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Böhm, J.* ; Messerer, M. ; Müller, H.M.* ; Scholz-Starke, J.* ; Gradogna, A.* ; Scherzer, S.* ; Maierhofer, T.* ; Bazihizina, N.* ; Zhang, H.* ; Stigloher, C.* ; Ache, P.* ; Al-Rasheid, K.A.S.* ; Mayer, K.F.X. ; Shabala, S.* ; Carpaneto, A.* ; Haberer, G. ; Zhu, J.K.* ; Hedrich, R.*

Understanding the molecular basis of salt sequestration in epidermal bladder cells of Chenopodium quinoa.

Curr. Biol. 28, 3075-3085.e7 (2018)
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Soil salinity is destroying arable land and is considered to be one of the major threats to global food security in the 21st century. Therefore, the ability of naturally salt-tolerant halophyte plants to sequester large quantities of salt in external structures, such as epidermal bladder cells (EBCs), is of great interest. Using Chenopodium quinoa, a pseudo-cereal halophyte of great economic potential, we have shown previously that, upon removal of salt bladders, quinoa becomes salt sensitive. In this work, we analyzed the molecular mechanism underlying the unique salt dumping capabilities of bladder cells in quinoa. The transporters differentially expressed in the EBC transcriptome and functional electrophysiological testing of key EBC transporters in Xenopus oocytes revealed that loading of Na+ and Cl- into EBCs is mediated by a set of tailored plasma and vacuole membrane-based sodium-selective channel and chloride-permeable transporter.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Hkt ; Epidermal Bladder Cell ; Halophyte ; Quinoa ; Salt Stress ; Salt Transport; Affinity K+ Uptake; Arabidopsis-thaliana; Salinity Tolerance; Mesembryanthemum-crystallinum; Nitrate Accumulation; Expression Patterns; Na+/h+ Antiporter; Hkt Transporters; Gene-expression; Ion-transport
Language english
Publication Year 2018
HGF-reported in Year 2018
ISSN (print) / ISBN 0960-9822
e-ISSN 1879-0445
Journal Current Biology
Quellenangaben Volume: 28, Issue: 19, Pages: 3075-3085.e7 Article Number: , Supplement: ,
Publisher Elsevier
Publishing Place 50 Hampshire St, Floor 5, Cambridge, Ma 02139 Usa
Reviewing status Peer reviewed
Institute(s) Research Unit Plant Genome and Systems Biology (PGSB)
POF-Topic(s) 30202 - Environmental Health
Research field(s) Environmental Sciences
PSP Element(s) G-503500-002
DOI 10.1016/j.cub.2018.08.004
WOS ID WOS:000446693400023
PubMed ID 30245105
Erfassungsdatum 2018-10-02
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