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红蛋巢菌属生防菌的筛选及其对油菜菌核病的防治潜能
引用本文:周乐聪,唐文华.红蛋巢菌属生防菌的筛选及其对油菜菌核病的防治潜能[J].中国油料作物学报,2001,23(2):52-56.
作者姓名:周乐聪  唐文华
作者单位:1. 中国农业大学植物病理学系;中国农业科学院油料作物研究所
2. 中国农业大学植物病理学系,
基金项目:“九五”国家科技攻关项目(96-005-01-10-01)
摘    要:通过对采自云南的红蛋巢菌属(Nidula)鸟巢菌标本进行平板筛选,获得BNF71等11个核盘菌具有较强抑制作用的菌株。温室防病试验表明,BNF71和BNF137菌株的代谢液对核盘菌引起的油菜菌核病具良好防治效果,发病率防效分别达98.8%和86.1%,病斑扩展抑制率分别达99.7%和97.9%。BNF71活菌接种对油菜出苗的防病效果达85.2%。除抑制核盘菌外,BNF71对Aspergillus niger,A.flavus,Pythium ultimum,Rhizoctonia solani和Drechslera sorokiniana等重要的植物病原菌亦有不同程度的抑制作用。Nidula菌株具有较高的木聚糖酶活性,BNF134具有显著的外几丁质酶活性。

关 键 词:红蛋巢菌属  油菜  菌核病  生物防治
文章编号:1007-9084(2001)02-0052-05

Screening for Nidula species as novel biological control agents to Sclerotinia sclerotiorum
ZHOU Le-cong ,TANG Wen-hua.Screening for Nidula species as novel biological control agents to Sclerotinia sclerotiorum[J].Chinese Journal of Oil Crop Sciences,2001,23(2):52-56.
Authors:ZHOU Le-cong    TANG Wen-hua
Institution:ZHOU Le-cong 1,2,TANG Wen-hua 2
Abstract:out of 39 isolates of Nidula spp from Yunnan province showed clear inhibition zone in dual culture test with S.sclerotiorum . Greenhouse trials with cultural filtrate of BNF71 and BNF137 showed reduction disease incidence by 98.8% and 86.1%, inhibition lesion enlargement by 99.7% and 97.9%, respectively. Wheat bran culture preparation of BNF71 was also effective in suppression of rapeseed seedling stem rot caused by S.sclerotiorum , with disease decreased by 85.2%. In addition to the highly antagonism against S.sclerotiorum , BNF71 and BNF162 were able to inhibit Aspergillus niger, A.flavus, Pythium ultimum, Rhizoctonia solani and Drechslera sorokiniana in vitro . Nidula isolates possessed high xylanase activity, and BNF134 exhibited significant exo-chitinase activity.
Keywords:Nidula  Rapeseed (  Brassica napus  L  )  Biological control  Sclerotinia sclerotiorum
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