes. On voit quelle importance cela peut avoir au point de vue thérapeutique, ces deux antiseptiques étant employés communément. Au contraire, les conditions défavorables, froid et chaleur 1,- — 2- "--'. FiG. 6. — Abcès provoqué sur un Cobaye par inoculation inlrapéritonéale. Coupe anatomo-palholoCTique au niveau même de l"abcès de la vé--icule séminale. — 1, Stock Photo")
RMRN1CYB–. Annales de l'Institut Pasteur. Science; Allergy and Immunology; Medicine; Microbiology. ETCDE DUN « OOSPORA » PATHOGENE 213 tures très riches, et dont les élémenls, presque doublés de volume, réalisent de véritables formes géantes. On voit quelle importance cela peut avoir au point de vue thérapeutique, ces deux antiseptiques étant employés communément. Au contraire, les conditions défavorables, froid et chaleur 1,- — 2- "--'. FiG. 6. — Abcès provoqué sur un Cobaye par inoculation inlrapéritonéale. Coupe anatomo-palholoCTique au niveau même de l"abcès de la vé--icule séminale. — 1,
RMRN0056–. Annales de l'Institut Pasteur. Science; Allergy and Immunology; Medicine; Microbiology. Fig. 2. Oopora Metchnikowi. Culture en cellules, coloration au grain. Filaments continus, interrompus, et fructifères. Fig. 3 Oospora Guignardi. Schéma figurant les filaments continus, interrompus, et sporifères. nation, et tout en se ramifiant, il a légèrement grossi, est plus large que les rameaux; c'est encore là un fait qui montre le caractère mycélien des Streptothrix. Les filaments ont une très grande tendance à s'adosser l'un contre l'autre, ce qui donne parfois l'illusion d'un élargissement des fi
RMRN1D2P–. Annales de l'Institut Pasteur. Science; Allergy and Immunology; Medicine; Microbiology. ETUDE D'UN « OOSPORA .. PATHOGENE 205 daminent développés. Ces colonies sont jaunâtres en général; mais leur coloration semble conditionnée par le milieu de culture lui-même, qui cède des pigments. C'est ainsi que sur la betterave les colonies sont rosées, et que sur la carotte elles sont franchement jaune ocreux. C'est sur les lames en boîte Borrel que l'examen microscopique permet de déceler le mode de développement de ce champignon. 1- i—. FiG. 2. — Oospora Perieri : Culture en bouillon sucré ; pellicu
RMRN006D–. Annales de l'Institut Pasteur. Science; Allergy and Immunology; Medicine; Microbiology. SUIl LE GENRE OOSPORA. 259 violet de gentiane (soit en colorant après dessiccation et fixation par les procédés ordinaires, soit en agissant directement sur le vivant, en faisant passer sous la lamelle une goutte de solution, puis de Teau), l'aspect est tout différent : les filaments sont plus larges et continus; on ne voit plus de bâtonnets ni de granu- lations isolées ; si la coloration est intense, les filaments semblent homogènes; si elle est faible, on aperçoit à leur intérieur ces mêmes bâtonnets de
.Gros- sissement : 1000 diam. 4. Appareils conidiens (Oospora n° 3). Grossissement : 2000 diam. 5. Formes en massues. Grossissement: 2000diam. 6. Formes tortillons. Grossissement : 2000 diam. 7. Aspect d'un filament après Stock Photo")
RMRG92GH–. Bulletin trimestriel de la Société mycologique de France. Mycology; Fungi; Fungi. Ã*m0é ( -. / £ r-S' <*p /X il v^â i ^ * â %/â ^ N ,. « vy 1. Culture cellulaire en bouillon maltosé (Oospora n° 2) (21 jours). Gros- sissement : 1700 diam. ⢠2. Arthrospores. Grossissement : 1700 diam. 3. Culture cellulaire (Oospora n° 3) en bouillon maltosé (21 jours").Gros- sissement : 1000 diam. 4. Appareils conidiens (Oospora n° 3). Grossissement : 2000 diam. 5. Formes en massues. Grossissement: 2000diam. 6. Formes tortillons. Grossissement : 2000 diam. 7. Aspect d'un filament après
