The effect of synchronizing dark period on populations of Scenedesmus quadricauda.

Autor:	Zechleder, V.
Další autoři:	Doucha, Jiří Berková, Eva Šetlík, Ivan, 1928-2009
Jazyk:	angličtina
Předmět:	buněčný cyklus replikace DNA fotosyntéza cell cycle DNA replication photosynthesis články journal articles chlorophyll synthesis nuclear division cellular division RNA synthesis
Druh dokumentu:	Non-fiction
Abstrakt:	Abstract: Populations of Scenedesmus quadricauda grown in a continuous chemostatic regime and synchronized by light and dark intervals were exposed to continuous illumination. The effect of light on synthetic and reproduction processes during the time of the omitted dark period and in the subsequent cell cycle was studied. In general, the sequence of cellular processes and their mutual coupling remain the same as in the darkened population. Synthetic processes and photosynthetic activity are depressed during the period of protoplast fission also in the light. The synchronizing effect of the dark period in chlorococcal algae consists in reducing the developmental variability in the population. The developmental state of daughter cells at the end of the dark interval varies in the span of two (as a rule) or four (at maximum) genomic cycles, while at the end of the light period this variability comprises up to eight genomic states. The more advanced autospores start the next cycle with a greater lag.
Databáze:	Katalog Knihovny AV ČR
Externí odkaz:	Plný text