Flower fasciation: I. Origin of enlarged meristem

Sinyushin, A. A.

doi:10.3103/s009639251003003x

Cited by 6 publications

(2 citation statements)

References 14 publications

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“…It should be noted that the whole complex of abnormalities of flower structure in fasciated pea lines cannot be interpreted as flower fasciation. As it had been demonstrated in earlier work (Sinyushin 2010), fasciated flowers of different species are characterized by progressive increase of organ number in every whorl as compared with normal flower. Most flowers of fasciated pea individuals are normal, while terminal ones develop with even less organ number than lateral.…”

Section: Specificity Of Terminal Flower Developmentmentioning

confidence: 53%

On the role of genes determinate, late flowering and fasciata in the morphogenesis of pea inflorescence

Sinjushin¹

2011

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The effects of mutations determinate (det), late flowering (lf), fasciata (fa, fas), and nodulation4 (nod4) on development of inflorescence in pea were characterized. All listed mutations distort functions of stem apical meristem and influence development of axillary flower-bearing axis (short paracladium) leading to formation of terminal flower and bracts. Structure of flower terminating short paracladium was analyzed and hypothesis on origin of its structure was proposed. Scheme of genetic network in control of inflorescence development in pea was designed.

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Section: Specificity Of Terminal Flower Developmentmentioning

confidence: 53%

On the role of genes determinate, late flowering and fasciata in the morphogenesis of pea inflorescence

Sinjushin¹

2011

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“…Endress () explained such deviations in gynoecium symmetry by the impossibility of precise meeting of all the carpels in the floral centre as a result of space limitaion (at least in the uppermost part of the syncarpous zone) on one hand and the necessity for compitum development on the other hand; nonpolysymmetric carpel arrangement along the unspent floral apex also allows the maintenance of a moderate size of a flower with numerous carpels. Elliptic shape is also known to be a common feature for fasciated axial structures in plants (Sokoloff et al ., ; Sinyushin, ; Choob & Sinyushin, ). Furthermore, abnormal polymerous flowers of Asian Schefflera spp.…”

Section: Discussionmentioning

confidence: 99%

Flower morphology and relationships ofSchefflera subintegra(Araliaceae, Apiales): an evolutionary step towards extreme floral polymery

et al. 2014

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Gross morphology and the development of flowers in Schefflera subintegra (Araliaceae) are examined. The floral groundplan of this species is found to be very similar to that of Tupidanthus calyptratus representing a case of most extreme floral polymery within Araliaceae. Schefflera subintegra differs from T. calyptratus with respect to a lower floral merism (19-43 versus 60-172 stamens and 15-33 versus 60-138 carpels respectively) and by transformation from polysymmetry to disymmetry of flower in the course of its development. Close relationships between S. subintegra, T. calyptratus, and Schefflera hemiepiphytica have been confirmed by phylogenetic analysis based on nuclear ribosomal internal transcribed spacer sequences. These species form a subclade within the Asian Schefflera clade, with T. calyptratus as a sister taxon to two other species. Apart from more or less pronounced floral polymery, the species of this subclade share calyx and corolla without any traits of individual sepals and petals, and also a massive calyptra. As these data suggest, the extremely polymerous flowers of Tupidanthus apparently evolved in two steps: (1) the saltational multiplication of floral elements together with a loss of individuality of sepals in the calyx and petals in the corolla and (2) further polymerization of androecium and gynoecium. Mutation(s) in CLAVATA-like gene(s) are suggested as a possible mechanism of the saltation event.

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Cytogenomics and Mutagenomics in Plant Functional Biology and Breeding

Talukdar

Sinjushin

2015

PlantOmics: The Omics of Plant Science

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Flower fasciation: I. Origin of enlarged meristem

Cited by 6 publications

References 14 publications

On the role of genes determinate, late flowering and fasciata in the morphogenesis of pea inflorescence

On the role of genes determinate, late flowering and fasciata in the morphogenesis of pea inflorescence

Flower morphology and relationships ofSchefflera subintegra(Araliaceae, Apiales): an evolutionary step towards extreme floral polymery

Cytogenomics and Mutagenomics in Plant Functional Biology and Breeding

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