Abstract
Among the wild-type ecotypes of Arabidopsis thaliana whose shape of inflorescence is categorized as raceme, the ecotype Landsberg harboring the erecta (er) mutation shows a corymb-like inflorescence, namely, a compact inflorescence with a flattened arrangement of flower buds at the tip. The fact that the ER gene encodes a receptor-like protein kinase implies the presence of a signaling cascade responsible for the inflorescence morphology of flowering plants. We report here the characterization of another mutant with a corymb-like inflorescence, named corymbosa2 (crm2), and the isolation of the CRM2 gene. While the er mutation causes a severe reduction in the length of pedicels, the crm2 mutation results in a significant delay in the initiation of internode elongation and in the development of flowers, despite having little effect on the timing of floral induction. Consequently, the number of flower buds is apparently increased at the tip of crm2 inflorescence. The crm2 er double mutant shows an additive phenotype. These results suggest that CRM2 and ER may act in different ways to generate wild-type inflorescence. The CRM2 gene was isolated by positional cloning and appears to encode a polypeptide with no significant homology to known sequences.
| Original language | English |
|---|---|
| Pages (from-to) | 298-306 |
| Number of pages | 9 |
| Journal | Plant and Cell Physiology |
| Volume | 43 |
| Issue number | 3 |
| Publication status | Published - 2002 |
| Externally published | Yes |
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Keywords
- Arabidopsis thaliana
- Bolting
- Corymb-like inflorescence
- corymbosa2
- Flower development
- Inflorescence development
ASJC Scopus subject areas
- Plant Science
- Physiology
- Cell Biology
Cite this
Formation of corymb-like inflorescences due to delay in bolting and flower development in the corymbosa2 mutant of Arabidopsis. / Suzuki, Mitsuhiro; Takahashi, Taku; Komeda, Yoshibumi.
In: Plant and Cell Physiology, Vol. 43, No. 3, 2002, p. 298-306.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Formation of corymb-like inflorescences due to delay in bolting and flower development in the corymbosa2 mutant of Arabidopsis
AU - Suzuki, Mitsuhiro
AU - Takahashi, Taku
AU - Komeda, Yoshibumi
PY - 2002
Y1 - 2002
N2 - Among the wild-type ecotypes of Arabidopsis thaliana whose shape of inflorescence is categorized as raceme, the ecotype Landsberg harboring the erecta (er) mutation shows a corymb-like inflorescence, namely, a compact inflorescence with a flattened arrangement of flower buds at the tip. The fact that the ER gene encodes a receptor-like protein kinase implies the presence of a signaling cascade responsible for the inflorescence morphology of flowering plants. We report here the characterization of another mutant with a corymb-like inflorescence, named corymbosa2 (crm2), and the isolation of the CRM2 gene. While the er mutation causes a severe reduction in the length of pedicels, the crm2 mutation results in a significant delay in the initiation of internode elongation and in the development of flowers, despite having little effect on the timing of floral induction. Consequently, the number of flower buds is apparently increased at the tip of crm2 inflorescence. The crm2 er double mutant shows an additive phenotype. These results suggest that CRM2 and ER may act in different ways to generate wild-type inflorescence. The CRM2 gene was isolated by positional cloning and appears to encode a polypeptide with no significant homology to known sequences.
AB - Among the wild-type ecotypes of Arabidopsis thaliana whose shape of inflorescence is categorized as raceme, the ecotype Landsberg harboring the erecta (er) mutation shows a corymb-like inflorescence, namely, a compact inflorescence with a flattened arrangement of flower buds at the tip. The fact that the ER gene encodes a receptor-like protein kinase implies the presence of a signaling cascade responsible for the inflorescence morphology of flowering plants. We report here the characterization of another mutant with a corymb-like inflorescence, named corymbosa2 (crm2), and the isolation of the CRM2 gene. While the er mutation causes a severe reduction in the length of pedicels, the crm2 mutation results in a significant delay in the initiation of internode elongation and in the development of flowers, despite having little effect on the timing of floral induction. Consequently, the number of flower buds is apparently increased at the tip of crm2 inflorescence. The crm2 er double mutant shows an additive phenotype. These results suggest that CRM2 and ER may act in different ways to generate wild-type inflorescence. The CRM2 gene was isolated by positional cloning and appears to encode a polypeptide with no significant homology to known sequences.
KW - Arabidopsis thaliana
KW - Bolting
KW - Corymb-like inflorescence
KW - corymbosa2
KW - Flower development
KW - Inflorescence development
UR - http://www.scopus.com/inward/record.url?scp=0036010192&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036010192&partnerID=8YFLogxK
M3 - Article
VL - 43
SP - 298
EP - 306
JO - Plant and Cell Physiology
JF - Plant and Cell Physiology
SN - 0032-0781
IS - 3
ER -