Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcription profiling of Arabidopsis plants with high or low ZmDREB2A expression to investigate stress responses

ABSTRACT: ZmDREB2A is a DREB2-type transcription factor cloned from maize, whose transcript was upregulated by drought, high salt, low temperature and heat stresses. The ZmDREB2A gene possesses two kinds of transcription forms by alternative splicing. Only the functional form was studied to be highly induced by stresses. Transgenic plants overexpressing ZmDREB2A (35S:ZmDREB2A) showed dwarfism and enhanced drought stress tolerance. Microarray analysis of two independent transgenic plants revealed that in addition to genes encoding LEA proteins, some genes related to heat shock and detoxification were also upregulated. Experiments on termotolerance tests of these transgenic plants showed overexpressing ZmDREB2A gene also improved plant tolerance to heat stress.

INSTRUMENT(S): DNA Microarray Scanner BA [Agilent Technologies]

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Feng QIN 

PROVIDER: E-MEXP-819 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Regulation and functional analysis of ZmDREB2A in response to drought and heat stresses in Zea mays L.

Qin Feng F   Kakimoto Masayuki M   Sakuma Yoh Y   Maruyama Kyonoshin K   Osakabe Yuriko Y   Tran Lam-Son Phan LS   Shinozaki Kazuo K   Yamaguchi-Shinozaki Kazuko K  

The Plant journal : for cell and molecular biology 20070305 1

DREB1/CBFs and DREB2s are transcription factors that specifically interact with a cis-acting element, DRE/CRT, which is involved in the expression of genes responsive to cold and drought stress in Arabidopsis thaliana. The function of DREB1/CBFs has been precisely analyzed and it has been found to activate the expression of many genes responsive to cold stress containing a DRE/CRT sequence in their promoters. However, the regulation and function of DREB2-type transcription factors remained to be  ...[more]

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