Claim · model-written summary
Nodule N2-fixing efficiencies differed significantly among the IGS types of cowpea rhizobia.
- Taxon
- cowpea
Vigna unguiculatat0 - Interactor
- IGS typese3symbiont
- Outcome
- IGS type N2-fixing efficienciese3
Verbatim
e3“Relating nodule function to the 18 IGS types revealed significant differences in IGS type N2-fixing efficiencies”
t0“bradyrhizobial biodiversity of cowpea”
Title
Flora Pule-Meulenberg; Alphonsus K Belane; Tatiana Krasova-Wade; et al. BMC Microbiology 2010. doi:10.1186/1471-2180-10-89
Other claims from this paper (11)
- Observation Cowpea genotypes differed significantly in plant growth, delta15N values and %Ndfa in Ghana and South Africa.
- Observation Cowpea genotypes differed significantly in the amounts of N-fixed in Ghana and South Africa.
- Observation Following DNA analysis of 270 nodules from nine genotypes, 18 strain IGS types were found.
- Observation Sequencing of the 16S-23S rDNA gene revealed 4 clusters of cowpea rhizobia.
- Observation Cluster 2 may be a distinct group representing a new Bradyrhizobium species.
- Association Cowpea bradyrhizobia were more diverse in South Africa than in Botswana and Ghana.
- Observation Cowpea is strongly dependent on N2 fixation for its N nutrition in South Africa and Ghana.
- Association Symbiotic efficiency of IGS types correlated positively with sole nodule occupancy.
- Mechanism Differences in IGS type diversity and symbiotic efficiency probably account for the genotype x environment interaction in cowpea.
- Observation Some strains from Southern Africa were phylogenetically very distinct.
- Observation All root-nodule bacteria nodulating cowpea in this study belonged to the genus Bradyrhizobium.