The FRUITFULL MADS-box gene mediates cell differentiation during Arabidopsis fruit development
Citations Over TimeTop 1% of 1998 papers
Abstract
Fruit morphogenesis is a process unique to flowering plants, and yet little is known about its developmental control. Following fertilization, fruits typically undergo a dramatic enlargement that is accompanied by differentiation of numerous distinct cell types. We have identified a mutation in Arabidopsis called fruitfull (ful-1), which abolishes elongation of the silique after fertilization. The ful-1 mutation is caused by the insertion of a DsE transposable enhancer trap element into the 5' untranslated leader of the AGL8 MADS-box gene. beta-glucuronidase (GUS) reporter gene expression in the enhancer trap line is observed specifically in all cell layers of the valve tissue, but not in the replum, the septum or the seeds, and faithfully mimics RNA in situ hybridization data reported previously. The lack of coordinated growth of the fruit tissues leads to crowded seeds, a failure of dehiscence and, frequently, the premature rupture of the carpel valves. The primary defect of ful-1 fruits is within the valves, whose cells fail to elongate and differentiate. Stomata, which are frequent along the epidermis of wild-type valves, are completely eliminated in the ful mutant valves. In addition to the effect on fruit development, ful cauline leaves are broader than those of wild type and show a reduction in the number of internal cell layers. These data suggest that AGL8/FUL regulates the transcription of genes required for cellular differentiation during fruit and leaf development.
Related Papers
- → Localization of sucrose synthase in developing seed and siliques of Arabidopsis thaliana reveals diverse roles for SUS during development(2008)112 cited
- → Modification of AtGRDP1 gene expression affects silique and seed development in Arabidopsis thaliana(2017)10 cited
- → Characteristics of a radish mutant with longer siliques(2022)1 cited
- → Characteristics of a Radish Mutant with Longer Siliques(2022)
- → A Novel Imaging Protocol for Investigating <em>Arabidopsis thaliana</em> Siliques and Seeds Using X-rays(2023)