Effects of Biodegradable Poly (Butylene Adipate‐Co‐Terephthalate) Microplastics on Grain Quality and Defense Mechanism of Wheat

IF 3.7 2区农林科学 Q2 ENVIRONMENTAL SCIENCES

Land Degradation & Development Pub Date : 2025-09-15 DOI:10.1002/ldr.70200

Huijie Yang, Yan Yan, Jiyuan Li, Yuan Du, Jing Wang, Xiaokang Li

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引用次数: 0

Abstract

Biodegradable poly (butylene adipate‐co‐terephthalate) (PBAT) plastics are an important alternative to conventional plastics used in agriculture; PBAT microplastics (MPs) are found in agricultural soils. However, little is known about the effects of PBAT MPs on crop toxicity, especially on edible fruit. Here, the effects of environmentally relevant concentrations of PBAT MPs on the growth, grain quality, and related molecular mechanisms of wheat were investigated using a soil pot experiment. The results showed that PBAT MPs inhibited wheat growth, damaged the root ultrastructure, and decreased mineral levels; these phenotypic effects are consistent with omics evidence showing downregulation of the TCA cycle metabolism and genes involved in metal ion binding. As a defense response to PBAT MPs, grain starch and protein levels decreased by 39.06% and 18.44%, respectively, whereas soluble sugar levels increased by 13.36%. These changes can be attributed to the downregulation of tryptophan metabolism and upregulation of galactose metabolism. The present results indicate the adverse effects of biodegradable MPs on crops, which may have beneficial implications for human dietary health and nutritional intake.

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可生物降解聚己二酸丁二酯-对苯二甲酸酯微塑料对小麦籽粒品质的影响及防御机制

可生物降解聚己二酸丁二酯-对苯二甲酸酯（PBAT）塑料是农业中常规塑料的重要替代品；PBAT微塑料（MPs）存在于农业土壤中。然而，人们对PBAT MPs对作物毒性的影响知之甚少，特别是对可食用水果的毒性。通过盆栽试验，研究了环境相关浓度PBAT MPs对小麦生长、籽粒品质的影响及其相关分子机制。结果表明：PBAT MPs抑制小麦生长，破坏根系超微结构，降低矿物质含量；这些表型效应与组学证据一致，表明TCA循环代谢和参与金属离子结合的基因下调。作为PBAT MPs的防御反应，籽粒淀粉和蛋白质水平分别下降了39.06%和18.44%，可溶性糖水平上升了13.36%。这些变化可归因于色氨酸代谢的下调和半乳糖代谢的上调。目前的结果表明，可生物降解MPs对作物的不利影响，这可能对人类的饮食健康和营养摄入有有益的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Land Degradation & Development 农林科学-环境科学

CiteScore

7.70

自引率

8.50%

发文量

379

审稿时长

5.5 months

期刊介绍： Land Degradation & Development is an international journal which seeks to promote rational study of the recognition, monitoring, control and rehabilitation of degradation in terrestrial environments. The journal focuses on: - what land degradation is; - what causes land degradation; - the impacts of land degradation - the scale of land degradation; - the history, current status or future trends of land degradation; - avoidance, mitigation and control of land degradation; - remedial actions to rehabilitate or restore degraded land; - sustainable land management.