Characterization of Vegetative Insecticidal Protein vip Genes of Bacillus thuringiensis from Sichuan Basin in China

被引：36
|
作者：
Yu, Xiumei [1 ,2 ]
Zheng, Aiping [1 ,2 ]
Zhu, Jun [2 ]
Wang, Shiquan [2 ]
Wang, Lingxia [2 ]
Deng, Qiming [2 ]
Li, Shuangcheng [2 ]
Liu, Huainian [2 ]
Li, Ping [1 ,2 ]
机构：
[1] Sichuan Agr Univ, Minist Educ, Key Lab SW Crop Gene Resource & Genet Improvement, Yaan 625014, Sichuan, Peoples R China
[2] Sichuan Agr Univ, Rice Res Inst, Wenjiang 611130, Sichuan, Peoples R China
来源：
CURRENT MICROBIOLOGY | 2011年 / 62卷 / 03期
关键词：
FREQUENCY; INSECTS; STRAINS; TOXINS;
D O I：
10.1007/s00284-010-9782-3
中图分类号：
Q93 [微生物学];
学科分类号：
071005 ; 100705 ;
摘要：
Vegetative insecticidal proteins (Vip), the second generation of insecticides, are produced during the vegetative growth stage of Bacillus thuringiensis (Bt). To perform a systematic study of vip genes in Bt strains from different ecological regions of Sichuan Basin, 1,789 soil samples were collected from this basin, which is situated in the western region of China. The basin has a complicated geomorphology and contains mountains, forests, highlands, hursts, and plains. A total of 2,134 Bt strains have been screened from the 1,789 soil samples. According to the results, three vip-type genes were found in this basin, namely the vip1, vip2, and vip3-type genes. Strains containing vip3-type genes were the most abundant in our collection (67.4%), followed by vip2-type genes (14.6%) and vip1-type genes (8.1%). The three types of vip genes were distributed in most of the regions, but E Mei Mountain and the Ba Lang Mountains only contained vip3 genes in environments with high elevation, low temperature, insufficient oxygen, and abundant snow. Moreover, five novel vip3 genes were found, and these Vip proteins were toxic for Chilo suppressalis. All the results mentioned above suggest that Sichuan Basin is a rich resource for vip genes.
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收藏
页码：752 / 757
页数：6
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