Abstract
The influence of high light intensity on the growth and pigment accumulating ability ofAnabaena azollae was investigated.A. azollae responded positively to high light intensity (6 klx) and was further evaluated at higher intensities (10 and 15 klx), in the presence of glucose, sucrose and jaggery ± DCMU. Significant enhancement in phycobiliproteins and carotenoids was observed in the sugar supplemented cultures at high light intensities. SDS-PAGE profiles of whole cell proteins revealed the presence of unique bands in such treatments. Sucrose supplementation induced a 30–90% increase in carotenoids, phycocyanin and phycoerythrin content at 10 klx. Molecular analysis of the stimulatory and interactive role of sugars on pigment enhancement at high light intensity may aid in better exploitation of cyanobacteria as a source of pigments.
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Abbreviations
- ARA:
-
acetylene-reducing activity
- APC:
-
allophycocyanin
- Chl:
-
chlorophyll
- D:
-
dark
- DCMU:
-
3-(3′,4′-dichlorophenyl)-1,1-dimethylurea
- DG:
-
dark + glucose
- DGD:
-
dark + glucose + DCMU
- DM:
-
dry mass
- DMRT:
-
Duncan’s multiple range test
- L:
-
light
- LG:
-
light + glucose
- LGD:
-
light + glucose + DCMU
- LH:
-
high light intensity
- LJ:
-
light + jaggery
- LJD:
-
light + jaggery + DCMU
- LL:
-
low light intensity
- LS:
-
light + sucrose
- LSD:
-
light + sucrose + DCMU
- PBS:
-
phycobiliproteins
- PC:
-
phycocyanin
- PE:
-
phycoerythrin
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This work was supported by grants fromIndian Council of Agricultural Research andCouncil of Scientific and Industrial Research (New Delhi, India).
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Venugopal, V., Prasanna, R., Sood, A. et al. Stimulation of pigment accumulation inAnabaena azollae strains: Effect of light intensity and sugars. Folia Microbiol 51, 50–56 (2006). https://doi.org/10.1007/BF02931450
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DOI: https://doi.org/10.1007/BF02931450