数字农科院2.0

Rhizosphere Microbiome and Nutrient Fluxes Reveal Subtle Biosafety Signals in Transgenic Cotton

文献类型： 外文期刊

作者： Yang, Zheng;Duan, Yuhang;Wei, Renhui;Yuan, Youlu;Yan, Haoliang;Tang, Tong;Shang, Haihong

作者机构：

关键词： transgenic cotton;rhizosphere microbiome;biosafety assessment;microbial diversity;nutrient dynamics

期刊名称： MICROORGANISMS

ISSN：

年卷期： 2025 年 13 卷 12 期

页码：

收录情况： SCIE（2025版）

摘要： Genetically modified crops have transformed agriculture, but their long-term ecological impacts remain incompletely understood. Here we investigate how herbicide-tolerant transgenic cotton affects rhizosphere microbial communities and nutrient cycling over a 28-day growth period using 16S rRNA amplicon sequencing and multivariate analyses. We sampled rhizosphere soil from greenhouse-grown transgenic and wild-type cotton plants at five time points, analyzing microbial diversity, community structure, and nutrient dynamics. Despite initial concerns about transgenic modifications disrupting soil ecosystems, we found no significant differences in microbial alpha-diversity or beta-diversity between genotypes. Only minor, transient changes occurred at the genus level, including <5% shifts in Flavobacterium and Ramlibacter abundance on day 14, alongside brief nutrient flux variations that normalized by day 28. Notably, transgenic plants showed enhanced above-ground biomass accumulation without compromising rhizosphere stability or soil moisture content. These results demonstrate that herbicide-tolerant cotton maintains rhizosphere homeostasis while improving agronomic performance, supporting the environmental safety of this biotechnology for sustainable agricultural intensification.

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