Alleviation of cadmium phytotoxicity in triacontanol treated Coriandrum sativum L. by modulation of physiochemical attributes, oxidative stress biomarkers and antioxidative system
文献类型： 外文期刊
作者： Sardar, Rehana 1 ; Ahmed, Shakil 1 ; Akbar, Muhammad 2 ; Yasin, Nasim Ahmad 3 ; Li, Guihua 4 ;
作者机构： 1.Univ Punjab, Inst Bot, Lahore, Pakistan
2.Univ Gujrat, Dept Bot, Gujrat 50700, Pakistan
3.Univ Punjab, SSG, RO II Dept, Lahore, Pakistan
4.Guangdong Acad Agr Sci, Guangdong Key Lab New Technol Res Vegetables, Vegetable Res Inst, Guangzhou, Peoples R China
关键词： Antioxidant; Cadmium; Coriander; Oxidative stress; Triacontanol
期刊名称：CHEMOSPHERE （ 影响因子：8.943； 五年影响因子：8.52 ）
ISSN： 0045-6535
年卷期： 2022 年 295 卷
页码：
收录情况： SCI
摘要： Cadmium (Cd) is a hazardous metal that has a significant risk of transfer from soil to edible parts of food crops including shoots and seeds. Reduction of Cd accumulation is required to lower the risk of Cd exposure in humans and animals feeding on metal contaminated parts of such plants. Coriandrum sativum L. (coriander) exposed to Cd showed stress symptoms such as stunted growth, reduced photosynthetic activity and synthesis of chlorophyll pigments. Growth inhibition in Cd-treated plants was attributed to induction of oxidative stress as demonstrated by higher level of stress biomarkers such as electrolyte leakage, lipid peroxidation and hydrogen peroxide. Primary objective of the current study was to observe the ameliorative role of triacontanol (Tria) in Cd-stressed coriander seedlings. For this purpose, coriander seeds were primed with Tria concentrations of 5, 10, and 20 mu mol L-1. Seedlings developed from Tria treated seeds exhibited reduced loss of photosynthetic pigments; mitigated oxidative stress caused by Cd, through improved efficacy of antioxidant machinery comprising superoxide dismutase (SOD), peroxidase (POX), and catalase (CAT) enzymes besides non-enzymatic antioxidants including proline, phenolics and flavonoids. Triacontanol treated seedlings showed enhanced yield attributes suggesting that exogenous Tria could be employed to improve plant tolerance to Cd stress.
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