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Expression of alfalfa antifungal peptide gene and enhance of resistance to Verticillium dahliae in upland cotton

文献类型: 外文期刊

作者: Zhang, Haiping 1 ; Wang, Xuede 1 ; Shao, Mingyan 1 ; Yuan, Shuna 1 ; Ni, Mi 1 ;

作者机构: 1.Zhejiang Univ, Coll Agr & Biotechnol, Dept Agron, Hangzhou 310029, Peoples R China

2.Shanxi Acad Agr Sci, Inst Crop Germplasm Resources, Taiyuan, Peoples R China

关键词: Agrobacterium tumefaciens;cotton;disease-resistance;transformation;Verticillium dahliae

期刊名称:ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE ( 影响因子:1.694; 五年影响因子:1.568 )

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收录情况: SCI

摘要: In order to increase cotton plant resistance to Verticillium dahliae (V. dahliae), an alfalfa antifungal peptide gene (alfAFP), directed by CaMV35S promoter in recombinant binary vector pCAMBIA1301-alf, was delivered into an upland cotton cultivar 5983 (Gossypium hirsutum L.) via an Agrobacterium-mediated hypocotyl system. Molecular analysis confirmed the integration and transcripts of the alfAFP gene in the genome of 12 transformants. In vitro assays showed that crude leaf extracts from transformants was able to significantly (p<0.01) inhibit the growth and proliferation of V. dahliae compared to the extracts from control plants. In vivo assays with fungal pathogens showed that transformants displayed a significant reduction in their disease symptoms compared to control plants. These results suggest that the alfAFP gene was expressed in the upland cotton and its product of gene expression was active in the growth inhibition of V. dahliae.

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