Survey of Chickpea Rhizobia Diversity in Portugal Reveals the Predominance of Species Distinct from Mesorhizobium ciceri and Mesorhizobium mediterraneum
نویسندگان
چکیده
منابع مشابه
Assessment of molecular diversity in chickpea (Cicer arietinum L.) rhizobia and structural analysis of 16S rDNA sequences from Mesorhizobium ciceri.
Molecular diversity studies of 19 rhizobia isolates from chickpea were conducted using simple sequence repeats (SSR) and 16S rDNA-RFLP markers. Phenotypic characterization with special reference to salinity and pH tolerance was performed. These isolates were identified as different strains of Mesorhizobium, Rhizobium, Bradyrhizobium, and Agrobacterium. Twenty SSR loci of Mesorhizobium ciceri, d...
متن کاملMultilocus sequence analysis reveals multiple symbiovars within Mesorhizobium species.
The genus Mesorhizobium includes species nodulating several legumes, such as chickpea, which has a high agronomic importance. Chickpea rhizobia were originally described as either Mesorhizobium ciceri or M. mediterraneum. However, rhizobia able to nodulate chickpea have been shown to belong to several different species within the genus Mesorhizobium. The present study used a multilocus sequence...
متن کاملLipopolysaccharides from Mesorhizobium huakuii and Mesorhizobium ciceri: chemical and immunological comparative data.
Lipopolysaccharides of two Mesorhizobium species of different host specificity were compared: M. huakuii and M. ciceri. M. huakuii sp. was represented by five strains with special consideration of M. huakuii IFO 15243(T). SDS/PAGE profiles revealed that all M. huakuii LPS preparations contained low molecular mass fractions (LPS-II) of the same molecular size. All of lipopolysaccharides containe...
متن کاملStrains of Mesorhizobium amorphae and Mesorhizobium tianshanense, carrying symbiotic genes of common chickpea endosymbiotic species, constitute a novel biovar (ciceri) capable of nodulating Cicer arietinum.
AIMS To identify several strains of Mesorhizobium amorphae and Mesorhizobium tianshanense nodulating Cicer arietinum in Spain and Portugal, and to study the symbiotic genes carried by these strains. METHODS AND RESULTS The sequences of 16S-23S intergenic spacer (ITS), 16S rRNA gene and symbiotic genes nodC and nifH were analysed. According to their 16S rRNA gene and ITS sequences, the strains...
متن کاملChickpea rhizobia symbiosis genes are highly conserved across multiple Mesorhizobium species.
Chickpea has been considered as a restrictive host for nodulation by rhizobia. However, recent studies have reported that several Mesorhizobium species may effectively nodulate chickpea. With the purpose of investigating the evolutionary relationships between these different species with the ability of nodulating the same host, we analysed 21 Portuguese chickpea rhizobial isolates. Symbiosis ge...
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ژورنال
عنوان ژورنال: Microbial Ecology
سال: 2009
ISSN: 0095-3628,1432-184X
DOI: 10.1007/s00248-009-9536-6