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稻瘟病新抗性基因Pita2候选基因的表达载体构建

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为了验证稻瘟病新抗性基因Pita2的功能,利用长片段PCR技术从基因的供体品种PiNo.4中扩增了2个候选基因Pita2-1,Pita2-2,长度分别为6.1kb和16.5kb,电泳回收目的片段,然后利用双酶切分别克隆到植物表达载体pCAMBIA1300.对阳性克隆通过菌落PCR、酶切鉴定和测序分析,已成功地获得了2个候选基因的重组阳性克隆,为进一步研究Pita2基因的功能奠定了基础.
Construction of Expression Vector for Candidate Genes of New Rice Blast Resistance Gene Pita2
Rice blast is one of the most devastating diseases of rice, and a serious threat to rice production. Exploring new rice blast resistance genes for breeding disease resistance strains is an important strategy. To study the function of two candidate genes Pita2-1 and Pita2-2, long-range PCR(LR-PCR) was employed to amplify the candidate genes from genomic DNA of the resistant cultivar PiNo.4. The appropriate products of Pita2-1(6.1 kb)and Pita2-2(16.5 kb) were purified and then ligated into the binary vector pCAMBIA1300 respectively. The positive clones were confirmed by colony PCR, restriction endonuclease digestion and sequencing, thus laid a foundation for dissecting the function of gene Pita2.

rice blast diseasecandidate resistance genelong-range PCRexpression vector

张骥诚、张向明、王春台、刘学群、徐鑫、刘新琼

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中南民族大学生命科学学院生物技术国家民委重点实验室,武汉,430074

稻瘟病 候选抗性基因 长片段PCR技术 表达载体

国家自然科学基金湖北省自然科学基金湖北省自然科学基金

309715632009CDA1252010CDB02006

2011

湖北农业科学
湖北省农业科学院 华中农业大学 长江大学 黄冈师范学院

湖北农业科学

CSTPCD北大核心
影响因子:0.442
ISSN:0439-8114
年,卷(期):2011.50(10)
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