Transcriptomics

Dataset Information

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Time-course expression analysis of the low pH (pH 4.6) response in Arabidopsis whole roots


ABSTRACT: We preformed at time-course of the expression of whole Arabidopsis roots for 30 minutes, 1H, 3H, 6H 12H, 24H, and 48H after transfer to low pH (pH 4.6). Controls at the standard pH (pH 5.7) were included at each time-point. We combined these data with 13 other datasests and performed a meta-analysis to ask whether a universal stress response exists in Arabidopsis roots. Stress responses in plants are tightly coordinated with developmental processes, but the interaction between these pathways is poorly understood. Here we use genome-wide assays at high spatial and temporal resolution to understand the processes that lnk development and stress in the Arabidopsis root. Our meta-analysis finds little evidence for a universal stress response. Common stress responses appear to exists and, analagous to animal systems, many of them show cell-type specificity, suggesting a convergent evolutionary theme in multicellular organisms. Common stress responses may be mediated by cell identity regulators, as mutations in these genes resulted in altered responses to stress. Our results reveal surprising linkages between stress and development at cellular resolution, and show the power of multiple genome-wide datasets to elucidate biological processes. 28 samples: 7 time points, with two replicates for each timepoint for both the control (pH 5.7) and treatment (pH 4.6)

OTHER RELATED OMICS DATASETS IN: E-GEOD-30095

ORGANISM(S): Arabidopsis thaliana  

SUBMITTER: Anjali S Iyer-Pascuzzi   Philip N Benfey 

PROVIDER: E-GEOD-30097 | ArrayExpress | 2011-11-23

SECONDARY ACCESSION(S): GSE30097PRJNA155177

REPOSITORIES: GEO, ArrayExpress

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Publications

Cell identity regulators link development and stress responses in the Arabidopsis root.

Iyer-Pascuzzi Anjali S AS   Jackson Terry T   Cui Hongchang H   Petricka Jalean J JJ   Busch Wolfgang W   Tsukagoshi Hironaka H   Benfey Philip N PN  

Developmental cell 20111001 4


Stress responses in plants are tightly coordinated with developmental processes, but interaction of these pathways is poorly understood. We used genome-wide assays at high spatiotemporal resolution to understand the processes that link development and stress in the Arabidopsis root. Our meta-analysis finds little evidence for a universal stress response. However, common stress responses appear to exist with many showing cell type specificity. Common stress responses may be mediated by cell ident  ...[more]

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