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Abstract

Solar panel surfaces, although subjected to a range of extreme environmental conditions, are inhabited by a diverse microbial community adapted to solar radiation, desiccation and temperature fluctuations. This is the first time a new bacterial species has been isolated from this environment. Strain R4DWN belongs to the genus and was isolated from a solar panel surface in Boston, MA, USA. Strain R4DWN is a Gram-negative, non-motile and rod-shaped bacteria that tested positive for oxidase and catalase and forms round-shaped, shiny and orange-coloured colonies. It is mesophilic, neutrophilic and non-halophilic, and presents a more stenotrophic metabolism than its closest neighbours. The major fatty acids in this strain are Cω7/Cω6, Cω7/Cω6, C 2OH and C. Comparison of 16S rRNA gene sequences revealed that the closest type strains to R4DWN are , , , and with 96.3, 96.1, 96.0, 95.9 and 95.7 % pairwise similarity, respectively. The genomic G+C content of R4DWN is 67.9 mol%. Based on these characteristics, strain R4DWN represents a novel species of the genus for which the name sp. nov. is proposed with the type strain R4DWN (=CECT 9811=LMG 31344).

Funding
This study was supported by the:
  • National Science Foundation (Award CAREER Award (MCB-1350949))
    • Principle Award Recipient: Ahmad S. Khalil
  • National Institutes of Health (Award Director’s New Innovator Award (1DP2AI131083-01))
    • Principle Award Recipient: Ahmad S. Khalil
  • IARPA FELIX (Award N66001-18-C-4503)
    • Principle Award Recipient: Ahmad S. Khalil
  • Defense Advanced Research Projects Agency (Award HR0011-18-2-0014)
    • Principle Award Recipient: Ahmad S. Khalil
  • Defense Advanced Research Projects Agency (Award HR0011-15-C-0091)
    • Principle Award Recipient: Ahmad S. Khalil
  • Ministerio de Ciencia, Innovación y Universidades (Spain), co-financed by FEDER funds (Award BIO2015-66960-C3-1-R)
    • Principle Award Recipient: Juli Peretó
  • Ministerio de Ciencia, Innovación y Universidades (Spain) (Award DI-16-08976)
    • Principle Award Recipient: Kristie Tanner
  • Real Colegio Complutense (Award Visiting Research Fellowship)
    • Principle Award Recipient: Kristie Tanner
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2024-04-19
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