稀有土壤微生物调解了植物的吸收:原生体的中心作用
Xingguo He1, Xian Xiao1, Weiwei Wei2
1School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
The Science of the total environment
|November 15, 2023
概括
失去稀有土壤微生物显著减少了植物的吸收,但增加了麦草生物量. 罕见的微生物,特别是原生虫,对于污染土壤中的植物提取至关重要.
科学领域:
- 环境微生物学环境微生物学
- 土壤科学 土壤科学
- 植物疗法 (Phytoremediation) 是一种植物疗法.
背景情况:
- 树叶球微生物调解元素循环,影响重金属污染的植物修复.
- 稀土微生物群落在植物修复中的作用尚不清楚.
- 微生物多样性的丧失会影响土壤功能和植物健康.
研究的目的:
- 调查罕见微生物群落丧失对树根球微生物群结构和功能的影响.
- 评估对麦草 (Lolium multiflorum Lam.) 的影响. 增长和 (Cd) 的吸收.
- 确定关键的微生物群体和驱动Cd植物提取的相互作用.
主要方法:
- 在土壤微观宇宙中使用稀释到灭绝方法模拟罕见的微生物损失.
- 通过16S,18S和ITS的rRNA基因测序分析了细菌,真菌,原生体和微生物群落.
- 量化了麦草的生物量,高度和Cd吸收;分析了微生物群落结构,多样性和共发生网络.
主要成果:
- 在稀有物种消失的土壤中,草的Cd吸收显著下降 (52.3473.71%),表明缺乏功能冗余.
- 在稀有物种丧失土壤中,植物生物量增加了1.79倍,植物高度增加了41.02%.
- 稀有物种的消失减少了微生物的α-多样性,改变了社区结构,并改变了功能潜力,原生动物受到特别影响.
结论:
- 罕见的微生物,特别是原生虫,在从污染的土壤中提取植物中发挥着至关重要的作用.
- 原生体和细菌的多样性,以及原生体-真菌网络连接,显著影响植物Cd吸收和生长.
- 这些发现强调了保护罕见的微生物群落对于有效的植物修复策略的重要性.
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