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当前位置: 首页 > 文章 > Attenuation of ethylene signaling increases cotton resistance to a defoliating strain of Verticillium dahliae 作物学报(英文版) 2023,11 (1)
Position: Home > Articles > Attenuation of ethylene signaling increases cotton resistance to a defoliating strain of Verticillium dahliae The Crop Journal 2023,11 (1)

Attenuation of ethylene signaling increases cotton resistance to a defoliating strain of Verticillium dahliae

作  者：
Tianyi Wang;Muhammad Shaban;Junhui Shi;Weiran Wang;Shiming Liu;Xiaoqin Nie;Yu Yu;Jie Kong;Steven J. Klosterman;Xianlong Zhang;Alifu Aierxi;Longfu Zh
单  位：
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China;Institute of Economic Crops, Xinjiang Academy of Agricultural Sciences, Kuqa 842000, Xinjiang, China;United States Department of Agriculture, Agricultural Research Service, Salinas, CA 93905, USA; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China;Department of Plant Breeding and Genetics, University of Agriculture Faisalabad, Sub-Campus Burewala, Punjab 61010, Pakistan;Key Laboratory of Oasis Eco-agriculture of the Xinjiang Production and Construction Crops, College of Agronomy, Shihezi University, Shihezi 832000, Xinjiang, China;National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, Chin;Xinjiang Academy of Agricultural & Reclamation Sciences, Shihezi 832000, Xinjiang, China
关键词：
Cotton;Verticillium dahilae;Ethylene;Defoliatio
摘  要：
The severity of Verticillium wilt on cotton caused by defoliating strains of Verticillium dahliae has gradu-ally increased and threatens production worldwide. Identification of the molecular components of leaf defoliation may increase cotton tolerance to V. dahliae. Ethylene, a major player in plant physiological processes, is often associated with senescence and defoliation of plants. We investigated the cotton-V. dahliae interaction with a focus on the role of ethylene in defoliation and defense against V. dahliae. Cotton plants inoculated with V. dahliae isolate V991, a defoliating strain, accumulated more ethylene and showed increased disease symptoms than those inoculated with a non-defoliating strain. In cotton with a transiently silenced ethylene synthesis gene (GhACOs) and signaling gene (GhEINs) during cot-ton-V. dahliae interaction, ethylene produced was derived from cotton and more ethylene increased cot-ton susceptibility and defoliation rate. Overexpression of AtCTR1, a negative regulator in ethylene signaling, in cotton reduced sensitivity to ethylene and increased plant resistance to V. dahliae. Collectively, the results indicated precise regulation of ethylene synthesis or signaling pathways improve cotton resistant to Verticillium wilt.(c) 2022 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC -ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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