Constructing Bacillus thuringiensis strain that co-expresses Cry2Aa and chitinase
Constructing Bacillus thuringiensis strain that co-expresses Cry2Aa and chitinase
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共表达Cry2Aa和几丁质酶的苏云金芽孢杆菌菌株构建
DOI:
10.1007/s10529-013-1171-0
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发表时间:
2013-03
影响因子:
2.7
通讯作者:
Xia, Liqiu
中科院分区:
文献类型:
--
作者:
Ding, Xuezhi;Hu, Xiaofeng;Yang, Qi;Xia, Liqiu
A triple recombineering technique was used with plasmid pHT315 to produce pHTEC, a construct carrying chitinase and cry2Aa genes from Bacillus thuringiensis subsp. kurstaki 4.0718. Transformation of wild-type B. thuringiensis strain HD73 and the acrystalliferous strain Cry-B with pHTEC resulted in the recovery of recombinant strains that expressed Cry2Aa as cubic crystals in the cell pellet and soluble chitinase protein. The toxicity of HD73 (pHTEC) against Helicoverpa armigera larvae increased sevenfold when compared with HD73 (pHT315) harboring pHT315 vector. The triple recombineering protocol was optimized by comparing recombination efficacy mediated by RecE/RecT and Redα/Redβ and by using single-strand DNA as substrate.
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通讯作者:
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