|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 9 van 11 gevonden artikelen
| Titel: |
Studies on halimeda. V. effect of temperature on chloroplast migration in this Siphonous green alga& |
| Auteur: |
Drew, Edward A. Abel, Kay M. |
| Verschenen in: |
Biological rhythm research |
| Paginering: | Jaargang 26 (1995) nr. 1 pagina's 48-54 |
| Jaar: |
1995-02 |
| Inhoud: |
The effect of temperatures between 15 and 30°C on the daily cycle of chloroplast migration in Halimeda distorta and H tuna was determined from changes in segment pigmentation recorded by time-lapse videography throughout the experiments. An un-named opuntioid species was also tested between 20 and 35°C. Both the daily pattern and the amplitude of change in surface pigmentation, which were sustained for at least 5 days at 25°C, were unchanged at the higher temperatures. At 20°C the amplitude was considerably reduced but cyclical changes in surface pigmentation continued to occur throughout the 3-day low temperature period. However, at 15°C even greater reduction in amplitude was observed together with a reduced rate of paling at the onset of darkness and absence of pre-dawn re-greening. Furthermore, at 15°C all daily changes in surface pigmentation had ceased by the second day in H tuna and by the third day in H distorta. These effects of lower temperatures were reversed when the plants were returned to 25°C, although after the 15°C treatment of H tuna the amplitude of the change in surface pigmentation in two of the three replicate plants was small on the first night back at 25°C whilst the third plant lost pigmentation progressively and was completely white, and apparently dead, two days later. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 9 van 11 gevonden artikelen
| << vorige | volgende >> |