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Genetic diversity of rhizobia associated with Pisum sativum L. in the Northern part of Turkey

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Abstract

In this study, the diversity of root-nodulating bacteria associated with Pisum sativum L. cultivated in the Eastern and Western Black Sea regions (11 provinces) and three provinces in the Marmara region were investigated. rDNA-ITS RFLP analysis revealed nine groups within the 40 isolates collected in the study. Based on the phylogenetic analysis of the recA, atpD and glnII genes, isolates within the RFLP groups were assigned to the following Rhizobium species; Group-I: R. laguerreae; Groups -II and -IV: R. ruizarguesonis; Groups -III, -V, -VII, -VIII: genospecies-B (gsB) of the R. leguminosarum complex (Rlc); Group-VI: Rlc gsE; and Group-IX: Rlc gsA. From the nodC-RFLP analysis and phylogenetic analysis of the nodC gene, all rhizobial isolates obtained in this study were assigned to the symbiovar. viciae variety of the related Rhizobium species. In this study, Rlc gsB (n: 19) was the species that most commonly caused the nodulation of P. sativum in the northern Anatolia, followed by R. ruizarguesonis (n: 8). Rhizobium laguerreae (n: 5) was a widespread but not common species, and Rlc gsA (n: 3) and Rlc gsE (n: 5) had a distribution limited to the Eastern and Western Black Sea regions, respectively. Overall, results obtained from species diversity analysis, nodC phylogenetic analysis and nodX analysis suggest a common phylogeographic history for pea-nodulating rhizobia in northern Anatolia and western Europe. Separately, this study presents the first reports of R. laguerreae and R. ruizarguesonis from P. sativum root nodules in Turkey and the first report of R. ruizarguesonis outside of Europe.

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Data availability

The datasets generated during and/or analysed during the current study are available from the corresponding author upon reasonable request.

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Not applicable.

Abbreviations

AIC:

Akaike’s Information Criterion

ANI:

Average Nucleotide Identities

BIC:

Bayesian Information Criterion

BLAST:

Basic Local Alignment Search Tool

BNF:

Biological nitrogen fixation

Gs:

Genospecies

HUP+ :

Hydrogen Uptake Positive

ML:

Maximum Likelihood

MLSA:

Multilocus Sequence Analysis

MP:

Maximum Parsimony

NCBI:

National Center for Biotechnology Information

NJ:

Neighbor-Joining

pSym :

Symbiotic plasmid

RFLP:

Restriction Fragments Length Polymorphi

Rlc:

R. leguminosarum species Complex

TBE:

Tris Borate EDTA

TBR:

Tree Bisection and Re-connection

YMA:

Yeast Extract Mannitol Agar

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Acknowledgements

The author thanks Gregory T. Sullivan for editing an earlier version of this manuscript.

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The author did not receive support from any organization for the submitted work.

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All aspects of this work were completed by the author.

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Correspondence to Cem Tolga Gürkanlı.

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Gürkanlı, C.T. Genetic diversity of rhizobia associated with Pisum sativum L. in the Northern part of Turkey. Biologia 76, 3149–3162 (2021). https://doi.org/10.1007/s11756-021-00831-9

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  • DOI: https://doi.org/10.1007/s11756-021-00831-9

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