Complex patterns of morphogenesis, embryology, and reproduction in Triuris brevistylis, a species of Triuridaceae (Pandanales) closely related to Lacandonia schismatica


Por: Espinosa-Matias, S, Vergara-Silva, F, Vazquez-Santana, S, Martinez-Zurita, E, Marquez-Guzman, J

Publicada: 1 nov 2012
Resumen:
Triuris brevistylis Donn. Sm. (Triuridaceae: Pandanales), a mycoheterotrophic monocotyledon with populations in Mexico and Guatemala, is closely related to Lacandonia schismatica E. Martinez et C. H. Ramos, a triurid species displaying a peculiar "inside-out" arrangement in its reproductive axes. Triuris brevistylis is a polygamodioecious species in which four types of bisexual ramets-genets coexist besides regular (i.e., unisexual) male and female flowers. Here, we characterize the embryology of three of the following different types of reproductive axes in T. brevistylis: male and female flowers and a bisexual floral type in which stamens develop at the base of the receptacle of an otherwise female-looking flower. Through this embryological characterization, we have detected that cleistogamy, a mechanism previously considered exclusive to L. schismatica, occurs in the bisexual flowers. Besides serving as characters for the systematics of Triuridaceae and Pandanales, our data establis

Filiaciones:
Espinosa-Matias, S:
 Univ Nacl Autonoma Mexico, Fac Ciencias, Lab Microscopia Elect Barrido, Mexico City 04510, DF, Mexico

Vergara-Silva, F:
 Univ Nacl Autonoma Mexico, Inst Biol, Lab Sistemat Mol Jardin Bot, Mexico City 04510, DF, Mexico

Vazquez-Santana, S:
 Univ Nacl Autonoma Mexico, Fac Ciencias, Lab Desarrollo Plantas, Mexico City 04510, DF, Mexico

Martinez-Zurita, E:
 Univ Nacl Autonoma Mexico, Fac Ciencias, Lab Microscopia Elect Barrido, Mexico City 04510, DF, Mexico

Marquez-Guzman, J:
 Univ Nacl Autonoma Mexico, Fac Ciencias, Lab Desarrollo Plantas, Mexico City 04510, DF, Mexico
ISSN: 19162790
Editorial
NATL RESEARCH COUNCIL CANADA-N R C RESEARCH PRESS, BUILDING M 55, OTTAWA, ON K1A 0R6, CANADA, Canada
Tipo de documento: Article
Volumen: 90 Número: 11
Páginas: 1133-1151
WOS Id: 000310788300008

MÉTRICAS