Molecular mechanisms of foliar water uptake in a desert tree
文献类型：期刊论文
| 作者 | Yan, Xia1,2; Zhou, Maoxian3; Dong, Xicun4; Zou, Songbing1; Xiao, Honglang1; Ma, Xiao-Fei2 |
| 刊名 | AOB PLANTS
 |
| 出版日期 | 2015 |
| 卷号 | 7页码:14 |
| 关键词 | Aquaporins drought adaptation foliar water uptake PIP2-1 Tamarix ramosissima |
| ISSN号 | 2041-2851 |
| DOI | 10.1093/aobpla/plv129 |
| 通讯作者 | Ma, Xiao-Fei(maxiaofei@lzb.ac.cn) |
| 英文摘要 | Water deficits severely affect growth, particularly for the plants in arid and semiarid regions of the world. In addition to precipitation, other subsidiary water, such as dew, fog, clouds and small rain showers, may also be absorbed by leaves in a process known as foliar water uptake. With the severe scarcity of water in desert regions, this process is increasingly becoming a necessity. Studies have reported on physical and physiological processes of foliar water uptake. However, the molecular mechanisms remain less understood. As major channels for water regulation and transport, aquaporins (AQPs) are involved in this process. However, due to the regulatory complexity and functional diversity of AQPs, their molecular mechanism for foliar water uptake remains unclear. In this study, Tamarix ramosissima, a tree species widely distributed in desert regions, was investigated for gene expression patterns of AQPs and for sap flow velocity. Our results suggest that the foliar water uptake of T. ramosissima occurs in natural fields at night when the humidity is over a threshold of 85 %. The diurnal gene expression pattern of AQPs suggests that most AQP gene expressions display a circadian rhythm, and this could affect both photosynthesis and transpiration. At night, the PIP2-1 gene is also upregulated with increased relative air humidity. This gene expression pattern may allow desert plants to regulate foliar water uptake to adapt to extreme drought. This study suggests a molecular basis of foliar water uptake in desert plants. |
| 收录类别 | SCI |
| WOS关键词 | PLASMA-MEMBRANE AQUAPORINS ; DRIMYS-BRASILIENSIS WINTERACEAE ; CALIFORNIA REDWOOD FOREST ; SEMPERVIRENS D. DON ; LOW AIR HUMIDITY ; GENE-EXPRESSION ; CLOUD FOREST ; HYDRAULIC CONDUCTIVITY ; TAMARIX-RAMOSISSIMA ; SALT-STRESS |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000369028300009 |
| 出版者 | OXFORD UNIV PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557100 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Ma, Xiao-Fei |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Inland River Ecohydrol, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Key Lab Stress Physiol & Ecol Cold & Arid Reg Gan, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 3.Lanzhou Univ Finance & Econ, Sch Agr & Forestry Econ & Management, Lanzhou 730020, Peoples R China 4.Chinese Acad Sci, Inst Modern Phys, Dept Radiobiol, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Xia,Zhou, Maoxian,Dong, Xicun,et al. Molecular mechanisms of foliar water uptake in a desert tree[J]. AOB PLANTS,2015,7:14. |
| APA | Yan, Xia,Zhou, Maoxian,Dong, Xicun,Zou, Songbing,Xiao, Honglang,&Ma, Xiao-Fei.(2015).Molecular mechanisms of foliar water uptake in a desert tree.AOB PLANTS,7,14. |
| MLA | Yan, Xia,et al."Molecular mechanisms of foliar water uptake in a desert tree".AOB PLANTS 7(2015):14. |
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来源：寒区旱区环境与工程研究所
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