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Determinants of host range specificity in Legume-Rhizobia symbiosis
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Walker, Liam, Lagunas, Beatriz and Gifford, Miriam L. (2020) Determinants of host range specificity in Legume-Rhizobia symbiosis. Frontiers in Microbiology, 11 . 585749. doi:10.3389/fmicb.2020.585749 ISSN 1664-302X.
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Official URL: https://doi.org/10.3389/fmicb.2020.585749
Abstract
Leguminous plants possess the almost unique ability to enter symbiosis with soil-resident, nitrogen fixing bacteria called rhizobia. During this symbiosis, the bacteria physically colonize specialized organs on the roots of the host plant called nodules, where they reduce atmospheric nitrogen into forms that can be assimilated by the host plant and receive photosynthates in return. In order for nodule development to occur, there is extensive chemical cross-talk between both parties during the formative stages of the symbiosis. The vast majority of the legume family are capable of forming root nodules and typically rhizobia are only able to fix nitrogen within the context of this symbiotic association. However, many legume species only enter productive symbiosis with a few, or even single rhizobial species or strains, and vice-versa. Permitting symbiosis with only rhizobial strains that will be able to fix nitrogen with high efficiency is a crucial strategy for the host plant to prevent cheating by rhizobia. This selectivity is enforced at all stages of the symbiosis, with partner choice beginning during the initial communication between the plant and rhizobia. However, it can also be influenced even once nitrogen-fixing nodules have developed on the root. This review sets out current knowledge about the molecular mechanisms employed by both parties to influence host range during legume-rhizobia symbiosis.
Item Type: | Journal Article | ||||||||||||
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Subjects: | Q Science > QH Natural history Q Science > QR Microbiology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||||||
Library of Congress Subject Headings (LCSH): | Rhizobium, Symbiosis, Root-tubercles | ||||||||||||
Journal or Publication Title: | Frontiers in Microbiology | ||||||||||||
Publisher: | Frontiers Research Foundation | ||||||||||||
ISSN: | 1664-302X | ||||||||||||
Official Date: | 27 November 2020 | ||||||||||||
Dates: |
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Volume: | 11 | ||||||||||||
Article Number: | 585749 | ||||||||||||
DOI: | 10.3389/fmicb.2020.585749 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Date of first compliant deposit: | 30 November 2020 | ||||||||||||
Date of first compliant Open Access: | 1 December 2020 | ||||||||||||
RIOXX Funder/Project Grant: |
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