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Effects of UV radiation on the taxonomic composition of natural bacterioplankton communities from Bahía Engaño (Patagonia, Argentina)

Paper ID Volume ID Publish Year Pages File Format Full-Text
30669 44495 2012 8 PDF Available
Title
Effects of UV radiation on the taxonomic composition of natural bacterioplankton communities from Bahía Engaño (Patagonia, Argentina)
Abstract

In order to gain insights into the effects of solar ultraviolet radiation (UVR, 280–400 nm) on the composition of marine bacterioplankton communities from South Atlantic waters – Bahía Engaño (Patagonia, Argentina), we performed microcosms experiments during the Austral summer of 2010. Water samples were exposed to three solar radiation treatments in 25 L microcosms during 8 days: PAR + UV-A + UV-B (280–700 nm; PAB treatment), PAR + UV-A (320–700 nm; PA treatment), and PAR only (400–700 nm; P treatment). The taxonomic composition of the bacterial communities, at the beginning and at the end of the experiment, were studied by the analyses of 16S rDNA gene libraries. Multivariate and phylogenetic analyses demonstrated substantial differences in the community composition so that the samples exposed to PAR and PAR + UV-A presented more similar taxa assemblages among them than compared to the PAR + UV-A + UV-B exposed one. Our results indicate that overall, exposure to different radiation treatments can shape the taxonomic composition of marine bacterial populations, grown in microcosms, from this Patagonian area.

► Solar ultraviolet radiation (UVR) can harm aquatic microorganisms. ► Data on the effects of UVR on bacterial community composition (BCC) are contrasting. ► We applied different UVR treatments to bacterial communities growing in microcosms. ► Metagenomic analyses indicated that BCC varied depending on UVR treatment. ► This results suggest that exposure to different UVR treatments can affect BCC.

Keywords
Bacterial community composition; Ultraviolet radiation; Patagonia; Microcosms; 16S rDNA libraries
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Effects of UV radiation on the taxonomic composition of natural bacterioplankton communities from Bahía Engaño (Patagonia, Argentina)
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 117, 5 December 2012, Pages 171–178
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us