文献类型：期刊文献

英文题名：Microbial phosphorus recycling in soil by intra- and extracellular mechanisms

作者：Chen, Jie[1,2,3,4] Xu, Han[1] Seven, Jasmin[3] Zilla, Thomas[3] Dippold, Michaela A.[2,5] Kuzyakov, Yakov[3,4,6]

第一作者：陈洁;Chen, Jie

通信作者：Chen, J[1];Chen, J[2];Chen, J[3];Chen, J[4]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China;[2]Univ Gottingen, Dept Crop Sci, Biogeochem Agroecosystems, D-37077 Gottingen, Germany;[3]Univ Gottingen, Soil Sci Temperate Ecosyst, D-37077 Gottingen, Germany;[4]Univ Gottingen, Dept Crop Sci, Agr Soil Sci, D-37077 Gottingen, Germany;[5]Univ Tubingen, Dept Geosci, Geobiosphere Interact, D-72076 Tubingen, Germany;[6]Peoples Friendship Univ Russia, RUDN Univ, Moscow 117198, Russia

年份：2024

卷号：3

期号：1

外文期刊名：ISME COMMUNICATIONS

收录：WOS:【ESCI(收录号:WOS:001153836300001)】；

语种：英文

摘要：Rising global stoichiometric imbalance between increasing nitrogen (N) availability and depleting phosphorus (P) resources increases the importance of soil microbial P recycling. The contribution of extra- versus intracellular P (re-)cycling depending on ecosystem nutrient status is vastly unclear, making soil microorganisms a blind spot in our understanding of ecosystem responses to increasing P deficiency. We quantified P incorporation into microbial DNA and phospholipids by P-33 labeling under contrasting conditions: low/high P soil x low/high carbon (C)NP application. By combining P-33 and C-14 labeling with tracing of microbial community biomarkers and functional genes, we disengaged the role of DNA and phospholipids in soil P cycling. Microorganisms in low P soil preferentially allocated P to phospholipids with an acceleration of phospholipids metabolism driven by C addition, which was strongly related to high abundances of microbial community members (e.g. some G-) with a fast phospholipids turnover. In high P soil, however, more P was allocated to DNA with a microbial functional shift towards DNA synthesis to support a replicative growth when sufficient C was supplied, which was coupled with a strong enrichment of fungal copiotrophs and microbial genes coding DNA primase. Consequently, adaptation to low P availability accelerated microbial intracellular P recycling through reutilization of the P stored in phospholipids. However, microorganisms under high P availability commonly adopted extracellular P recycling with release and reuse of DNA P by microbial death-growth dynamics. These results advance our understanding on microbial adaptation to P deficiency in soil by regulating component-specific P pathways and reflect the specific functions of phospholipids and DNA for P recycling.