Associations between shoot-level water relations and photosynthetic responses to water and light in 12 moss species
文献类型：期刊论文
| 作者 | Wang, Zhe1,2,3; Bader, Maaike Y.3 |
| 刊名 | AOB PLANTS
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 10期号:3页码:ply034 |
| 关键词 | Bryophytes gas exchange poikilohydric Polytrichaceae Sphagnum trade-offs water and carbon economics |
| ISSN号 | 2041-2851 |
| DOI | 10.1093/aobpla/ply034 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | In vascular plants, there is a clear coupling between traits related to water and traits related to carbon economics. For bryophytes this coupling has been little studied but is expected to be strong, because in these poikilohydric plants photosynthesis varies strongly with water availability. We hypothesized that there is a trade-off between water-holding and photosynthetic capacities for mosses, resulting in a limited spectrum of possible trait combinations. At one end of this spectrum, mosses would tend to stay wet and active for long periods but would have slow photosynthetic rates. At the other end, mosses would avoid external water and dry out quicker but would have high photosynthetic capacities. We determined the water relations (water-holding and -retention capacities), photosynthetic water- and light-response curves of shoots of 12 moss species and explored the associations between these traits and their distributions among the studied species. The results partly support our hypotheses, in that the water-holding and water-retention capacities of mosses are positively related to each other and to the value and width of the optimal water-content range for photosynthesis. However, the photosynthetic capacities were specific to taxonomic groups, and the relationships between the water relations and the photosynthetic capacity are weak or inconsistent and depend strongly on the species used for analysis. The positive relationships between water-holding, water-retention and photosynthetic water-use capacities suggest two contrasting adaptations to avoid damage during dehydration: taking more time to 'prepare' or quick photosynthetic adjustment. However, the spectrum we hypothesized cannot be generalized for all mosses and defining a broader spectrum will require the extension of this study to a much larger number of species and including stand-level measurements of water loss and photosynthesis. |
| 学科主题 | Plant Sciences |
| URL标识 | 查看原文 |
| WOS关键词 | 2 SPHAGNUM MOSSES ; DESICCATION-TOLERANCE ; NET PHOTOSYNTHESIS ; CONTENT COMPONENTS ; CO2 CONCENTRATION ; CUSHION SIZE ; BRYOPHYTES ; CANOPY ; GROWTH ; FOREST |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000438781900011 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://210.75.237.14/handle/351003/30235]  |
| 专题 | 生物多样性与生态系统服务领域_生态研究 生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室 生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室 |
| 作者单位 | 1.Shanghai Normal Univ, Coll Life & Environm Sci, Shanghai 200234, Peoples R China; 2.CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; 3.Univ Marburg, Fac Geog, Ecol Plant Geog, D-35032 Marburg, Germany |
| 推荐引用方式 GB/T 7714 | Wang, Zhe,Bader, Maaike Y.. Associations between shoot-level water relations and photosynthetic responses to water and light in 12 moss species[J]. AOB PLANTS,2018,10(3):ply034. |
| APA | Wang, Zhe,&Bader, Maaike Y..(2018).Associations between shoot-level water relations and photosynthetic responses to water and light in 12 moss species.AOB PLANTS,10(3),ply034. |
| MLA | Wang, Zhe,et al."Associations between shoot-level water relations and photosynthetic responses to water and light in 12 moss species".AOB PLANTS 10.3(2018):ply034. |
入库方式： OAI收割
来源：成都生物研究所
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