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微生物酸盐溶解促进稀土元素在中国的Dicranopteris linearis超积聚器中的积累

Wen-Shen Liu¹, Chang-Dong Liu¹, Chang Liu²

¹School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, Sun Yat-sen University, Guangzhou 510006, China.

Environmental science & technology

|August 6, 2025

概括

树叶球微生物有助于稀土元素 (REE) 过度积累植物Dicranopteris linearis积累 REEs. 这是微生物在缺条件下溶解酸盐的副产品.

科学领域:

环境科学环境科学
微生物学微生物学
生物地质化学生物地质化学

背景情况:

稀土元素 (REE) 过度积累的植物Dicranopteris linearis在缺乏的土壤中壮成长.
了解根球微生物群在REE积累中的作用对于植物科学和环境修复至关重要.

研究的目的:

研究根球微生物影响D. linearis.中REE溶解和积累的机制.
为了确定植物营养状况,微生物群落结构和REE吸收之间的关系.

主要方法:

在中国热带和亚热带地区采集了D. linearis和根球土壤的样本.
对土壤特性,植物营养物质含量 (N,P) 和REE度的分析.
16S rRNA测序和元基因组分析以表征根球微生物群落.
通过葡萄糖脱酶 (GCD) 基因丰富度量化微生物酸盐溶解活性.

主要成果:

D. linearis表现出严重的缺乏 (土壤可用P~2毫克/公斤-1,叶子N:P比>20).
树叶球微生物群落结构主要与土壤的可用性有关.
叶子P和REE度与土壤总P和GCD基因丰度正相关,而不是土壤可用的P或可提取的REEs.
酸盐溶解微生物在核心根球微生物群中丰富.

结论:

在D. linearis中REE的积累是微生物在缺乏下酸盐溶解的间接后果.
树叶圈微生物活动,特别是酸盐溶解,驱动REE矿物气候和植物吸收.

关键词:

核心的微生物群.缺乏症是因为缺乏.稀土元素是一种稀土元素.根球效应是根球效应.

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