Isolation, identification and control effect of antagonistic bacteria LG-3 of tobacco black shank

doi:10.14088/j.cnki.issn0439-8114.2021.02.015

Abstract

Abstract: 35 antagonistic strains of tobacco black shank disease were screened from the rhizosphere soil of Xuchang healthy tobacco by the plate confrontation method. By means of control effect test, a strain LG-3 with good control effect on black shank disease of tobacco was obtained. After identification, LG-3 was identified as Arthrobacter nicotianae, and by toxicological analysis, it was found to be a non-toxic strain. It was reported for the first time that Arthrobacter nicotianae, as a biocontrol bacterium, had an antagonistic effect on the pathogenic bacteria of tobacco nigtibia, and the control effect of tobacco nigtibia at the seedling stage can reach 85.59%.

Key words: flue-cured tobacco, black shank, biocontrol bacteria, identification, control effect

CLC Number:

S476⁺.1

ZHANG Xing-bo, GUO Xiao-hong, LIU Yu-zhen, LI Jian-hua, WANG Jing, SUN Xiao-wei, FA Peng-fei, WEI Yue-hui. Isolation, identification and control effect of antagonistic bacteria LG-3 of tobacco black shank[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(2): 82-84.

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