PMID: 9539715May 16, 1998Paper

Light-induced expression of fatty acid desaturase genes

Proceedings of the National Academy of Sciences of the United States of America
M KisZ Gombos

Abstract

In cyanobacterial cells, fatty acid desaturation is one of the crucial steps in the acclimation processes to low-temperature conditions. The expression of all the four acyl lipid desaturase genes of Synechocystis PCC 6803 was studied as a function of temperature and separately as a function of light. We used cells grown at 25 degreesC in light-activated heterotrophic growth conditions. In these cells, the production of alpha-linolenic acid and 18:4 fatty acids was negligible and the synthesis of gamma-linolenic acid was remarkably suppressed compared with those of the cells grown photoautotrophically. The cells grown in the light in the presence of glucose showed no difference in fatty acid composition compared with cells grown photoautotrophically. The level of desC mRNA for delta9 desaturase was not affected by either the temperature or the light. It was constitutively expressed at 25 degreesC with and without illumination. The level of desB transcripts was negligible in the dark-grown cells and was enhanced about 10-fold by exposure of the cells to light. The maximum level of expression occurred within 15 min. The level of desA and desD mRNAs was higher in dark-grown cells than that of desB mRNA for omega3 desaturase. Howeve...Continue Reading

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Citations

Dec 5, 2003·Progress in Lipid Research·James M Ntambi, Makoto Miyazaki
Jan 23, 2003·Prostaglandins, Leukotrienes, and Essential Fatty Acids·Makoto Miyazaki, James M Ntambi
Jan 14, 2003·Trends in Plant Science·Thomas Pfannschmidt
Mar 30, 2011·Journal of Agricultural and Food Chemistry·Jim Junhui Huang, Peter Chikeung Cheung
Oct 12, 2000·Plant Physiology·S L Kujat, G W Owttrim
Sep 19, 2006·Journal of Bacteriology·Claudia SteglichSallie W Chisholm
Sep 6, 2002·Proceedings of the National Academy of Sciences of the United States of America·Zoltan KotaTibor Pali
Jun 8, 2007·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·M PapinaR van Woesik
Dec 31, 2002·Biochemical and Biophysical Research Communications·F Enrique GomezBrian G Fox
Dec 25, 2008·The Journal of Nutrition·Jennifer T SmilowitzMarta D Van Loan
Oct 14, 2017·The ISME Journal·Sheila RoitmanOded Béjà
Aug 2, 2017·Applied Microbiology and Biotechnology·Tomoko YoshinoTsuyoshi Tanaka
May 16, 2001·The Journal of Biological Chemistry·A M CalvoN P Keller
May 30, 2019·International Journal of Molecular Sciences·Krystian Miazek, Beata Brozek-Pluska
Jul 30, 2017·Journal of the Science of Food and Agriculture·Nan MengQiu-Hong Pan
Jul 18, 2020·Frontiers in Plant Science·Janithri S WickramanayakeFiona L Goggin
Aug 3, 2021·Frontiers in Microbiology·Ilaria CamponeschiMichele M Bianchi

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