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

journal contribution
posted on 2023-05-19, 23:43 authored by Bohm, J, Messerer, M, Muller, HM, Scholz-Starke, J, Gradogna, A, Scherzer, S, Maierhofer, T, Bazihizina, N, Zhang, H, Stigloher, C, Ache, P, Al-Rasheid, KAS, Mayer, KFX, Sergey ShabalaSergey Shabala, Carpaneto, A, Haberer, G, Zhu, J-K, Hedrich, R
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.

History

Publication title

Current Biology

Volume

28

Issue

19

Pagination

3075-3085

ISSN

0960-9822

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

Cell Press

Place of publication

1100 Massachusetts Ave, Cambridge, USA, Ma, 02138

Rights statement

Copyright 2018 Elsevier Ltd.

Repository Status

  • Restricted

Socio-economic Objectives

Other plant production and plant primary products not elsewhere classified

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