LEUNIG regulates AGAMOUS expression in Arabidopsis flowers
نویسندگان
چکیده
منابع مشابه
LEUNIG, a putative transcriptional corepressor that regulates AGAMOUS expression during flower development.
Regulation of homeotic gene expression is critical for proper developmental patterns in both animals and plants. LEUNIG is a key regulator of the Arabidopsis floral homeotic gene AGAMOUS. Mutations in LEUNIG cause ectopic AGAMOUS mRNA expression in the outer two whorls of a flower, leading to homeotic transformations of floral organ identity as well as loss of floral organs. We isolated the LEU...
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Central to the ABCE model of flower development is the antagonistic interaction between class A and class C genes. The molecular mechanisms underlying the A-C antagonism are not completely understood. In Arabidopsis thaliana, miR172 is expressed in the inner floral whorls where it downregulates the class A gene APETALA 2 (AP2). However, what controls this predominantly inner whorl-specific expr...
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Cyclamen persicum (cyclamen) is a commercially valuable, winter-blooming perennial plant. We cloned two cyclamen orthologues of AGAMOUS (AG), CpAG1 and CpAG2, which are mainly expressed in the stamen and carpel, respectively. Cyclamen flowers have 5 petals, but expression of a chimeric repressor of CpAG1 (CpAG1-SRDX) caused stamens to convert into petals, resulting in a flower with 10 petals. B...
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The signal that initiates the age-regulated senescence program in flowers is still unknown. Here we propose for the ephemeral Arabidopsis thaliana flower that it dies because of continued expression of the MADS-box transcription factor AGAMOUS (AG). AG is necessary for specifying the reproductive structures of the flower. Flowers of ag-1, which lack AG, exhibited delayed sepal senescence and ab...
متن کاملExpression of multiple AGAMOUS-like genes in male and female flowers of cucumber (Cucumis sativus L.).
Members of the MADS-box gene family control reproductive development in higher plants. In cucumber, floral development exhibits several interesting features related to a genetically determined sex-expression mechanism, that affects the differentiation of male and female flowers. In this study, three cDNA homologues of the homeotic gene AGAMOUS have been cloned from early-stage floral buds of Cu...
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ژورنال
عنوان ژورنال: Development
سال: 1995
ISSN: 1477-9129,0950-1991
DOI: 10.1242/dev.121.4.975