Article
Iron Regulation of Growth and Heterocyst Formation in the Nitrogen Fixing Cyanobacterium Nostoc sp. PCC 7120
Authors
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Abstract
The growth of Nostoc sp. PCC 7120 was found to decrease under low iron conditions. A greater degree of iron restriction was achieved when precultures of Nostoc sp. PCC 7120 were grown under low iron conditions to deplete iron stores. Iron deficiency was also found to delay the formation of heterocysts in Nostoc sp. PCC 7120 grown under nitrogen fixing-conditions. The frequency of heterocysts under high iron was greater than under low iron by up to nearly twofold. These results suggested that iron (as well as nitrogen) regulate heterocyst formation and development in Nostoc sp. PCC 7120 under nitrogen-fixing conditions.
Keywords
cyanobacteria, Nostoc sp. PCC 7120, iron, nitrogen fixation, heterocyst formation
Citation
Aly, W. S. M. & Andrews, S. C. (2016). Iron regulation of growth and heterocyst formation in the nitrogen fixing cyanobacterium nostoc sp. PCC 7120. Journal of Ecology of Health & Environment, 4(3), 103–109. https://doi.org/10.18576/jehe/040301
W. S. M. Aly and S. C. Andrews, “Iron regulation of growth and heterocyst formation in the nitrogen fixing cyanobacterium nostoc sp. PCC 7120,” Journal of Ecology of Health & Environment, vol. 4, no. 3, pp. 103–109, 2016, doi: 10.18576/jehe/040301.
Aly WSM, Andrews SC. Iron regulation of growth and heterocyst formation in the nitrogen fixing cyanobacterium nostoc sp. PCC 7120. Journal of Ecology of Health & Environment. 2016;4(3):103–109. doi:10.18576/jehe/040301.
Aly, W. S. M. and Andrews, S. C. (2016), ‘Iron regulation of growth and heterocyst formation in the nitrogen fixing cyanobacterium nostoc sp. PCC 7120’, Journal of Ecology of Health & Environment, 4(3), pp. 103–109. Available at: https://doi.org/10.18576/jehe/040301.
Aly, Wafaa S. M., and Simon C. Andrews. “Iron Regulation of Growth and Heterocyst Formation in the Nitrogen Fixing Cyanobacterium Nostoc Sp. PCC 7120.” Journal of Ecology of Health & Environment, vol. 4, no. 3, 2016, pp. 103–109. https://doi.org/10.18576/jehe/040301.
Aly, Wafaa S. M., and Simon C. Andrews. “Iron Regulation of Growth and Heterocyst Formation in the Nitrogen Fixing Cyanobacterium Nostoc Sp. PCC 7120.” Journal of Ecology of Health & Environment 4, no. 3 (2016): 103–109. https://doi.org/10.18576/jehe/040301.
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Published by: Engineering Journals
