Abstract：
:The biological effects of UV radiation of different wavelengths (UVA, UVB and UVC) were assessed in nine bacterial isolates displaying different UV sensitivities. Biological effects (survival and activity) and molecular markers of oxidative stress [DNA strand breakage (DSB), generation of reactive oxygen species (ROS), oxidative damage to proteins and lipids, and the activity of antioxidant enzymes catalase and superoxide dismutase] were quantified and statistically analyzed in order to identify the major determinants of cell inactivation under the different spectral regions. Survival and activity followed a clear wavelength dependence, being highest under UVA and lowest under UVC. The generation of ROS, as well as protein and lipid oxidation, followed the same pattern. DNA damage (DSB) showed the inverse trend. Multiple stepwise regression analysis revealed that survival under UVA, UVB and UVC wavelengths was best explained by DSB, oxidative damage to lipids, and intracellular ROS levels, respectively.
journal_name
Arch Microbioljournal_title
Archives of microbiologyauthors
Santos AL,Oliveira V,Baptista I,Henriques I,Gomes NC,Almeida A,Correia A,Cunha Âdoi
10.1007/s00203-012-0847-5subject
Has Abstractpub_date
2013-01-01 00:00:00pages
63-74issue
1eissn
0302-8933issn
1432-072Xjournal_volume
195pub_type
杂志文章abstract：:In addition to rhizobia, other non-symbiotic endophytic bacteria also have been simultaneously isolated from the same root nodules. The existence of non-symbiotic endophytic bacteria in leguminous root nodules is a universal phenomenon. The vast majority of studies have detected endophytic bacteria in other plant tiss...
journal_title：Archives of microbiology
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更新日期：2020-03-01 00:00:00
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journal_title：Archives of microbiology
pub_type： 杂志文章
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更新日期：2019-09-01 00:00:00
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更新日期：2019-01-01 00:00:00
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更新日期：2009-09-01 00:00:00
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journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00410891
更新日期：1984-08-01 00:00:00
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更新日期：2003-12-01 00:00:00
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更新日期：2018-01-01 00:00:00
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更新日期：2018-08-01 00:00:00
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更新日期：2011-07-01 00:00:00
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journal_title：Archives of microbiology
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更新日期：2009-03-01 00:00:00
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journal_title：Archives of microbiology
pub_type： 杂志文章
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更新日期：1983-06-01 00:00:00
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journal_title：Archives of microbiology
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journal_title：Archives of microbiology
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journal_title：Archives of microbiology
pub_type： 杂志文章
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