Comparison of Leaf Sheath Transcriptome Profiles with Physiological Traits of Bread Wheat Cultivars under Salinity Stress
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Type
ArticleAuthors
Takahashi, FuminoriTilbrook, Joanne
Trittermann, Christine
Berger, Bettina
Roy, Stuart J.
Seki, Motoaki
Shinozaki, Kazuo
Tester, Mark A.

KAUST Department
Biological and Environmental Sciences and Engineering (BESE) DivisionPlant Science Program
Desert Agriculture Initiative
Date
2015-08-05Permanent link to this record
http://hdl.handle.net/10754/579488
Metadata
Show full item recordAbstract
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.Citation
Comparison of Leaf Sheath Transcriptome Profiles with Physiological Traits of Bread Wheat Cultivars under Salinity Stress 2015, 10 (8):e0133322 PLOS ONEPublisher
Public Library of Science (PLoS)Journal
PLoS ONEAdditional Links
http://dx.plos.org/10.1371/journal.pone.0133322ae974a485f413a2113503eed53cd6c53
10.1371/journal.pone.0133322