Characterization of a newly discovered China variety of Metarhizium anisopliae (M. anisopliae var. dcjhyium) for virulence to termites, isoenzyme, and phylogenic analysis

被引:14
作者
Dong, Changjin
Zhang, Jiamin
Chen, Wuguo
Huang, Hai
Hu, Yuanyang [1 ]
机构
[1] Wuhan Univ, State Key Lab Virol, Coll Life Sci, Wuhan 430072, Peoples R China
[2] Hubei Normal Univ, Dept Biol, Huangshi 435002, Peoples R China
基金
中国国家自然科学基金;
关键词
new variety; virulence; isoenzyme; 18s rDNA sequence analysis; phylogenetric tree;
D O I
10.1016/j.micres.2006.07.001
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The efficacy of a new virulent Metarhizium anisopliae variety (M. anisopliae var. dcjhyium, DQ288247) obtained from Odontotermes formosanus in China was evaluated against the subterranean termite, O. formosanus, in the laboratory. The new variety was compared with four other virulent M. anisopliae isolates and was found to be highly infectious and virulent against termites. M. anisopliae var. dcjhyium could cause approximately 100% mortality of termites 3 days post-inoculation in the concentration of 3 x 10(8) conidia/ml. There were also differences in relative hyhal growth and isoenzymes. M. anisopliae var. dcjhyium showed a different isoenzyme band pattern from the four isolates of M. anisopliae (AB027337, AB099510, AB099941 and AF280631). The phytogenetic tree of the 18S rDNA sequences revealed the taxonomic and evolutionary position of M. anisopliae var. dcjhyium. M. anisopliae var. dcjhyium and four isolates of M. anisopliae formed a monophyletic group, supported by a 99% bootstrap value. M. anisopliae var. dcjhyium formed a distinct variety, which had a special characterization of unique bands of isoenzyme, high virulence and tow repellency against termites when compared with four other isolates of M. anisopliae. (c) 2006 Elsevier GmbH. All rights reserved.
引用
收藏
页码:53 / 61
页数:9
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