Arsenic Uptake, Toxicity, Detoxification, and Speciation in Plants: Physiological, Biochemical, and Molecular Aspects.
Arsenic Uptake, Toxicity, Detoxification, and Speciation in Plants: Physiological, Biochemical, and Molecular Aspects.
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DOI：
10.3390/ijerph15010059
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发表时间：
2018-01-02
影响因子：
--
通讯作者：
Natasha
中科院分区：
文献类型：
--
作者：
Abbas G;Murtaza B;Bibi I;Shahid M;Niazi NK;Khan MI;Amjad M;Hussain M;Natasha
环境砷污染(As)是一个全球性的环境、农业和健康问题，由于As的剧毒和致癌性质。植物暴露在砷中，即使在很低的浓度下，也会引起许多形态、生理和生化变化。最近对As在土壤-植物系统中的研究表明，As对植物的毒性因其在植物中的形态(如亚砷酸盐，As(III)；砷酸盐，As(V))、植物种类以及控制As在植物中积累的其他土壤因素而不同。不同植物对As(III)或As(V)的吸收、毒性和解毒机制不同。本文简要介绍了土壤中As污染和As形态的来源和全球范围。我们从生理、生化和分子水平上讨论了植物对As(III)和As(V)吸收、毒性和解毒的不同机制。本文着重介绍了砷诱导产生的活性氧(ROS)的重要性及其在生化、遗传和分子水平上对植物的破坏性影响。不同的酶(超氧化物歧化酶、过氧化氢酶、谷胱甘肽还原酶和抗坏血酸过氧化物酶)和非酶(水杨酸、脯氨酸、植物络合蛋白、谷胱甘肽、一氧化氮和磷)物质在As(III/V)胁迫下的作用已被描述为植物物种中的转运和毒害途径。值得注意的是，这篇综述阐述了目前正在出现的(尽管部分了解)以下方面的内容：(1)砷诱导植物的生理、生化和遗传毒性机制和反应；(2)不同分子在植物砷诱导的毒性调节中的作用。我们还提供了一些需要填补的重要研究空白，以促进我们对土壤-植物系统中砷这一研究领域的科学理解。
Environmental contamination with arsenic (As) is a global environmental, agricultural and health issue due to the highly toxic and carcinogenic nature of As. Exposure of plants to As, even at very low concentration, can cause many morphological, physiological, and biochemical changes. The recent research on As in the soil-plant system indicates that As toxicity to plants varies with its speciation in plants (e.g., arsenite, As(III); arsenate, As(V)), with the type of plant species, and with other soil factors controlling As accumulation in plants. Various plant species have different mechanisms of As(III) or As(V) uptake, toxicity, and detoxification. This review briefly describes the sources and global extent of As contamination and As speciation in soil. We discuss different mechanisms responsible for As(III) and As(V) uptake, toxicity, and detoxification in plants, at physiological, biochemical, and molecular levels. This review highlights the importance of the As-induced generation of reactive oxygen species (ROS), as well as their damaging impacts on plants at biochemical, genetic, and molecular levels. The role of different enzymatic (superoxide dismutase, catalase, glutathione reductase, and ascorbate peroxidase) and non-enzymatic (salicylic acid, proline, phytochelatins, glutathione, nitric oxide, and phosphorous) substances under As(III/V) stress have been delineated via conceptual models showing As translocation and toxicity pathways in plant species. Significantly, this review addresses the current, albeit partially understood, emerging aspects on (i) As-induced physiological, biochemical, and genotoxic mechanisms and responses in plants and (ii) the roles of different molecules in modulation of As-induced toxicities in plants. We also provide insight on some important research gaps that need to be filled to advance our scientific understanding in this area of research on As in soil-plant systems.
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影响因子：
4.3
作者：
Al-Huqail, Arwa A.;AL-Rashed, Sarah A.;Qureshi, Mohammad Irfan
通讯作者：
Qureshi, Mohammad Irfan
影响因子：
4.9
作者：
Abedin, MJ;Cotter-Howells, J;Meharg, AA
通讯作者：
Meharg, AA
影响因子：
3.6
作者：
Abbas, Ghulam;Saqib, Muhammad;Hussain, Amjad
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影响因子：
13.6
作者：
Ahmad, Mohd Anwar;Gaur, Rashmi;Gupta, Meetu
通讯作者：
Gupta, Meetu
影响因子：
11.4
作者：
Ackerman, AH;Creed, PA;Vela, NP
通讯作者：
Vela, NP