A simple colony‐formation assay in liquid medium, termed ‘tadpoling’, provides a sensitive measure of Saccharomyces cerevisiae culture viability

Here we describe the first high‐throughput amenable method of quantifying Saccharomyces cerevisiae culture viability. Current high‐throughput methods of assessing yeast cell viability, such as flow cytometry and SGA analysis, do not measure the percentage viability of a culture but instead measure c...

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Veröffentlicht in:Yeast (Chichester, England) England), 2013-12, Vol.30 (12), p.501-509
Hauptverfasser: Welch, Aaron Z., Koshland, Douglas E.
Format: Artikel
Sprache:eng
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Zusammenfassung:Here we describe the first high‐throughput amenable method of quantifying Saccharomyces cerevisiae culture viability. Current high‐throughput methods of assessing yeast cell viability, such as flow cytometry and SGA analysis, do not measure the percentage viability of a culture but instead measure cell vitality or colony fitness, respectively. We developed a method, called tadpoling, to quantify the percentage viability of a yeast culture, with the ability to detect as few as one viable cell amongst ~108 dead cells. The most important feature of this assay is the exploitation of yeast colony formation in liquid medium. Utilizing a microtiter dish, we are able to observe a range of viability of 100% to 0.0001%. Comparison of tadpoling to the traditional plating method to measure yeast culture viability reveals that, for the majority of Saccharomyces species analyzed there is no significant difference between the two methods. In comparison to flow cytometry using propidium iodide, the high‐throughput method of measuring yeast culture viability, tadpoling is much more accurate at culture viabilities 
ISSN:0749-503X
1097-0061
DOI:10.1002/yea.2989