Inoculation With Azospirillum spp. Acts as the Liming Source for Improving Growth and Nitrogen Use Efficiency of Potato.

ABSTRACT: Nitrogen (N) is one of the limiting factors for plant growth, and it is mainly supplied exogenously by fertilizer application. It is well documented that diazotrophic rhizobacteria improve plant growth by fixing atmospheric N in the soil. The present study investigates the nitrogen-fixing potential of two Azospirillum spp. strains using the ¹⁵N isotope-dilution method. The two diazotrophic strains (TN03 and TN09) native to the rhizosphere of potato belong to the genus Azospirillum (16S rRNA gene accession numbers LN833443 and LN833448, respectively). Both strains were able to grow on an N-free medium with N-fixation potential (138-143 nmol mg^-1 protein h^-1) and contained the nifH gene. Strain TN03 showed highest indole acetic acid (IAA)

SUBMITTER: Naqqash T 

PROVIDER: S-EPMC9366913 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature