Characterization of Bacillus Isolates from the Rhizosphere of Tomato Suppressing Fusarium Wilt Disease

M. Kamali; J. Ahmadi; S. Naeimi; D. Guo

doi:10.1556/038.54.2019.006

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Acta Phytopathologica et Entomologica Hungarica

Volume/Issue:: Volume 54: Issue 1

Characterization of Bacillus Isolates from the Rhizosphere of Tomato Suppressing Fusarium Wilt Disease

Authors:

M. Kamali

M. Kamali ¹Department of Genetics and Plant Breeding, Imam Khomeini International University Qazvin, Iran

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J. Ahmadi

J. Ahmadi ¹Department of Genetics and Plant Breeding, Imam Khomeini International University Qazvin, Iran

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S. Naeimi

S. Naeimi ²Biological Control Research Department, Iranian Research Institute of Plant Protection, Agricultural Research Education and Extension Organization (AREEO) Tehran, Iran

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D. Guo

D. Guo ³School of Life Sciences, Chinese University of Hong Kong Hong Kong

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Pages:: 53–68

Online Publication Date:: Jun 2019

Publication Date:: 01 Jun 2019

Article Category:: Journal Article

DOI:: https://doi.org/10.1556/038.54.2019.006

Keywords:: Fusarium wilt; tomato; Bacillus; antagonism; growth promotion; biocontrol agents

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Fusarium wilt of tomato is one of the most prevalent and economically important diseases of tomato worldwide especially in tropical regions. The aims of the present study were to isolate and characterize Bacillus bacteria from tomato rhizospheric soil of various regions in Iran and determine the isolates that exhibit high levels of antagonistic efficiency against tomato Fusarium wilt pathogen, Fusarium oxysporum f. sp. lycopersici (Fol) and growth promotion activity. In this study, 303 Bacillus isolates were obtained from tomato rhizospheric soil. Dual culture and volatile metabolite tests were used to screen for antagonism of Bacillus isolates against Fol. Among them, 20 isolates were found to inhibit pathogen growth by 67.77% and 33.33% in dual culture and volatile metabolite tests, respectively. Based on the results of physiological tests and 16S rRNA and gyrA gene sequence analysis of 20 effective isolates, 11, seven and two isolates were identified as B. subtilis, B. velezensis and B. cereus, respectively. The results of greenhouse assessment showed that KR1-2, KR2-7 and A2-9 isolates which were characterized as Bacillus subtilis, reduced the disease index to 16.67% and promoted the plant growth by 80%. These isolates may serve as potential promising biocontrol agents against Fusarium wilt of tomato.

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Acta Phytopathologica et Entomologica Hungarica

Print ISSN:: 0238-1249

Online ISSN:: 1588-2691

Editor-in-Chief

Jenő KONTSCHÁN Centre for Agricultural Research, Hungary

Technical Editor

Ágnes TURÓCI Centre for Agricultural Research, Hungary

Section Editor

K SALÁNKI Centre for Agricultural Research, Hungary

Editorial Board

Z BOZSÓ Centre for Agricultural Research, Hungary

PE CHETVERIKOV Saint-Petersburg State University, Russia

JX CUI Henan Institute of Science and Technology, China

J FODOR Centre for Agricultural Research, Hungary

Z IMREI Centre for Agricultural Research, Hungary

BM KAYDAN Çukurova University, Turkey

L KISS University of Southern Queensland, Australia

V MARKÓ Hungarian University of Agriculture and Life Sciences, Hungary

MW NEGM Ibaraki University, Japan

L PALKOVICS Széchenyi István University, Hungary

M POGÁNY Centre for Agricultural Research, Hungary

D RÉDEI National Chung Hsing University, Taiwan

A TOLSTIKOV University of Tyumen, Russia

J VUTS Rothamsted Research, UK

GQ WANG Guangxi University, China

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Acta Phytopathologica et Entomologica Hungarica
Language	English
Size	B5
Year of Foundation	1966
Volumes per Year	1
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Founder	Magyar Tudományos Akadémia
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