文献类型：期刊文献

英文题名：Plant Functional Traits Define Microbial Response to Nutrient Availability in Tropical Rainforest Soil

作者：Chen, Jie[1] Li, Yanpeng[1] Xu, Han[1] Zhou, Zhang[1] Chen, Dexiang[1] Ma, Xiaomin[2] Li, Yide[1] Liu, Zhanfeng[3,4] Lambers, Hans[5] Kuzyakov, Yakov[6,7]

第一作者：陈洁

通信作者：Xu, H[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou, Peoples R China;[2]Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou, Peoples R China;[3]Chinese Acad Sci, South China Bot Garden, Guangdong Prov Key Lab Appl Bot, Guangzhou, Peoples R China;[4]Chinese Acad Sci, South China Bot Garden, Key Lab Natl Forestry & Grassland Adm Plant Conser, Guangzhou, Peoples R China;[5]Univ Western Australia, Sch Biol Sci, Perth, WA, Australia;[6]Univ Goettingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, Gottingen, Germany;[7]RUDN Univ, RUDN Univ, Moscow, Russia

年份：2025

卷号：31

期号：8

外文期刊名：GLOBAL CHANGE BIOLOGY

收录：;Scopus(收录号：2-s2.0-105014097907);WOS:【SCI-EXPANDED(收录号:WOS:001556712500001)】；

基金：This work was supported by National Non-profit Institute Research Grant of Chinese Academy of Forestry (Grant CAFYBB2020QB003 and CAFYBB2017ZE001), National Natural Science Foundation of China (Grant 32371851 and 32371726), and the RUDN University Strategic Academic Leadership Program.

语种：英文

外文关键词：aboveground plant traits; plant functional strategy; plant trait-soil nutrient relations; soil microbiomes; soil N/P availability; tropical forest

摘要：High global inputs of nitrogen (N) compared with relatively low inputs of phosphorus (P) increase nutrient imbalances that may cause substantial shifts in plant functional traits and modulate resource utilization strategies, which are associated with soil microbial communities. These community-level trait-based adaptations and the responses of soil microbiomes to the projected nutrient changes remain largely unexplored. Here, we characterized the nutrient-induced shifts in plant functional traits and microbial communities in P-limited tropical rainforest soils by combining spatial multivariate analyses across 160 km2 of primary and secondary tropical rainforest with an in situ 14-year nutrient addition experiment. The links between plant traits and microbial composition depending on soil N and P contents were examined to test how vegetation regulates the responses of microbial communities to nutrient input. Elevated soil N increased P limitation and thus led to a shift in leaf traits representing a conservative economy, as indicated by increases in leaf N:P ratios and leaf dry matter content. In response to the conservative shift in plant traits, soil bacterial r-strategists, arbuscular mycorrhizal and saprotrophic fungal guilds increased in relative abundance and thus were consistently enriched with increasing N content in soil. Addition of P to soil, however, led to increases in vegetation traits for acquisition economy, characterized by increases in leaf P content, specific leaf area, and trait diversity. With the shift to traits for acquisition in high-P soils, the relative abundance of bacterial K-strategists and ectomycorrhizal fungi rasied. Thus, vegetation traits have selective effects on soil microbiomes to acquire specific functions needed for P acquisition in P deficient tropical soil, which may, in turn, accelerate nutrient cycles and impact soil carbon sequestration. Our results suggest that models need to incorporate plant traits in predicting microbial dynamics and the associated functions under changing nutrient conditions.