Effects of bacillomycin D homologues produced by Bacillus amyloliquefaciens 83 on growth and viability of Colletotrichum gloeosporioides at different physiological stages

被引:28
作者
Luna-Bulbarela, Agustin [1 ]
Tinoco-Valencia, Raunel [1 ]
Corzo, Gerardo [2 ]
Kazuma, Kohei [3 ]
Konno, Katsuhiro [3 ]
Galindo, Enrique [1 ]
Serrano-Carreon, Leobardo [1 ]
机构
[1] Univ Nacl Autonoma Mexico, Dept Ingn Celular & Biocatalisis, Inst Biotecnol, Av Univ 2001, Cuernavaca 62210, Morelos, Mexico
[2] Univ Nacl Autonoma Mexico, Dept Med Mol & Bioproc, Inst Biotecnol, Av Univ 2001, Cuernavaca 62210, Morelos, Mexico
[3] Univ Toyama, Inst Nat Med, Med Resources Dept, 2630 Sugitani, Toyama, Toyama 9300194, Japan
关键词
Bacillomycin; Bacillus; Colletotrichum; Lipopeptide; LIQUID CULTURE; ITURIN-A; SUBTILIS; LIPOPEPTIDE; ANTAGONISM; PATHOGENS; PELLETS; FUNGUS; LINDEMUTHIANUM; IDENTIFICATION;
D O I
10.1016/j.biocontrol.2018.08.004
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Bacillus amyloliquefaciens strain 83 is a bacterium isolated from mango phyllosphere effective to control anthracnose in various tropical crops. The antifungal activity of bacillomycin D homologues, produced by this strain, against Colletotrichum gloeosporioides was characterized in this study. Minimum inhibitory concentration (MIC100) of bacillomycin D homologues revealed that slight changes in the fatty acid chain length (hydrophobicity) of bacillomycin D cause significant differences of its antifungal activity against spores but no significant differences were found against mycelium. These lipopeptides inhibit both spore germination and mycelial growth. Mycelium was more susceptible to bacillomycin D homologues than spores. Propidium iodide staining of spores and mycelium showed that bacillomycin D causes damage to the cell membranes which directly correlates with its viability. The present work explores the relationship between the chemical structure and biological activity of bacillomycin homologues. As synergism between lipopeptides produced by B. amyloliquefaciens was observed, the biosynthesis of diverse bacillomycin D homologues should play a major role in the biological control of fungal pathogens by this strain. These findings will contribute to the design of better antimicrobial lipopeptides with high selectivity and potency.
引用
收藏
页码:145 / 154
页数:10
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