The volatile-producing Flavobacterium johnsoniae strain GSE09 shows biocontrol activity against Phytophthora capsici in pepper

Journal of Applied Microbiology
M K Sang, Ki Deok Kim

Abstract

Previously, we selected a bacterial strain (GSE09) antagonistic to Phytophthora capsici on pepper, which produced a volatile compound (2,4-di-tert-butylphenol), inhibiting the pathogen. In this study, we identified strain GSE09 and characterized some of the biological traits of this strain in relation to its antagonistic properties against P. capsici. In addition, we examined bacterial colonization on the root surface or in rhizosphere soil and the effect of various concentrations of the volatile compound and strain GSE09 on pathogen development and radicle infection as well as radicle growth. Strain GSE09 was identified as Flavobacterium johnsoniae, which forms biofilms and produces indolic compounds and biosurfactant but not hydrogen cyanide (HCN) with little or low levels of antifungal activity and swimming and swarming activities. Fl. johnsoniae GSE09 effectively colonized on pepper root, rhizosphere, and bulk (pot) soil, which reduced the pathogen colonization in the roots and disease severity in the plants. Various concentrations of 2,4-di-tert-butylphenol or strain GSE09 inhibited pathogen development (mycelial growth, sporulation, and zoospore germination) in I-plate (a plastic plate containing a center partition). In a...Continue Reading

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Citations

Jan 15, 2013·International Journal of Systematic and Evolutionary Microbiology·Mee Kyung SangKi Deok Kim
Jul 15, 2015·International Journal of Food Microbiology·Kontham Kulangara VarshaKesavan Madhavan Nampoothiri
Jan 28, 2016·International Journal of Systematic and Evolutionary Microbiology·Wen-Ming ChenShih-Yi Sheu
Apr 22, 2016·Microbes and Environments·Tomoki NishiokaMasafumi Shimizu
Nov 22, 2016·Environmental Microbiology·Abdul SamadAngela Sessitsch
Jul 4, 2017·International Journal of Systematic and Evolutionary Microbiology·Adaeze Precious EkweSeung Bum Kim
Mar 22, 2019·Preparative Biochemistry & Biotechnology·Luciana Barbosa CoitinhoHamilton Cabral
Nov 8, 2017·International Journal of Systematic and Evolutionary Microbiology·Adaeze Precious Ekwe, Seung Bum Kim
May 31, 2017·AIMS Microbiology·Lorena Carro, Imen Nouioui
Dec 17, 2020·Microbial Drug Resistance : MDR : Mechanisms, Epidemiology, and Disease·Elaine Wan Ling ChanChun Wie Chong
Jan 31, 2021·Communications Biology·Xing WangZhenjun Sun
Apr 20, 2021·Journal of Bioscience and Bioengineering·Rina FujitaAtsushi Ishihara
Apr 24, 2021·Frontiers in Microbiology·Judith Kraut-CohenEddie Cytryn

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