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Type: Journal article
Title: Comparison of leaf sheath transcriptome profiles with physiological traits of bread wheat cultivars under salinity stress
Author: Takahashi, F.
Tilbrook, J.
Trittermann, C.
Berger, B.
Roy, S.
Seki, M.
Shinozaki, K.
Tester, M.
Citation: PLoS One, 2015; 10(8):e0133322-1-e0133322-23
Publisher: Public Library of Science
Issue Date: 2015
ISSN: 1932-6203
Statement of
Fuminori Takahashi, Joanne Tilbrook, Christine Trittermann, Bettina Berger, Stuart J. Roy, Motoaki Seki, Kazuo Shinozaki, Mark Tester
Abstract: Salinity stress has significant negative effects on plant biomass production and crop yield. Salinity tolerance is controlled by complex systems of gene expression and ion transport. The relationship between specific features of mild salinity stress adaptation and gene expression was analyzed using four commercial varieties of bread wheat (Triticum aestivum) that have different levels of salinity tolerance. The high-throughput phenotyping system in The Plant Accelerator at the Australian Plant Phenomics Facility revealed variation in shoot relative growth rate and salinity tolerance among the four cultivars. Comparative analysis of gene expression in the leaf sheaths identified genes whose functions are potentially linked to shoot biomass development and salinity tolerance. Early responses to mild salinity stress through changes in gene expression have an influence on the acquisition of stress tolerance and improvement in biomass accumulation during the early "osmotic" phase of salinity stress. In addition, results revealed transcript profiles for the wheat cultivars that were different from those of usual stress-inducible genes, but were related to those of plant growth. These findings suggest that, in the process of breeding, selection of specific traits with various salinity stress-inducible genes in commercial bread wheat has led to adaptation to mild salinity conditions.
Keywords: Triticum; Plant Leaves; Plant Shoots; Sodium Chloride; Plant Proteins; Oligonucleotide Array Sequence Analysis; Cluster Analysis; Reverse Transcriptase Polymerase Chain Reaction; Biomass; Gene Expression Regulation, Plant; Genes, Plant; Salinity; Stress, Physiological; Salt-Tolerance; Transcriptome; Seedlings; Plant Breeding
Rights: © 2015 Takahashi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
RMID: 0030033219
DOI: 10.1371/journal.pone.0133322
Appears in Collections:Agriculture, Food and Wine publications

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