Development and evolution of the unique ovules of flowering plants.
Curr Top Dev Biol
; 131: 373-399, 2019.
Article
en En
| MEDLINE
| ID: mdl-30612624
ABSTRACT
Ovules are the precursors to seeds and as such are critical to plant propagation and food production. Mutant studies have led to the identification of numerous genes regulating ovule development. Genes encoding transcription factors have been shown to direct ovule spacing, ovule identity and integument formation. Particular co-regulators have now been associated with activities of some of these transcription factors, and other protein families including cell surface receptors have been shown to regulate ovule development. Hormone levels and transport, especially of auxin, have also been shown to play critical roles in ovule emergence and morphogenesis and to interact with the transcriptional regulators. Ovule diversification has been studied using orthologs of regulatory genes in divergent angiosperm groups. Combining modern genetic evidence with expanding knowledge of the fossil record illuminates the possible origin of the unique bitegmic ovules of angiosperms.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Proteínas de Plantas
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Regulación de la Expresión Génica de las Plantas
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Regulación del Desarrollo de la Expresión Génica
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Magnoliopsida
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Evolución Biológica
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Óvulo Vegetal
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Curr Top Dev Biol
Año:
2019
Tipo del documento:
Article