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Expression data from Arabidopsis thaliana under phosphate starvation stress

ABSTRACT: We performed a transcriptomic analysis of Pi starvation responses in Arabidopsis thaliana (Columbia-0) wild type plants under phosphate starvation stress and in plants with altered PHR1(-like) activity, comparing mutants of phr1 and phr1-phl1 grown in phosphate-lacking medium. Results show the central role of PHR1 and functionally redundant members of its family in the control of transcriptional responses to Pi starvation. The analysis was performed in wild-type plants grown for seven days in complete (+Pi) and Pi-lacking (-Pi) Johnson solid media and the single phr1 and double phr1-phl1 mutants grown for 7 days in –Pi medium. Three independent biological samples of total RNA from shoot and root were hybridized separately.

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Regla Bustos

PROVIDER: E-GEOD-16722 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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A central regulatory system largely controls transcriptional activation and repression responses to phosphate starvation in Arabidopsis.

Bustos Regla R Castrillo Gabriel G Linhares Francisco F Puga María Isabel MI Rubio Vicente V Pérez-Pérez Julian J Solano Roberto R Leyva Antonio A Paz-Ares Javier J

PLoS genetics 20100909 9

Plants respond to different stresses by inducing or repressing transcription of partially overlapping sets of genes. In Arabidopsis, the PHR1 transcription factor (TF) has an important role in the control of phosphate (Pi) starvation stress responses. Using transcriptomic analysis of Pi starvation in phr1, and phr1 phr1-like (phl1) mutants and in wild type plants, we show that PHR1 in conjunction with PHL1 controls most transcriptional activation and repression responses to phosphate starvation, ...[more]

PMID: 20838596

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Expression data from Arabidopsis thaliana PHR1 primary targets genes under phosphate starvation stress

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