Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Development of Pollen Grain Walls and Accumulation of Sporopollenin

Development of Pollen Grain Walls and Accumulation of Sporopollenin By means of electron microscopy, we studied the development of pollen grain walls in Calendula officinalis L., Dimorphotheca aurantiaca DC., and Cichorium intybus L. (Asteraceae). As a reference, we studied the plants from the families Schisandraceae (Schisandra chinensis (Turcz.) Baill.), Lauraceae (Persea americana Mill.), Boraginaceae (Borago officinalis L.), and Cycadaceae (Encephalartos altensteinii Lehm.). In Asteraceae, we revealed two successively initiated layers of glycocalyx that form outer and inner layers of the ectexine. The formation of endexine is contributed by plasma membrane and small vesicles. Glycocalyx in the plants from the families Schisandraceae, Lauraceae, Boraginaceae, and Cycadaceae was found to consist of radially arranged helical cylindrical units, which are receptors of sporopollenin deposition. It is assumed that the receptor-independent accumulation of sporopollenin is also possible. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Development of Pollen Grain Walls and Accumulation of Sporopollenin

Download PDF
9 pages

Loading next page...
1
 
/lp/springer_journal/development-of-pollen-grain-walls-and-accumulation-of-sporopollenin-FV4F8F02T0

References (37)

Publisher
Springer Journals
Copyright
Copyright © 2003 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
DOI
10.1023/A:1023818103172
Publisher site
See Article on Publisher Site

Abstract

By means of electron microscopy, we studied the development of pollen grain walls in Calendula officinalis L., Dimorphotheca aurantiaca DC., and Cichorium intybus L. (Asteraceae). As a reference, we studied the plants from the families Schisandraceae (Schisandra chinensis (Turcz.) Baill.), Lauraceae (Persea americana Mill.), Boraginaceae (Borago officinalis L.), and Cycadaceae (Encephalartos altensteinii Lehm.). In Asteraceae, we revealed two successively initiated layers of glycocalyx that form outer and inner layers of the ectexine. The formation of endexine is contributed by plasma membrane and small vesicles. Glycocalyx in the plants from the families Schisandraceae, Lauraceae, Boraginaceae, and Cycadaceae was found to consist of radially arranged helical cylindrical units, which are receptors of sporopollenin deposition. It is assumed that the receptor-independent accumulation of sporopollenin is also possible.

Journal

Russian Journal of Plant Physiology – Springer Journals

Published: Oct 17, 2004

There are no references for this article.