Academic Journal
Genomic Analysis of Haloarchaea from Diverse Environments, including Permian Halite, Reveals Diversity of Ultraviolet Radiation Survival and DNA Photolyase Gene Variants
| العنوان: | Genomic Analysis of Haloarchaea from Diverse Environments, including Permian Halite, Reveals Diversity of Ultraviolet Radiation Survival and DNA Photolyase Gene Variants |
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| المؤلفون: | Sagorika Nag, Priya DasSarma, David J. Crowley, Rafael Hamawi, Samantha Tepper, Brian P. Anton, Daniel Guzmán, Shiladitya DasSarma |
| المصدر: | Microorganisms, Vol 11, Iss 3, p 607 (2023) |
| بيانات النشر: | MDPI AG, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Biology (General) |
| مصطلحات موضوعية: | radiation, halophile, stratosphere, solar radiation, archaea, extremophiles, Biology (General), QH301-705.5 |
| الوصف: | Ultraviolet (UV) radiation responses of extremophilic and archaeal microorganisms are of interest from evolutionary, physiological, and astrobiological perspectives. Previous studies determined that the halophilic archaeon, Halobacterium sp. NRC-1, which survives in multiple extremes, is highly tolerant of UV radiation. Here, Halobacterium sp. NRC-1 UV tolerance was compared to taxonomically diverse Haloarchaea isolated from high-elevation salt flats, surface warm and cold hypersaline lakes, and subsurface Permian halite deposits. Haloterrigena/Natrinema spp. from subsurface halite deposits were the least tolerant after exposure to photoreactivating light. This finding was attributed to deviation of amino acid residues in key positions in the DNA photolyase enzyme or to the complete absence of the photolyase gene. Several Halobacterium, Halorubrum and Salarchaeum species from surface environments exposed to high solar irradiance were found to be the most UV tolerant, and Halorubrum lacusprofundi from lake sediment was of intermediate character. These results indicate that high UV tolerance is not a uniform character trait of Haloarchaea and is likely reflective of UV exposure experienced in their environment. This is the first report correlating natural UV tolerance to photolyase gene functionality among Haloarchaea and provides insights into their survival in ancient halite deposits and potentially on the surface of Mars. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 11030607 2076-2607 |
| Relation: | https://www.mdpi.com/2076-2607/11/3/607; https://doaj.org/toc/2076-2607 |
| DOI: | 10.3390/microorganisms11030607 |
| URL الوصول: | https://doaj.org/article/058a40726d0f46e7a815a5468263bb87 |
| رقم الانضمام: | edsdoj.058a40726d0f46e7a815a5468263bb87 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 11030607 20762607 |
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| DOI: | 10.3390/microorganisms11030607 |