ISSN: 0973-7510

E-ISSN: 2581-690X

Dwi Suryanto , Mirza Anggriawin and Erman Munir
Department of Biology, Faculty of Mathematics and Natural Sciences,
University of Sumatera Utara, Jln. Bioteknologi No. 1, Medan, 20155 Indonesia.
J. Pure Appl. Microbiol., 2016, 10 (3): 1905-1910
© The Author(s). 2016
Received: 16/09/2015 | Accepted: 08/11/2015 | Published: 30/09/2016
Abstract

An alternative to reduce chemical control of plant pathogenic fungi is by utilizing biological control agent like antagonistic bacteria. In this study, ten antagonistic bacterial isolates were examined to know their ability in suppressing Fusarium in vitro and in vivo. In vitro examination of fungal growth inhibition was conducted by dual culture test. To examine bacterial ability to reduce seedling-off, tomato seed was dipped in bacterial solution for 30 minutes and planted in soil infested with Fusarium culture. Six Fusarium isolates were tested for their pathogenicity in tomato seed, in which two of the isolated were newly isolated from infected egg-plant and banana. Bacterial isolate ability to inhibit Fusarium growth was varied to some extent, however in general Alcaligenes sp. BSO2 inhibited Fusarium spp. the most. Unlike in vitro examination, controlling Fusarium wilt in tomato seed showed that Serratia sp. AW10 was more active to suppress the disease. This isolate was also to contribute to higher seedling height.

Keywords

Antagonistic bacteria, Coated seed, Plant pathogen, Seedling-off.

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© The Author(s) 2016. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.