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Apoplastic barriers, aquaporin gene expression and root and cell hydraulic conductivity in phosphate-limited sheepgrass plants | |
Li, Lingyu1,2,3; Pan, Sirui1; Melzer, Rainer1; Fricke, Wieland1 | |
2020 | |
发表期刊 | PHYSIOLOGIA PLANTARUM |
ISSN | 0031-9317 |
卷号 | 168期号:1页码:118-132 |
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. |
学科领域 | Plant Sciences |
DOI | 10.1111/ppl.12981 |
收录类别 | SCI |
语种 | 英语 |
WOS关键词 | WATER TRANSPORT-PROPERTIES ; BARLEY ROOTS ; L. ; RESPONSES ; TRANSPIRATION ; ENDODERMIS ; PRESSURE ; CHANNELS ; NITROGEN ; IONS |
WOS研究方向 | Plant Sciences |
WOS记录号 | WOS:000506175900009 |
出版者 | WILEY |
文献子类 | Article |
出版地 | HOBOKEN |
EISSN | 1399-3054 |
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 |
作者邮箱 | wieland.fricke@ucd.ie |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | 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. |
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Li-2020-Apoplastic b(740KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 |
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