Global Identification of DELLA Target Genes during Arabidopsis Flower Development
نویسندگان
چکیده
منابع مشابه
Global identification of DELLA target genes during Arabidopsis flower development.
Gibberellin (GA) plays important roles in regulating many aspects of plant development. GA derepresses its signaling pathway by promoting the degradation of DELLA proteins, a family of nuclear growth repressors. Although the floral organ identity is established in flowers of the GA-deficient mutant ga1-3, the growth of all floral organs is severely retarded. In particular, abortive anther devel...
متن کاملGenes directing flower development in Arabidopsis.
We describe the effects of four recessive homeotic mutations that specifically disrupt the development of flowers in Arabidopsis thaliana. Each of the recessive mutations affects the outcome of organ development, but not the location of organ primordia. Homeotic transformations observed are as follows. In agamous-1, stamens to petals; in apetala2-1, sepals to leaves and petals to staminoid peta...
متن کاملRegulation of Arabidopsis flower development.
Plant development is governed by intrinsic and environmental factors that regulate the identity and activity of meristems, organized tissues of pluripotent "stem" cells, that together determine plant form and architecture. However, little is known about how these factors act at the molecular leve1 to affect meristem identity and function. Genetic studies in Arabidopsis and other plant species s...
متن کاملEarly flower development in Arabidopsis.
The early development of the flower of Arabidopsis thaliana is described from initiation until the opening of the bud. The morphogenesis, growth rate, and surface structure of floral organs were recorded in detail using scanning electron microscopy. Flower development has been divided into 12 stages using a series of landmark events. Stage 1 begins with the initiation of a floral buttress on th...
متن کاملTSO1 functions in cell division during Arabidopsis flower development.
We describe an Arabidopsis mutant, tso1, which develops callus-like tissues in place of floral organs. The tso1 floral meristem lacks properly organized three cell layers, and the nuclei of these cells are irregular in size and shape. Further analyses reveal partially formed cell walls and increased DNA ploidy in tso1 floral meristem cells, indicating defects in mitosis and cytokinesis. Our fin...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 2008
ISSN: 1532-2548
DOI: 10.1104/pp.108.121301