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IMAGES FROM CHAPTER 10:
Fig 10.1 Examples of tetraradiate, multiple-armed and sigmoid spores found in fast-flowing freshwater streams. Approximate spore lengths are shown in parentheses. (a) A single conidium of Dendrospora (150-200 µm); (b) conidium of Alatospora (30-40 µm); (c) conidium of Tetrachaetum (70-80 µm); (d) conidium of Heliscus (30 µm); (e) conidium of Clavariopsis (40 µm); (f) conidium of Lemonniera (60-70 µm); (g) conidium of Tetracladium (30-40 µm); (h) conidium of Anguillospora (150 µm)
Fig 10.2 A developing sexual spore (oospore) of Pythium mycoparasiticum (Oomycota). The spore has a very thick wall (w) and is contained in the outer wall (ow) of the oogonium (female reproductive cell). The arrows mark the positions of antheridia (male sex organs that fertilise the oogonium).
Fig 10.3a Rings of toadstools of mycorrhizal fungi (mainly Hebeloma and Lactarius species) around young birch trees in late autumn in an experimental field plot.
Fig 10.3b Rings of toadstools of mycorrhizal fungi (mainly Hebeloma and Lactarius species) around young birch trees in late autumn in an experimental field plot.
Fig 10.4 The changing pattern of naturally occurring mycorrhizal fungi at different distances from the bases of birch trees in an experimental field plot. [Data from Deacon et al., 1983]
Fig 10.5 Experimental study of mycorrhizal successions in field sites. See Fox, 1986)
Fig 10.6 A nutrient leaching system that mimics soil fungistasis
Fig 10.7 Pilobolus (Zygomycota), a fungus with a ballistic method of spore discharge. Left: several sporangia on a dung pellet. Right: a sporangium orientated towards a light source, showing how the subsporangial vesicle acts as a lens to focus light on pigments at the base of the vesicle, for precise orientation of sporangium discharge. |
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