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Drought mediates Sphagnum defense response to herbivory

文献类型：期刊论文

作者Chen, Yong-Da1,3,4,5; Bu, Zhao-Jun1,3,4; Wang, Meng1,3,4; Zhang, Ming-Ming1,3,4; Ma, Jin-Ze5; Guo, Hong-Bo2,4
刊名AMERICAN JOURNAL OF BOTANY
出版日期2024-10-21
卷号N/A页码:10
关键词combined stresses growth-defense trade-off peat moss phenolics soluble sugars Sphagnaceae climate warming
ISSN号0002-9122
DOI10.1002/ajb2.16427
产权排序5
英文摘要Premise: The expected concomitant increase in multiple stressors such as herbivory and drought may threaten peatland ecosystems. How Sphagnum, the ecological engineers of peatlands, responds to combined stressors remains largely unexplored. Here we aimed to clarify resource allocations in Sphagnum during concomitant herbivory and drought. Methods: S. magellanicum and S. fuscum were exposed to drought and herbivory together or separately in laboratory experiments and analyzed for growth (biomass production and net photosynthetic rate), defense (phenolics in leachates and phenolics in extraction) and nonstructural carbohydrates (soluble sugar and starch) in relation to untreated controls. Results: Herbivory and drought had significant interactive effects on Sphagnum growth and defense. In both species, drought without herbivory reduced the phenolics in leachate, but with herbivory increased phenolics, indicating a synergistic effect between herbivory and drought on Sphagnum defense. Both stressors significantly decreased biomass production, with the combined stress having a more negative effect. Interestingly, a growth-defense trade-off was found in the drought treatment of both Sphagnum species, but disappeared in the wet treatment. Conversely, a trade-off between soluble sugars and phenolics was found in the wet but not in the drought treatment, suggesting that soluble sugars may play a role in inducing the defense and hence mask the growth-defense trade-off in peat mosses. Conclusions: Our results emphasize that predicting the impact of combined stressors on peat moss traits is complex and challenging. Future models should account for the effects of multiple environmental stressors to guide peatland conservation under climate warming.
WOS关键词RESOURCE AVAILABILITY ; CHEMICAL DEFENSES ; LEAF HERBIVORY ; STRESS ; GROWTH ; RESISTANCE ; PLANTS ; ALLOCATION ; CHEMISTRY ; PATTERNS
资助项目National Nature Science Foundation of China[U23A2003] ; National Nature Science Foundation of China[42371050] ; National Nature Science Foundation of China[41471043] ; Jilin Provincial Science and Technology Development Project[20210402032GH] ; Jilin Provincial Science and Technology Development Project[20230203002SF] ; Gannan Normal University Research Base Project[BSJJ202413] ; Open Project Fund for Discipline Construction of the School of Geography and Environmental Engineering (Gannan Normal University)
WOS研究方向Plant Sciences
语种英语
WOS记录号WOS:001339448100001
出版者WILEY
资助机构National Nature Science Foundation of China ; Jilin Provincial Science and Technology Development Project ; Gannan Normal University Research Base Project ; Open Project Fund for Discipline Construction of the School of Geography and Environmental Engineering (Gannan Normal University)
源URL[http://ir.igsnrr.ac.cn/handle/311030/209806]  
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Bu, Zhao-Jun
作者单位1.Northeast Normal Univ, Inst Peat & Mire Res, State Environm Protect Key Lab Wetland Ecol & Vege, Changchun 130024, Peoples R China
2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
3.Jilin Prov Key Lab Wetland Ecol Proc & Environm Ch, Changchun 130024, Peoples R China
4.Northeast Normal Univ, Sch Geog Sci, Key Lab Geog Proc & Ecol Secur Changbai Mt, Minist Educ, Changchun 130024, Peoples R China
5.Gannan Normal Univ, Sch Geog & Environm Engn, Ganzhou 341000, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Yong-Da,Bu, Zhao-Jun,Wang, Meng,et al. Drought mediates Sphagnum defense response to herbivory[J]. AMERICAN JOURNAL OF BOTANY,2024,N/A:10.
APA Chen, Yong-Da,Bu, Zhao-Jun,Wang, Meng,Zhang, Ming-Ming,Ma, Jin-Ze,&Guo, Hong-Bo.(2024).Drought mediates Sphagnum defense response to herbivory.AMERICAN JOURNAL OF BOTANY,N/A,10.
MLA Chen, Yong-Da,et al."Drought mediates Sphagnum defense response to herbivory".AMERICAN JOURNAL OF BOTANY N/A(2024):10.

入库方式： OAI收割

来源：地理科学与资源研究所

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