Journal of Plant Ecology ›› 2025, Vol. 18 ›› Issue (2): 1-14.DOI: 10.1093/jpe/rtaf017

• •    

加拿大一枝黄花通过凋落物渗滤液和根分泌物改变土壤微生物群落和理化性质

  

  • 收稿日期:2024-07-20 接受日期:2025-01-26 出版日期:2025-04-01 发布日期:2025-06-14

Solidago canadensis modifies microbial community and soil physicochemical properties through litter leachates and root exudates

Yanwen Bo1,2, Yali Liao1, Mark Pawlett2, Rasheed Akbar1,3, Nickolas Girkin2,4, Jianfan Sun1,5,*, Amjad Ali6, Naushad Ahmad7, Wei Liu8, Xiaoyan Wang8, and Daolin Du9   

  1. 1Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
    2Faculty of Engineering and Bioscience, Cranfield University, Bedfordshire MK43 0AL, UK
    3Department of Entomology, Faculty of Physical and Applied Sciences, The University of Haripur, Haripur 22062, Pakistan
    4School of Biosciences, University of Nottingham, Loughborough LE12 5RD, UK
    5Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China
    6School of Material Science & Engineering, Jiangsu University, Zhenjiang 212013, China
    7Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
    8College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Hangzhou 311300, China,
    9Jingjiang College, Institute of Environment and Ecology, School of Emergency Management, School of Environment and Safety Engineering, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China

    *Corresponding author. E-mail: zxsjf@ujs.edu.cn
  • Received:2024-07-20 Accepted:2025-01-26 Online:2025-04-01 Published:2025-06-14
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (31971427), Carbon Peak and Carbon Neutrality Technology Innovation Foundation of Jiangsu Province (BK20220030), and the Young Scientist Fund of Jiangsu Province (BK20200905). Part of the funding for this research was supported by the Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment and the Special Scientific Research Project of the School of Emergency Management, Jiangsu University. The authors would also like to thank the Researchers Supporting Project Number (RSPD2025R668), King Saud University, Riyadh, Saudi Arabia.

PDF (PC)

26

摘要： 外来植物通过凋落物、根系分泌物和渗滤液中的化学物质改变土壤微生物群落和理化性质，影响一系列土壤过程，但其具体机制仍不清楚。本研究以中国广泛分布的入侵植物——加拿大一枝黄花(Solidago canadensis)为对象，探讨其在自然条件下对土壤微生物群落和理化性质的影响。实验处理包括加拿大一枝黄花幼苗密度(每盆1和2株)和凋落物量(每盆10和20  g)，并设置了不含植物或凋落物的对照组。实验处理120天后，采集土壤样品，分析其理化性质、GC-MS化学成分，并基于高通量测序测定了细菌群落组成。结果表明，加拿大一枝黄花幼苗和凋落物输入显著增加了土壤的pH、有机质(SOM)和总氮(TN)，而磷和钾则未发生变化。我们识别出66种化学物质，主要包括酮类、醇类、醛类、烃类、 酯类、酸类、萜类和生物碱，这些物质与加拿大一枝黄花的存在相关。此外，Sphingomonas、Acidobacteriales和Gemmatimonas等优势细菌属发生了显著变化，而Candidatus、Rhodoplanes和 Novosphingobium等稀有细菌属与土壤TN、pH和SOM呈正相关。上述研究结果表明，加拿大一枝黄花凋落物和根系分泌物中的化学物质增加显著影响了土壤性质和细菌群落，这可能对生态系统动态和入侵成功产生重要影响。

关键词: 化感作用, 外来植物, 凋落物效应, 根分泌物, 土壤微生物群落, 高通量测序

Abstract: Invasive plants alter soil microbial communities and physicochemical properties through chemical inputs from litter, root exudates and leachate, impacting a range of soil processes, but precise effects are poorly understood. We investigated the little effects of Solidago canadensis, a common invasive species in China, on soil microbial communities under natural conditions. Experimental treatments included S. canadensis seedling density (1 and 2 plants/pot) and litter quantity (10 and 20 g/pot), with control groups containing no plants or litter. After 120 days, soil samples were analyzed for physico-chemical properties, GC–MS chemical composition, and bacterial community composition using high-throughput sequencing. Results showed that S. canadensis seedlings and litter inputs significantly increased soil pH, soil organic matter (SOM), and total nitrogen (TN), while phosphorus and potassium remained unchanged. We identified 66 chemical compounds, predominantly ketones, alcohol, aldehyde, hydrocarbon, ester, acid, terpenoids and alkaloids, associated with the presence of S. canadensis, alongside shifts in dominant bacterial genera including Sphingomonas, Acidobacteriales and Gemmatimonas. Rarer genera under the invasive treatment species, such as Candidatus, Rhodoplanes and Novosphingobium, were positively correlated with soil TN, pH, and SOM. Collectively, these findings demonstrate that allelochemical inputs from S. canadensis litter and root exudates significantly reshape soil properties and microbial communities, with potential implications for ecosystem dynamics and invasion success.

Key words: allelopathy, invasive plant, litter effects, root exudates, soil microbial communities, high-throughput sequencing

Copyright ©2022 版权所有 《植物生态学报》编辑部
地址: 北京香山南辛村20号, 邮编: 100093
Tel.: 010-62836134, 62836138;　Fax: 010-82599431;　E-mail: apes@ibcas.ac.cn, cjpe@ibcas.ac.cn
网站备案号: 京ICP备16067583号-19