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植物研究 ›› 2019, Vol. 39 ›› Issue (5): 779-787.doi: 10.7525/j.issn.1673-5102.2019.05.017

• 研究报告 • 上一篇    下一篇

H2S作为植物个体间交流的气体信号分子

刘志强, 曹纯玉, 李亚文, 渠娟娟, 贾云乾, 裴雁曦   

  1. 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, 太原 030006
  • 收稿日期:2019-01-17 出版日期:2019-09-05 发布日期:2019-07-16
  • 通讯作者: 裴雁曦 E-mail:peiyanxi@sxu.edu.cn
  • 作者简介:刘志强(1981-),男,博士,副教授,主要研究方向为植物分子生理。
  • 基金资助:
    国家自然科学基金(31671605)

H2S as A Gasotransmitter for Communication between Plant Individuals

LIU Zhi-Qiang, CAO Chun-Yu, LI Ya-Wen, QU Juan-Juan, JIA Yun-Qian, PEI Yan-Xi   

  1. School of Life Science, Shanxi University, Key Laboratory for Research and Development of Regional Plants, Taiyuan 030006
  • Received:2019-01-17 Online:2019-09-05 Published:2019-07-16
  • Supported by:
    National Natural Science Foundation of China(31671605)

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LCDDES1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。

关键词: 硫化氢, 挥发物, 植物交流, 胁迫

Abstract: 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. H2S has been reported as an intracellular gasotransmitter which can increase the tolerance of plant to multiple stresses. We explored the possibility of H2S to be a plant-to-plant signaling molecule in multiple plants. The H2S 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 H2S content and the expression levels of the H2S 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, H2S not only functions as an intracellular signal molecule, but also serves as an information transfer molecule between plant individuals, that is, by releasing H2S 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.

Key words: hydrogen sulphide, volatiles, plant communication, stress

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