干旱区生态环境知识资源中心(Arid): Ethylene-regulated leaf lifespan explains divergent responses of plant productivity to warming among three hydrologically different growing seasons

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DOI	10.1111/gcb.15718
	Ethylene-regulated leaf lifespan explains divergent responses of plant productivity to warming among three hydrologically different growing seasons
	Ren, Haiyan; Han, Guodong; Li, Mai-He; Gao, Cuiping; Jiang, Lin
通讯作者	Han, GD (corresponding author), Inner Mongolia Agr Univ, Inner Mongolia Key Lab Grassland Management & Uti, Key Lab Forage Cultivat Proc & High Efficient Uti, Coll Grassland Resources & Environm,Key Lab Grass, Hohhot 010011, Peoples R China. ; Jiang, L (corresponding author), Georgia Inst Technol, Sch Biol Sci, Atlanta, GA 30332 USA.
来源期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
EISSN	1365-2486
出版年	2021
英文摘要	Leaf senescence is known to be regulated by the plant hormone ethylene, but how leaf lifespan responds to global environmental change and links to ecosystem-level responses remains largely unexplored. Here we investigated the effects of climate warming and nitrogen addition on plant functional traits, plant hormone ethylene and net primary production in a 13-year field experiment in a desert steppe. Across the last 3 years of the experiment (2016-2018), plant productivity increased under warming only in 2016, when there was above normal precipitation, but consistently increased with nitrogen addition. Warming enhanced net photosynthesis, leaf nitrogen and ethylene production and reduced leaf lifespan in 2016 (a wet year), but not in 2017 (a drought year); the effect of warming in 2018 (a year with normal precipitation) was opposite to 2016, likely due to the below-normal precipitation in the mid-growing season in 2018. Nitrogen addition led to increases in leaf nitrogen, ethylene production and net photosynthesis, and declines in leaf lifespan in 2016 and 2018, but not in 2017. The ethylene-regulated lifespan was further evidenced by the addition of CoCl2 (an ethylene biosynthesis inhibitor) that reduced ethylene production and prolonged lifespan. Structural equation modeling showed that leaf lifespan had a negative effect on plant productivity, both directly and indirectly via its negative effect on net photosynthesis, across all 3 years. Our results demonstrate the divergent responses of leaf lifespan and, in turn, plant productivity to warming under inter-annual and intra-annual precipitation variation, thus linking plant hormone production, functional traits and ecosystem functioning in the face of global environmental change.
英文关键词	climate warming leaf longevity nitrogen deposition photosynthetic rate plant biomass plant hormone precipitation change
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000660945300001
WOS关键词	NITROGEN-ADDITION ; ELEVATED CO2 ; GRASSLAND ; TEMPERATE ; CARBON ; MINERALIZATION ; SENESCENCE ; BIODIVERSITY ; DEPOSITION ; LONGEVITY
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352218
作者单位	[Ren, Haiyan; Han, Guodong; Gao, Cuiping] Inner Mongolia Agr Univ, Inner Mongolia Key Lab Grassland Management & Uti, Key Lab Forage Cultivat Proc & High Efficient Uti, Coll Grassland Resources & Environm,Key Lab Grass, Hohhot 010011, Peoples R China; [Ren, Haiyan; Jiang, Lin] Georgia Inst Technol, Sch Biol Sci, Atlanta, GA 30332 USA; [Li, Mai-He] Swiss Fed Res Inst WSL, Forest Dynam, Birmensdorf, Switzerland; [Li, Mai-He] Northeast Normal Univ, Sch Geog Sci, Minist Educ, Key Lab Geog Proc & Ecol Secur Changbai Mt, Changchun, Peoples R China
推荐引用方式 GB/T 7714	Ren, Haiyan,Han, Guodong,Li, Mai-He,et al. Ethylene-regulated leaf lifespan explains divergent responses of plant productivity to warming among three hydrologically different growing seasons[J],2021.
APA	Ren, Haiyan,Han, Guodong,Li, Mai-He,Gao, Cuiping,&Jiang, Lin.(2021).Ethylene-regulated leaf lifespan explains divergent responses of plant productivity to warming among three hydrologically different growing seasons.GLOBAL CHANGE BIOLOGY.
MLA	Ren, Haiyan,et al."Ethylene-regulated leaf lifespan explains divergent responses of plant productivity to warming among three hydrologically different growing seasons".GLOBAL CHANGE BIOLOGY (2021).