Antagonistic and Plant Growth Promoting Potentials of Indigenous Endophytic Bacteria of Shallots

Resti, Zurai and Reflin, Reflin and Gani, Suardi (2017) Antagonistic and Plant Growth Promoting Potentials of Indigenous Endophytic Bacteria of Shallots. International Journal of Science and Applied Technology, 2 (2). pp. 42-49. ISSN 2528-7354

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Abstract

This research was further study of screening endophytic bacteria that isolated from the roots of healthy shallots. The aim of research was to determine the ability of endophytic indigenous bacteria as anti-microbial agents and plant growth promoters. In this study, there are two experiments: 1) in vitro anti-microbial test against pathogens from the group of fungi and bacteria, 2) testing the physiological and biochemical characteristics of endophytic bacteria as potential biocontrol agents and growth promoters, namely production of salicylic acid, siderophore, IAA, lipase and protease enzyme as well as the ability to phosphate solubilization. Endophytic bacteria was capable to inhibiting of pathogenic fungi, except Bacillus sp HI that could not inhibit Foc. B. cereus P14, B.cereus Se07, Bacillus sp SJI and S.marcescens had the ability to inhibit of all three pathogenic fungi (C. capsici, C. gloeosporiodes and Foc). All endophytic bacteria were able to inhibit Xaa, but were not able to inhibit R. solanacearum. Physiological characteristics of potential endophytic bacteria as biocontrol agents and growth promotor ware the production of salicylic acid, siderophot, IAA, lipase and protease enzymes and phosphate solubilization

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