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Appl Environ Microbiol. 1985 January; 49(1): 73-78
Copyright © 1985, American Society for Microbiology. All Rights Reserved.

Factors Affecting the Germination of Akinetes of Nodularia spumigena (Cyanobacteriaceae)

Ann L. Huber

Department of Soil Science and Plant Nutrition, University of Western Australia, Nedlands, Western Australia 6009

ABSTRACT

Nutritional and physical factors which influence the germination of akinetes of Nodularia spumigena (Cyanobacteriaceae) were examined. Low concentrations of phosphorus (<0.9 µM) were required for germination. Nitrate had no effect, but ammonia, at concentrations of >45 µM, inhibited germination. Salinities of >20{per thousand} were inhibitory to germination. Optimum temperatures were 22°C or greater. Germination did not take place in the dark, but only very low light intensities (0.5 microeinstein m–2 s–1) were necessary to initiate germination. Red light (620 to 665 nm) was required. More than 24 h of continuous exposure to light was necessary for any significant germination to occur. The conditions for germination corresponded with conditions in the Peel-Harvey Estuary, Western Australia, 2 to 3 weeks before large summer Nodularia blooms.

Appl Environ Microbiol. 1985 January; 49(1): 73-78
Copyright © 1985, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Tsujimura, S., Okubo, T. (2003). Development of Anabaena blooms in a small reservoir with dense sediment akinete population, with special reference to temperature and irradiance. J PLANKTON RES 25: 1059-1067 [Abstract] [Full Text]  


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