|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ЦЭМИ РАН |
||
Effect of a single excitation stimulus on photosynthetic activity and light-dependent pH banding in Chara cellsстатья
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: 18 июля 2013 г.
- Авторы: Bulychev A.A., Kamzolkina N.A., Luengviriya J., Rubin A.B., Müller S.C.
- Журнал: Journal of Membrane Biology
- Том: 202
- Номер: 1
- Год издания: 2004
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- Первая страница: 11
- Последняя страница: 19
- DOI: 10.1007/s00232-004-0716-5
- Аннотация: Using pH microelectrodes and a Micro-scopy PAM (pulse-amplitude modulated) chlorophyll fluorometer, it is shown that a propagation of an action potential in Chara corallina leads to transient suppression of spatially periodic pH profiles along the illuminated cell. The suppression was manifested as a large pH decrease in the alkaline zones and a slight pH increase in the acid zones. The propagating action potential diminished the maximum yield of chlorophyll fluorescence (Fm′) in the alkaline cell regions, as well as the quantum yield of photosystem II photochemistry, without affecting Fm′ in the acid cell regions. The results indicate an interference of membrane excitation in the mechanisms responsible for pH banding patterns in Characean algae. Apparently, the electrical excitation of the plasma membrane in the alkaline cell regions initiates a pathway that can modulate membrane events at the thylakoid membrane.
- Добавил в систему: Булычев Александр Александрович