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標題: FLD interacts with genes that affect different developmental phase transitions to regulate Arabidopsis shoot development
作者: Chou, M.L.
Yang, C.H.
關鍵字: late-flowering mutants;polymorphism linkage map;floral meristem;identity;thaliana;initiation;time;vernalization;plants;length;mutations
Project: Plant Journal
期刊/報告no:: Plant Journal, Volume 15, Issue 2, Page(s) 231-242.
A new fld mutant allele, fld-2, which significantly delayed flowering, was isolated and characterized in Arabidopsis thaliana. Even under long-day conditions after more than 100 days in the greenhouse, the majority of fld-2 mutant plants had not bolted. In addition, mutant inflorescences produced more than 10 co-florescences that were subtended by a high number of rosette-like leaves before giving rise to flowers. The late-flowering phenotype of the fld-2 mutation could be partially overcome by both vernalization and GA treatment but it was not influenced by 5-azaC treatment. Phenotypic analyses of double mutants indicated that fld-2 is epistatic to early flowering mutants elf1, elf2 and elf3. In addition, fld-2 could enhance vegetative characteristics in embryonic flower 1 (emf1) mutants by causing many small sessile leaves in fld-2 emf1 double mutants. The relief of the terminal flower 1 (fl1) mutant phenotype in fld-2 tfl1 double mutants, and the enhancement of leafy (Ify) and apefala1 (ap1) mutant phenotypes in fld-2 Ify and fld-2 ap1 double mutants, suggest that FLD is also likely to be involved in the floral transition. Our results strongly suggest that the FLD gene plays a key role in regulating the reproductive competence of the shoot and results in different developmental phase transitions in Arabidopsis.
ISSN: 0960-7412
DOI: 10.1046/j.1365-313X.1998.00204.x
Appears in Collections:生物科技學研究所

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