Physiological responses of two moss species to the combined stress of water deficit and elevated N deposition (II): Carbon and nitrogen metabolism
文献类型：期刊论文
| 作者 | Liu, Bin-yang; Lei, Chun-yi; Jin, Jian-hua; Guan, Yi-yun; Li, Shan; Zhang, Yi-shun; Liu, Wei-qiu |
| 刊名 | ECOLOGY AND EVOLUTION
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:21页码:7596-7609 |
| 关键词 | carbon metabolism compensation effect drought moss nitrogen nitrogen assimilation stress |
| ISSN号 | 2045-7758 |
| DOI | 10.1002/ece3.2521 |
| 文献子类 | Article |
| 英文摘要 | Nitrogen (N) deposition levels and frequencies of extreme drought events are increasing globally. In efforts to improve understanding of plants' responses to associated stresses, we have investigated responses of mosses to drought under elevated nitrogen conditions. More specifically, we exposed Pogonatum cirratum subsp. fuscatum and Hypnum plumaeforme to various nitrate (KNO3) or ammonium (NH4Cl) treatments, with and without water deficit stress and monitored indices related to carbon (C) and N metabolism both immediately after the stress and after a short recovery period. The results show that N application stimulated both C and N assimilation activities, including ribulose-1,5-bisphosphate carboxylase, glutamine synthetase/glutamate synthase (GS/GOGAT), and glutamate dehydrogenase (GDH) activities, while water deficit inhibited C and N assimilation. The mosses could resist stress caused by excess N and water deficit by increasing their photorespiration activity and proline (Pro) contents. However, N supply increased their sensitivity to water stress, causing sharper reductions in C and N assimilation rates, and further increases in photorespiration and Pro contents, indicating more serious oxidative or osmotic stress in the mosses. In addition, there were interspecific differences in N assimilation pathways, as the GS/GOGAT and GDH pathways were the preferentially used ammonium assimilation pathways in P.cirratum and H.plumaeforme when stressed, respectively. After rehydration, both mosses exhibited overcompensation effects for most C and N assimilation activities, but when supplied with N, the activities were generally restored to previous levels (or less), indicating that N supply reduced their ability to recover from water deficit stress. In conclusion, mosses can tolerate a certain degree of water deficit stress and possess some resilience to environmental fluctuations, but elevated N deposition reduces their tolerance and ability to recover. |
| 学科主题 | Ecology ; Evolutionary Biology |
| 出版地 | HOBOKEN |
| WOS关键词 | SUCROSE-PHOSPHATE SYNTHASE ; AMINO-ACID ACCUMULATION ; RACOMITRIUM-LANUGINOSUM ; BRASSICA-JUNCEA ; DROUGHT STRESS ; PHOTOSYSTEM-II ; PROLINE ; PLANTS ; DESICCATION ; BRYOPHYTES |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000387120800004 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31070470, 31370490] ; National Ministry of Science and Technology of ChinaMinistry of Science and Technology, China [2013FY111500] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25134]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.[Liu, Bin-yang 2.Jin, Jian-hua 3.Guan, Yi-yun 4.Li, Shan 5.Zhang, Yi-shun 6.Sun Yat Sen Univ, Guangdong Key Lab Plant Resources, Sch Life Sci, Guangzhou, Guangdong, Peoples R China 7.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing, Peoples R China 8.Heishiding Nat Reserve Guangdong Prov, Zhaoqing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Bin-yang,Lei, Chun-yi,Jin, Jian-hua,et al. Physiological responses of two moss species to the combined stress of water deficit and elevated N deposition (II): Carbon and nitrogen metabolism[J]. ECOLOGY AND EVOLUTION,2016,6(21):7596-7609. |
| APA | Liu, Bin-yang.,Lei, Chun-yi.,Jin, Jian-hua.,Guan, Yi-yun.,Li, Shan.,...&Liu, Wei-qiu.(2016).Physiological responses of two moss species to the combined stress of water deficit and elevated N deposition (II): Carbon and nitrogen metabolism.ECOLOGY AND EVOLUTION,6(21),7596-7609. |
| MLA | Liu, Bin-yang,et al."Physiological responses of two moss species to the combined stress of water deficit and elevated N deposition (II): Carbon and nitrogen metabolism".ECOLOGY AND EVOLUTION 6.21(2016):7596-7609. |
入库方式： OAI收割
来源：植物研究所
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