Cell Identity Mediates the Response of Arabidopsis Roots to Abiotic Stress

@article{Dinneny2008CellIM,
  title={Cell Identity Mediates the Response of Arabidopsis Roots to Abiotic Stress},
  author={Jos{\'e} R. Dinneny and Terri A. Long and Jean Y. J. Wang and Jee W. Jung and Daniel L. Mace and Solomon Pointer and Christa Barron and Siobh{\'a}n M. Brady and John Schiefelbein and Philip N. Benfey},
  journal={Science},
  year={2008},
  volume={320},
  pages={942 - 945}
}
Little is known about the way developmental cues affect how cells interpret their environment. We characterized the transcriptional response to high salinity of different cell layers and developmental stages of the Arabidopsis root and found that transcriptional responses are highly constrained by developmental parameters. These transcriptional changes lead to the differential regulation of specific biological functions in subsets of cell layers, several of which correspond to observable… 
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References

SHOWING 1-10 OF 63 REFERENCES
Integration of Arabidopsis thaliana stress-related transcript profiles, promoter structures, and cell-specific expression
TLDR
A common stress transcriptome is defined that apparently represents universal cell-level stress responses in Arabidopsis, and known stress-related 5' cis-elements on a genome-wide scale are confirmed, and secondary motifs are identified.
A High-Resolution Root Spatiotemporal Map Reveals Dominant Expression Patterns
TLDR
Methods that combine microarray expression profiles of a high-resolution set of developmental time points within a single Arabidopsis root and a comprehensive map of nearly all root cell types demonstrate transcriptionally rich and complex programs that define Arabidrosis root development in both space and time.
Expression of cell cycle regulatory genes and morphological alterations in response to salt stress in Arabidopsis thaliana
TLDR
The data indicate that salt stress interferes with cell cycle regulation at the transcriptional level, resulting in an adaptive growth response in Arabidopsis thaliana.
Positional Signaling Mediated by a Receptor-like Kinase in Arabidopsis
TLDR
A new gene, SCRAMBLED (SCM), is described, required for cells to appropriately interpret their location within the developing root epidermis and likely enables developing epidermal cells to detect positional cues and establish an appropriate cell-type pattern.
A Gene Expression Map of the Arabidopsis Root
TLDR
Localization of expression of more than 22,000 genes in the Arabidopsis root correlates groups of genes to specific cell fates and should serve to guide reverse genetics.
Environmentally Induced Plasticity of Root Hair Development in Arabidopsis1
TLDR
Divergence in root hair patterning was most pronounced among mutants with defects in genes that affect the first stages of differentiation, suggesting that nutritional signals are perceived at an early stage of epidermal cell development.
Different Plant Hormones Regulate Similar Processes through Largely Nonoverlapping Transcriptional Responses
Integration of Plant Responses to Environmentally Activated Phytohormonal Signals
TLDR
The nuclear-localized growth-repressing DELLA proteins of Arabidopsis integrate responses to independent hormonal and environmental signals of adverse conditions to permit flexible and appropriate modulation of plant growth in response to changes in natural environments.
TRIPTYCHON and CAPRICE mediate lateral inhibition during trichome and root hair patterning in Arabidopsis
TLDR
The same lateral inhibition mechanism seems to be involved in both de novo patterning and position‐dependent cell determination in the root epidermis, proposing a model explaining trichome and root hair patterning by a common mechanism.
COBRA encodes a putative GPI-anchored protein, which is polarly localized and necessary for oriented cell expansion in Arabidopsis.
TLDR
Mutations in the COBRA (COB) gene of Arabidopsis, known to affect the orientation of cell expansion in theroot, are reported here to reduce the amount of crystalline cellulose in cell walls in the root growth zone.
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