Comparative transcriptome profiling of chilling stress responsiveness in two contrasting rice genotypes.

Szczegóły
Abstrakt

Tytuł:: Comparative transcriptome profiling of chilling stress responsiveness in two contrasting rice genotypes.
Autorzy:: Zhang T; Engineering Research Center for Plant Biotechnology and Germplasm Utilization, Ministry of Education, State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China.
Zhao X
Wang W
Pan Y
Huang L
Liu X
Zong Y
Zhu L
Yang D
Fu B
Źródło:: PloS one [PLoS One] 2012; Vol. 7 (8), pp. e43274. Date of Electronic Publication: 2012 Aug 17.
Typ publikacji:: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't
Język:: English
Imprint Name(s):: Original Publication: San Francisco, CA : Public Library of Science
MeSH Terms:: Cold Temperature*
Gene Expression Regulation, Plant/*genetics
Oryza/*genetics
Stress, Physiological/*genetics
Cluster Analysis ; Gene Expression Profiling ; Gene Expression Regulation, Plant/physiology ; Genotype ; Oligonucleotide Array Sequence Analysis ; Quantitative Trait Loci/genetics ; Real-Time Polymerase Chain Reaction ; Regulon/genetics ; Stress, Physiological/physiology ; Time Factors
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Molecular Sequence:: GEO GSE38023
Entry Date(s):: Date Created: 20120823 Date Completed: 20130501 Latest Revision: 20220311
Update Code:: 20240104
PubMed Central ID:: PMC3422246
DOI:: 10.1371/journal.pone.0043274
PMID:: 22912843
: Czasopismo naukowe

Pełny tekst

Rice is sensitive to chilling stress, especially at the seedling stage. To elucidate the molecular genetic mechanisms of chilling tolerance in rice, comprehensive gene expressions of two rice genotypes (chilling-tolerant LTH and chilling-sensitive IR29) with contrasting responses to chilling stress were comparatively analyzed. Results revealed a differential constitutive gene expression prior to stress and distinct global transcription reprogramming between the two rice genotypes under time-series chilling stress and subsequent recovery conditions. A set of genes with higher basal expression were identified in chilling-tolerant LTH compared with chilling-sensitive IR29, indicating their possible role in intrinsic tolerance to chilling stress. Under chilling stress, the major effect on gene expression was up-regulation in the chilling- tolerant genotype and strong repression in chilling-sensitive genotype. Early responses to chilling stress in both genotypes featured commonly up-regulated genes related to transcription regulation and signal transduction, while functional categories for late phase chilling regulated genes were diverse with a wide range of functional adaptations to continuous stress. Following the cessation of chilling treatments, there was quick and efficient reversion of gene expression in the chilling-tolerant genotype, while the chilling-sensitive genotype displayed considerably slower recovering capacity at the transcriptional level. In addition, the detection of differentially-regulated TF genes and enriched cis-elements demonstrated that multiple regulatory pathways, including CBF and MYBS3 regulons, were involved in chilling stress tolerance. A number of the chilling-regulated genes identified in this study were co-localized onto previously fine-mapped cold-tolerance-related QTLs, providing candidates for gene cloning and elucidation of molecular mechanisms responsible for chilling tolerance in rice.

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