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Arabidopsis Floral Mutants: G to R

If you would like to add your favorite floral mutant to this page, please contact the Fletcher lab.
lfy-6
lfy-6
LEAFY: Affects floral meristem identity. Encodes a transcription factor (Weigel et al., Cell 1992). Ortholog of FLORICULA in Antirrhinum. Maps to the bottom of chr. 5.

lfy-6: Isolated by EMS in L-er. Isolation number S1339. Strong phenotype: early flowers converted to shoots, later flowers lack petals and stamens and have multiple whorls of sepals and carpels (Shultz and Haughn, 1991). Male sterile, often female fertile. Maintained as heterozygous stock. Lesion: gln32 to stop, same lesion as lfy-1 (Weigel et al., Cell 1992).

pan-1
pan-1
PERIANTHIA: Pentamerous floral organ arrangement - average 5 sepals, 5 petals, 5 stamens, 2 carpels — and organ initiation is regular. Encodes a bZIP transcription factor (Chuang et al, 1998). Maps to the bottom of chr. 1 near ap1.

pan-1 Isolated as a spontaneous (not tagged) mutation in Ws-2. Average about 5 sepals, petals and stamens, slight carpel defects. Slight semidominance: some flowers on heterozygous plants have 5 sepals. Male and female fertile. (Running and Meyerowitz, Development 1996). Lesion: frameshift in exon 4, before bZIP domain (Chuang et al, Genes & Dev. 1998).

ptl-1
ptl-1
PETAL LOSS: Has reduced petal number, sepal number normal in Col ecotype (Griffith et al., Development 1999). ptl L-er has 5-8 petals in early flowers, sepal number normal, due to a dominant modifier PMD. Maps to the top of chr. 5, 0.5 map units above tfl.

ptl-1: Isolated in Col. Severely reduced petal number; also in later flowers sepals are slightly carpelloid. When crossed to L-er, more than 4 petals seen in flowers. Male and female fertile (Griffith et al., Development 1999).

pin-5
pin-5
PINFORMED: Has increased sepal and petal number (often fused), reduced stamen number and mostly solitary carpels. The reduced SAM in strong alleles often forms a terminal pin (Okada et al., 1991). Encodes an auxin efflux carrier (Galweiler et al., Science 1998). Maps to chr. 1 about 0.2 map units below ap1.

pin-5: Isolated by EMS in L-er. Intermediate allele: inflorescences may form a pin structure, but others produce flowers (Bennett et al., Plant J. 1995).

pi-1
pi-1
PISTILLATA: Floral homeotic gene, phenotype similar in appearance to ap3. Encodes a MADS-box transcription factor (Goto and Meyerowitz, Genes & Dev. 1994). Ortholog of GLOBOSA in Antirrhinum. Maps to the top half of chr. 5.

pi-1: Isolated by EMS in L-er. Strongest allele: petals converted to sepals, third whorl organs absent or filamentous or occasionally fused to gynoecium. Male sterile, female fertile. Maintained as heterozygous stock (Koornneef et al, J. Hered. 1983; Bowman et al, Plant Cell 1989, Development 1991; Hill and Lord, Can. J. Bot. 1989). Lesion: Trp80 to stop (Goto and Meyerowitz, Genes & Dev 1994).

rev-1
rev-1
REVOLUTA: Affects many aspects of plant development . Allelic to INTERFASCICULAR FIBERLESS1 (Ratcliffe et al., Plant Cell 2000). Maps to chr. 5.

rev-1: Isolated by EMS in No-0. Downward turning leaves, narrow leaves, sometimes reduced floral organ number, reduced number of secondary branches, reduced ferility, reduced internode length (Talbert et al., Development 1995).


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