Download Biological nitrogen fixation in forest ecosystems: by John C. Gordon (auth.), J. C. Gordon, C. T. Wheeler (eds.) PDF

By John C. Gordon (auth.), J. C. Gordon, C. T. Wheeler (eds.)

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Rhizobium strains are characterized by a specific range of hosts which can be infected. g. rhizobia from the cowpea group). Usually rhizobia enter the plant through deformed root hairs. e. cell wall and membrane material of plant origin. The bacteria are suggested to produce growth hormones which stimulates local multiplication of cortex cells. The infection process continues in cells located in lower layers of the cortex (Fig. 32). Subsequently a root primordium is induced inside the pericycle.

Dijk evan, Merkus E: A microscopic study of the development of a spore like stage in the life cycle of the root-nodule endophyte of Alnus glutinosa L. Gaerto. New Phytol. 77: 73-91, 1976. 75. Akkermans ADL, van Dijk C: Non-leguminous root-nodule symbioses with actinomycetes and Rhizobium. In: Nitrogen Fixation. i. Ecology. Broughton WJ (ed). Oxford University Press, p. 57-103, 1981. 76. van Dijk C: Endophyte distribution in the soil. In: Symbiotic Nitrogen Fixation in the M anagemen! o/temperate Forests.

Yamamoto Y: Effect of desiccation on the germination 0 akinetes of Anabaena cylindrica. Plant cell Physiol16: 749-752, 1975. Simon RD: Cyanophycin granules from the blue-green alga Anahaena cylindrica: a reserve material consisting of copolymers of aspartic acid and arginine. Proc Nat Acad Sci USA 68: 265-267, 1971. Yamamoto Y: Effect of some physical and chemical factors on the germination of akinetes of Anabaena (ylindrica. J Gen Appl Microbiol22: 311-323, 1976. Kaushik M, Kumar HD; The effect oflight on growth and development of two nitrogen fixing blue-green algae.

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