Os06g0717200
The rice gene Os06g0717200 was reported as fon1 in 2004[1] by researchers from Japan.
Contents
Annotated Information
Gene Symbol
- Os06g0717200 <=> fon1, OsRLCK219, RLCK219
Function
- FON1 gene encodes a leucine-rich repeat receptor-like kinase most similar to CLAVATA1 (CLV1) in Arabidopsis thaliana. This suggests that a pathway similar to the CLV signaling system that regulates meristem maintenance in Arabidopsis is conserved in the grass family.
- Unlike CLV1, which is predominantly expressed in the L3 layer of the shoot meristem, FON1 is expressed throughout the whole floral meristem, suggesting that small modifications to the CLV signaling pathway may be required to maintain the floral meristem in rice.
Mutation
- Mutations in the gene FLORAL ORGAN NUMBER1 (FON1) cause enlargement of the floral meristem in Oryza sativa (rice), resulting in an increase in the number of all floral organs. Ectopic floral organs develop in the whorl of each organ and/or in the additional whorls that form. Inner floral organs are more severely affected than outer floral organs. Many carpel primordia develop indeterminately, and undifferentiated meristematic tissues remain in the center in almost-mature flowers.
Expression
- FON1 is expressed in all of the meristems responsible for development of the aerial part of rice. FON1 transcripts were uniformly distributed throughout all types of meristem. This expression pattern differs from that of CLV1, which is mainly localized to L3 cells in Arabidopsis.
- In addition to the meristems, FON1 was also expressed in floral organ primordia, such as the palea, lemma, lodicules, stamens, carpels and ovules.
Evolution
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Labs working on this gene
- Graduate School of Agricultural and Life Sciences, University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
- Bioscience and Biotechnology Center, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan
- Japan Tobacco Incorporated, Aoba-ku, Yokohama 227-8512, Japan
- Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
References
- ↑ Suzaki T, Sato M, Ashikari M, Miyoshi M, Nagato Y, Hirano HY. The gene FLORAL ORGAN NUMBER1 regulates floral meristem size in rice and encodes a leucine-rich repeat receptor kinase orthologous to Arabidopsis CLAVATA1. Development. 2004 Nov;131(22):5649-57. PubMed PMID: 15509765.
