DOI: 10.1016/j.atmosenv.2015.07.009
Scopus记录号: 2-s2.0-84937598248
论文题名: Survival of microbial isolates from clouds toward simulated atmospheric stress factors
作者: Joly M ; , Amato P ; , Sancelme M ; , Vinatier V ; , Abrantes M ; , Deguillaume L ; , Delort A ; -M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 117 起始页码: 92
结束页码: 98
语种: 英语
英文关键词: Bacteria
; Cloud
; Freeze-thaw
; Oxidant
; Survival
Scopus关键词: Biology
; Cell culture
; Cells
; Clouds
; Cytology
; Freezing
; Osmosis
; Oxidants
; Road construction
; Solar power generation
; Strain
; Thawing
; Atmospheric factors
; Condensation/evaporation
; Freeze-thaw
; Freeze-thaw cycles
; Living organisms
; Microbial isolates
; Pseudomonas species
; Survival
; Bacteria
; hydrogen peroxide
; ice
; bacterium
; cloud water
; freeze-thaw cycle
; fuel cell
; microbial activity
; nucleation
; osmosis
; oxidant
; survival
; yeast
; Arthrobacter
; Article
; atmosphere
; bacterial survival
; bacterium culture
; bacterium isolate
; cell survival
; cell suspension
; cell viability
; cloud
; controlled study
; Dioszegia
; environmental stress
; evaporation
; freeze thawing
; light
; microbial community
; nonhuman
; osmotic stress
; oxidative stress
; pigmentation
; polymerization
; priority journal
; Pseudomonas
; simulation
; solar radiation
; Sphingomonas
; survival rate
; yeast
; Arthrobacter
; Bacteria (microorganisms)
; Dioszegia
; Pseudomonas
; Sphingomonas
; Sphingomonas sp.
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: In the atmosphere, airborne microbial cells are exposed to conditions that are thought to affect their survival. Here, we investigated the survival of 5 microorganisms among the most represented in the cultivable community of clouds (4 bacteria affiliated to Pseudomonas, Sphingomonas and Arthrobacter and 1 yeast of Dioszegia) after exposition to different atmospheric factors generally considered stressful for cells: artificial solar light (10h), oxidant (hydrogen peroxide: 0-1mM for 90min), osmotic shocks (0.1-2.5M NaCl) and freeze-thaw cycles (6 cycles of 5°C/-40°C). Each condition was applied separately to cell suspensions, and survival rates were examined by culture. Survival was highly strain and stress dependent, with no relationship with pigmentation or ice nucleation activity. In all strains, solar light had no or mitigated influence, and exposition to H2 O2 at the concentration measured in cloud water only slightly impacted viability (>70% of the cells survived). The strain Sphingomonas sp. was particularly impacted by osmotic shocks while repeated freeze-thaw was particularly damaging for Arthrobacter and Pseudomonas species. Overall, our results tend to indicate that in the atmosphere, the most stringent selection factors on living organisms are probably freeze-thaw and condensation/evaporation (osmotic shocks) cycles, whereas the impacts of oxidants and of solar light are limited. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81623
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand (ICCF), BP 10448, Clermont-Ferrand, France; CNRS, UMR 6296, Institut de Chimie de Clermont-Ferrand (ICCF), BP 80026, Aubière, France; Clermont Université, Université Blaise Pascal, Observatoire de Physique du Globe de Clermont-Ferrand, Laboratoire de Météorologie Physique (LaMP), BP 10448, Clermont-Ferrand, France; CNRS, UMR 6016, Laboratoire de Météorologie Physique (LaMP), Observatoire de Physique du Globe de Clermont-Ferrand (OPGC), BP 80026, Aubière, France
Recommended Citation:
Joly M,, Amato P,, Sancelme M,et al. Survival of microbial isolates from clouds toward simulated atmospheric stress factors[J]. Atmospheric Environment,2015-01-01,117