RMRN1D0B–. Annales de l'Institut Pasteur. Science; Allergy and Immunology; Medicine; Microbiology. ÉTUDE D'UN « OOSPORA » PATHOGÈNE 209 véritables formes de dégénérescence, dont les éléments con- tiennent des inclusions rouse foncé sur les lames colorées au bleu lactique. Ce champignon ne saurait non plus résister à l'action des antiseptiques usuels. A des taux très minimes, le nitrate d'argent, la teinture d'iode, la solution de Gram, le formol, le. FlG. Oospora Perieri : CuUure en goulle pendante. Forme Levure pure : 1-2-3, en voie de scissiparité; 4, Levure bourgeon- nante. — Gross. : 1.323. ^ sulfa
RMRH8WCK–. Botánica descriptiva. Compendio de la flora española. Estudio de las plantas que viven espontáneamente en España y de las más frecuentemente cultivadas que tienen aplicaciones en medicina, agricultura, industria y horticultura. Plants. 398 HONGOS otros bi o triloculares y mayores. Sobre hojas y ramillas del sauce. N. NO. y O. GEN. OOSPORA WALLR.—Mohos que viven sobre las substancias de origen animal en descomposición, con filamentos cortísimos. 1.631. Oo. lactis Wa>llr.—Especie que prodúcelas eflorescencias blan- cas de los quesos. Kn todas partes. 1.632. Oo. crustácea VVallr.—Especie que
RMRN1D35–. Annales de l'Institut Pasteur. Science; Allergy and Immunology; Medicine; Microbiology. 204 ANNALES DE L'INSTITUT PASTEUR 1° Forme « bouture >>. Lorsqu'on ensemence YOospora sur une carotle, une bette- rave glycérinée, ou sur gélatine, il se développe en quarante- huit heures, à la température de 16 à 18°, sous l'aspect de petiles. .-2 FiG. 1. — Oospora Petieri : Culture de 3 semaines. 1, Sur carotte (culture blanc ocreux); 2, Sur betterave (culture rose). excroissances sphériques, véruqueuses, légèrement déprimées au centre, de couleur opaline, qui s'accroissent de plus en plus. Les c
RMRN1D0P–. Annales de l'Institut Pasteur. Science; Allergy and Immunology; Medicine; Microbiology. ÉTUDE D'UN « O0SPORA » PATHOGÈ.NE 207 paroi du tube, des hyphes rampantes, cloisonnées, parallèles, formant nn feutrage épais, blanchâtre. Ces filaments mesurent de 1 à 3 a de diamètre et les spores de 1 à 2 jx. Les aspects morphologiques de TO. sont donc extrêmement variés suivant les milieux de culture; aussi la classification de ce champignon présente-t-elle quelques difficultés.. FiG. 3. — Oospora Perieri : Culture âgée de 48 heures sur lame en boite Borrel. Forme Bouture : fructification en cyme : 1,
RMRG70DD–. Bullettino. Botany -- Periodicals. SEDE DI FIRENZE - ADUNANZA DEL li DICEM15UE 173 In base alle numerose misurazioni da me fatte, tanto sulla Sci. grarainicola quanto sulla Sci. macrospora, si hanno le seguenti medie: niametio complessivo Diametro della oospora vera Spessore della parete oogoniale /' Sci. f/roìtìinicola 15,9 32 5,3 Sci. macron'pora 58,9 50 4,1 La varietà della quale ora mi occupo, presenta invece le di- mensioni seguenti: diametro complessivo a 53,2-04,4 con media di 58,7 a diametro della vera oospora . ,a 39,2-44,8 » » 41,8 /x spessore della parete oogoniale jj. 7-11,2
RMRJYFAW–. Atlas de microbiologie ... Roussel, Georges; Microbiology. Fig. 205. Favus de la poule sur agar peptouisé à 5 â¢/.. Fig. 206. Oospora canina (Gostantin-Sabrazès) sur agar peptonisé à 5 %⢠MM. Unna et Neebe ont isolé un certain nombre de variétés d'Acho- rion et leur ont donné des noms spéciaux. Nous avons reproduit fig. 105, J00 et 197 plusieurs de ces champignons cultivés sur agar peptonisé à 5 pour 100. Nous avons pu nous-mème, en étudiant une cinquantaine de cas de Favus, en isoler quelques-uns dont les prin- cipaux types sont représentés page 105 (fig. 198 à 204). Enfin, Ã
