Work

Molecular Diversity of Azotobacter sp. Isolates from Rhizosphere of Tropical Tasar Silkworm Host Plants

Year: 2018

Type: article

Abstract: Azotobacter is an aerobic, free living bacteria fixes atmospheric nitrogen in soil besides producing plant growth promoting substance. Eight Azotobacter isolates were isolated and purified from different tasar rearing regions of West Singhbhoom, Jharkhand on Jenson media by using serial dilution technique. Molecular diversity among these isolates was analysed using RAPD primers. Of the 20 decamer primers screened, 10 primers amplified clear and distinguishable fragments and yielded a total of 103 fragments, of which 101 fragments are polymorphic (98%). Unweighted neighbour joining dendrogram based on Dice indices divides eight Azotobacter isolates in two major clusters. Dissimilarity matrix showed a maximum difference of 76% between the isolate from Hatghamaria (Azo 21-1) and Talaburu (Azo 29-1) and minimum difference of 39% between the isolates derived from the same region, Kharswan (Azo 14 and Azo 15-1). Thus RAPD marker analysis was found to be easy and rapid in assessing diversity among Azotobacter isolates.

Source: International Journal of Current Microbiology and Applied Sciences

DOI: 10.20546/ijcmas.2018.707.327

Authors: Manj appa, I.G. Prabhu, Niranjan Kumar, A.K. Sinha

Institution: Central Tasar Research & Training Institute

Language: English

Topic: Plant-Microbe Interactions and Immunity

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: diamond

Funder: Ministry of Textiles, Government of India