Extending the generality of leaf economic design principles in the cycads, an ancient lineage
文献类型：期刊论文
| 作者 | Zhang, YJ ; Cao, KF ; Sack, L ; Li, N ; Wei, XM ; Goldstein, G |
| 刊名 | NEW PHYTOLOGIST
 |
| 出版日期 | 2015 |
| 卷号 | 206期号:2页码:817-829 |
| 关键词 | Cycadales Cycas functional convergence gymnosperms leaf economic spectrum leaf hydraulic conductance photosynthetic capacity trade-off |
| ISSN号 | 0028-646X |
| 中文摘要 | Cycads are the most ancient lineage of living seed plants, but the design of their leaves has received little study. We tested whether cycad leaves are governed by the same fundamental design principles previously established for ferns, conifers and angiosperms, and characterized the uniqueness of this relict lineage in foliar trait relationships. Leaf structure, photosynthesis, hydraulics and nutrient composition were studied in 33 cycad species from nine genera and three families growing in two botanical gardens. Cycads varied greatly in leaf structure and physiology. Similarly to other lineages, light-saturated photosynthetic rate per mass (A(m)) was related negatively to leaf mass per area and positively to foliar concentrations of chlorophyll, nitrogen (N), phosphorus and iron, but unlike angiosperms, leaf photosynthetic rate was not associated with leaf hydraulic conductance. Cycads had lower photosynthetic N use efficiency and higher photosynthetic performance relative to hydraulic capacity compared with other lineages. These findings extend the relationships shown for foliar traits in angiosperms to the cycads. This functional convergence supports the modern synthetic understanding of leaf design, with common constraints operating across lineages, even as they highlight exceptional aspects of the biology of this key relict lineage. |
| 原文出处 | 10.1111/nph.13274 |
| 语种 | 英语 |
| 公开日期 | 2015-04-28 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/8674]  |
| 专题 | 西双版纳热带植物园_植物生理生态研究组 |
| 推荐引用方式 GB/T 7714 | Zhang, YJ,Cao, KF,Sack, L,et al. Extending the generality of leaf economic design principles in the cycads, an ancient lineage[J]. NEW PHYTOLOGIST,2015,206(2):817-829. |
| APA | Zhang, YJ,Cao, KF,Sack, L,Li, N,Wei, XM,&Goldstein, G.(2015).Extending the generality of leaf economic design principles in the cycads, an ancient lineage.NEW PHYTOLOGIST,206(2),817-829. |
| MLA | Zhang, YJ,et al."Extending the generality of leaf economic design principles in the cycads, an ancient lineage".NEW PHYTOLOGIST 206.2(2015):817-829. |
入库方式： OAI收割
来源：西双版纳热带植物园
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