The mineralosphere—interactive zone of microbial colonization and carbon use in grassland soils
The mineralosphere—interactive zone of microbial colonization and carbon use in grassland soils
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草原土壤中微生物定植与碳利用的矿物圈相互作用区
DOI：
10.1007/s00374-021-01551-7
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发表时间：
2021
影响因子：
6.5
通讯作者：
Kandeler E
中科院分区：
文献类型：
--
作者：
Boeddinghaus RS;Marhan S;Gebala A;Haslwimmer H;Vieira S;Sikorski J;Overmann J;Soares M;Rousk J;Rennert T;Kandeler E
为了提高我们的理解，早期微生物定植的原始矿物和他们的组特定的C利用，我们暴露的矿物（伊利石/针铁矿/石英）修改与人工根分泌物（ARE，葡萄糖，柠檬酸）在草原土壤中为期24周。FTIR光谱表明，矿物相关的ARE使用的前2周内的曝光，并取代其他碳水化合物来自活的或死的细胞，以及土壤传播的C源输送到矿化圈后大雨事件。真菌和革兰氏阳性菌纳入ARE衍生的C比革兰氏阴性菌更迅速。革兰氏阴性菌可能间接受益于ARE交叉喂养的矿物相关的真菌和革兰氏阳性菌的坏死团块。革兰阴性菌门Verrucomicrobia、Planctomycetes、Gemmatimonadetes、Armatimonadetes和Chloroflexi与革兰阴性菌PLFA丰度呈正相关。在草原土壤中暴露24周后，矿化圈中的土壤微生物丰度仅为土壤中种群密度的3.1%。总之，细菌和真菌都缓慢地在新的表面（如原始矿物）定居，但很快就吸收了人工根系分泌物，在矿化圈中创造了一个活跃的微生物群落。
To improve our understanding of early microbial colonization of pristine minerals and their group-specific C utilization, we exposed minerals (illite/goethite/quartz) amended with artificial root exudates (ARE, glucose, and citric acid) in grassland soils for a period of 24 weeks. FTIR spectra indicated that mineral-associated ARE were used within the first 2 weeks of exposure and were replaced by other carbohydrates derived from living or dead cells as well as soil-borne C sources transported into the mineralosphere after heavy rain events. Fungi and Gram-positive bacteria incorporated ARE-derived C more rapidly than Gram-negative bacteria. Gram-negative bacteria presumably profited indirectly from the ARE by cross-feeding on mineral-associated necromass of fungi and Gram-positive bacteria. The Gram-negative bacterial phylaVerrucomicrobia,Planctomycetes,Gemmatimonadetes,Armatimonadetes, andChloroflexishowed a positive correlation with Gram-negative PLFA abundances. After 24 weeks of exposure in the grassland soils, abundances of soil microorganisms in the mineralosphere reached only 3.1% of the population density in soil. In conclusion, both bacteria and fungi slowly colonize new surfaces such as pristine minerals, but quickly assimilate artificial root exudates, creating an active microbial community in the mineralosphere.
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在农业土壤的碎屑中，细菌，真菌和生物之间的资源分配。
影响因子：
5.2
作者：
Kramer S;Dibbern D;Moll J;Huenninghaus M;Koller R;Krueger D;Marhan S;Urich T;Wubet T;Bonkowski M;Buscot F;Lueders T;Kandeler E
通讯作者：
Kandeler E
影响因子：
9.7
作者：
Maike Hünninghaus;D. Dibbern;S. Kramer;Robert Koller;J. Pausch;Brigitte Schloter‐Hai;T. Urich;E. Kandeler;M. Bonkowski;T. Lueders
通讯作者：
T. Lueders
影响因子：
9.7
作者：
Kandeler, Ellen;Gebala, Aurelia;Marhan, Sven
通讯作者：
Marhan, Sven
影响因子：
9.7
作者：
Seaton, Fiona M.;George, Paul B. L.;Robinson, David A.
通讯作者：
Robinson, David A.
影响因子：
9.7
作者：
Kramer, Susanne;Marhan, Sven;Kandeler, Ellen
通讯作者：
Kandeler, Ellen