中国生物防治学报2012，Vol.28Issue(3)：394-399,6.
琼胶寡糖激发坛紫菜对附生细菌的减少作用
Oligoagars Induce Defense Response of Porphyra haitanensis to Epiphytic Bacteria
摘要
Abstract
The rot disease of Porphyra haitanens＆ cultured under 18℃ and 35℃ were obviously lightened by pretreatment with oligoagars. The defense response elicited by oligoagars was strong enough to kill epiphytic bacteria associated with the algal. Up to 94.7% of the resident bacterial flora of healthy plants was eliminated within 60 min after treatment by 100μg.mL-1 oligoagars. Addition of catalase prior to oligoagars partially inhibited this elimination. Mixture of three kinds of antibiotics was used to treat P haitanensis to get the asepsis culture systems. Approximately 60.8% of reinfected pathogenic bacteria on axenic algal were eliminated within 3 h after elicitation by oligoagars. Antimicrobial test revealed that oligoagars showed no direct toxicity to associated bacteria or pathogen, but a rapid release of hydrogen peroxide was observed after adding of oligoagars in medium. From these results, we infer that oligoagars can be recognized as defense elicitors by P. haitanensis to protect algal efficiently from infections by eliminating the associated pathogenic bacteria.关键词
琼胶寡糖/坛紫菜/防御反应/附生细菌Key words
oligoagar/Porphyra haitanensis/defense response/associated bacteria分类
生物科学引用本文复制引用
朱方超,李崇丰,王秀娟,朱竹君,陈海敏,严小军..琼胶寡糖激发坛紫菜对附生细菌的减少作用[J].中国生物防治学报,2012,28(3):394-399,6.基金项目
国家自然科学基金 （）
学科项目 （）
宁波市创新团队 （）
