Effects of mycorrhiza and hyphae on the response of soil microbial community to warming in eastern Tibetan Plateau

被引：13
作者：
Luo, Lin [1 ,2 ,3 ]
Guo, Min [4 ]
Wang, Entao [6 ]
Yin, Chunying [2 ]
Wang, Yanjie [4 ]
He, Heliang [2 ,3 ,5 ]
Zhao, Chunzhang [1 ]
机构：
[1] Chengdu Univ Technol, Coll Ecol & Environm, State Environm Protect Key Lab Synerget Control &, Chengdu 610059, Peoples R China
[2] Chinese Acad Sci, Chengdu Inst Biol, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliza, Key Lab Sichuan Prov, POB 416, Chengdu 610041, Peoples R China
[3] Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
[4] Sichuan Normal Univ, Coll Life Sci, Chengdu, Peoples R China
[5] Yibin Univ, Coll Agr Forestry & Food Engn, Yibin 644007, Peoples R China
[6] Escuela Nacl Ciencias Biol, Inst Politecn Nacl, Mexico City 11340, Mexico
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 2022年 / 837卷
基金：
中国国家自然科学基金;
关键词：
Experimental warming; Soil microbes; Enzyme activities; Mycorrhiza; Hyphae; EXTRACELLULAR ENZYME-ACTIVITIES; ELEVATED ATMOSPHERIC CO2; FATTY-ACID PROFILES; ROOT-DERIVED C; ECTOMYCORRHIZAL FUNGI; NITROGEN-FERTILIZATION; ARBUSCULAR MYCORRHIZAL; BACTERIAL COMMUNITY; FOREST ECOSYSTEMS; CARBON;
D O I：
10.1016/j.scitotenv.2022.155498
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The effects of mycorrhiza and its external hyphae on the response of soil microbes to global warming remain unclear. This study investigates the role of mycorrhiza and its hyphae in regulating soil microbial community under warming by examining the microbial biomass and composition in the ingrowth cores of arbuscular mycorrhiza (AM) plant, Fargesia nitida, and ectomycorrhiza (ECM) plant, Picea asperata, with/without mycorrhiza/hyphae and experimental warming. The results showed that warming significantly increased the biomass of all soil microbes (by 19.89%- 137.48%) and altered the microbial composition in both plant plots without mycorrhiza/hyphae. However, this effect was weakened in the presence of mycorrhiza or hyphae. In F. nitida plots, warming did not significantly affect biomass and composition of most soil microbial groups when mycorrhiza or hyphae were present. In P. asperata plots, warming significantly increased the total and ECM fungi (ECMF) biomass in the presence of hyphae (p < 0.05) and the total, Gn, and AM fungi (AMF) biomass in the presence of mycorrhiza (p < 0.05). Meanwhile, the response of enzyme activities to warming was also altered with mycorrhiza or hyphae. Additionally, soil microbial community composition was mainly influenced by soil available phosphorus (avaP), while enzyme activities depended on soil avaP, dissolved organic carbon (DOC), and nitrate concentrations. Our results indicate that mycorrhiza and its hyphae are essential in regulating the response of microbes to warming.
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页数：11
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