黄巍, 李静, 庄艺, 等. 植物生物钟抵御生物胁迫研究进展[J]. 华南农业大学学报, 2022, 43(6): 121-129. DOI: 10.7671/j.issn.1001-411X.202209008
    引用本文: 黄巍, 李静, 庄艺, 等. 植物生物钟抵御生物胁迫研究进展[J]. 华南农业大学学报, 2022, 43(6): 121-129. DOI: 10.7671/j.issn.1001-411X.202209008
    HUANG Wei, LI Jing, ZHUANG Yi, et al. Research advances in circadian clock of plant in response to biotic stress[J]. Journal of South China Agricultural University, 2022, 43(6): 121-129. DOI: 10.7671/j.issn.1001-411X.202209008
    Citation: HUANG Wei, LI Jing, ZHUANG Yi, et al. Research advances in circadian clock of plant in response to biotic stress[J]. Journal of South China Agricultural University, 2022, 43(6): 121-129. DOI: 10.7671/j.issn.1001-411X.202209008

    植物生物钟抵御生物胁迫研究进展

    Research advances in circadian clock of plant in response to biotic stress

    • 摘要: 生物钟是生物在适应环境中进化出的一种内源性计时机制,能帮助生物“预判”环境的周期性变化,提前调整生命活动,以增强其环境适应性。生物钟对植物生长发育和病虫害防御至关重要。在不同的时间,病原菌及昆虫对植物的侵害能力不同,生物钟能帮助植物“预测”病原菌和昆虫的攻击时间,提前激活定时防御,这种依赖时间的门控效应方式调节特定病原侵害可以减少不必要的能量消耗,增强防御能力。另一方面,植物在受到生物胁迫时,体内的激素、活性氧和离子稳态等水平的变化,能反馈调节并重塑生物钟。研究生物钟和免疫的关系有助于提高重要经济作物的抗病能力,减少农药使用并提高作物产量。本文主要阐述植物生物钟与植物免疫互作的分子机制。并对未来生物钟和免疫关系的研究在作物中的应用进行了展望。

       

      Abstract: The circadian clock is an endogenous and self-sustaining timing mechanism that evolved to track daily rhythms and allow plants to prepare for predictable and recurring environmental changes, ultimately enhancing fitness and adaptation. The circadian clock plays a vital role in plant growth and development as well as pest and pathogen resistance. Pathogen and pest have different attacking capacity at different time. The circadian clock enables plants to anticipate the time of pathogen and pest attacks and promote the defence responses at the most effective time of the day. The circadian gating responses can increase resistance without substantial energy consumption. On the other hand, the changes in the level of phytohormones, reactive oxygen species (ROS) and ion homeostasis caused by biotic stresses are involved in clock resetting. Studying the correlation between circadian clock and immunity will increase plant pathogen resistance and reduce pesticides usage which would have a great agronomic impact on future crop breeding. Here we review the recent research on the interaction between the circadian clock and plant immunity, and highlight new avenues for future research.

       

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