38 - flowering - arabidopsis genetics

38 - flowering - arabidopsis genetics - Developmental...

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Developmental Genetics of Plant Flowering
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Basic Plant Structure Higher plants are made of repeated units, much as animals are made of segments. Each unit is made up of a node and an internode . A node consists of either a leaf or a flower part and a small bit of undifferentiated tissue – axillary meristem (bud) . The internode is the stem. These structures are generated from undifferentiated cells in the apical meristem .
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Flower structure
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Plant Homeotic Genes ± The MADS box - a highly conserved sequence motif found in a family of transcription factors ± MADS – an acronym for the DNA-binding domain of a gene family that is derived from the initials of the founding members MCM1, AGAMOUS, DEFICIENS and SRF, in yeast, Arabidopsis, Antirrhinum and humans, respectively ± More than a hundred MADS box sequences have been found in species from all eukaryotic kingdoms. Most MADS domain factors play important roles in developmental processes. The MADS box genes in flowering plants are the "molecular architects" of flower morphogenesis DNA-binding domain
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38 - flowering - arabidopsis genetics - Developmental...

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