Mycelia-derived C contributes more to nitrogen cycling than root-derived C in ectomycorrhizal alpine forests

doi:10.1111/1365-2435.13236

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 生物多样性与生态系统服务领域 > 中国科学院山地生态恢复与生物资源利用重点实验室

	Mycelia-derived C contributes more to nitrogen cycling than root-derived C in ectomycorrhizal alpine forests
	Zhang, Ziliang 1,2,3; Phillips, Richard P.; Zhao, Wenqiang 1; Yuan, Yuanshuang 1,2; Liu, Qing 1; Yin, Huajun 1
刊名	FUNCTIONAL ECOLOGY
	2019
卷号	33 期号:2 页码:346-359
关键词	below-ground carbon inputs ectomycorrhizal fungi extramatrical mycelia fine roots nitrogen cycling
ISSN号	0269-8463
DOI	10.1111/1365-2435.13236
产权排序	1
文献子类	Article
英文摘要	Plant roots and their associated microbial symbionts impact carbon (C) and nutrient cycling in ecosystems, but estimates of the relative contributions of root- versus microbe-derived dynamic inputs are highly uncertain. Roots release C into soil via exudation and turnover (i.e., root-derived C), but also by allocating C to mycorrhizal fungal mycelia, which exude C and undergo turnover (i.e., mycelia-derived C). Given that the relative contributions of root- and mycelia-derived C inputs are unknown, a key knowledge gap lies in understanding not only the relative contributions of root- versus mycelia-derived C inputs, but also the consequences of these fluxes on nutrient cycling. Using ingrowth cores and stable isotope analyses, we quantified root- and mycelia-derived C inputs into the soil and their relative contributions to nitrogen (N) cycling in two ectomycorrhizal alpine forests, a 70-year-old spruce plantation and a 200-year-old spruce-fir dominated forest, in western Sichuan, China. Across the two forests, extramatrical mycelia of ectomycorrhizal fungi accounted for up to two-thirds of the new root C inputs into soil and similar to 80% of the stimulated N mineralization. Moreover, flux-specific (per gram) mycelia-derived C inputs stimulated multiple indices of soil N cycling to a greater degree than the flux-specific root-derived C inputs, accounting for similar to 70% of the stimulated N mineralization in both forests. Collectively, our findings indicate that the effects of mycorrhizal fungi on soil C and N cycling may exceed those of roots in alpine coniferous forests dominated by ectomycorrhizal fungi, highlighting the need to incorporate mycorrhizal fungal inputs into biogeochemical models for ecosystems.
学科主题	Environment/ecology
URL标识	查看原文
WOS关键词	SOIL ORGANIC-MATTER ; MYCORRHIZAL FUNGI ; ELEVATED CO2 ; MICROBIAL COMMUNITIES ; CARBON SEQUESTRATION ; PINUS-SYLVESTRIS ; BIOMASS ; TURNOVER ; RHIZOSPHERE ; EXUDATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	WILEY
WOS记录号	WOS:000458830500013
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/31003]
专题	生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
作者单位	1.Chinese Acad Sci, Chengdu Inst Biol, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, Ecol Restorat & Biodivers Conservat Key Lab Sichu, Chengdu, Sichuan, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.Clemson Univ, Dept Plant & Environm Sci, Clemson, SC USA; [Phillips, Richard P.] Indiana Univ, Dept Biol, Bloomington, IN USA
推荐引用方式 GB/T 7714	Zhang, Ziliang,Phillips, Richard P.,Zhao, Wenqiang,et al. Mycelia-derived C contributes more to nitrogen cycling than root-derived C in ectomycorrhizal alpine forests[J]. FUNCTIONAL ECOLOGY,2019,33(2):346-359.
APA	Zhang, Ziliang,Phillips, Richard P.,Zhao, Wenqiang,Yuan, Yuanshuang,Liu, Qing,&Yin, Huajun.(2019).Mycelia-derived C contributes more to nitrogen cycling than root-derived C in ectomycorrhizal alpine forests.FUNCTIONAL ECOLOGY,33(2),346-359.
MLA	Zhang, Ziliang,et al."Mycelia-derived C contributes more to nitrogen cycling than root-derived C in ectomycorrhizal alpine forests".FUNCTIONAL ECOLOGY 33.2(2019):346-359.