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- ABC_model_of_flower_development abstract "Flower development is the process by which angiosperms produce a pattern of gene expression in meristems that leads to the appearance of an organ oriented towards sexual reproduction, a flower. There are three physiological developments that must occur in order for this to take place: firstly, the plant must pass from sexual immaturity into a sexually mature state (i.e. a transition towards flowering); secondly, the transformation of the apical meristem’s function from a vegetative meristem into a floral meristem or inflorescence; and finally the growth of the flower’s individual organs. The latter phase has been modelled using the ABC model, which endeavours to describe the biological basis of the process from the perspective of molecular and developmental genetics.An external stimulus is required in order to trigger the differentiation of the meristem into a flower. This stimulus will activate mitotic cell division in the meristem, particularly on its sides where new primordia are formed. This same stimulus will also cause the meristem to follow a developmental pattern that will lead to the growth of floral meristems as opposed to vegetative meristems. The main difference between these two types of meristem, apart from the obvious disparity between the objective organ, is the verticillate (or whorled) phyllotaxis, that is, the absence of stem elongation among the successive whorls or verticils of the primordium. These verticils follow an acropetal development, giving rise to sepals, petals, stamens and carpels. Another difference from vegetative axillary meristems is that the floral meristem is «determined», which means that, once differentiated, its cells will no longer divide.The identity of the organs present in the four floral verticils is a consequence of the interaction of at least three types of gene products, each with distinct functions. According to the ABC model, functions A and C are required in order to determine the identity of the verticils of the perianth and the reproductive verticils, respectively. These functions are exclusive and the absence of one of them means that the other will determine the identity of all the floral verticils. The B function allows the differentiation of petals from sepals in the secondary verticil, as well as the differentiation of the stamen from the carpel on the tertiary verticil.Goethe’s «foliar theory» was formulated in the 18th century and it suggests that the constituent parts of a flower are structurally modified leaves, which are functionally specialized for reproduction or protection. The theory was first published in 1790 in the essay \"Metamorphosis of Plants\" (\"Versuch die Metamorphose der Pflanzen zu erklaren\"). where Goethe wrote:\"...we may equally well say that a stamen is a contracted petal, as that a petal is a stamen in a state of expansion; or that a sepal is a contracted stem leaf approaching a certain stage of refinement, as that a stem leaf is a sepal expanded by the influx of cruder saps\".".
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- ABC_model_of_flower_development wikiPageExternalLink Chapter_12C.html.
- ABC_model_of_flower_development wikiPageExternalLink flower3.htm.
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- ABC_model_of_flower_development wikiPageRevisionID "677429218".
- ABC_model_of_flower_development wikiPageWikiLink Agapanthus.
- ABC_model_of_flower_development wikiPageWikiLink Allele.
- ABC_model_of_flower_development wikiPageWikiLink Amino_acid.
- ABC_model_of_flower_development wikiPageWikiLink Antirrhinum.
- ABC_model_of_flower_development wikiPageWikiLink Arabidopsis_thaliana.
- ABC_model_of_flower_development wikiPageWikiLink Asterids.
- ABC_model_of_flower_development wikiPageWikiLink Biomass.
- ABC_model_of_flower_development wikiPageWikiLink Cadastral_genes.
- ABC_model_of_flower_development wikiPageWikiLink Category:Plant_morphology.
- ABC_model_of_flower_development wikiPageWikiLink Cell_(biology).
- ABC_model_of_flower_development wikiPageWikiLink Cell_cycle.
- ABC_model_of_flower_development wikiPageWikiLink Cell_differenciation.
- ABC_model_of_flower_development wikiPageWikiLink Cell_division.
- ABC_model_of_flower_development wikiPageWikiLink Cell_fate_determination.
- ABC_model_of_flower_development wikiPageWikiLink Cellular_differentiation.
- ABC_model_of_flower_development wikiPageWikiLink Cloning.
- ABC_model_of_flower_development wikiPageWikiLink DNA.
- ABC_model_of_flower_development wikiPageWikiLink Developmental_biology.
- ABC_model_of_flower_development wikiPageWikiLink Dicotyledon.
- ABC_model_of_flower_development wikiPageWikiLink Dimer_(chemistry).
- ABC_model_of_flower_development wikiPageWikiLink Drosophila.
- ABC_model_of_flower_development wikiPageWikiLink Feedback.
- ABC_model_of_flower_development wikiPageWikiLink Flower.
- ABC_model_of_flower_development wikiPageWikiLink Flowering_plant.
- ABC_model_of_flower_development wikiPageWikiLink Forward_genetics.
- ABC_model_of_flower_development wikiPageWikiLink Gene_expression.
- ABC_model_of_flower_development wikiPageWikiLink Gene_product.
- ABC_model_of_flower_development wikiPageWikiLink Gene_products.
- ABC_model_of_flower_development wikiPageWikiLink Gene_silencing.
- ABC_model_of_flower_development wikiPageWikiLink Genetic_linkage.
