Current Systematics of Rhizobia

Wang, En Tao

doi:10.1007/978-981-32-9555-1_3

Cited by 4 publications

(3 citation statements)

References 389 publications

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“…In the experimental chickpea field, two members of the Rhizobiaceae family, that is, Shinella fusca and Mesorhizobium , were found to be significantly more abundant in the bulk soil of two genotypes (An.Ca.1586 and Pascià) compared to the others. Shinella and Mesorhizobium are known to establish a symbiosis with legumes (Muleta et al, 2022; Wang, 2019). Particularly, Mesorhizobium has been reported to specifically nodulate with chickpea plants (Muleta et al, 2022; Yadav et al, 2013, 2021).…”

Section: Discussionmentioning

confidence: 99%

The ‘microbiome counterattack’: Insights on the soil and root‐associated microbiome in diverse chickpea and lentil genotypes after an erratic rainfall event

Brescia,

Sillo,

Franchi

et al. 2023

Environ Microbiol Rep

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Legumes maintain soil fertility thanks to their associated microbiota but are threatened by climate change that causes soil microbial community structural and functional modifications. The core microbiome associated with different chickpea and lentil genotypes was described after an unexpected climatic event. Results showed that chickpea and lentil bulk soil microbiomes varied significantly between two sampling time points, the first immediately after the rainfall and the second 2 weeks later. Rhizobia were associated with the soil of the more productive chickpea genotypes in terms of flower and fruit number. The root‐associated bacteria and fungi were surveyed in lentil genotypes, considering that several parcels showed disease symptoms. The metabarcoding analysis revealed that reads related to fungal pathogens were significantly associated with one lentil genotype. A lentil core prokaryotic community common to all genotypes was identified as well as a genotype‐specific one. A higher number of specific bacterial taxa and an enhanced tolerance to fungal diseases characterized a lentil landrace compared to the commercial varieties. This outcome supported the hypothesis that locally adapted landraces might have a high recruiting efficiency of beneficial soil microbes.

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Section: Discussionmentioning

confidence: 99%

The ‘microbiome counterattack’: Insights on the soil and root‐associated microbiome in diverse chickpea and lentil genotypes after an erratic rainfall event

Brescia,

Sillo,

Franchi

et al. 2023

Environ Microbiol Rep

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“…This order contains phenotypically diverse organisms, including terrestrial and aquatic bacteria, plant mutualists, and plant, animal, and human pathogens [ 2 ]. Moreover, all known alpha-rhizobia (alphaproteobacterial nitrogen-fixing legume symbionts) are found within the order Hyphomicrobiales and are spread across seven families ( Rhizobiaceae , Phyllobacteriaceae , Brucellaceae , Nitrobacteriaceae , Methylobacteriaceae , Xanthobacteriaceae , and Devosiaceae ) [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Refining the taxonomy of the order Hyphomicrobiales (Rhizobiales) based on whole genome comparisons of over 130 type strains

diCenzo,

Yang,

Young

et al. 2024

International Journal of Systematic and Evolutionary Microbiology

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The alphaproteobacterial order Hyphomicrobiales consists of 38 families comprising at least 152 validly published genera as of January 2024. The order Hyphomicrobiales was first described in 1957 and underwent important revisions in 2020. However, we show that several inconsistencies in the taxonomy of this order remain and we argue that there is a need for a consistent framework for defining families within the order. We propose a common genome-based framework for defining families within the order Hyphomicrobiales, suggesting that families represent monophyletic groups in core-genome phylogenies that share pairwise average amino acid identity values above ~75 % when calculated from a core set of 59 proteins. Applying this framework, we propose the formation of four new families and to reassign the genera Salaquimonas, Rhodoblastus, and Rhodoligotrophos into Salaquimonadaceae fam. nov., Rhodoblastaceae fam. nov., and Rhodoligotrophaceae fam. nov., respectively, and the genera Albibacter, Chenggangzhangella, Hansschlegelia, and Methylopila into Methylopilaceae fam. nov. We further propose to unify the families Bartonellaceae, Brucellaceae, Phyllobacteriaceae, and Notoacmeibacteraceae as Bartonellaceae; the families Segnochrobactraceae and Pseudoxanthobacteraceae as Segnochrobactraceae; the families Lichenihabitantaceae and Lichenibacteriaceae as Lichenihabitantaceae; and the families Breoghaniaceae and Stappiaceae as Stappiaceae. Lastly, we propose to reassign several genera to existing families. Specifically, we propose to reassign the genus Pseudohoeflea to the family Rhizobiaceae; the genera Oricola, Roseitalea, and Oceaniradius to the family Ahrensiaceae; the genus Limoniibacter to the emended family Bartonellaceae; the genus Faunimonas to the family Afifellaceae; and the genus Pseudochelatococcus to the family Chelatococcaceae. Our data also support the recent proposal to reassign the genus Prosthecomicrobium to the family Kaistiaceae.

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“…In general, the core SNF genes ( nod, nif, fix genes, among others) are located within mobile genetic elements that include symbiotic islands and symbiotic (mega)-plasmids (Tian & Young 2019; Checcucci et al 2019; Geddes et al 2020), facilitating their spread through horizontal gene transfer (HGT) (Sullivan et al 1995; Barcellos et al 2007; Pérez Carrascal et al 2016). Emphasizing the role of HGT in the evolution of rhizobia, rhizobia are dispersed across seven families of the Alphaproteobacteria and one family of the Betaproteobacteria, and most genera with rhizobia also contain non-rhizobia (Garrido-Oter et al 2018; Wang 2019).…”

Section: Introductionmentioning

confidence: 99%

Symbiotic and non-symbiotic members of the genusEnsifer(syn.Sinorhizobium) are separated into two clades based on comparative genomics and high-throughput phenotyping

Fagorzi

Ilie

Decorosi

et al. 2020

Preprint

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Current Systematics of Rhizobia

Cited by 4 publications

References 389 publications

The ‘microbiome counterattack’: Insights on the soil and root‐associated microbiome in diverse chickpea and lentil genotypes after an erratic rainfall event

The ‘microbiome counterattack’: Insights on the soil and root‐associated microbiome in diverse chickpea and lentil genotypes after an erratic rainfall event

Refining the taxonomy of the order Hyphomicrobiales (Rhizobiales) based on whole genome comparisons of over 130 type strains

Symbiotic and non-symbiotic members of the genusEnsifer(syn.Sinorhizobium) are separated into two clades based on comparative genomics and high-throughput phenotyping

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