Abstract：
:Testing the limits of survivability in space is the primary focus in astrobiological research. Although a number of previous studies have examined terrestrial life survival in an extraterrestrial environment, only a few have investigated how life systems respond to high doses of alpha cosmic ray, the main component of cosmic rays. We used respiration and photosynthetic rates as indicators of the vital signs of the lichen Caloplaca flavovirescens, which is a symbiotic life form including fungi and algae. Our experiment demonstrated that the photosynthetic rate decreased with increased helium-beam doses, whereas the respiration rate was relatively unaffected. Specifically, under a helium-beam dose greater than 10 Gy, the respiration rate remained nearly constant regardless of further increases in the radiation rate. Our results indicate that the different metabolic systems of terrestrial life forms might exhibit different survival characteristics when they are in space.
journal_name
Radiat Environ Biophysjournal_title
Radiation and environmental biophysicsauthors
Miki K,Kawashima S,Takahashi Y,Yonemura Sdoi
10.1007/s00411-019-00803-3subject
Has Abstractpub_date
2019-08-01 00:00:00pages
449-454issue
3eissn
0301-634Xissn
1432-2099pii
10.1007/s00411-019-00803-3journal_volume
58pub_type
杂志文章abstract：:Radiation is known to be carcinogenic to humans but attempts to demonstrate the process using human tissue culture models have met with little success. In the present study explants were established from urothelium and exposed to radiation and a range of chemical carcinogens, suspected promotor or metabolic agents. Th...
journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
doi：10.1007/BF01210524
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abstract：:A temporary increase in the incidence of infant leukaemia in Greece was reported by Petridou et al., which was attributed to in utero exposure to ionising radiation resulting from the Chernobyl accident. We performed a similar analysis based on the data of the German Childhood Cancer Registry in order to check whether...
journal_title：Radiation and environmental biophysics
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journal_title：Radiation and environmental biophysics
pub_type： 临床试验,杂志文章
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更新日期：2019-03-01 00:00:00
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
doi：10.1007/s00411-005-0006-3
更新日期：2005-10-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/s00411-017-0699-0
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
doi：10.1007/BF01212653
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
doi：10.1007/s004110050149
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journal_title：Radiation and environmental biophysics
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章,评审
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
doi：10.1007/BF01323754
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doi：10.1007/s00411-020-00862-x
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doi：10.1007/s00411-001-0125-4
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
doi：10.1007/BF01595573
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章,meta分析
doi：10.1007/s00411-018-0770-5
更新日期：2019-03-01 00:00:00
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journal_title：Radiation and environmental biophysics
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journal_title：Radiation and environmental biophysics
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doi：10.1007/s00411-015-0611-8
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
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journal_title：Radiation and environmental biophysics
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journal_title：Radiation and environmental biophysics
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
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journal_title：Radiation and environmental biophysics
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
doi：10.1007/BF01326755
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journal_title：Radiation and environmental biophysics
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
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journal_title：Radiation and environmental biophysics
pub_type： 杂志文章
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更新日期：2020-05-01 00:00:00
