Significance of mesophyll conductance for photosynthetic capacity and water-use efficiency in response to alkaline stress in Populus cathayana seedlings
文献类型：期刊论文
| 作者 | Xu, G ; Huang, TF ; Zhang, XL ; Duan, BL |
| 刊名 | PHOTOSYNTHETICA
 |
| 出版日期 | 2013 |
| 卷号 | 51期号:3页码:438-444 |
| 关键词 | carbon isotope discrimination chloroplast CO2 concentration curve-fitting method gas exchange intercellular CO2 concentration leaf nitrogen specific leaf area stomatal conductance |
| ISSN号 | 0300-3604 |
| 产权排序 | 1 |
| 通讯作者 | Duan, BL |
| 中文摘要 | Cuttings of Populus cathayana were exposed to three different alkaline regimes (0, 75, and 150 mM Na2CO3) in a semicontrolled environment. The net photosynthesis rate (P (N)), mesophyll conductance (g (m)), the relative limitations posed by stomatal conductance (L (s)) and by mesophyll conductance (L (m)), photosynthetic nitrogen-use efficiency (PNUE), carbon isotope composition (delta C-13), as well as specific leaf area (SLA) were measured. P (N) decreased due to alkaline stress by an average of 25% and g (m) decreased by an average of 57%. Alkaline stress caused an increase of L (m) but not L (s), with average L (s) of 26%, and L (m) average of 38% under stress conditions. Our results suggested reduced assimilation rate under alkaline stress through decreased mesophyll conductance in P. cathayana. Moreover, alkaline stress increased significantly delta C-13 and it drew down CO2 concentration from the substomatal cavities to the sites of carboxylation (C (i)-C (c)), but decreased PNUE. Furthermore, a relationship was found between PNUE and C (i)-C (c). Meanwhile, no correlation was found between delta C-13 and C (i)/C (a), but a strong correlation was proved between delta C-13 and C (c)/C (a), indicating that mesophyll conductance was also influencing the C-13/C-12 ratio of leaf under alkaline stress. |
| 学科主题 | Plant Sciences |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000321849900014 |
| 公开日期 | 2014-11-21 |
| 源URL | [http://210.75.237.14/handle/351003/24269]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Xu, G,Huang, TF,Zhang, XL,et al. Significance of mesophyll conductance for photosynthetic capacity and water-use efficiency in response to alkaline stress in Populus cathayana seedlings[J]. PHOTOSYNTHETICA,2013,51(3):438-444. |
| APA | Xu, G,Huang, TF,Zhang, XL,&Duan, BL.(2013).Significance of mesophyll conductance for photosynthetic capacity and water-use efficiency in response to alkaline stress in Populus cathayana seedlings.PHOTOSYNTHETICA,51(3),438-444. |
| MLA | Xu, G,et al."Significance of mesophyll conductance for photosynthetic capacity and water-use efficiency in response to alkaline stress in Populus cathayana seedlings".PHOTOSYNTHETICA 51.3(2013):438-444. |
入库方式： OAI收割
来源：成都生物研究所
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