镉的毒性:植物防御系统对镉的吸收和报复以及 ja 信号传递。

IF 4.1 3区 生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Biometals Pub Date : 2024-01-11 DOI:10.1007/s10534-023-00569-8
Shruti Kaushik, Alok Ranjan, Anmol Sidhu, Anil Kumar Singh, Geetika Sirhindi
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引用次数: 0

摘要

镉(Cd+2)会造成多种环境压力,对包括植物在内的几乎所有生物体都有剧毒。镉通过不必要地增加 ROS 来产生毒性,而 ROS 会攻击植物体内的重要分子和基本过程。为此,植物建立了一系列机制来抵消镉的毒性。这些机制的主要内容包括镉螯合、螯合到液泡中、通过转运体调整镉吸收以及增强抗氧化机制。植物激素和活性氧(ROS)等信号分子会激活 MAPK 级联、激活抗氧化系统以及不同信号分子之间的协同串扰,从而调节植物对镉毒性的反应。WRKY、MYB、bHLH、bZIP、ERF、NAC 等转录因子位于 MAPK 的下游,是调节植物镉毒性反应的关键因素。除此以外,MAPK 和 Ca2+ 信号在纠正植物镉胁迫中也有重要作用。本综述强调了镉的吸收、转运和解毒机制,以及防御系统、MAPKs、Ca2+ 信号和茉莉酸在胁迫条件下通过同步管理其他各种调节因子和信号成分来报复镉毒性的关键作用。
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Cadmium toxicity: its’ uptake and retaliation by plant defence system and ja signaling

Cadmium (Cd+2) renders multifarious environmental stresses and highly toxic to nearly all living organisms including plants. Cd causes toxicity by unnecessary augmentation of ROS that targets essential molecules and fundamental processes in plants. In response, plants outfitted a repertory of mechanisms to offset Cd toxicity. The main elements of these are Cd chelation, sequestration into vacuoles, and adjustment of Cd uptake by transporters and escalation of antioxidative mechanism. Signal molecules like phytohormones and reactive oxygen species (ROS) activate the MAPK cascade, the activation of the antioxidant system andsynergistic crosstalk between different signal molecules in order to regulate plant responses to Cd toxicity. Transcription factors like WRKY, MYB, bHLH, bZIP, ERF, NAC etc., located downstream of MAPK, and are key factors in regulating Cd toxicity responses in plants. Apart from this, MAPK and Ca2+signaling also have a salient involvement in rectifying Cd stress in plants. This review highlighted the mechanism of Cd uptake, translocation, detoxification and the key role of defense system, MAPKs, Ca2+ signals and jasmonic acid in retaliating Cd toxicity via synchronous management of various other regulators and signaling components involved under stress condition.

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来源期刊
Biometals
Biometals 生物-生化与分子生物学
CiteScore
5.90
自引率
8.60%
发文量
111
审稿时长
3 months
期刊介绍: BioMetals is the only established journal to feature the important role of metal ions in chemistry, biology, biochemistry, environmental science, and medicine. BioMetals is an international, multidisciplinary journal singularly devoted to the rapid publication of the fundamental advances of both basic and applied research in this field. BioMetals offers a forum for innovative research and clinical results on the structure and function of: - metal ions - metal chelates, - siderophores, - metal-containing proteins - biominerals in all biosystems. - BioMetals rapidly publishes original articles and reviews. BioMetals is a journal for metals researchers who practice in medicine, biochemistry, pharmacology, toxicology, microbiology, cell biology, chemistry, and plant physiology who are based academic, industrial and government laboratories.
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