Fasciation Mutation Enhances Meristematic Activity and Alters Pattern Formation in Soybean

Autor:	Halina T. Knap, Yuhong Tang
Rok vydání:	1998
Předmět:	fungi Mutant food and beverages Plant Science Biology Meristem Phyllotaxis biology.organism_classification Fasciation Axillary bud Arabidopsis Botany Plastochron Primordium Ecology Evolution Behavior and Systematics
Zdroj:	International Journal of Plant Sciences. 159:249-260
ISSN:	1537-5315 1058-5893
DOI:	10.1086/297546
Popis:	The recessive f mutation in soybean results in a ridgelike apical meristem that completely dominates plant ontogeny and causes virtually complete inhibition of leaf axillary buds and restriction of floral induction. For the first time, the process of formation of the ridgelike meristem (also the meristematic phenotype of CLAVATA1-1 and CLAVATA3-1 Arabidopsis mutants) is shown with scanning electron microscopy. Immediately after seed imbibition, the fasciation mutation was manifested by meristem enlargement and hastened differentiation of the second trifoliolate leaf primordium. The early meristematic phenotype of the mutant indicates that the f gene functions upstream of other developmental genes. Decussate and later semiwhorled leaf arrangements, combined with continuous meristem enlargement and shortened plastochron, replaced the wild-type distichous phyllotaxy. A dome-shaped meristem, the most energy-efficient configuration of the apical meristem, persisted during 11-12 plastochrons attaining a size fo...
Databáze:	OpenAIRE
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