湖南农业大学学报（自然科学版）2011，Vol.37Issue(3)：286-289,4.DOI:10.3724/SP.J.1238.2011.00286
生防菌06-4对魔芋软腐病的防治及机理的初步研究
Biocontrol effect of Lysobacter antibioticus 06-4 on soft rot pathogen of Amorphophallus konjac its mechanism
摘要
Abstract
Lysobacter antibioticus strain 06-4 is a potential biocontrol agent against soft rot disease of Amorphophallus konjac root caused by Pectobacterium carotovora subsp, carotovora (Pcc).Biocontrol mechanism of Lysobacter antibioticus strain 06-4 against Pcc was observed based on antagonism, colonization and nutrition competition.The results indicated that strain 06-4 showed antibacterial activity against Pcc strains with different virulence.It could colonize on the root and the rhizosphere of A.konjac and the organism could maintain 32 d with 102-104cfu/g.Nutritional requirement experiments showed that the similarity of sole-carbon-source utilization between Pcc and strain 06-4 was 46.88 ％, suggesting a nutritional competition between the two microorganisms.Strain 06-4 also significantly reduced the bacterial soft rot index of A.konjac by 58.92 ％ in field plot in 2007.关键词
溶杆菌属/魔芋软腐病/定殖/营养竞争Key words
Lysobacter/ soft rot of Amorphophallus konjac/ colonization/ nutrition competition分类
农业科技引用本文复制引用
张丽辉,王永吉,廖林,姬广海..生防菌06-4对魔芋软腐病的防治及机理的初步研究[J].湖南农业大学学报（自然科学版）,2011,37(3):286-289,4.基金项目
农业部农业行业科研专项(3-23) （3-23）
国家自然科学基金项目(30760139) （30760139）
