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Biochar-Dual Oxidant Composite Particles Alleviate the Oxidative Stress of Phenolic Acid on Tomato Seed Germination

文献类型： 外文期刊

作者： Tu, Yuting 1 ; Shen, Jinchun 2 ; Peng, Zhiping 1 ; Xu, Yanggui 1 ; Li, Zhuxian 1 ; Liang, Jianyi 1 ; Wei, Qiufang 5 ; Zhao, Hongbo 2 ; Huang, Jichuan 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Guangzhou 510640, Peoples R China

2.South China Agr Univ, Coll Hort, Guangzhou 510642, Peoples R China

3.Minist Agr, Key Lab Plant Nutr & Fertilizer South Reg, Guangzhou 510640, Peoples R China

4.Guangdong Key Lab Nutrient Cycling & Farmland Cons, Guangzhou 510640, Peoples R China

5.South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Peoples R China

关键词： p-Coumaric acid; tomato seed germination; biochar; calcium peroxide; persulfate; ROS; metabolome; transcriptome

期刊名称：ANTIOXIDANTS （ 影响因子：7.0； 五年影响因子：7.3 ）

ISSN：

年卷期： 2023 年 12 卷 4 期

页码：

收录情况： SCI

摘要： Phenolic acid is a well-known allelochemical, but also a pollutant in soil and water impeding crop production. Biochar is a multifunctional material widely used to mitigate the phenolic acids allelopathic effect. However, phenolic acid absorbed by biochar can still be released. In order to improve the removal efficiency of phenolic acids by biochar, the biochar-dual oxidant (BDO) composite particles were synthesized in this study, and the underlying mechanism of the BDO particles in ameliorating p-coumaric acid (p-CA) oxidative damage to tomato seed germination was revealed. Upon p-CA treatment, the BDO composite particles application increased the radical length, radical surface area, and germination index by 95.0%, 52.8%, and 114.6%, respectively. Compared to using biochar or oxidants alone, the BDO particles addition resulted in a higher removal rate of p-CA and produced more O-2(center dot-), HO center dot, SO4 center dot- and O-1(2) radicals via autocatalytic action, suggesting that BDO particles removed phenolic acid by both adsorption and free radical oxidation. The addition of BDO particles maintained the levels of the antioxidant enzyme activity close to the control, and reduced the malondialdehyde and H2O2 by 49.7% and 49.5%, compared to the p-CA treatment. Integrative metabolomic and transcriptomic analyses revealed that 14 key metabolites and 62 genes were involved in phenylalanine and linoleic acid metabolism, which increased dramatically under p-CA stress but down-regulated with the addition of BDO particles. This study proved that the use of BDO composite particles could alleviate the oxidative stress of phenolic acid on tomato seeds. The findings will provide unprecedented insights into the application and mechanism of such composite particles as continuous cropping soil conditioners.

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