Ultrastructural study of pollen and anther development in Luehea divaricata [Malvaceae, Grewioideae] and its systematic implications role of tapetal transfer cells, orbicules and male germ unit
Developmental processes of microsporogenesis and microgametogenesis in Luehea divaricata [Malvaceae, Grewioideae] were analyzed with transmission electron microscopy. The species studied has perfect flowers. The young anthers are bithecal and tetrasporangiate; microspore mother cells undergo simulta...
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| Otros Autores: | , |
| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2012Lattar2.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 999 | |c 46744 |d 46744 | ||
| 999 | |d 46744 | ||
| 022 | |a 0367-2530 | ||
| 024 | |a 10.1016/j.flora.2012.10.005 | ||
| 040 | |a AR-BaUFA |c AR-BaUFA | ||
| 100 | 1 | |a Lattar, Elsa Clorinda |9 66949 | |
| 245 | 0 | 0 | |a Ultrastructural study of pollen and anther development in Luehea divaricata [Malvaceae, Grewioideae] and its systematic implications |b role of tapetal transfer cells, orbicules and male germ unit |
| 520 | |a Developmental processes of microsporogenesis and microgametogenesis in Luehea divaricata [Malvaceae, Grewioideae] were analyzed with transmission electron microscopy. The species studied has perfect flowers. The young anthers are bithecal and tetrasporangiate; microspore mother cells undergo simultaneous meiosis, forming tetrads with a tetrahedral arrangement. The development of the anther wall conforms to the basic type and the tapetum is secretory. The results highlight the presence of multinucleate tapetal cells, which acquire ultrastructural features characteristic of transfer cells at the young pollen grain stage, and which are associated with the presence of orbicules. Tapetal transfer cells have not been previously investigated in detail for other species of angiosperms; their function during pollen development is discussed. The present work is the first contribution to the knowledge of ultrastructural pollen development in the genus Luehea, as well as in the subfamily Grewioideae. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | 0 | |a GREWIOIDEAE | |
| 653 | 0 | |a LUEHEA DIVARICATA | |
| 653 | 0 | |a MALE GERM UNIT | |
| 653 | 0 | |a MALVACEAE | |
| 653 | 0 | |a ORBICULES | |
| 653 | 0 | |a TRANSFER CELLS, SECRETORY TAPETUM | |
| 653 | 0 | |a DICOTYLEDON | |
| 653 | 0 | |a FLOWER | |
| 653 | 0 | |a GAMETOGENESIS | |
| 653 | 0 | |a GERM CELL | |
| 653 | 0 | |a POLLEN | |
| 653 | 0 | |a TRANSMISSION ELECTRON MICROSCOPY | |
| 653 | 0 | |a ULTRASTRUCTURE | |
| 653 | 0 | |a GREWIOIDEAE | |
| 653 | 0 | |a LUEHEA | |
| 653 | 0 | |a MAGNOLIOPHYTA | |
| 700 | 1 | |9 37472 |a Galati, Beatriz Gloria | |
| 700 | 1 | |9 66950 |a Ferrucci, María Silvia | |
| 773 | |t Flora : Morphology, Distribution, Functional Ecology of Plants |g Vol.207, no.12 (2012), p.888-894 | ||
| 856 | |u http://ri.agro.uba.ar/files/intranet/articulo/2012Lattar2.pdf |i En reservorio |q application/pdf |f 2012Lattar2 |x MIGRADOS2018 | ||
| 856 | |u http://www.elsevier.com/ |x MIGRADOS2018 |z LINK AL EDITOR | ||
| 942 | 0 | 0 | |c ARTICULO |
| 942 | 0 | 0 | |c ENLINEA |
| 976 | |a AAG | ||