文献类型： 外文期刊

作者： Anas, Muhammad ¹ ; Khan, Irfan Ullah ³ ; Zhang, Rui-Ke ² ; Qi, Shan-Shan ⁴ ; Dai, Zhi-Cong ¹ ; Du, Dao-Lin ⁶ ;

作者机构： 1.Jiangsu Univ, Sch Emergency Management, Zhenjiang 212013, Peoples R China

2.Jiangsu Univ, Inst Environm & Ecol, Sch Environm & Safety Engn, Zhenjiang 212013, Peoples R China

3.Chinese Acad Agr Sci, Inst Cotton Res, Anyang 455000, Peoples R China

4.Jiangsu Univ, Sch Agr Engn, Zhenjiang 212013, Peoples R China

5.Suzhou Univ Sci & Technol, Jiangsu Collaborat Innovat Ctr Technol & Mat Water, Suzhou 215009, Peoples R China

6.Jiangsu Univ, Jingjiang Coll, Zhenjiang 212013, Peoples R China

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.