Microarray analysis of transcriptional responses to abscisic acid and salt stress in Arabidopsis thaliana

Abscisic acid (ABA) plays a crucial role in plant responses to abiotic stress. To investigate differences in plant responses to salt and ABA stimulus, differences in gene expression in Arabidopsis in response to salt and ABA were compared using an Agilent oligo microarray. A total of 144 and 139 gen...

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Bibliographic Details
Published in:International journal of molecular sciences 2013-05, Vol.14 (5), p.9979-9998
Main Authors: Liu, Yujia, Ji, Xiaoyu, Zheng, Lei, Nie, Xianguang, Wang, Yucheng
Format: Article
Language:English
Subjects:
ABA
Abiotic stress
Abscisic acid
Abscisic Acid - metabolism
Arabidopsis
Arabidopsis - genetics
Arabidopsis - physiology
Arabidopsis Proteins - genetics
Arabidopsis thaliana
Biosynthesis
Gene expression
Gene Expression Regulation, Plant
microarray analysis
Proteins
Salinity
salt stress
Signal transduction
Sodium Chloride - metabolism
Stress, Physiological
Transcription factors
Transcriptional Activation
Transcriptome
Water shortages
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Summary:Abscisic acid (ABA) plays a crucial role in plant responses to abiotic stress. To investigate differences in plant responses to salt and ABA stimulus, differences in gene expression in Arabidopsis in response to salt and ABA were compared using an Agilent oligo microarray. A total of 144 and 139 genes were significantly up- and downregulated, respectively, under NaCl stress, while 406 and 381 genes were significantly up- and downregulated, respectively, under ABA stress conditions. In addition, 31 genes were upregulated by both NaCl and ABA stresses, and 23 genes were downregulated by these stressors, suggesting that these genes may play similar roles in plant responses to salt and ABA stress. Gene ontology (GO) analysis revealed four subgroups of genes, including genes in the GO categories "Molecular transducer activity", "Growth", "Biological adhesion" and "Pigmentation", which were expressed in response to ABA stress but not NaCl stress. In addition, genes that play specific roles during salt or ABA stress were identified. Our results may help elucidate differences in the response of plants to salt and ABA stress.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms14059979