RMRCD9M5–. Diseases of crop-plants in the Lesser Antilles. Tropical plants; Plant diseases. DISEASES CAUSED BY FUNGI 41. Fig. 10 TYPES OF CONIDIAL FRUCTIFICATIONS 1. Sphaeropsis. 2. Graphium (conid. stage of Rosellinia). 3. 4. Cercospora. 5. Aspergillus. 6. Penicillium. '. Macrosporium. 8. Alternaria tenuis. 9. Oospora. 10. MucoR (Zygomycetes). 11. Monilia. 12. GlOEOSPORIUM LINDEMUTHIANUM. 13. FUSARIUM. 14. DiPLODIA. After Nat. Pflam.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrat
RMRCC6HB–. Diseases of economic plants. Plant diseases. 208 DISEASES OF ECONOMIC PLANTS tive to sugar beets in Germany. It has been reported from several places in the United States. Air-slaked Hme, 60 to 70 bushels per acre, has been recommended. Scab {Oospora scabies Thaxt.). — This scab resembles closely the scab of the Irish potato and is caused by the same fungus. ^ It usually covers more completely the sur-. Fiu. 94. — Potato sf.ab on beets. face of the beet than in the case of the potato, and tends more to form corky growths upon the surface than to make deep cavities. Usually the corky growth t
RMRCDPJJ–. Diseases of economic plants. Plant diseases. 208 DISEASES OF ECONOMIC PLANTS tive to sugar beets in Germany. It has been reported from several places in the United States. Air-slaked lime, 60 to 70 bushels per acre, has been recommended. Scab (Oospora scabies Thaxt.). â This scab resembles closely the scab of the Irish potato and is caused by the same fungus.1 It usually covers more completely the sur-. Fig. 94. ââ Potato scab on beets. face of the beet than in, the case of the potato, and tends more to form corky growths upon the surface than to make deep cavities. Usually the corky growth
RMRCHRMM–. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet. Botany. Fig. 76. Pythiopsis cyinosa De Bary. A Faden mit Schwärmsporensporangien ; B Oogon mit Antheridien; C reife Oospora. (A lüO/1, B, £? 750/1.) (Nach De Bary.) I. Pythiopsis De Bary. Schwärmsporensporangien endstUndig, in cymöser An- ordnung oder reihenweise hintereinander, eiförmig, nach der Entleerung nie durch- wachsend. Schwärnisporen mit 2 endstän- digen Cilien, aus der Sporangienöffnung ausschwärmend und s
RMRCHRMR–. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet. Botany. Saprolegniineae. (Schröter., 97. Fig. 76. Pythiopsis cyinosa De Bary. A Faden mit Schwärmsporensporangien ; B Oogon mit Antheridien; C reife Oospora. (A lüO/1, B, £? 750/1.) (Nach De Bary.) I. Pythiopsis De Bary. Schwärmsporensporangien endstUndig, in cymöser An- ordnung oder reihenweise hintereinander, eiförmig, nach der Entleerung nie durch- wachsend. Schwärnisporen mit 2 endstän- digen Cilien, aus der Spor
RMRCJ8K9–. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet. Botany. Hyphomycetes. (Lindau. 425 1 Art. C. Irmisclüae Kühn, in den Blüten von Primeln. Der Pilz gehört zu Tuburcinia iprimulicola.. J?ifr. 219. A^Oospora candidnla Sacc. C'onidienträger, vergr. — SO. lactis (Fres.) Sacc. 3 (a 6 c) Individuen ans Knlturen 600/1. — C Halohyssus moniliformis Zuk. Zweig mit Sporenbildung, stark vergr. — D Fusidium carneo- lum Sacc. C'onidienketten mit Trägern , stark vergr. — E CyUndri
RMRCHRM3–. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet. Botany. Fig. SO. -Leptolegnia catidata De Bary. A Oogonien tragender Hauptfaden; B reife Oospora. (A 160/1, -à 500/1.) (Nach De Bary.) Fig. 81. Aphanomyces stellatus De Bary. A Faden mit Schwärmsporenköpfiehen; .à Scliwärmsporen; COogonien mit Antheridien: D reife Oospore (390/1). (Nach De Bary.) und ausschwärmend, anfangs mit 2 endständigen Cilien, bald zur Ruhe kommend, sich häutend und dann mit 2 seitliche
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