Evidence map›Paper›PMID 19468700›Full record

ArticleMicrobial ecology2009

Survey of Chickpea Rhizobia diversity in Portugal reveals the predominance of species distinct from Mesorhizobium ciceri and Mesorhizobium mediterraneum.

Ana Alexandre, Clarisse Brígido, Marta Laranjo, Sérgio Rodrigues, Solange Oliveira

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Article in Microbial ecology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. Selection of competitive and effective rhizobial strain for enhanced chickpea production under Indo-Gangetic plains of India.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2025
    Article
  2. Population and genetic diversity of rhizobia nodulating chickpea in Indo-Gangetic plains of India.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2024
    Article
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  8. Diversity of rhizobial and non-rhizobial bacteria nodulating wild ancestors of grain legume crop plants.International microbiology : the official journal of the Spanish Society for Microbiology · 2021
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  13. BioMed research international · 2019
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Ana AlexandreLaboratório de Microbiologia do Solo, Instituto de Ciências Agrárias Mediterrânicas (I.C.A.M.), Universidade de Evora, Evora, Portugal.
Clarisse Brígido
Marta Laranjo
Sérgio Rodrigues
Solange Oliveira

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Several Mesorhizobium species are able to induce effective nodules in chickpea, one of the most important legumes worldwide. Our aims were to examine the biogeography of chickpea rhizobia, to search for a predominant species, and to identify the most efficient microsymbiont, considering Portugal as a case study. One hundred and ten isolates were obtained from continental Portugal and Madeira Island. The 16S ribosomal RNA gene phylogeny revealed that isolates are highly diverse, grouping with most Mesorhizobium type strains, in four main clusters (A-D). Interestingly, only 33% of the isolates grouped with Mesorhizobium ciceri (cluster B) or Mesorhizobium mediterraneum (cluster D), the formerly described specific chickpea microsymbionts. Most isolates belong to cluster A, showing higher sequence similarity with Mesorhizobium huakuii and Mesorhizobium amorphae. The association found between the province of origin and species cluster of the isolates suggests biogeography patterns: most isolates from the north, center, and south belong to clusters B, A, and D, respectively. Most of the highly efficient isolates (symbiotic effectiveness >75%) belong to cluster B. A correlation was found between species cluster and origin soil pH of the isolates, suggesting that pH is a key environmental factor, which influences the species geographic distribution. To our knowledge, this is one of the few surveys on chickpea rhizobia and the first systematic assessment of indigenous rhizobia in Portugal.

Indexed as

PhylogenySoil MicrobiologySymbiosisBiodiversityCicerCluster AnalysisDNA, BacterialGeographyPlasmidsPortugalRhizobiaceaeRNA, Ribosomal, 16SSequence Analysis, DNADNA, BacterialRNA, Ribosomal, 16S

Identifiers

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.