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在缓解Capsicum annuum中毒性的生理和分子机制

Chuang Shen¹, Huiling Fu¹, Baifei Huang¹

¹Research Center for Environmental Pollution Control Technology, School of Chemical and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China.

The Science of the total environment

|August 14, 2023

概括

的应用改善了叶的生长和在压力下进行光合作用. 它增强细胞壁中的保留,增强抗氧化防御,最终减少积累.

科学领域:

植物生理学植物生理学
环境科学环境科学
生物化学生化学

背景情况:

土壤 (Cd) 污染对食品安全和健康构成风险.
(B) 可能会减少植物根中的Cd吸收,但其在Cd应激下叶子中的作用不太清楚.
研究B对基因表达,代谢物,叶子生长和叶中Cd积累的影响至关重要.

研究的目的:

研究B对叶生长和在Cd压力下Cd积累的影响.
为了确定B如何影响热胡叶中的基因表达和生理参数.
阐明B减轻植物中Cd毒性的机制.

主要方法:

(B) 在 (Cd) 压力下的 (B) 应用于热植物.
测量包括叶绿素,二氧化碳度,口腔导电,光合作用和透气率在内的生理参数.
转录组测序以分析与细胞壁组件,抗氧化酶和金属载体相关的基因表达.
对pectin甲基化酶活性的测定和Cd在细胞壁中的保留量的量化.

主要成果:

B应用显著改善了Cd压力中的光合作用率 (18-41%) 和含量.
通过调高与pectin,lignin和callose相关的基因和增加pectin甲基化酶活性 (30%),B增强了细胞壁中的Cd保留率,导致Cd保留率提高了~31%.
B增强了抗氧化酶活动 (28-40%) 和参与硫代谢,HIPP和金属载体 (CAX3,YSL,ABC,ZIP,DTX) 的基因的上调,提高了Cd的耐受性.

结论:

的应用减轻了Cd对叶生长和光合作用的负面影响.
B促进了Cd的分离和保留在细胞壁中,减少了其转移到果实中.
的应用增强了植物对Cd诱导的氧化应激的防御机制,并加强了整体的Cd耐受性.

关键词:

抗氧化剂是一种抗氧化剂.这是一种重金属,重金属.有热的胡,的胡.微观元素的微观元素光合作用光合作用转录基因组序列的测序

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