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在根的吸收,转移和排毒方面,Cr (VI) 的行为与Cr (III) 不同

Adeel Riaz¹, Yuan Qin¹, Qingfeng Zheng¹

¹MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River (Co-construction by Ministry and Province), College of Agriculture, Yangtze University, Jingzhou, China; Hubei Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China.

The Science of the total environment

|July 19, 2024

概括

三价 (Cr(III)) 和六价 (Cr(VI)) 对的生长有不同的影响. 在低水平下,Cr (III) 比Cr (VI) 更有毒,具有不同的吸收和转移模式. 确定了像OsABCs和OsGSTUs这样的关键排毒基因.

科学领域:

植物生物学植物生物学
环境毒理学环境毒理学
分子遗传学分子遗传学

背景情况:

(Cr) 污染对植物生理和生长构成重大威胁.
虽然六价 (Cr(VI)) 的影响已得到充分研究,但三价 (Cr(III)) 的影响仍然不太了解.
了解不同Cr物种的毒性对于管理受污染的环境至关重要.

研究的目的:

为了比较大米植物中Cr (III) 和Cr (VI) 的吸收,转移和毒性.
为了确定涉及到大米根中的排毒的关键基因家族.
阐明特定的排毒基因对不同物种的反应中的作用.

主要方法:

用不同度的Cr (III) 和Cr (VI) 处理大米植物.
根生长抑制和吸收/转移的测量.
根的转录组分析分析基因表达变化.
谷氨S转移酶 (GSTU) 突变体的功能分析.

主要成果:

两种Cr (III) 和Cr (VI) 都抑制了大米根的生长,Cr (III) 在低水平时显示出更大的毒性.
(III) 和 (VI) 呈现出不同的吸收动力学和转移模式,而 (III) 的根到芽转移率更高.
参与排毒的基因家族 (ABC载体,MATE,GSTU) 被上调,特别是Cr(VI),表明它们在管理中的作用.

结论:

在大米中,Cr (III) 和Cr (VI) 具有不同的毒性,吸收和转移机制.
OsABCs和OsGSTUs是理解大米中应激反应的关键候选基因.
这些发现为管理农业系统中污染提供了洞察力.

关键词:

美国ABC运输商ABC运输商 (Chromium) 是一种含的物质.谷氨酸S转移酶是什么细胞内传输细胞内传输在ROS的恒常性中,ROS的恒常性形成.

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