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生态学杂志 ›› 2020, Vol. 39 ›› Issue (12): 4216-4223.doi: 10.13292/j.1000-4890.202012.031

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水杨酸缓解农作物镉毒害的作用机制研究进展

潘九月,屠王满措,关美艳,杨永杰,许萍,陈铭学*,曹珍珍*   

  1. (中国水稻研究所,农业农村部稻米及制品质量监督检验测试中心, 杭州 310006)
  • 出版日期:2020-12-10 发布日期:2021-06-10

Research progress on mechanism of salicylic acid in alleviating cadmium toxicity in crop plants.#br#

PAN Jiu-yue, TU WANG Man-cuo, GUAN Mei-yan, YANG Yong-jie, XU Ping, CHEN Ming-xue*, CAO Zhen-zhen*   

  1. (Rice Product Quality Supervision and Inspection Center of Ministry of Agriculture and Rural Affairs, China National Rice Research Institute, Hangzhou 310006, China).
  • Online:2020-12-10 Published:2021-06-10

摘要: 镉是我国农产品的主要重金属污染物之一,缓解农作物镉污染是农业环境领域关注的热点。水杨酸作为一种重要的植物内源激素,在响应植物的生物或非生物胁迫中起重要作用。近年来研究表明,水杨酸能够有效缓解镉对农作物的毒害作用,为解决作物镉污染问题开辟了一条新途径。本文综述了水杨酸在缓解农作物镉毒害机理的相关研究进展,从细胞壁固定、液泡区室化、改善叶片光合作用、维持矿质元素平衡、诱导抗氧化防御系统以及激素信号互作等方面,系统阐述了水杨酸缓解农作物镉毒害的生理生态机制。针对水杨酸调控镉毒害的具体信号转导机制以及水杨酸与其他信号分子在作物镉毒害防御的互作机制等问题提出了展望,以期为农作物镉污染的生理阻控提供理论基础。

关键词: 水杨酸, 作物, 镉毒害, 作用机制

Abstract: Cadmium (Cd) is one of the main heavy metal pollutants in crop plants. Alleviating Cd toxicity in crops is the focus of agricultural environment research. Salicylic acid (SA), an important endogenous phytohormone, plays a crucial role in mediating plant responses to biotic and abiotic stresses. Recent studies showed that SA can effectively alleviate Cd toxicity in crops, which provides a new strategy to minimize Cd pollution in crops. We summarized the research progress on the role of SA in alleviating Cd toxicity in crops and the underlying physiological and ecological mechanisms, including deposition on root cell walls, vacuole compartmentalization, improving leaf photosynthesis, maintaining mineral element balance, inducing antioxidant defense system and hormonal signaling interaction. Furthermore, we proposed future prospects for the signal transduction pathway of SA in alleviating Cd toxicity and the interaction mechanism of signaling SA and other phytohormones, aiming to provide theoretical basis for controlling Cd accumulation in crops growing in Cdcontaminated soils.

Key words: salicylic acid, crop plant, cadmium toxicity, mechanism.