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Taxonomy and physiology of rhizobia
Book chapter

Taxonomy and physiology of rhizobia

G.W. O'Hara, J.E. Zilli, P.S. Poole and M. Hungria
Working with rhizobia, pp.125-144
Australian Centre for International Agricultural Research
2016
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Abstract

Rhizobia are common Gram-negative soil-inhabiting bacteria distinguished by the feature that they contain genes required for nodulation (e.g. nod, rhi) and ni¬trogen fixation (e.g. nif, fix). These genes enable them to form a symbiotic asso¬ciation with legumes. Currently there are 15 genera of root nodule bacteria (Ta¬ble 7.1) containing more than 120 described species.

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