Impact of two sp. on the response of diverse genotypes under salt stress.

Unlabelled: Currently, salinization is impacting more than 50% of arable land, posing a significant challenge to agriculture globally. Salt causes osmotic and ionic stress, determining cell dehydration, ion homeostasis, and metabolic process alteration, thus negatively influencing plant development. A promising sustainable approach to improve plant tolerance to salinity is the use of plant growth-promoting bacteria (PGPB).

Correction to: Salt stress mitigation in by combining different microbial inocula.

[This corrects the article DOI: 10.1007/s12298-022-01205-4.].

sp. nov., a new nitrogen-fixing symbiovar isolated from root nodules of in Tunisia.

Three bacterial strains, 1AS11, 1AS12 and 1AS13, members of the new symbiovar salignae and isolated from root nodules of grown in Tunisia, were characterized using a polyphasic approach. All three strains were assigned to the complex on the basis of gene analysis. Phylogenetic analysis based on 1734 nucleotides of four concatenated housekeeping genes (, , and ) showed that the three strains were distinct from known rhizobia species of the complex and clustered as a separate clade within this complex.

Salt stress mitigation in by combining different microbial inocula.

Unlabelled: Arid and semi-arid areas are considered vulnerable to various environmental constraints which are further fortified by climate change. Salinity is one of the most serious abiotic factors affecting crop yield and soil fertility. Till now, no information is available on the effect of salinity on development and symbiotic nitrogen (N) fixation in the legume species .

Genotypic and symbiotic diversity studies of rhizobia nodulating Acacia saligna in Tunisia reveal two novel symbiovars within the Rhizobium leguminosarum complex and Bradyrhizobium.

Acacia saligna is an invasive alien species that has the ability to establish symbiotic relationships with rhizobia. In the present study, genotypic and symbiotic diversity of native rhizobia associated with A. saligna in Tunisia were studied.

Phylogenetic study of rhizobia nodulating pea (Pisum sativum) isolated from different geographic locations in Tunisia.

Nodulated Pisum sativum plants showed the presence of native rhizobia in 16 out of 23 soil samples collected especially in northern and central Tunisia. A total of 130 bacterial strains were selected and three different ribotypes were revealed after PCR-RFLP analysis. Sequence analyses of rrs and four housekeeping genes (recA, atpD, dnaK and glnII) assigned 35 isolates to Rhizobium laguerreae, R.