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Pollen wall and tapetum development in Plantago major L. (Plantaginaceae): assisting self-assemblyстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 июня 2016 г.
- Авторы: Gabaraeva N., Grigorjeva V., Polevova S., Hemsley A.R.
- Журнал: Grana
- Год издания: 2016
- Издательство: Taylor & Francis
- Местоположение издательства: United Kingdom
- Первая страница: 1
- Последняя страница: 30
- DOI: 10.1080/00173134.2016.1159729
- Аннотация: We have attempted to elucidate the underlying mechanisms of sporoderm development and pattern determination in Plantago major through a detailed ontogenetic study, using transmission electron microscopy (TEM) and scanning electron microscopy (SEM). We aim to compare our observations and interpretation with those on other species. Our study of sporoderm development in Plantago from the early tetrad stage to mature pollen grains has shown that pure physical processes, including self-assembly, which are not under direct genetic control, play an important role and represent evidently one of the instruments of evolution. Our observations fit well with the sequence of self-assembling micellar mesophases and show reiteration of some of them, confirming our self-assembly hypothesis. Some attention was also paid to the possible role of rough and smooth endoplasmic reticulum in the cortical cytoplasm of the developing microspores. The tapetum and Ubisch bodies development are also traced. The importance of detailed ontogenetic studies for understanding the establishment of complex pollen walls in any species and for understanding mechanisms underlying sporoderm development was demonstrated. We also present a simulation, obtained in vitro experiments by self-assembly, mimicking pollen grain of Plantago major. It is clear that, in pollen wall development, biological processes and purely physical factors work in tandem.
- Добавил в систему: Полевова Светлана Вячеславовна