- ABC_model_of_flower_development wikiPageWikiLink Gibberellin.
- ABC_model_of_flower_development wikiPageWikiLink Gynoecium.
- ABC_model_of_flower_development wikiPageWikiLink Homeotic_gene.
- ABC_model_of_flower_development wikiPageWikiLink Homology_(biology).
- ABC_model_of_flower_development wikiPageWikiLink Hox_gene.
- ABC_model_of_flower_development wikiPageWikiLink In_situ_hybridization.
- ABC_model_of_flower_development wikiPageWikiLink Inflorescence.
- ABC_model_of_flower_development wikiPageWikiLink Johann_Wolfgang_von_Goethe.
- ABC_model_of_flower_development wikiPageWikiLink Kinship.
- ABC_model_of_flower_development wikiPageWikiLink Leaf.
- ABC_model_of_flower_development wikiPageWikiLink Liliaceae.
- ABC_model_of_flower_development wikiPageWikiLink MADS-box.
- ABC_model_of_flower_development wikiPageWikiLink Maize.
- ABC_model_of_flower_development wikiPageWikiLink Meristem.
- ABC_model_of_flower_development wikiPageWikiLink Mitosis.
- ABC_model_of_flower_development wikiPageWikiLink Molecular_biology.
- ABC_model_of_flower_development wikiPageWikiLink Molecular_genetics.
- ABC_model_of_flower_development wikiPageWikiLink Monocotyledon.
- ABC_model_of_flower_development wikiPageWikiLink Morphogenesis.
- ABC_model_of_flower_development wikiPageWikiLink Morphology_(biology).
- ABC_model_of_flower_development wikiPageWikiLink Mutation.
- ABC_model_of_flower_development wikiPageWikiLink Negative_feedback.
- ABC_model_of_flower_development wikiPageWikiLink Null_allele.
- ABC_model_of_flower_development wikiPageWikiLink Open_reading_frame.
- ABC_model_of_flower_development wikiPageWikiLink Ovule.
- ABC_model_of_flower_development wikiPageWikiLink Perianth.
- ABC_model_of_flower_development wikiPageWikiLink Petal.
- ABC_model_of_flower_development wikiPageWikiLink Phenotype.
- ABC_model_of_flower_development wikiPageWikiLink Photoperiodism.
- ABC_model_of_flower_development wikiPageWikiLink Phyllotaxis.
- ABC_model_of_flower_development wikiPageWikiLink Phylogenetics.
- ABC_model_of_flower_development wikiPageWikiLink Physiology.
- ABC_model_of_flower_development wikiPageWikiLink Plant_evolutionary_developmental_biology.
- ABC_model_of_flower_development wikiPageWikiLink Plant_hormone.
- ABC_model_of_flower_development wikiPageWikiLink Plant_stem.
- ABC_model_of_flower_development wikiPageWikiLink Pollen.
- ABC_model_of_flower_development wikiPageWikiLink Post-transcriptional_regulation.
- ABC_model_of_flower_development wikiPageWikiLink Primordium.
- ABC_model_of_flower_development wikiPageWikiLink RNA_interference.
- ABC_model_of_flower_development wikiPageWikiLink Regulation_of_gene_expression.
- ABC_model_of_flower_development wikiPageWikiLink Reproductive_phase.
- ABC_model_of_flower_development wikiPageWikiLink Reverse_genetics.
- ABC_model_of_flower_development wikiPageWikiLink Rosids.
- ABC_model_of_flower_development wikiPageWikiLink Scientific_modelling.
- ABC_model_of_flower_development wikiPageWikiLink Seed.
- ABC_model_of_flower_development wikiPageWikiLink Sepal.
- ABC_model_of_flower_development wikiPageWikiLink Serial_analysis_of_gene_expression.
- ABC_model_of_flower_development wikiPageWikiLink Sexual_reproduction.
- ABC_model_of_flower_development wikiPageWikiLink Signal_transduction.
- ABC_model_of_flower_development wikiPageWikiLink Stamen.
- ABC_model_of_flower_development wikiPageWikiLink Stem_cell.
- ABC_model_of_flower_development wikiPageWikiLink Stimulus_(physiology).
- ABC_model_of_flower_development wikiPageWikiLink Superman_(gene).
- ABC_model_of_flower_development wikiPageWikiLink Tepal.
- ABC_model_of_flower_development wikiPageWikiLink Tomato.
- ABC_model_of_flower_development wikiPageWikiLink Transcription_factor.
- ABC_model_of_flower_development wikiPageWikiLink Tulip.
- ABC_model_of_flower_development wikiPageWikiLink Vegetative_phase_change.
- ABC_model_of_flower_development wikiPageWikiLink Vernalization.
- ABC_model_of_flower_development wikiPageWikiLink Whorl_(botany).
- ABC_model_of_flower_development wikiPageWikiLink Yeast.
- ABC_model_of_flower_development wikiPageWikiLink File:ABC_flower_developement.jpg.