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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 74, Issue 5

Guidelines for the description of rhizobial symbiovars Open Access

Abstract

Rhizobia are bacteria that form nitrogen-fixing nodules in legume plants. The sets of genes responsible for both nodulation and nitrogen fixation are carried in plasmids or genomic islands that are often mobile. Different strains within a species sometimes have different host specificities, while very similar symbiosis genes may be found in strains of different species. These specificity variants are known as symbiovars, and many of them have been given names, but there are no established guidelines for defining or naming them. Here, we discuss the requirements for guidelines to describe symbiovars, propose a set of guidelines, provide a list of all symbiovars for which descriptions have been published so far, and offer a mechanism to maintain a list in the future.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): host specificity , nitrogen fixation , nodC , nodulation , symbiosis , symbiosis islands , symbiosis plasmids and symbiovar
Funding
This study was supported by the:
  • CNPq (Award 465133/2014-4)
    • Principle Award Recipient: MariangelaHungria
  • IRNASA/CSIC (Award CLU-2019-05)
    • Principle Award Recipient: AlvaroPeix
  • Universidad Nacional Autónoma de México (Award PAPIIT)
    • Principle Award Recipient: EsperanzaMartinez-Romero
© 2024 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License. This article was made open access via a Publish and Read agreement between the Microbiology Society and the corresponding author’s institution.
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2024-05-14
2025-06-24
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Guidelines for the description of rhizobial symbiovars
Int J Syst Evol Microbiol 74, 006373 (2024); https://doi.org/10.1099/ijsem.0.006373
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