Dictionary definition: nexine

Article: RUPTURED POLLEN GRAIN1, a Member of the MtN3/saliva Gene Family, ...
Plant Physiology;  June 1, 2008 ;     700+ words ... ... includes an outer sculptured sexine and a simpler foot layer, the nexine (Heslop-Harrison, 1971). The sexine can be further divided ... the innermost layer and is located between plasma membrane and nexine (Heslop-Harrison, 1971). In addition, a tryphine layer ...

Article: DEX1, a novel plant protein, is required for exine pattern ...
Plant Physiology;  December 1, 2001 ;     700+ words ... ... between species, in general it is divided into two main layers: an outer sculpted layer, the sexine, and an inner layer, the nexine (for review, see Stanley and Linskens, 1974). The exine is mainly composed of sporopollenin, which is responsible for ...

Dictionary definition: endexine
A Dictionary of Plant Sciences;      222 words ...endexine See NEXINE .

Dictionary definition: aperturate
A Dictionary of Plant Sciences;      246 words ...aperturate Applied to a structure having openings (apertures), especially to a pollen grain with regions where only nexine is present or exine is lacking completely.

Article: The subfamily Mutisioideae (Asteraceae).(Part 3)(Report)
The Botanical Review;  December 1, 2008 ;     700+ words ... ... equator and 4-5 [micro]m thick at the poles, ectosexine slightly columellate. Ratio ectosexine/endosexine: 1:2. Nexine ca. 2 [micro]m thick (see also Lin et al., 2005). Habitat and Distribution. Genus of six species distributed in North ...

Article: New findings from X.J. Yang and co-authors describe advances in ...
China Weekly News;  December 23, 2008 ;     640 words ... ... of the in situ Classopollis pollen grains was studied in detail. Pollen grain is small, with thin sexine, poorly developed nexine and may be immature, wrote X.J. Yang and colleagues. The researchers concluded: This is the first record of in situ pollen ...