Siderophore Producing by Endophytic Bacterial Strain YBS106 with Antifungal Activity against Fusarium oxysporum

ISSN: 0973-7510

E-ISSN: 2581-690X

Siderophore Producing by Endophytic Bacterial Strain YBS106 with Antifungal Activity against Fusarium oxysporum

Lin Tianxing, Xu Chenghao, Tang Mei, Guan Qinlan and Gong Mingfu

¹Key Laboratory of Special Biological Resources in Mountain Emei, School of Life Sciences, Leshan Normal Universlty, Leshan, Sichuan – 614 004, China.

J Pure Appl Microbiol. 2013;7(3):2091-2096

Received: 18/10/2012 | Accepted: 21/12/2012 | Published: 30/09/2013

Abstract

The aim of this study was to quantify the siderophores production of YBS106, isolated from Arisaema erubescens using improved sugar-aspartic acid (MSA) as a selective medium. The antifungal effect of this bacteria was then assessed against cotton wilt pathogen (Fusarium oxysporum) at varying concentrations of FeCl₃. This strain was identified using morphological, biochemical and physiological characteristics, 16S rDNA sequence homology and phylogenetic analysis. Strain YBS106 produced fluorescent siderophores in MSA medium, the relative content of which amounted to 83%. The siderophore produced by strain YBS106 exhibited significant inhibitory activity against F. oxysporum growth under low iron conditions. Strain YBS106 was identified as Bacillus atrophaeus.

Keywords

Endophytic bacteria, Siderophore, Fusarium oxysporum, Bacillus atrophaeus

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