The relation of heterocysts and hormogonia to nitrogen fixation and reproduction in blue-green algae |
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| Authors: | A. H. M. Geurts van Kessel J. H. Mullahy H. F. Linskens |
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| Affiliation: | (1) Botanical Laboratory, Catholic University, Nijmegen, The Netherlands;(2) Department of Biological Sciences, Loyola University, 70118 New Orleans, LA, USA;(3) Department of Botany, University, Toernooiveld, Nijmegen, The Netherlands |
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| Abstract: | Indications are presented that the heterocysts of a member of theRivulariaceae germinate in NO3 free medium containing low concentrations of NH4Cl and glucose. Growth occurred regularly in the absence of combined nitrogen sources (NH4, NO3), suggesting N2 fixation. Phosphate regulates hormogonia release, perhaps indirectly via an influence on differentiation of heterocysts. |
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| Keywords: | Cyanophyceae Heterocysts hormogonia N-fixation reproduction trichom characteristics |
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