Dried field populations of Nostoc flagelliforme (Cyanophyceae) require exogenous nutrients for their photosynthetic recovery

The effects of nutrients on the photosynthetic recovery of Nostoc flagelliforme during re-hydration were investigated in order to see if their addition was necessary. Net photosynthesis was negligible in distilled water without nutrient-enrichment. Addition of K super(+) resulted in significant enha...

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Bibliographic Details
Published inJournal of applied phycology Vol. 11; no. 6; pp. 535 - 541
Main Authors Qiu, B, Gao, K
Format Journal Article
LanguageEnglish
Published Dordrecht Springer 1999
Subjects
Bacteriology
Biological and medical sciences
Freshwater
Fundamental and applied biological sciences. Psychology
Metabolism. Enzymes
Microbiology
Nostoc flagelliforme
potassium
Terrestrial environment
Regulation(control)
Cyanobacteria
Rehydration
Bacteria
Nutrient
Photosynthesis
Potassium
Recovery
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Summary:The effects of nutrients on the photosynthetic recovery of Nostoc flagelliforme during re-hydration were investigated in order to see if their addition was necessary. Net photosynthesis was negligible in distilled water without nutrient-enrichment. Addition of K super(+) resulted in significant enhancement of net photosynthesis, whereas other nutrients (Fe super(3+), Mg super(2+), Na super(+), NO sub(3) super(-), PO sub(4) super(3-), Cl super(-)) and trace-metals (A sub(5)) showed little effect. The recovered net photosynthetic activity increased with the increased K super(+), and reached the maximum at concentrations above 230 mu M. Desiccation and re-hydration did not affect the dependence of photosynthetic recovery on K super(+). It was concluded that dried field populations of N. flagelliforme require exogenous addition of potassium for photosynthetic recovery and that growth may be potassium-limited in nature.
Bibliography:ObjectType-Article-2
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ISSN:0921-8971
1573-5176
DOI:10.1023/A:1008146722229