TY  - JOUR
A1  - Döhler, Günter
A1  - Datz, Günter
T1  - Lipid and fatty acid composition of synchronized synechococcus leopoliensis
T2  - Zeitschrift für Naturforschung, C
N2  - The cyanobacterium Synechococcus leopoliensis (Anacystis nidulans, strain L 1402-1) grown at 39 °C and 2 vol. % CO : could be synchronized by a light/dark regime of 3:5 h (white light intensity 1.5 × 104 erg cm-2 sec-1). Content of pigments (chlorophyll a. phycocyanin and carotenoids), R N A and proteins increased linearly up to 100% at the end of the light period while DNA synthesis was lower. Chlorophyll a synthesis was correlated to the photosystem I activity of the isolated thylakoids and to the formation of MGD G . Galacto lipids were synthesized in the light period, only. A lag phase of 2h was observed in the biosynthesis of SQDG and PG. No significant differences were found between the cell and thylakoid fractions. Palmitic (C16:0), hexadecenoic (C16:1) and octadecenoic (C18:1) acid as major com ponents accounted for more than 90% of total fatty acids in MGD G , DGDG and SQDG . PG contains a small amount of stearic (C18:0) and heptadecenoic (C17:1) acid. No significant variations in the fatty acid distribution of all lipids could be detected in the cell fraction during the division cycle. Changes in the ratio of saturated to unsaturated fatty acids were found in isolated thylakoids. only. In experiments with [14C]bicarbonate main radioactivity was measured in galacto lipids while using [14C]acetate SQDG and PG were markedly [14C]labelled. Results were discussed with reference to the findings of eucaryotic algae and the formation of photosynthetic membranes.
KW  - Lipid and Fatty Acid Composition
KW  - Phycocyanin-Free Lamellae
KW  - Synchron Cultures
KW  - Synechococcus
Y1  - 2014
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/79904
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-799046
SN  - 0939-5075
SN  - 1865-7125
VL  - 44.1989
IS  - 3-4
SP  - 202
EP  - 206
PB  - Verlag der Zeitschrift für Naturforschung
CY  - Tübingen
ER  -