Interactive Effect of Microplastics and Fungal Pathogen Rhizoctonia solani on Antioxidative Mechanism and Fluorescence Activity of Invasive Species Solidago canadensis

文献类型： 外文期刊

第一作者： Anas, Muhammad

作者： Anas, Muhammad;Dai, Zhi-Cong;Anas, Muhammad;Zhang, Rui-Ke;Dai, Zhi-Cong;Khan, Irfan Ullah;Qi, Shan-Shan;Dai, Zhi-Cong;Du, Dao-Lin

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关键词： microplastics; invasive species; fungal pathogen; ecosystem; antioxidants; extracellular enzymes

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2025 年 14 卷 13 期

页码：

收录情况： SCI

摘要： Microplastics and invasive species, driven by anthropogenic activities, significantly disrupt ecosystems and microbial communities. This study investigated the interactive effects of biodegradable microplastics (polylactic acid, or PLA, and polyhydroxyalkanoates, or PHAs) and the fungal pathogen Rhizoctonia solani on the invasive plant Solidago canadensis. One plant of Solidago canadensis/pot was cultivated in forest soil amended with 1% (w/w) microplastics and/or R. solani. PLA exhibited greater toxicity than PHAs, reducing the plant height, root length, and biomass by 68%, 44%, and 70%, respectively. Microplastics impaired the maximum quantum yield of photosystem II more severely than R. solani. However, S. canadensis demonstrated adaptive antioxidative and extracellular enzymatic mechanisms under combined stresses. A heatmap analysis revealed a positive correlation between PHAs and plant growth traits, while a redundancy analysis explained the 15.96% and 4.19% variability for the first two components (r(2) = 0.95). A structural equation model indicated the negative effects of morphology and physiology on biomass (beta = -1.694 and beta = -0.932; p < 0.001), countered by positive antioxidant contributions (beta = 1.296; p < 0.001). These findings highlight complex interactions among microplastics, pathogens, and invasive species, offering insights into ecological management strategies under dual environmental pressures. Future studies should assess the long-term field effects and microbial mediation of these interactions.

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