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首页> 外文期刊>Journal of Experimental Botany >High day and night temperatures distinctively disrupt fatty acid and jasmonic acid metabolism, inducing male sterility in cotton
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High day and night temperatures distinctively disrupt fatty acid and jasmonic acid metabolism, inducing male sterility in cotton

机译：高日和夜晚的温度明显破坏脂肪酸和茉莉酸代谢，诱导棉均匀的雄性不育

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摘要

High temperature stress is an inevitable environmental factor in certain geographical regions. To study the effect of day and night high temperature stress on male reproduction, the heat-sensitive cotton line H05 was subjected to high temperature stress. High day/normal night (HN) and normal day/high night (NH) temperature treatments were compared with normal day/normal night (NN) temperature as a control. At the anther dehiscence stage, significant differences were observed, with a reduction in flower size and filament length, and sterility in pollen, seen in NH more than in HN. A total of 36 806 differentially expressed genes were screened, which were mainly associated with fatty acid and jasmonic acid (JA) metabolic pathways. Fatty acid and JA contents were reduced more in NH than HN. Under NH, ACYL-COA OXIDASE 2 (ACO2), a JA biosynthesis gene, was down-regulated. Interestingly, aco2 CRISPR-Cas9 mutants showed male sterility under the NN condition. The exogenous application of methyl jasmonate to early-stage buds of mutants rescued the sterile pollen and indehiscent anther phenotypes at the late stage. These data show that high temperature at night may affect fatty acid and JA metabolism in anthers by suppressing GhACO2 and generate male sterility more strongly than high day temperature.
机译：高温胁迫是某些地理区域的不可避免的环境因素。为了研究日夜高温胁迫对雄性繁殖的影响，对热敏棉线H05进行高温胁迫。将高日/常夜（HN）和正常日/高夜（NH）温度处理与正常日/常夜（NN）温度进行比较。在花药裂开阶段，观察到显着差异，随着花花序和花粉中的无菌，在NH中观察到的显着差异，比在HN中。筛选总共36个806个差异表达基因，其主要与脂肪酸和茉莉酸（JA）代谢途径有关。脂肪酸和JA含量比HN更多地减少更多。在NH下，下调酰基-CoA氧化酶2（ACO2），JA生物合成基因。有趣的是，ACO2 CRISPR-CAS9突变体在NN条件下显示雄性不育。茉莉酸甲酯对突变体早期芽的外源性施用在晚期的无菌花粉和诱导的花药表型。这些数据显示，通过抑制GHACO 2，夜间的高温可能会影响花药中的脂肪酸和JA代谢并产生比高日温度更强烈的雄性不育。

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  • 来源
    《Journal of Experimental Botany》 |2020年第19期|共14页
  • 作者

    Khan Aamir Hamid; Min Ling; Ma Yizan; Wu Yuanlong; Ding Yuanhao; Li Yanlong; Xie Sai; Ullah Abid; Shaban Muhammad; Manghwar Hakim; Shahid Muhammad; Zhao Yunlong; Wang Chaozhi; Zhang Xianlong;

  • 作者单位

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Natl Key Lab Crop Genet Improvement Wuhan 430070 Hubei Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 植物学;
  • 关键词

    ACYL-COA OXIDASE 2; cotton; fatty acids; high temperature; jasmonic acid; RNA-Seq;

    机译：酰基-CoA氧化酶2;棉;脂肪酸;高温;茉莉酸;RNA-SEQ;

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