Journal of Plant Ecology ›› 2026, Vol. 19 ›› Issue (1): 1-0.DOI: 10.1093/jpe/rtaf144
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Yue Zhu1,2,†, Jun Chen1,†, Yu Ming1,†, Jingru Zhang3, Shaoyu Zhang1, Yunshan Liu1, Bo Li1, Jihua Wu4,*, Evan Siemann5, Yunjian Xu1,*and Yi Wang1,*
1State Key Laboratory of Vegetation Structure, Function and Construction (VegLab), Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China, and Yunnan Key Laboratory of Biological Adaptation, Conservation and Utilization, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming 650500, China, 2College of Civil Engineering and Transportation, Yangzhou University, Yangzhou 225127, China, 3Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station of Wetland Ecosystems of the Yangtze Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai 200438, China, 4State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China, 5Department of Biosciences, Rice University, Houston, TX 77005, USA
*Corresponding authors. E-mail: wjh@lzu.edu.cn(J.W.); xuyunjian1992@ynu.edu.cn(Y.X.); yiwang@ynu.edu.cn(Y.W.)
†These authors contributed equally to this work.
摘要： 理解重金属污染环境中入侵植物与本土植物间植物–土壤反馈(PSF)机制，可为入侵物种防控提供理论依据。然而，镉污染条件下美洲商陆(Phytolacca americana，入侵种)与本土商陆(Phytolacca acinose，本土种)之间的PSF机制尚不明确。本研究通过温室控制实验，在不同镉浓度的土壤中进行美洲商陆、本土商陆及无植物土壤驯化实验，分析土壤理化性质、微生物群落结构的变化。在后续PSF实验中，分别在上述驯化后的土壤中种植美洲商陆和本土商陆并进行差异分析。结果表明，1)土壤镉污染显著增加美洲商陆生物量，但降低本土商陆生物量。2)美洲商陆驯化的土壤中细菌与真菌丰度较高，尤其是在无镉污染条件下更为显著。在有植物生长时，土壤中酚类、黄酮类和单宁浓度以及pH值随镉浓度升高而上升；并且，相比于本土商路处理，美洲商陆处理下酚类与单宁浓度较高，而黄酮类浓度较低。3)在PSF阶段，美洲商陆生物量对土壤微生物响应敏感；本土商陆在入侵植物驯化土壤中(尤其在高镉环境下)生长受到抑制，表明其对土壤理化性质更为敏感。上述研究为深入理解重金属污染土壤中PSF影响入侵过程的机制奠定基础。
