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dc.contributor.authorFredsgaard, Casper
dc.contributor.authorMoore, Donald B.
dc.contributor.authorAlsoudi, Amer F.
dc.contributor.authorCrisler, James D.
dc.contributor.authorChen, Fei
dc.contributor.authorClark, Benton C.
dc.contributor.authorSchneegurt, Mark A.
dc.identifier.citationFredsgaard, C., Moore, D., Al Soudi, A., Crisler, J., Chen, F., Clark, B., & Schneegurt, M. (2017). Relationships between sucretolerance and salinotolerance in bacteria from hypersaline environments and their implications for the exploration of Mars and the icy worlds. International Journal of Astrobiology, 16(2), 156-162en_US
dc.descriptionClick on the DOI link to access the article (may not be free).en_US
dc.description.abstractThe most extremely osmotolerant microbial isolates are fungi from high-sugar environments that tolerate the lowest water activity (0.61) for growth yet reported. Studies of osmotolerant bacteria have focused on halotolerance rather than sucretolerance (ability to grow in high sugar concentrations). A collection of salinotolerant (>= 10% NaCl or >= 50% MgSO4) bacterial isolates from the Great Salt Plains of Oklahoma and Hot Lake in Washington were screened for sucretolerance in medium supplemented with >= 50% fructose, glucose or sucrose. Tolerances significantly differed between solutes, even though water activities for saline media (0.92 and 0.85 for 10 and 20% NaCl Salt Plains media, respectively) were comparable or lower than water activities for high-sugar media (0.93 and 0.90 for 50 and 70% sucrose artificial nectar media, respectively). These specific solute effects were differentially expressed among individual isolates. Extrapolating the results of earlier food science studies with yeasts at high sugar concentrations to bacteria in salty environments with low water activity should be done with caution. Furthermore, the discussion of habitable Special Regions on Mars and the icy worlds should reflect an understanding of specific solute effects.en_US
dc.description.sponsorshipNASA ROSES Planetary Protection Research (09-PPR09-0004 and 14-PPR14-2-0002), Kansas INBRE NIH NIGMS IDeA (P20 GM103418) and The Flossie E. West Memorial Trust Foundation.en_US
dc.publisherCambridge University Pressen_US
dc.relation.ispartofseriesInternational Journal of Astrobiology;v.16:no.2
dc.subjectExtreme environmentsen_US
dc.subjectSalinity toleranceen_US
dc.subjectSugar toleranceen_US
dc.titleRelationships between sucretolerance and salinotolerance in bacteria from hypersaline environments and their implications for the exploration of Mars and the icy worldsen_US
dc.rights.holder© Cambridge University Press 2016en_US

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