期刊
BIOCONTROL SCIENCE AND TECHNOLOGY
卷 19, 期 2, 页码 151-167出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09583150802627033
关键词
abiotic stresses; mycoparasite; antagonistic bacterium; Fusarium; chlamydospore formation; biocontrol
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
Chlamydospores are vital asexual resting cells, which allow most of the Fusarium pathogenic strains to retain their longevity, thus ensuring survival of viable reproductive cells. This study suggested that both abiotic - extreme temperature and growth media, and biotic - antagonistic Bacillus amyloliquefaciens SMCD 518 and mycoparasititic Acremonium strictum SMCD 504 are natural stressors able to shift chlamydospores formation in Fusarium graminearum and F. sporotrichioides under in vitro conditions. In F. sporotrichioides, Minimal Conversion Media (MCM) with mannitol supplement induced high chlamydospore size, and chain abundance at optimal 21C and extreme 37C temperatures, respectively. F. graminearum showed low chlamydospore formation on MCM-mannitol, even when exposed to 37C under prolonged 5 days incubation. Generally, F. sporotrichioides has higher chlamydospore abundance, longer chlamydospore chain, and production rapidity compared to F. graminearum in both abiotic and biotic treatments. However, biocontrol bacteria and mycoparasite posed minimal effects on chlamydospore formation, as compared to abiotic stressors, thus controlling the Fusaria but not triggering them to generate chlamydospores as protection shields.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据