Root Secondary Metabolites in Populus tremuloides: Effects of Simulated Climate Warming, Defoliation, and Genotype
文献类型：期刊论文
| 作者 | Li, Zhengzhen; Rubert-Nason, Kennedy F.; Jamieson, Mary A.; Raffa, Kenneth F.; Lindroth, Richard L. |
| 刊名 | JOURNAL OF CHEMICAL ECOLOGY
 |
| 出版日期 | 2021-03 |
| 卷号 | 47期号:3页码:313-321 |
| 关键词 | Aspen Biomass Elevated temperature Defoliation Genetic variation Roots Salicinoids Tannins |
| ISSN号 | 0098-0331 |
| 英文摘要 | Climate warming can influence interactions between plants and associated organisms by altering levels of plant secondary metabolites. In contrast to studies of elevated temperature on aboveground phytochemistry, the consequences of warming on root chemistry have received little attention. Herein, we investigated the effects of elevated temperature, defoliation, and genotype on root biomass and phenolic compounds in trembling aspen (Populus tremuloides). We grew saplings of three aspen genotypes under ambient or elevated temperatures (+4-6 degrees C), and defoliated (by 75%) half of the trees in each treatment. After 4 months, we harvested roots and determined their condensed tannin and salicinoid (phenolic glycoside) concentrations. Defoliation reduced root biomass, with a slightly larger impact under elevated, relative to ambient, temperature. Elevated temperature decreased condensed tannin concentrations by 21-43% across the various treatment combinations. Warming alone did not alter salicinoid concentrations but eliminated a small negative impact of defoliation on those compounds. Graphical vector analysis suggests that effects of warming and defoliation on condensed tannins and salicinoids were predominantly due to reduced biosynthesis of these metabolites in roots, rather than to changes in root biomass. In general, genotypes did not differ in their responses to temperature or temperature by defoliation interactions. Collectively, our results suggest that future climate warming will alter root phytochemistry, and that effects will vary among different classes of secondary metabolites and be influenced by concurrent ecological interactions such as herbivory. Temperature- and herbivory-mediated changes in root chemistry have the potential to influence belowground trophic interactions and soil nutrient dynamics. |
| WOS研究方向 | Biochemistry & Molecular Biology ; Ecology |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45556]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Minzu Univ China, Coll Life & Environm Sci, Beijing 100081, Peoples R China 2.Oakland Univ, Dept Biol Sci, Rochester, MI 48309 USA 3.Univ Maine, Div Nat Sci, Ft Kent, ME 04743 USA 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 5.Univ Wisconsin, Dept Entomol, Madison, WI 53706 USA |
| 推荐引用方式 GB/T 7714 | Li, Zhengzhen,Rubert-Nason, Kennedy F.,Jamieson, Mary A.,et al. Root Secondary Metabolites in Populus tremuloides: Effects of Simulated Climate Warming, Defoliation, and Genotype[J]. JOURNAL OF CHEMICAL ECOLOGY,2021,47(3):313-321. |
| APA | Li, Zhengzhen,Rubert-Nason, Kennedy F.,Jamieson, Mary A.,Raffa, Kenneth F.,&Lindroth, Richard L..(2021).Root Secondary Metabolites in Populus tremuloides: Effects of Simulated Climate Warming, Defoliation, and Genotype.JOURNAL OF CHEMICAL ECOLOGY,47(3),313-321. |
| MLA | Li, Zhengzhen,et al."Root Secondary Metabolites in Populus tremuloides: Effects of Simulated Climate Warming, Defoliation, and Genotype".JOURNAL OF CHEMICAL ECOLOGY 47.3(2021):313-321. |
入库方式： OAI收割
来源：生态环境研究中心
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