转Cry30Fa1基因抗褐飞虱水稻的获得及鉴定
收稿日期: 2015-12-25
修回日期: 2016-01-15
网络出版日期: 2016-05-10
基金资助
国家转基因生物新品种培育科技重大专项(2011ZX08001001)
Development and Identification of Insect Resistant Transgenic Rice with Cry30Fa1 Gene
Received date: 2015-12-25
Revised date: 2016-01-15
Online published: 2016-05-10
将编码高效杀褐飞虱蛋白的苏云金芽胞杆菌基因Cry30Fa1密码子改造后,通过农杆菌介导法转入蜀恢818(R818),并最终获得46个转基因植株。通过定量PCR及Western Blot鉴定了Cry30Fa1在转录水平和蛋白水平的表达,并通过分子检测固定稳定表达的抗性基因,并结合传统育种系谱法选择具有优良农艺性状株系。对选育的株系在室内和大田环境下进行了抗虫性鉴定,选育的R818-Cry30Fal株系抗性明显优于亲本材料并达到抗的水平;在单株抗虫试验中,观察到了转基因株系对褐飞虱具有致死作用。说明转入Cry30Fa1基因使水稻产生了对褐飞虱抗性。培育出了具有抗褐飞虱蛋白的新型恢复系R818-Cry30Fal,为三系杂交育种提供了新的抗性材料并丰富了抗褐飞虱水稻种质资源。
王海鹏, 黄晓西, 梁越洋, 朱军, 张翠霞, 王秀梅, 贡常委, 郑爱萍, 邓其明, 李双成, 王玲霞, 李平, 王世全 . 转Cry30Fa1基因抗褐飞虱水稻的获得及鉴定[J]. 中国水稻科学, 2016 , 30(3) : 256 -264 . DOI: 10.16819/j.1001-7216.2016.5190
Modified Cry30Fa1, a Bacillus thuringiensis (Bt) gene encoding a high-efficiency insecticidal protein to the brown planthopper(BPH),was introduced into Shuhui 818(R818) by Agrobacterium-mediated genetic transformation and 46 transgene lines were obtained. We confirmed the valid transformation by RT-qRCR and Western blot at transcriptional level and translational level, and fixed the stable expression Cry30Fa1 in homozygosis. The classical pedigree breeding methods were also used to select the important agronomic traits in transgenic lines. Furthermore, we evaluated the resistance to BPH of different lines in growth chamber and field, and found that the R818-Cry30Fal displayed higher resistance than untransformed R818 in seedling stage. We also observed the reduced population of BPH feeding the transgenic lines, suggesting that the transformed Cry30Fa1 enhanced resistibility to BPH in rice. We cultivated new BT protein transgenic rice restorer line R818-Cry30Fal, which may provide new BPH resistance material to three line hybrid rice breeding and enrich BPH resistance germplasm resources in rice.
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