Isolation, purification and identification of cyanobacterium Tolypothrix sp. KJE1

A cyanobacterial strain, KJE1, was isolated from rice fields of Banaras Hindu University, Varanasi, during the monsoon of 2019. Morphological analysis and 16S rRNA phylogenetic studies identified it as Tolypothrix sp., known for nitrogen fixation. The partial 16S rRNA gene sequence (1283 bps) was submitted to NCBI (Accession Number OP353555). This study underscores Tolypothrix’s role in sustainable agriculture, contributing to soil fertility and reducing dependency on synthetic fertilizers, with potential applications in biofertilization.