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Investigating the Effects of Temperature on the Growth and Toxin Production of Saxitoxin, Anatoxin and Cylindropsermopsin-Producing Cyanobacteria

Beers, Emily N
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1607677838514276

Abstract Details

2020, Master of Science (MS), Bowling Green State University, Biological Sciences.
Cyanobacterial harmful algal blooms (cHABs) are a growing global issue that influences the health and socioeconomic status of those dependent on impacted water bodies. Variation in water surface temperatures driven by changing global climate has allowed for increases in the growth of toxigenic HAB-forming cyanobacteria. It has been documented that a range of some genera have shifted with increasing temperature, causing some strains to be able to invade new aquatic environments. While previous studies have investigated the effects of temperature on microcystin-producing cyanobacteria, in the current study, we test the effects of temperature on individual cyanobacterial strains capable of producing either saxitoxins, cylindrospermopsins or anatoxin-a across a thermal gradient of 17 to 30 ºC under common light and replete nutrient conditions. The goal is to determine the strain specific optimal temperatures and limits for growth and toxin production in these HAB-forming cyanobacteria. Using this framework, we tested several different genera including, Aphanizomenon, Dolichospermum, Cylindrospermopsis, and Anabaena. Warmer temperatures favored cell growth while cooler temperatures showed higher toxin production per cell. Overall, the most toxins produced by samples at the end of the experiments were produced where there were the fastest growth rates.
Timothy Davis, Ph. D. (Advisor)
George Bullerjahn, Ph. D. (Committee Member)
Robert McKay, Ph. D. (Committee Member)
30 p.
Biology; Environmental Science; Microbiology
harmful algae; cylindrospermopsin; saxitoxin; cyanobacteria;

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Citations

  • Beers, E. N. (2020). Investigating the Effects of Temperature on the Growth and Toxin Production of Saxitoxin, Anatoxin and Cylindropsermopsin-Producing Cyanobacteria [Master's thesis, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1607677838514276

    APA Style (7th edition)

  • Beers, Emily. Investigating the Effects of Temperature on the Growth and Toxin Production of Saxitoxin, Anatoxin and Cylindropsermopsin-Producing Cyanobacteria. 2020. Bowling Green State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1607677838514276.

    MLA Style (8th edition)

  • Beers, Emily. "Investigating the Effects of Temperature on the Growth and Toxin Production of Saxitoxin, Anatoxin and Cylindropsermopsin-Producing Cyanobacteria." Master's thesis, Bowling Green State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1607677838514276

    Chicago Manual of Style (17th edition)

bgsu1607677838514276
327
© 2020, all rights reserved.
This open access ETD is published by Bowling Green State University and OhioLINK.