A single nucleotide substitution in TaHKT1;5-D controls shoot Na+ accumulation in bread wheat

Chana Borjigin; Rhiannon K. Schilling; Jayakumar Bose; Maria Hrmova; Jiaen Qiu; Stefanie Wege; Apriadi Situmorang; Caitlin Byrt; Chris Brien; Bettina Berger; Matthew Gilliham; Allison S. Pearson; Stuart J. Roy

doi:10.1111/pce.13841

A single nucleotide substitution in TaHKT1;5-D controls shoot Na+ accumulation in bread wheat

Chana Borjigin
, Rhiannon K. Schilling
, Jayakumar Bose
, Maria Hrmova
, Jiaen Qiu
, Stefanie Wege
, Apriadi Situmorang
, Caitlin Byrt
, Chris Brien
, Bettina Berger
, Matthew Gilliham
, Allison S. Pearson
, Stuart J. Roy

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

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 sixfold 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.

Original language	English
Pages (from-to)	2158-2171
Number of pages	14
Journal	Plant , Cell and Environment
Volume	43
Issue number	9
DOIs	https://doi.org/10.1111/pce.13841
Publication status	Published - 1 Sept 2020

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© 2020 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd.

Open Access - Access Right Statement

This is an open access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. © 2020 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd.

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10.1111/pce.13841

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@article{9b4f7e1c679845c99bdb989bd72d5a96,

title = "A single nucleotide substitution in TaHKT1;5-D controls shoot Na+ accumulation in bread wheat",

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 sixfold 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.",

author = "Chana Borjigin and Schilling, \{Rhiannon K.\} and Jayakumar Bose and Maria Hrmova and Jiaen Qiu and Stefanie Wege and Apriadi Situmorang and Caitlin Byrt and Chris Brien and Bettina Berger and Matthew Gilliham and Pearson, \{Allison S.\} and Roy, \{Stuart J.\}",

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doi = "10.1111/pce.13841",

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T1 - A single nucleotide substitution in TaHKT1;5-D controls shoot Na+ accumulation in bread wheat

AU - Borjigin, Chana

AU - Schilling, Rhiannon K.

AU - Bose, Jayakumar

AU - Hrmova, Maria

AU - Qiu, Jiaen

AU - Wege, Stefanie

AU - Situmorang, Apriadi

AU - Byrt, Caitlin

AU - Brien, Chris

AU - Berger, Bettina

AU - Gilliham, Matthew

AU - Pearson, Allison S.

AU - Roy, Stuart J.

PY - 2020/9/1

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N2 - 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 sixfold 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.

AB - 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 sixfold 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.

UR - https://hdl.handle.net/1959.7/uws:60688

U2 - 10.1111/pce.13841

DO - 10.1111/pce.13841

M3 - Article

C2 - 32652543

SN - 0140-7791

VL - 43

SP - 2158

EP - 2171

JO - Plant , Cell and Environment

JF - Plant , Cell and Environment

IS - 9

ER -

A single nucleotide substitution in TaHKT1;5-D controls shoot Na+ accumulation in bread wheat

Abstract

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