Selection and characterization of Spanish Trifolium-nodulating rhizobia for pasture inoculation.

Identification of elite nitrogen-fixing rhizobia strains is a continuous and never ending effort, since new legume species can be cultivated in different agro systems or are introduced into new areas. This current study reports on the taxonomic affiliation and symbiotic proficiency of nine strains of Trifolium-nodulating rhizobia isolated from different pasture areas in Spain, as well as three Rhizobium leguminosarum bv. trifolii reference strains, on eleven Trifolium species.

Biodiversity of rhizobia present in plant nodules of Biserrula pelecinus across Southwest Spain.

Biodiversity studies of native Mesorhizobium spp. strains able to nodulate the annual herbaceous legume Biserrula pelecinus L. in soils from Southwest Spain have been carried out.

Strains HH103 and NGR234 Form Nitrogen Fixing Nodules With Diverse Wild Soybeans () From Central China but Are Ineffective on Northern China Accessions.

indigenous populations are prevalent in provinces of Central China whereas species (, , , and others) are more abundant in northern and southern provinces. The symbiotic properties of different soybean rhizobia have been investigated with 40 different wild soybean () accessions from China, Japan, Russia, and South Korea. Bradyrhizobial strains nodulated all the wild soybeans tested, albeit efficiency of nitrogen fixation varied considerably among accessions.