气候变化领域集成服务门户(CCPortal): Responses of vascular plant fine roots and associated microbial communities to whole-ecosystem warming and elevated CO2 in northern peatlands

CCPortal

DOI	10.1111/nph.19690
	Responses of vascular plant fine roots and associated microbial communities to whole-ecosystem warming and elevated CO2 in northern peatlands
	Duchesneau, Katherine; Defrenne, Camille E.; Petro, Caitlin; Malhotra, Avni; Moore, Jessica A. M.; Childs, Joanne; Hanson, Paul J.; Iversen, Colleen M.; Kostka, Joel E.
发表日期	2024
ISSN	0028-646X
EISSN	1469-8137
起始页码	242
结束页码	3
卷号	242 期号:3
英文摘要	center dot Warming and elevated CO2 (eCO(2)) are expected to facilitate vascular plant encroachment in peatlands. The rhizosphere, where microbial activity is fueled by root turnover and exudates, plays a crucial role in biogeochemical cycling, and will likely at least partially dictate the response of the belowground carbon cycle to climate changes. center dot We leveraged the Spruce and Peatland Responses Under Changing Environments (SPRUCE) experiment, to explore the effects of a whole -ecosystem warming gradient (+0 degrees C to 9 degrees C) and eCO(2) on vascular plant fine roots and their associated microbes. We combined trait -based approaches with the profiling of fungal and prokaryote communities in plant roots and rhizospheres, through amplicon sequencing. center dot Warming promoted self-reliance for resource uptake in trees and shrubs, while saprophytic fungi and putative chemoorganoheterotrophic bacteria utilizing plant -derived carbon substrates were favored in the root zone. Conversely, eCO(2) promoted associations between trees and ectomycorrhizal fungi. Trees mostly associated with short -distance exploration -type fungi that preferentially use labile soil N. Additionally, eCO(2) decreased the relative abundance of saprotrophs in tree roots. center dot Our results indicate that plant fine -root trait variation is a crucial mechanism through which vascular plants in peatlands respond to climate change via their influence on microbial communities that regulate biogeochemical cycles.
英文关键词	associations between fungi and plant hosts; atmospheric CO2 enrichment; belowground plant traits; boreal peatlands; fungal and bacterial communities; terrestrial nutrient cycle; warming
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001188795800001
来源期刊	NEW PHYTOLOGIST
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/289648
作者单位	University System of Georgia; Georgia Institute of Technology; University System of Georgia; Georgia Institute of Technology; Michigan Technological University; United States Department of Energy (DOE); Pacific Northwest National Laboratory; United States Department of Energy (DOE); Oak Ridge National Laboratory; United States Department of Energy (DOE); Oak Ridge National Laboratory; United States Department of Energy (DOE); Oak Ridge National Laboratory; University System of Georgia; Georgia Institute of Technology
推荐引用方式 GB/T 7714	Duchesneau, Katherine,Defrenne, Camille E.,Petro, Caitlin,et al. Responses of vascular plant fine roots and associated microbial communities to whole-ecosystem warming and elevated CO2 in northern peatlands[J],2024,242(3).
APA	Duchesneau, Katherine.,Defrenne, Camille E..,Petro, Caitlin.,Malhotra, Avni.,Moore, Jessica A. M..,...&Kostka, Joel E..(2024).Responses of vascular plant fine roots and associated microbial communities to whole-ecosystem warming and elevated CO2 in northern peatlands.NEW PHYTOLOGIST,242(3).
MLA	Duchesneau, Katherine,et al."Responses of vascular plant fine roots and associated microbial communities to whole-ecosystem warming and elevated CO2 in northern peatlands".NEW PHYTOLOGIST 242.3(2024).