Flower development in the organ number mutant clavata1-1 of Arabidopsis thaliana (Brassicaceae)

1993 ◽  
Vol 80 (12) ◽  
pp. 1419-1426 ◽  
Author(s):  
Wilson Crone ◽  
Elizabeth M. Lord
Keyword(s):  
Arabidopsis Thaliana ◽  
Flower Development

The members of Arabidopsis thaliana PAO gene family exhibit distinct tissue- and organ-specific expression pattern during seedling growth and flower development

Amino Acids ◽  
2011 ◽  
Vol 42 (2-3) ◽  
pp. 831-841 ◽  
Author(s):  
Paola Fincato ◽  
Panagiotis N. Moschou ◽  
Abdellah Ahou ◽  
Riccardo Angelini ◽  
Kalliopi A. Roubelakis-Angelakis ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Gene Family ◽  
Expression Pattern ◽  
Seedling Growth ◽  
Flower Development ◽  
Specific Expression ◽  
Organ Specific ◽  
Organ Specific Expression ◽  
Specific Expression Pattern

scholarly journals Control of flower development in Arabidopsis thaliana by APETALA1 and interacting genes

Development ◽  
1993 ◽  
Vol 119 (3) ◽  
pp. 721-743 ◽  
Author(s):  
J. L. Bowman ◽  
J. Alvarez ◽  
D. Weigel ◽  
E. M. Meyerowitz ◽  
D. R. Smyth
Keyword(s):  
Arabidopsis Thaliana ◽  
In Situ Hybridization ◽  
Flower Development ◽  
Floral Organ ◽  
Allelic Series ◽  
Flower Meristem ◽  
Petal Development ◽  
Two Phases ◽  
Floral Organ Specification

Mutations in the APETALA1 gene disturb two phases of flower development, flower meristem specification and floral organ specification. These effects become manifest as a partial conversion of flowers into inflorescence shoots and a disruption of sepal and petal development. We describe the changes in an allelic series of nine apetala1 mutants and show that the two functions of APETALA1 are separable. We have also studied the interaction between APETALA1 and other floral genes by examining the phenotypes of multiply mutant plants and by in situ hybridization using probes for several floral control genes. The results suggest that the products of APETALA1 and another gene, LEAFY, are required to ensure that primordia arising on the flanks of the inflorescence apex adopt a floral fate, as opposed to becoming an inflorescence shoot. APETALA1 and LEAFY have distinct as well as overlapping functions and they appear to reinforce each other's action. CAULIFLOWER is a newly discovered gene which positively regulates both APETALA1 and LEAFY expression. All functions of CAULIFLOWER are redundant with those of APETALA1. APETALA2 also has an early function in reinforcing the action of APETALA1 and LEAFY, especially if the activity of either is compromised by mutation. After the identity of a flower primordium is specified, APETALA1 interacts with APETALA2 in controlling the development of the outer two whorls of floral organs.

scholarly journals An Arabidopsis thaliana (Ler) inbred line AFDL exhibiting abnormal flower development mainly caused by reduced AP1 expression

2010 ◽  
Vol 56 (1) ◽  
pp. 39-47 ◽  
Author(s):  
XiaoLi Qi ◽  
Yao Jiang ◽  
Fang Tang ◽  
MinJie Wang ◽  
JianJun Hu ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Inbred Line ◽  
Flower Development ◽  
Abnormal Flower

Isolation and characterization of novel mutants of Arabidopsis thaliana defective in flower development

Development ◽  
1988 ◽  
Vol 104 (2) ◽  
pp. 195-203 ◽  
Author(s):  
M.K. Komaki ◽  
K. Okada ◽  
E. Nishino ◽  
Y. Shimura
Keyword(s):  
Arabidopsis Thaliana ◽  
Genetic Control ◽  
Flower Development ◽  
Higher Plant ◽  
Genetic Analyses ◽  
Floral Organs ◽  
Isolation And Characterization ◽  
Homeotic Conversion

We have isolated a number of mutants of Arabidopsis thaliana, a member of the mustard family, that have defects in flower development and morphogenesis. Of these, five mutants have been extensively characterized. Two mutants (Fl-40, Fl- 48) lacking petals show homeotic conversion of sepals to carpels. One mutant (Fl-54) displays highly variable phenotypes, including several types of homeotic variations, loss or distorted positions of the floral organs as well as abnormal structures on the inflorescence. Two other mutants (Fl-82, Fl-89) show aberrant structures in the pistils. Genetic analyses have revealed that these mutations are single and recessive, except for one mutant whose mutational loci still remain to be determined. These mutants may prove useful for the analysis of the genetic control of flower development and morphogenesis in the higher plant.

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