Unknown,Transcriptomics,Genomics,Proteomics

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Growth temperature response in Arabidopsis


ABSTRACT: Moderate increases in the ambient temperature promote hypocotyl growth in Arabidopsis, and this response is totally dependent on the proper activity of the auxin, gibberellin, and brassinosteroid pathways. We have analyzed global the changes in gene expression that occur in Arabidopsis seedlings after a moderate increase in the growth temperature (20ºC to 29ºC for 2 hours). In order to understand how the different hormone pathways affect this growth response, the same transcription profiling analysis was conducted in seedlings deficient in each hormone. Keywords: Growth condition We performed three replicas of each sample category: wild type mock-treated, wild type PAC-treated, wild type NPA-treated, and det2-1 mutants. Samples transferred from 20ºC to 29ºC of replicas #2 and #3 were labelled with Cy3, whereas those kept at 20ºC were Cy5-labelled. Samples of replica #1 were reversed-labelled.

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: J García-Martínez 

PROVIDER: E-GEOD-13822 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Hormonal regulation of temperature-induced growth in Arabidopsis.

Stavang Jon A JA   Gallego-Bartolomé Javier J   Gómez María D MD   Yoshida Shigeo S   Asami Tadao T   Olsen Jorunn E JE   García-Martínez José L JL   Alabadí David D   Blázquez Miguel A MA  

The Plant journal : for cell and molecular biology 20090722 4


Successful plant survival depends upon the proper integration of information from the environment with endogenous cues to regulate growth and development. We have investigated the interplay between ambient temperature and hormone action during the regulation of hypocotyl elongation, and we have found that gibberellins (GAs) and auxin are quickly and independently recruited by temperature to modulate growth rate, whereas activity of brassinosteroids (BRs) seems to be required later on. Impairment  ...[more]

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