Contrasting patterns of leaf solute accumulation and salt adaptation in four phreatophytic desert plants in a hyperarid desert with saline groundwater
文献类型：期刊论文
| 作者 | Arndt ; SK ; Arampatsis ; C ; Foetzki ; A ; Li ; XY ; Zeng ; FJ ; Zhang ; XM |
| 刊名 | JOURNAL OF ARID ENVIRONMENTS
 |
| 出版日期 | 2004 |
| 卷号 | 59期号:2页码:259-270 |
| 关键词 | TOLERANCE MECHANISMS TRANSPORT RESPONSES DROUGHT STRESS GROWTH SAP |
| ISSN号 | 0140-1963 |
| 通讯作者 | Arndt, SK, Univ Melbourne, Forest Sci Ctr, Water St, Creswick, Vic 3363, Australia |
| 中文摘要 | The seasonal variation of leaf solutes was investigated in four perennial phreatophytes in the natural vegetation surrounding a river oasis in the Chinese Taklamakan desert in order to elucidate their adaptation to saline groundwater. Leaves of the herbaceous perennial legume Alhagi sparsifolia, the poplar tree Populus euphratica, the salt cedar Tamarix ramosissima, and the C-4 shrub Calligonum caput-medusae were collected at the end of each month during the growing season 1999 and analysed for cation, anion, organic acid, carbohydrate, glycinebetaine, and proline concentrations. The species revealed considerable differences in the foliar solute composition and their seasonal variation. Tamarix had high foliar mineral salt concentrations throughout the season but excreted the accumulated salts via salt glands. The three other species showed different degrees of ion regulation and ion selectivity. Calligonum had generally very low mineral ion concentrations, tolerated moderate Cl- concentrations and excluded Na+. Populus effectively excluded Cl- from its leaves but Na+ and total solute concentrations increased towards the end of the season which lead to K:Na ratio smaller than one in October. Alhagi showed the highest degree of ion selectivity by excluding Na+ but accumulating Ca2+ in its leaves. Mineral salt composition of xylemsap in Alhagi and Calligonian indicated that both species showed a similar degree of ion selectivity in the roots and that ion retransloction is probably another important mechanism to maintain low salt concentrations in the leaf. The cyclitols chiro-inositol and pinitol were the major compatible solutes in the plants and N-containing solutes like proline or glycinebetaine occurred only in minor concentrations or were absent, respectively. All plant species were well adapted to the moderate salinity of the NaCl dominated groundwater and no signs of salt related drought stress, ion toxicity or nutrient imbalance were observed. (C) 2003 Elsevier Ltd. All rights reserved. |
| 学科主题 | 植物生理学 |
| 收录类别 | SCI |
| 公开日期 | 2011-08-19 |
| 源URL | [http://ir.xjlas.org/handle/365004/10556]  |
| 专题 | 新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据) |
| 推荐引用方式 GB/T 7714 | Arndt,SK,Arampatsis,et al. Contrasting patterns of leaf solute accumulation and salt adaptation in four phreatophytic desert plants in a hyperarid desert with saline groundwater[J]. JOURNAL OF ARID ENVIRONMENTS,2004,59(2):259-270. |
| APA | Arndt.,SK.,Arampatsis.,C.,Foetzki.,...&XM.(2004).Contrasting patterns of leaf solute accumulation and salt adaptation in four phreatophytic desert plants in a hyperarid desert with saline groundwater.JOURNAL OF ARID ENVIRONMENTS,59(2),259-270. |
| MLA | Arndt,et al."Contrasting patterns of leaf solute accumulation and salt adaptation in four phreatophytic desert plants in a hyperarid desert with saline groundwater".JOURNAL OF ARID ENVIRONMENTS 59.2(2004):259-270. |
入库方式： OAI收割
来源：新疆生态与地理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。