Effect of external pH on cyanobacterial pigment expression
Cyanobacteria are classified as alkalophiles despite their preferential uptake of the acidic form of dissolved inorganic carbon. Long term impacts of external pH on the expression of photosynthetic and structural pigments in Schizothrix calcicola were investigated as potential contributing factors t...
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ndltd-fau.edu-oai-fau.digital.flvc.org-fau_35452019-03-08T03:36:19Z Effect of external pH on cyanobacterial pigment expression West, Maria. Text Electronic Thesis or Dissertation Florida Atlantic University English xi, 76 p. : ill. electronic Cyanobacteria are classified as alkalophiles despite their preferential uptake of the acidic form of dissolved inorganic carbon. Long term impacts of external pH on the expression of photosynthetic and structural pigments in Schizothrix calcicola were investigated as potential contributing factors to this phenomenon. More robust cell walls in S. calcicola at pH <7 are suggested by significantly greater expression of myxoxanthophylls. Direct and indirect physiological costs of altering cell walls may contribute to S. calcicola's depressed growth at acidic pH. Comparison of chlorophylls expression suggests that alkaline rather than neutral external pH is only beneficial for S. calcicola growth in absence of nutrient limitation. While the cyanobacterial biomarker ratio of chlorophylls to echinenone was stable across the pertinent pH range of 6-8, other pigment ratios in S. calcicola were affected by pH with an approximately two week lag between the change of pH and the corresponding change of pigment expression. by Maria West. Thesis (M.S.)--Florida Atlantic University, 2010. Includes bibliography. Electronic reproduction. Boca Raton, Fla., 2010. Mode of access: World Wide Web. Environmental toxicology Cyanobacteria--Environmental aspects Ecosystem management Vegetation dynamics http://purl.flvc.org/FAU/2795335 672293362 2795335 FADT2795335 fau:3545 Charles E. Schmidt College of Science Department of Chemistry and Biochemistry http://rightsstatements.org/vocab/InC/1.0/ https://fau.digital.flvc.org/islandora/object/fau%3A3545/datastream/TN/view/Effect%20of%20external%20pH%20on%20cyanobacterial%20pigment%20expression.jpg |
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English |
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Others
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Environmental toxicology Cyanobacteria--Environmental aspects Ecosystem management Vegetation dynamics |
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Environmental toxicology Cyanobacteria--Environmental aspects Ecosystem management Vegetation dynamics Effect of external pH on cyanobacterial pigment expression |
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Cyanobacteria are classified as alkalophiles despite their preferential uptake of the acidic form of dissolved inorganic carbon. Long term impacts of external pH on the expression of photosynthetic and structural pigments in Schizothrix calcicola were investigated as potential contributing factors to this phenomenon. More robust cell walls in S. calcicola at pH <7 are suggested by significantly greater expression of myxoxanthophylls. Direct and indirect physiological costs of altering cell walls may contribute to S. calcicola's depressed growth at acidic pH. Comparison of chlorophylls expression suggests that alkaline rather than neutral external pH is only beneficial for S. calcicola growth in absence of nutrient limitation. While the cyanobacterial biomarker ratio of chlorophylls to echinenone was stable across the pertinent pH range of 6-8, other pigment ratios in S. calcicola were affected by pH with an approximately two week lag between the change of pH and the corresponding change of pigment expression. === by Maria West. === Thesis (M.S.)--Florida Atlantic University, 2010. === Includes bibliography. === Electronic reproduction. Boca Raton, Fla., 2010. Mode of access: World Wide Web. |
author2 |
West, Maria. |
author_facet |
West, Maria. |
title |
Effect of external pH on cyanobacterial pigment expression |
title_short |
Effect of external pH on cyanobacterial pigment expression |
title_full |
Effect of external pH on cyanobacterial pigment expression |
title_fullStr |
Effect of external pH on cyanobacterial pigment expression |
title_full_unstemmed |
Effect of external pH on cyanobacterial pigment expression |
title_sort |
effect of external ph on cyanobacterial pigment expression |
publisher |
Florida Atlantic University |
url |
http://purl.flvc.org/FAU/2795335 |
_version_ |
1719000487162806272 |