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Water stress-Identification of targets of the transcription factor hahb-4 in relation to abiotic stress

ABSTRACT: rs04-09_hahb4 - water stress - We want to know which genes are over-expressed or down regulated in Arabidopsis plants transformed with the sunflower hahb-4 homeodomain transcription factor with respect to non transformed ones in control and water stress conditions. This gene, hahb4, confers drought tolerance to transgenic Arabidopsis plants. - Overexpression of the hahb4 gene vs vector transformed control Keywords: gene knock in (transgenic),treated vs untreated comparison 3 dye-swap - CATMA arrays

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: VÃ©ronique BRUNAUD

PROVIDER: E-GEOD-8878 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Cross-talk between ethylene and drought signalling pathways is mediated by the sunflower Hahb-4 transcription factor.

Manavella Pablo A PA Arce Agustín L AL Dezar Carlos A CA Bitton Frédérique F Renou Jean-Pierre JP Crespi Martin M Chan Raquel L RL

The Plant journal : for cell and molecular biology 20061001 1

Hahb-4 is a member of the Helianthusannuus (sunflower) subfamily I of HD-Zip proteins that is transcriptionally regulated by water availability and abscisic acid. Transgenic Arabidopsis thaliana plants overexpressing this transcription factor (TF) exhibit a characteristic phenotype that includes a strong tolerance to water stress. Here we show that this TF is a new component of ethylene signalling pathways, and that it induces a marked delay in senescence. Plants overexpressing Hahb-4 are less s ...[more]

PMID: 16972869

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