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High nitrogen enrichment buffers plant photosynthesis against herbivory damage

文献类型：期刊论文

作者Zhang, Yongqiang3,4,5; Tian, Dashuan1; Li, Pengyu1,2; Li, Jiawen5; Li, Tingting1; Niu, Shuli1; Dong, Tingfa3,4
刊名FUNCTIONAL ECOLOGY
出版日期2025-11-19
卷号N/A
关键词alpine meadow chemical defence insect herbivory nitrogen gradient photosynthetic rate resource allocation Tibetan Plateau
ISSN号0269-8463
DOI10.1111/1365-2435.70229
产权排序4
文献子类Article ; Early Access
英文摘要Herbivorous insects and nitrogen deposition are key drivers of ecosystem productivity under global change. However, their combined effects on plant photosynthesis, particularly during insect outbreaks, remain poorly understood in natural ecosystems. We conducted a decade-long, multi-level nitrogen-addition experiment in an alpine meadow on the Qinghai-Tibet Plateau, with insect-herbivory outbreak treatments nested within each nitrogen level. Our results showed that insect outbreaks consistently suppressed leaf photosynthesis in dominant species, but this effect was strongly modulated by nitrogen level. Under low nitrogen supply (2-8 g N m-2 year-1), herbivory significantly reduced net photosynthetic rates by 45.4%-60.6%, whereas this reduction was roughly halved at higher nitrogen levels. Across the nitrogen gradient, the decline in photosynthesis scaled linearly with increasing nitrogen availability, suggesting a nitrogen-dependent reduction of herbivore impact. This pattern likely resulted from a trade-off of nitrogen resource allocation between reduced investment in alkaloid synthesis and increased photosynthesis in facing insect herbivory and nitrogen enrichment, reflecting a shift from resistance-based to tolerance-based defence strategies. Overall, these findings reveal the non-linear nature of the insect herbivory effect in natural ecosystems when experiencing variable nitrogen levels, providing new insights into understanding and predicting grassland productivity responses to the interactions of nitrogen enrichment and insect outbreaks.Read the free for this article on the Journal blog. (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(2-8 g N m-2 year-1)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)45.4%-60.6%,(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic):(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).
URL标识查看原文
WOS关键词INSECT HERBIVORY ; PRIMARY METABOLISM ; ECOSYSTEM ; DEFENSE ; ALLOCATION ; DEPOSITION ; COMMUNITY ; GROWTH ; L.
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001617410800001
出版者WILEY
源URL[http://ir.igsnrr.ac.cn/handle/311030/217726]  
专题生态系统网络观测与模拟院重点实验室_外文论文
通讯作者Tian, Dashuan; Dong, Tingfa
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China;
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Yunnan Univ, Sch Ecol & Environm Sci,Minist Educ, Inst Biodivers,Key Lab Transboundary Ecosecur Sout, State Key Lab Vegetat Struct Funct & Construct Ve, Kunming, Peoples R China;
4.Yunnan Univ, Inst Biodivers, Sch Ecol & Environm Sci, Yunnan Key Lab Biol Adaptat Conservat & Utilizat, Kunming, Peoples R China;
5.China West Normal Univ, Sch Life Sci, Minist Educ, Key Lab Southwest China Wildlife Resources Conserv, Nanchong, Sichuan, Peoples R China;
推荐引用方式
GB/T 7714		 Zhang, Yongqiang,Tian, Dashuan,Li, Pengyu,et al. High nitrogen enrichment buffers plant photosynthesis against herbivory damage[J]. FUNCTIONAL ECOLOGY,2025,N/A.
APA Zhang, Yongqiang.,Tian, Dashuan.,Li, Pengyu.,Li, Jiawen.,Li, Tingting.,...&Dong, Tingfa.(2025).High nitrogen enrichment buffers plant photosynthesis against herbivory damage.FUNCTIONAL ECOLOGY,N/A.
MLA Zhang, Yongqiang,et al."High nitrogen enrichment buffers plant photosynthesis against herbivory damage".FUNCTIONAL ECOLOGY N/A(2025).

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