Production and evaluation of transgenic sweet orange (Citrus sinensis Osbeck) containing bivalent antibacterial peptide genes (Shiva A and Cecropin B) via a novel Agrobacterium-mediated transformation of mature axillary buds

文献类型: 外文期刊

第一作者: He, Yongrui

作者: He, Yongrui;Chen, Shanchun;Peng, Aihong;Zou, Xiuping;Xu, Lanzheng;Lei, Tiangang;Liu, Xiaofeng;Yao, Lixiao;He, Yongrui;Chen, Shanchun;Peng, Aihong;Zou, Xiuping;Xu, Lanzheng;Lei, Tiangang;Liu, Xiaofeng;Yao, Lixiao;He, Yongrui;Chen, Shanchun;Peng, Aihong;Zou, Xiuping;Xu, Lanzheng;Lei, Tiangang;Liu, Xiaofeng;Yao, Lixiao

作者机构:

关键词: Citrus;Citrus canker;Mature axillary bud;Transformation;Disease resistance

期刊名称:SCIENTIA HORTICULTURAE ( 影响因子:3.463; 五年影响因子:3.672 )

ISSN: 0304-4238

年卷期: 2011 年 128 卷 2 期

页码:

收录情况: SCI

摘要: Transgenic plants of Jincheng orange (Citrus sinensis Osbeck) and Newhall navel orange (C. sinensis Osbeck) containing antibacterial peptide genes Shiva A and Cecropin B were successfully obtained by a novel Agrobacterium tumefaciens-mediated transformation of the mature axillary buds. PCR and Southern blot analysis of the transgenic plants verified that the Shiva A and Cecropin B genes were integrated into the citrus genome. The transgenic plants began to blossom and bear fruit in the 2nd year after grafting on trifoliate orange (Poncirus trifoliata Raf) rootstock in greenhouse. Water-soluble extracts from transgenic citrus leaves exhibit in vitro suppressive effects on Xanthomonas axonopodis pv. cirri, suggesting that the expressed products of Shiva A and Cecropin B in citrus retain their native antibacterial activities. Artificial inoculation in greenhouse and open field further indicates significantly increased resistance of transgenic plants to X. axonopodis pv. cirri when compared with non-transgenic lines. No significant difference was found in the content of total soluble solids, total acidity, reduced sugar content and other fruit characteristics between transgenic and non-transgenic plants. In this present study, 11 transgenic lines were obtained from 40 transgenic lines, showing enhanced resistance to citrus canker disease. (C) 2011 Elsevier B.V. All rights reserved.

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