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Induction of epidermal cell fate in Arabidopsis shoots.
- Source :
-
Plant signaling & behavior [Plant Signal Behav] 2013 Nov; Vol. 8 (11), pp. e26236. Date of Electronic Publication: 2013 Aug 29. - Publication Year :
- 2013
-
Abstract
- Land plants have evolved a cuticle-bearing epidermis to protect themselves from environmental stress and pathogen attack. Despite its important role, little is known about the molecular mechanisms regulating shoot epidermal cell identity. In a recent study, we found that the Arabidopsis thaliana ATML1 gene is possibly a master regulator of shoot epidermal cell fate. We revealed that ATML1 has the ability to confer shoot epidermis-related traits to non-epidermal cells of the seedlings. These data are consistent with the previous loss-of-function mutant analyses, which implied a positive role of ATML1 in epidermal cell differentiation. Importantly, ectopic epidermal cells induced in ATML1-overexpressing lines provide a novel tool to assess the intrinsic properties of epidermal cells and to study epistatic interactions among genes involved in epidermal/mesophyll differentiation. Using this system, we obtained data revealing that ATML1 negatively influenced mesophyll cell fate. In addition, we provided a working model of how division planes in epidermal cells are determined.
Details
- Language :
- English
- ISSN :
- 1559-2324
- Volume :
- 8
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- Plant signaling & behavior
- Publication Type :
- Academic Journal
- Accession number :
- 23989220
- Full Text :
- https://doi.org/10.4161/psb.26236