Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/nph.14672 |
The desert plant Phoenix dactylifera closes stomata via nitrate-regulated SLAC1 anion channel | |
Mueller, Heike M.1; Schaefer, Nadine1; Bauer, Hubert1; Geiger, Dietmar1; Lautner, Silke2; Fromm, Joerg2; Riederer, Markus3; Bueno, Amauri3; Nussbaumer, Thomas4; Mayer, Klaus4; Alquraishi, Saleh A.5; Alfarhan, Ahmed H.5; Neher, Erwin6; Al-Rasheid, Khaled A. S.1,5; Ache, Peter1; Hedrich, Rainer1 | |
通讯作者 | Geiger, Dietmar ; Hedrich, Rainer |
来源期刊 | NEW PHYTOLOGIST
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ISSN | 0028-646X |
EISSN | 1469-8137 |
出版年 | 2017 |
卷号 | 216期号:1页码:150-162 |
英文摘要 | Date palm Phoenix dactylifera is a desert crop well adapted to survive and produce fruits under extreme drought and heat. How are palms under such harsh environmental conditions able to limit transpirational water loss? Here, we analysed the cuticular waxes, stomata structure and function, and molecular biology of guard cells from P. dactylifera. To understand the stomatal response to the water stress phytohormone of the desert plant, we cloned the major elements necessary for guard cell fast abscisic acid (ABA) signalling and reconstituted this ABA signalosome in Xenopus oocytes. The Phoenix SLAC1-type anion channel is regulated by ABA kinase PdOST1. Energy-dispersive X-ray analysis (EDXA) demonstrated that date palm guard cells release chloride during stomatal closure. However, in Cl- medium, PdOST1 did not activate the desert plant anion channel PdSLAC1 per se. Only when nitrate was present at the extracellular face of the anion channel did the OST1-gated PdSLAC1 open, thus enabling chloride release. In the presence of nitrate, ABA enhanced and accelerated stomatal closure. Our findings indicate that, in date palm, the guard cell osmotic motor driving stomatal closure uses nitrate as the signal to open the major anion channel SLAC1. This initiates guard cell depolarization and the release of anions together with potassium. |
英文关键词 | abscisic acid (ABA) signalling cuticle cuticular waxes date palm Phoenix dactylifera guard cells SLAC1 S-type anion channel stomata |
类型 | Article |
语种 | 英语 |
国家 | Germany ; Saudi Arabia |
收录类别 | SCI-E |
WOS记录号 | WOS:000408591500017 |
WOS关键词 | ABSCISIC-ACID ; PLASMA-MEMBRANE ; GUARD-CELLS ; KINASE ; LIGHT ; ABA ; ACTIVATION ; CHLORIDE ; MOVEMENT ; ACCUMULATION |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
来源机构 | King Saud University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/201253 |
作者单位 | 1.Univ Wurzburg, Julius von Sachs Inst, Inst Mol Plant Physiol & Biophys, Bioctr, D-97082 Wurzburg, Germany; 2.Univ Hamburg, Dept Wood Sci, D-21031 Hamburg, Germany; 3.Univ Wurzburg, Inst Ecophysiol & Vegetat Ecol, Julius von Sachs Inst, Bioctr, D-97082 Wurzburg, Germany; 4.Helmholtz Ctr Munich, Plant Genome & Syst Biol, D-85764 Neuherberg, Germany; 5.King Saud Univ, Coll Sci, Riyadh 11451, Saudi Arabia; 6.Max Planck Inst Biophys Chem, Dept Membrane Biophys, D-37077 Gottingen, Germany |
推荐引用方式 GB/T 7714 | Mueller, Heike M.,Schaefer, Nadine,Bauer, Hubert,et al. The desert plant Phoenix dactylifera closes stomata via nitrate-regulated SLAC1 anion channel[J]. King Saud University,2017,216(1):150-162. |
APA | Mueller, Heike M..,Schaefer, Nadine.,Bauer, Hubert.,Geiger, Dietmar.,Lautner, Silke.,...&Hedrich, Rainer.(2017).The desert plant Phoenix dactylifera closes stomata via nitrate-regulated SLAC1 anion channel.NEW PHYTOLOGIST,216(1),150-162. |
MLA | Mueller, Heike M.,et al."The desert plant Phoenix dactylifera closes stomata via nitrate-regulated SLAC1 anion channel".NEW PHYTOLOGIST 216.1(2017):150-162. |
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