期刊
NEW PHYTOLOGIST
卷 211, 期 2, 页码 411-417出版社
WILEY
DOI: 10.1111/nph.14025
关键词
antimicrobial peptides; endoreduplication; host-symbiont coevolution; legume-rhizobium symbiosis; nitrogen fixation; nodule-specific cysteine-rich (NCR) peptides; terminal bacteroid differentiation
资金
- Labex Saclay Plant Sciences-SPS [ANR-10-LABX-0040-SPS]
- Labex TULIP [ANR-10-LABX-41, ANR-11-IDEX-0002-02]
- ANR grant 'BugsInACell' [ANR-13-BSV7-0013]
- ANR grant 'StayPink' [ANR-15-CE20-0005]
- Agence Nationale de la Recherche (ANR) [ANR-15-CE20-0005] Funding Source: Agence Nationale de la Recherche (ANR)
Terminal bacteroid differentiation (TBD) is a remarkable case of bacterial cell differentiation that occurs after rhizobia are released intracellularly within plant cells of symbiotic legume organs called nodules. The hallmarks of TBD are cell enlargement, genome amplification and membrane permeabilization. This plant-driven process is governed by a large family of bacteroid-targeted nodule-specific cysteine-rich (NCR) peptides that were until recently thought to be restricted to a specific lineage of the legume family, including the model plant Medicago truncatula. Recently, new plant and bacterial factors involved in TBD have been identified, challenging our view of this phenomenon at mechanistic and evolutionary levels. Here, we review the recent literature and discuss emerging questions about the mechanisms and the role(s) of TBD.
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