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Type: Journal article
Title: A single nucleotide substitution in TaHKT1;5-D controls shoot Na⁺ accumulation in bread wheat
Other Titles: A single nucleotide substitution in TaHKT1;5-D controls shoot Na(+) accumulation in bread wheat
Author: Borjigin, C.
Schilling, R.K.
Bose, J.
Hrmova, M.
Qiu, J.
Wege, S.
Situmorang, A.
Byrt, C.
Brien, C.
Berger, B.
Gilliham, M.
Pearson, A.S.
Roy, S.J.
Citation: Plant, Cell and Environment, 2020; 43(9):2158-2171
Publisher: Wiley
Issue Date: 2020
ISSN: 0140-7791
Statement of
Chana Borjigin, Rhiannon K. Schilling, Jayakumar Bose, Maria Hrmova, Jiaen Qiu, Stefanie Wege ... et al.
Abstract: Improving salinity tolerance in the most widely cultivated cereal, bread wheat (Triticum aestivum L.), is essential to increase grain yields on saline agricultural lands. A Portuguese landrace, Mocho de Espiga Branca accumulates up to six-fold greater leaf and sheath sodium (Na+ ) than two Australian cultivars, Gladius and Scout, under salt stress in hydroponics. Despite high leaf and sheath Na+ concentrations, Mocho de Espiga Branca maintained similar salinity tolerance compared to Gladius and Scout. A naturally occurring single nucleotide substitution was identified in the gene encoding a major Na+ transporter TaHKT1;5-D in Mocho de Espiga Branca, which resulted in a L190P amino acid residue variation. This variant prevents Mocho de Espiga Branca from retrieving Na+ from the root xylem leading to a high shoot Na+ concentration. The identification of the tissue tolerant Mocho de Espiga Branca will accelerate the development of more elite salt tolerant bread wheat cultivars. This article is protected by copyright. All rights reserved.
Keywords: Bread wheat
Na+ transport
plant growth
salt tolerance
xylem sap Na+
Description: First published: 11 July 2020
Rights: © 2020 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
DOI: 10.1111/pce.13841
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Appears in Collections:Agriculture, Food and Wine publications
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