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H_2S作为植物个体间交流的气体信号分子
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  • 英文篇名:H_2S as A Gasotransmitter for Communication between Plant Individuals
  • 作者:刘志强 ; 曹纯玉 ; 李亚文 ; 渠娟娟 ; 贾云 ; 裴雁曦
  • 英文作者:LIU Zhi-Qiang;CAO Chun-Yu;LI Ya-Wen;QU Juan-Juan;JIA Yun-Qian;PEI Yan-Xi;School of Life Science,Shanxi University,Key Laboratory for Research and Development of Regional Plants;
  • 关键词:硫化氢 ; 挥发物 ; 植物交流 ; 胁迫
  • 英文关键词:hydrogen sulphide;;volatiles;;plant communication;;stress
  • 中文刊名:植物研究
  • 英文刊名:Bulletin of Botanical Research
  • 机构:山西大学生命科学学院特色植物资源研究与利用山西省重点实验室;
  • 出版日期:2019-07-18 13:55
  • 出版单位:植物研究
  • 年:2019
  • 期:05
  • 基金:国家自然科学基金(31671605)~~
  • 语种:中文;
  • 页:141-149
  • 页数:9
  • CN:23-1480/S
  • ISSN:1673-5102
  • 分类号:Q945
摘要
植物遭受到昆虫取食、创伤及非生物胁迫时,会向环境中释放多种挥发性物质,直接或间接地帮助受胁迫植株抵抗伤害。同时,这些挥发性物质向附近的健康植株传递信息,以应对可能到来的侵害。硫化氢(H2S)作为细胞内气体信号分子提高植物对多种胁迫的抗性已有报道,本论文对H2S是否作为植物个体间传递信息的信号分子进行了研究。结果表明:40%PEG 8000处理可以使谷子、白菜、番茄和拟南芥Col-0植株所在环境空气中H2S含量升高;谷子和拟南芥Col-0植株经PEG 8000处理后,可以使邻近的非胁迫植株叶片的H2S含量升高和H2S响应基因表达变化,并诱导非胁迫植株气孔关闭;而拟南芥内源H2S产生酶基因LCD和DES1双基因突变体lcd/des1经PEG 8000处理,不能引起空气中和邻近植物的H2S含量升高,不能诱导邻近植株气孔关闭。本论文表明,H2S可以作为植物个体间的信息传递分子;即受胁迫植物通过向周围环境中释放H2S,向邻近植株提供胁迫预警信息,可能对种群的生存有重要意义。
        Plant releases a variety of volatile substances into the environment when they suffered from insect feeding,wound or abiotic stress,to help plant combat the damage directly or indirectly. These volatile substances can also provide a precaution for the nearby plants to cope with the incoming threat. H2 S has been reported as an intracellular gasotransmitter which can increase the tolerance of plant to multiple stresses. We explored the possibility of H2 S to be a plant-to-plant signaling molecule in multiple plants. The H2 S concentrations in air increased when the foxtail millet,Chinese cabbage,tomato or Arabidopsis seedlings were treated with 40% PEG 8000. When the Arabidopsis or the foxtail millet was treated with PEG 8000,the H2 S content and the expression levels of the H2 S response genes in the neighboring non-stressed plants were increased,and the stomatal closure of these plant was also induced. However,when the lcd/des1 was treated with PEG 8000,not a similar phenomenon could be observed in the neighboring plants of this mutant.Therefore,H2 S not only functions as an intracellular signal molecule,but also serves as an information transfer molecule between plant individuals,that is,by releasing H2 S into the surrounding environment,plants under stress can provide early warning information of stress to their neighboring plants,which may be of great significance to the survival of the population.
引文
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