What question did this study set out to answer?

To evaluate the phylogenetic diversity and generic classifications of bacterial nitrogen-fixing legume symbionts using comparative 16S rDNA sequence data.

January 1, 2003The Journal of General and Applied MicrobiologyOpen Access

Changing concepts in the systematics of bacterial nitrogen-fixing legume symbionts

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To evaluate the phylogenetic diversity and generic classifications of bacterial nitrogen-fixing legume symbionts using comparative 16S rDNA sequence data.
Comparative phylogenetic analysis of 16S rDNA sequences across 44 legume-symbiont bacterial species representing 12 genera documented as of February 2003.
Lineage mapping across the classes Alphaproteobacteria and Betaproteobacteria to assess monophyly relative to non-symbiotic taxa.
Legume symbionts do not form a single lineage but diverge across nine monophyletic groups spanning Alphaproteobacteria and Betaproteobacteria, intermixed with non-symbiotic bacterial taxa.
Groups 5, 8, and 9 remain adequately delimited as individual genera based on high bootstrap support and polyphasic taxonomy, whereas the remaining six groups require taxonomic emendation through either generic amalgamation or subordinate lineage splitting.

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Implication

Comparative phylogenetic analysis reveals polyphyletic divergence of nitrogen-fixing legume symbionts across nine monophyletic groups, highlighting necessary revisions to bacterial classification.

Cite This Study

Sawada et al. (2003) studied this question.

synapsesocial.com/papers/6a6f3cb98031ec7bb1dba89b https://doi.org/10.2323/jgam.49.155

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Implication

Comparative phylogenetic analysis reveals polyphyletic divergence of nitrogen-fixing legume symbionts across nine monophyletic groups, highlighting necessary revisions to bacterial classification.

Changing concepts in the systematics of bacterial nitrogen-fixing legume symbionts

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Discussion

Implication

Cite This Study

Changing concepts in the systematics of bacterial nitrogen-fixing legume symbionts

Key Points

Discussion

Implication

Cite This Study

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