Data/hora: 24/06/2024 18:19:10

Biblioteca(s): | Embrapa Agricultura Digital.
Data corrente: | 10/12/2015
Data da última atualização: | 10/12/2015
Autoria: | DANTE, R. A.; LARKINS, B. A.; SABELLI, P. A.
Afiliação: | RICARDO AUGUSTO DANTE, CNPTIA; BRIAN A. LARKINS, University of Nebraska, University of Arizona; PAOLO A. SABELLI, University of Arizona.
Título: | Cell cycle control and seed development.
Ano de publicação: | 2014
Fonte/Imprenta: | Frontiers in Plant Science, v. 5, p. 1-14, Sept. 2014.
DOI: | http://dx.doi.org/10.3389/fpls.2014.00493
Idioma: | Inglês
Conteúdo: | Seed development is a complex process that requires coordinated integration of many genetic, metabolic, and physiological pathways and environmental cues. Different cell cycle types, such as asymmetric cell division, acytokinetic mitosis, mitotic cell division, and endoreduplication, frequently occur in sequential yet overlapping manner during the development of the embryo and the endosperm, seed structures that are both products of double fertilization. Asymmetric cell divisions in the embryo generate polarized daughter cells with different cell fates. While nuclear and cell division cycles play a key role in determining final seed cell numbers, endoreduplication is often associated with processes such as cell enlargement and accumulation of storage metabolites that underlie cell differentiation and growth of the different seed compartments. This review focuses on recent advances in our understanding of different cell cycle mechanisms operating during seed development and their impact on the growth, development, and function of seed tissues. Particularly, the roles of core cell cycle regulators, such as cyclindependent-kinases and their inhibitors, the Retinoblastoma-Related/E2F pathway and the proteasome-ubiquitin system, are discussed in the contexts of different cell cycle types that characterize seed development. The contributions of nuclear and cellular proliferative cycles and endoreduplication to cereal endosperm development are also discussed.
Palavras-Chave: | Ciclo celular; Desenvolvimento de semente; Endoreduplication; Retinoblastoma-related.
Thesagro: | Endosperma.
Thesaurus Nal: | Cell division; Cotyledons; cyclin-dependent kinase; Embryo (plant); Endopolyploidy; Endosperm; seed coat; Testa.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/135344/1/cell-cycle-Dante.pdf
Registro original: | Embrapa Agricultura Digital (CNPTIA)
Exemplares: | CNPTIA - (18526-1) - UPC - AP - DD -  -  -  - DIS