Binding Site Concentration Explains the Differential Susceptibility of Chilo suppressalis and Sesamia inferens to Cry1A-Producing Rice
文献类型: 外文期刊
第一作者: Han, Chao
作者: Han, Chao;Hou, Maolin;Peng, Yufa;Liu, Zewen;Chen, Fajun;Jurat-Fuentes, Juan Luis
作者机构:
关键词: Binding;Site;Concentration
期刊名称:APPLIED AND ENVIRONMENTAL MICROBIOLOGY ( 影响因子:4.792; 五年影响因子:5.26 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Chilo suppressalis and Sesamia inferens are two important lepidopteran rice pests that occur concurrently during outbreaks in paddy fields in the main rice-growing areas of China. Previous and current field tests demonstrate that the transgenic rice line Huahui 1 (HH1) producing a Cry1Ab-Cry1Ac hybrid toxin from the bacterium Bacillus thuringiensis reduces egg and larval densities of C. suppressalis but not of S. inferens. This differential susceptibility to HH1 rice correlates with the reduced susceptibility to Cry1Ab and Cry1Ac toxins in S. inferens larvae compared to C. suppressalis larvae. The goal of this study was to identify the mechanism responsible for this differential susceptibility. In saturation binding assays, both Cry1Ab and Cry1Ac toxins bound with high affinity and in a saturable manner to midgut brush border membrane vesicles (BBMV) from C. suppressalis and S. inferens larvae. While binding affinities were similar, a dramatically lower concentration of Cry1A toxin binding sites was detected for S. inferens BBMV than for C. suppressalis BBMV. In contrast, no significant differences between species were detected for Cry1Ca toxin binding to BBMV. Ligand blotting detected BBMV proteins binding Cry1Ac or Cry1Ca toxins, some of them unique to C. suppressalis or S. inferens. These data support that reduced Cry1A binding site concentration is associated with a lower susceptibility to Cry1A toxins and HH1 rice in S. inferens larvae than in C. suppressalis larvae. Moreover, our data support Cry1Ca as a candidate for pyramiding efforts with Cry1A-producing rice to extend the activity range and durability of this technology against rice stem borers.
分类号: Q939.9
- 相关文献
作者其他论文 更多>>
-
Individual transmembrane domains of SfABCC2 from Spodoptera frugiperda do not serve as functional Cry1F receptors
作者:Zhong, Jianfeng;Zhong, Jianfeng;Dos Santos, Rafael Ferreira;Abdelgaffar, Heba;de Bortoli, Caroline Placidi;Raza, Ahmad;Jurat-Fuentes, Juan Luis
关键词:Spodoptera frugiperda; ABC transporter; Cytotoxicity; Domains; Cry toxins; Receptors
-
The TaSnRK1-TabHLH489 module integrates brassinosteroid and sugar signalling to regulate the grain length in bread wheat
作者:Lyu, Jinyang;Sun, Na;Yang, Fan;Li, Xuepeng;Mu, Junyi;Zhou, Runxiang;Zheng, Guolan;Yang, Xin;Zhang, Chenxuan;Han, Chao;Xia, Guang-Min;Fan, Min;Bai, Ming-Yi;Wang, Dongzhi;Xiao, Jun;Li, Genying;Xiao, Jun;Xiao, Jun
关键词:wheat grain length; brassinosteroid; sugar; TabHLH489; SnRK1
-
Enterococcus casseliflavus regulates amino acid metabolism in edible insect Clanis bilineata tsingtauica: a functional metagenomics study
作者:Qian, Lei;Deng, Pan;Qin, Yi;Li, Zongnan;Liao, Huaijian;Wang, Yanhui;Chen, Fajun;Zhang, Jia;Liao, Huaijian
关键词:edible insect; Clanis bilineata tsingtauica; metagenomics; dominant gut bacterium; nutrient metabolism
-
Ethylene induced AcNAC3 and AcNAC4 take part in ethylene synthesis through mediating AcACO1 during kiwifruit (Actinidia chinensis) ripening
作者:Fu, Changchun;Han, Chao;Yu, Zuolong;Liu, Dan;Wei, Yunxiao;Han, Yanchao
关键词:NAC; regulate; ethylene; ACO; fruit ripening
-
Molecular characterization of Vitellogenin-like1 gene in Sogatella furcifera (Hemiptera: Delphacidae), and its function on reproduction
作者:Xu, Changyu;Li, Fei;Hou, Maolin;Liu, Yudi
关键词:Sogatella furcifera; vitellogenin-like1; RNAi; ovary; testis
-
Rice varietal resistance to the vector Sogatella furcifera hinders transmission of Southern rice black-streaked dwarf virus
作者:Hou, Maolin;Liu, Dandan;Zhong, Yuqi;Hou, Maolin;Li, Zhengxi
关键词:Sogatella furcifera; Southern rice black-streaked dwarf virus (SRBSDV); electrical penetration graph (EPG); varietal insect resistance; probing behavior; virus transmission
-
Elucidating the biological characteristics and pathogenicity of the highly virulent G2a porcine epidemic diarrhea virus
作者:Li, Chang;Wu, Qiong;Song, Haofei;Lu, Hongyu;Yang, Keli;Liu, Zewen;Liu, Wei;Gao, Ting;Yuan, Fangyan;Zhu, Jiajia;Guo, Rui;Tian, Yongxiang;Zhou, Danna
关键词:highly virulence; pathogenicity; porcine epidemic diarrhea virus