Symbiosis.

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Presentation transcript:

Symbiosis

Sym biosis together life

Examples

Mutualism: Nitrogen fixing bacteria and Plants

Soya bean infection with Rhizobium Nodule formation 1 Soya bean infection with Rhizobium

Nodule formation 2

Nodule formation 3

Nodule formation 4

Lens culinaris (lentil) root nodulation. TEM photomicrographs http://www.sunderland.ac.uk/~es0man/tem2.htm

Clover root nodules. Leghaemoglobin

Notes on N fixation

Myco rrhizae Fungus Root

Ectomycorrhizae Fungal structures in soil Absorptive hyphae Mycellial strand Scleridia Mycorrhizal root Rhizomorphs Soil mycellium

http://www.ffp.csiro.au/research/mycorrhiza/ecm.html

http://www.ffp.csiro.au/research/mycorrhiza/ecm.html

Vesicular arbuscular mycorrhizae (VAM) Endotrophic http://www.ffp.csiro.au/research/mycorrhiza/ecm.html

Appressorium At entry point Epidermis Intercellular hyphae in air channel Hypodermis Intracellular hyphae Arbuscules Vesicle Cortex

http://www.ffp.csiro.au/research/mycorrhiza/ecm.html

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