Invasive and native plants differ in their effects on the soil microbial community and plant-soil phosphorus cycle
文献类型: 外文期刊
作者: Yu, Zhengchao;Sun, Xiaoming;Zeng, Lingda;Sun, Feng;Zhao, Mengxin
作者机构:
关键词: Invasion ecology;soil microbial community;enzyme activity;soil phosphorus fractions;foliar phosphorus fractions
期刊名称: ARCHIVES OF AGRONOMY AND SOIL SCIENCE
ISSN: 0365-0340
年卷期: 2025 年 71 卷 1 期
页码:
收录情况: SCIE(2025版)
摘要: Exploring invasive plant and soil phosphorus cycling is an important objective in ecological research. We collected soil and plant samples from three abandoned farmlands containing three invasive and native species. We examined soil microbial communities, enzyme activities, and soil phosphorus fractions and we tested plant phosphorus concentrations and foliar phosphorus fractions. The results showed that invasive plants had higher levels of alkaline phosphomonoesterase in their rhizosheath soil. Soil alkaline phosphomonoesterase activity in invasive Mikania micrantha, Bidens pilosa, and Ipomoea cairica was 1.6, 1.9 and 2.4 times greater than that in native Persicaria chinensis, Paederia scandens and Pluchea indica, respectively. Moreover, the abundance of soil glucose dehydrogenase genes of invasive plants was greater than that of native plants, allowing soil microbes to release gluconic acid. Additionally, invasive plants released more root carboxylates than native plants, and both the nucleic acid phosphorus and metabolic phosphorus concentrations in their leaves were higher. Our study suggests that invasive plants can enhance organic phosphorus decomposition by altering soil microbial communities, and their phosphorus utilization efficiency is potentially higher than that of native plants. These findings provide a novel mechanistic explanation for the rapid expansion of invasive species.
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