中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 植物研究所
  3. 中国科学院植物研究所
  4. 中科院光生物学重点实验室
Apoplastic barriers, aquaporin gene expression and root and cell hydraulic conductivity in phosphate-limited sheepgrass plants

文献类型：期刊论文

作者Li, Lingyu1,2,3; Pan, Sirui1; Melzer, Rainer1; Fricke, Wieland1
刊名PHYSIOLOGIA PLANTARUM
出版日期2020
卷号168期号:1页码:118-132
ISSN号0031-9317
DOI10.1111/ppl.12981
文献子类Article
英文摘要Mineral nutrient supply can affect the hydraulic property of roots. The aim of the present work on sheepgrass (Leymus chinensis L.) plants was to test whether any changes in root hydraulic conductivity (Lp; exudation analyses) in response to a growth-limiting supply of phosphate (P) are accompanied by changes in (1) cell Lp via measuring the cell pressure, (2) the aquaporin (AQP) gene expression by performing qPCR and (3) the formation of apoplastic barriers, by analyzing suberin lamella and Casparian bands via cross-sectional analyses in roots. Plants were grown hydroponically on complete nutrient solution, containing 250 mu M P, until they were 31-36 days old, and then kept for 2-3 weeks on either complete solution, or transferred on solution containing 2.5 mu M (low-P) or no added P (no-P). Phosphate treatments caused significant decreases in root and cell-Lp and AQP gene expression, while the formation of apoplastic barriers increased, particularly in lateral roots. Experiments using the AQP inhibitor mercury (Hg) suggested that a significant portion of radial root water uptake in sheepgrass occurs along a path involving AQPs, and that the Lp of this path is reduced under low- and no-P. It is concluded that a growth-limiting supply of phosphate causes parallel changes in (1) cell Lp and aquaporin gene expression (decrease) and (2) apoplastic barrier formation (increase), and that the two may combine to reduce root Lp. The reduction in root Lp, in turn, facilitates an increased root-to-shoot surface area ratio, which allocates resources to the root, sourcing the limiting nutrient.
学科主题Plant Sciences
出版地HOBOKEN
电子版国际标准刊号1399-3054
WOS关键词WATER TRANSPORT-PROPERTIES ; BARLEY ROOTS ; L. ; RESPONSES ; TRANSPIRATION ; ENDODERMIS ; PRESSURE ; CHANNELS ; NITROGEN ; IONS
WOS研究方向Plant Sciences
语种英语
WOS记录号WOS:000506175900009
出版者WILEY
资助机构Chinese Scholarship CouncilChina Scholarship Council Funding Source: Medline ; University College Dublin Funding Source: Medline ; Science and Technology Innovation Funds of Shanxi Agricultural University [2018YJ49] Funding Source: Medline
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/21954]  
专题中科院光生物学重点实验室
作者单位1.Shanxi Agr Univ, Coll Life Sci, Taigu, Peoples R China
2.Univ Coll Dublin, Sch Biol & Environm Sci, Dublin, Ireland
3.Chinese Acad Sci, Inst Bot, Key Lab Photobiol, Beijing 100093, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Li, Lingyu,Pan, Sirui,Melzer, Rainer,et al. Apoplastic barriers, aquaporin gene expression and root and cell hydraulic conductivity in phosphate-limited sheepgrass plants[J]. PHYSIOLOGIA PLANTARUM,2020,168(1):118-132.
APA Li, Lingyu,Pan, Sirui,Melzer, Rainer,&Fricke, Wieland.(2020).Apoplastic barriers, aquaporin gene expression and root and cell hydraulic conductivity in phosphate-limited sheepgrass plants.PHYSIOLOGIA PLANTARUM,168(1),118-132.
MLA Li, Lingyu,et al."Apoplastic barriers, aquaporin gene expression and root and cell hydraulic conductivity in phosphate-limited sheepgrass plants".PHYSIOLOGIA PLANTARUM 168.1(2020):118-132.

入库方式： OAI收割

来源：植物研究所

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。