Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 16, Issue 3, 2014; Page No.(723-730)

DISTRIBUTION AND PLANT GROWTH PROMOTING ABILITIES OF FLUORESCENT PSEUDOMONADS ASSOCIATED WITH PEARL MILLET

A. SURESH, M. SRINIVAS V. KRISHNA REDDY AND S. RAM REDDY

Abstract

Fluorescent pseudomonads (FLPs) associated with rhizosphere of pearl millet cultivated in different agro-edaphic locations of Telangana (AP, India) were isolated and their PGPR traits were evaluated. Out of 300, 20 FLP isolates were found to be promising strains. These isolates possessed the ability of producing growth promoting substances like IAA, GA, HCN, siderophores, phosphate solubilization. Based on these characteristics three isolates viz, BPf3, BPf5 and BPF75 were selected for further evaluation. These strains have also shown resistance towards heavy metals, high salt concentration and pH and also exhibited significant antifungal activity and enhanced the seed germination and efficient root colonization. Further, artificial inoculations have also clearly shown to enhance the growth in terms of height, dry weight of shoot and root.

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