干扰土壤中的土壤微生物群落的决定性发展取决于生物菌的微生物生物质
Yuri Pinheiro Alves de Souza1,2, Michael Schloter1,2, Wolfgang Weisser3
1Helmholtz Zentrum München, Research Unit Comparative Microbiome Analysis, Neuherberg, Germany.
Microbial ecology
|August 25, 2023
概括
在干扰后,土壤微生物的重新定居受生物质的影响. 较高的注射体生物量导致更可预测的细菌和考古社区在扰乱的土壤中的发展.
科学领域:
- 土壤微生物学 土壤微生物学
- 生态系统的恢复生态系统的恢复
- 微生物生态学 微生物生态学
背景情况:
- 了解土壤微生物重新殖民对于干扰后的生态系统服务至关重要.
- 影响土壤微生物组恢复的因素在很大程度上是未知的.
研究的目的:
- 为了研究注射剂中的微生物生物质如何影响干扰后的土壤微生物群发育.
- 为了比较细菌和古生物的重新殖民模式在自闭体土壤与不同的注射剂水平.
主要方法:
- 使用的自土,用不同数量的原始土壤接种,以操纵微生物生物质.
- 在4周内使用分子条形编码和qPCR监测细菌和古生物群落.
- 测量溶解有机碳 (DOC),以评估其对微生物生长的影响.
主要成果:
- 在接种土壤中,细菌生物量迅速增加,由于高DOC,超过了土壤的原始水平.
- 复合性细菌在接种土壤中的早期阶段占主导地位,而古老的恢复则取决于接种剂.
- 增加的注射生物量减少了复制物之间的变异性,这表明微生物组的发展是决定性的.
结论:
- 菌群中的微生物生物质,而不仅仅是多样性,在土壤重新殖民中起着关键作用.
- 干扰土壤中的高DOC支持细菌的快速生长,影响社区的组成.
- 当足够的微生物生物量被引入时,决定性过程控制了土壤微生物组的组合.
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