ISSN: 0973-7510

E-ISSN: 2581-690X

Research Article | Open Access

Ayu Sibagariang, Dwi Suryanto and Kiki Nurtjahja

1Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Jalan Bioteknologi No. 1, Kampus USU, Medan 20155, Indonesia.
J Pure Appl Microbiol, 2019, 13 (1): 297-305 | Article Number: 5456 | © The Author(s). 2019 

Received: 27/12/2018| Accepted: 01/02/2019 | Published: 30/03/2019

One problem faced by chrysant farmer in North Sumatera, Indonesia is to control fungal disease caused by Fusarium oxysproum. The aims of this study were to know antagonistic bacterial isolates to reduce fungal disease caused byF. oxysporum and to know the isolates ability in producing plant growth hormon such as indole acetic acid and in solubilizing phosphate. Eight bacterial strains, collection of Laboratory of Microbiology, Universitas Sumatera Utara were tested against F. oxysporum in dual culture assay. Two bacterial isolates, SP1, closely related to Bacillus amyloliquefaciens strain MPA 1034 and SP7R, closely related to Pseudomonas versuta strain L10.10 showed to reduce fusarium wilt in chrysant along with production of indole acetic acid and phosphate solubilizing properties in vitro. Application of the two antagonistic bacterial isolates resulted in considerably decrease of disease intensity caused by F. oxysporum. The results showed that utilization of bacterial isolate to promote chrysant performance is promising in the next future.


Antagonistic bacteria, biological control, plant growth promoting, Chrysanthemum sp.

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© The Author(s) 2019. 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.