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

Citation

Bohm, J and Messerer, M and Muller, HM and Scholz-Starke, J and Gradogna, A and Scherzer, S and Maierhofer, T and Bazihizina, N and Zhang, H and Stigloher, C and Ache, P and Al-Rasheid, KAS and Mayer, KFX and Shabala, S and Carpaneto, A and Haberer, G and Zhu, J-K and Hedrich, R, Understanding the molecular basis of salt sequestration in epidermal bladder cells of Chenopodium quinoa, Current Biology, 28, (19) pp. 3075-3085. ISSN 0960-9822 (2018) [Refereed Article]

Copyright Statement

Copyright 2018 Elsevier Ltd.

DOI: doi:10.1016/j.cub.2018.08.004

Abstract

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.

Item Details

Item Type:Refereed Article
Keywords:quinoa, HKT, sodium, potassium, bladder cells
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Plant Physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Other Plant Production and Plant Primary Products
Objective Field:Plant Production and Plant Primary Products not elsewhere classified
UTAS Author:Bohm, J (Ms Jennifer Bohm)
UTAS Author:Shabala, S (Professor Sergey Shabala)
ID Code:130057
Year Published:2018
Web of Science® Times Cited:4
Deposited By:Agriculture and Food Systems
Deposited On:2019-01-08
Last Modified:2019-03-12
Downloads:0

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