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The FUS3 transcription factor functions through the epidermal regulator TTG1 during embryogenesis in Arabidopsis.
- Source :
-
The Plant journal : for cell and molecular biology [Plant J] 2004 Jan; Vol. 37 (1), pp. 73-81. - Publication Year :
- 2004
-
Abstract
- Loss-of-function mutations in the FUSCA3 (FUS3) gene of Arabidopsis result in alterations in cotyledon identity, inability to complete late seed maturation processes, and the premature activation of apical and root embryonic meristems, which indicates that this transcription factor is an essential regulator of embryogenesis. Although FUS3 shows a complex pattern of expression in the embryo, this gene is only required in the protoderm to carry out its functions. Moreover, the epidermal morphogenesis regulator TRANSPARENT TESTA GLABRA1 (TTG1) is negatively regulated by FUS3 in the embryo. When a loss-of-function ttg1 mutation is introduced into a fus3 mutant, a number of fus3-related phenotypes are rescued, indicating a functional TTG1 gene is required to manifest the fus3 mutant phenotype. It therefore appears that one of the functions of FUS3 is to restrict the domain of expression of TTG1 during embryogenesis. The FUS3-TTG1 interaction is both maternal and zygotic, suggesting a complex relationship is required between these gene products to allow correct seed development.
- Subjects :
- Anthocyanins biosynthesis
Arabidopsis embryology
Arabidopsis metabolism
Arabidopsis Proteins metabolism
Cell Surface Extensions genetics
Cell Surface Extensions metabolism
Gene Expression Regulation, Developmental
Gene Expression Regulation, Plant
Homeodomain Proteins genetics
Homeodomain Proteins metabolism
Mutation
Phenotype
Plant Epidermis genetics
Plant Epidermis metabolism
Protein Interaction Mapping
Seeds growth & development
Seeds metabolism
Transcription Factors physiology
Arabidopsis genetics
Arabidopsis Proteins genetics
Seeds genetics
Transcription Factors genetics
Subjects
Details
- Language :
- English
- ISSN :
- 0960-7412
- Volume :
- 37
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- The Plant journal : for cell and molecular biology
- Publication Type :
- Academic Journal
- Accession number :
- 14675433
- Full Text :
- https://doi.org/10.1046/j.1365-313x.2003.01939.x