Open AccessVariations in the microsporogenesis of monosulcate palm pollen
Author(s) -
SANNIER JULIE,
NADOT SOPHIE,
FORCHIONI ARLETTE,
HARLEY MADELINE,
ALBERT BEATRICE
Publication year - 2006
Publication title -
botanical journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.872
H-Index - 68
eISSN - 1095-8339
pISSN - 0024-4074
DOI - 10.1111/j.1095-8339.2006.00525.x
Subject(s) - pollen , biology , subfamily , arecaceae , aperture (computer memory) , botany , tetrad , evolutionary biology , palm , genetics , physics , quantum mechanics , acoustics , gene
Pollen morphology has been extensively studied in the Arecaceae, and pollen aperture organization is usually distal monosulcate, as in many monocot families. Much is known about the influence of microsporogenesis on aperture configuration, but the key processes during microsporogenesis responsible for aperture type, number and arrangement are still poorly understood. In order to clarify the developmental sequence underlying aperture type and organization in palm monosulcate pollen, a study of the characteristics of male postmeiotic development was carried out in representative species of four genera of subfamily Coryphoideae, and four genera of subfamily Arecoideae. We found evidence for the occurrence of successive cytokinesis in addition to simultaneous cytokinesis in three Coryphoideae species. Tetrad shape was highly diverse within all species. Our results reveal an unexpected diversity in microsporogenesis from which it may be possible to gain further insight into pollen evolution within the family. © 2006 The Linnean Society of London, Botanical Journal of the Linnean Society , 2006, 151 , 93–102.