Memory Effect on the Survival of Deinococcus radiodurans after Exposure in Near Space
文献类型：期刊论文
| 作者 | Chen, Yining1; Zhang, Qing; Wang, Deyu1; Shu, Yao-Gen; Shi, Hualin1,2
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| 刊名 | MICROBIOLOGY SPECTRUM
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| 出版日期 | 2023 |
| 卷号 | 11期号:2 |
| ISSN号 | 2165-0497 |
| 关键词 | UV-C RESISTANCE ESCHERICHIA-COLI DNA-DAMAGE HOMOLOGOUS RECOMBINATION INTERPLANETARY TRANSFER RADIATION-RESISTANCE STRESS-RESPONSE PROTEIN DAMAGE GROWTH-RATE REPAIR |
| DOI | 10.1128/spectrum.03474-22 |
| 英文摘要 | Near space (20 to 100 km in altitude) is an extreme environment with high radiation and extreme cold, making it diffcult for organisms to survive. However, many studies had shown that there were still microbes living in this extremely harsh environment. It was particularly important to study which factors affected the survival of microorganisms living in near space after exposure to irradiation, as this was related to many studies, such as studies of radioresistance mechanisms, panspermia hypothesis, long-distance microbial transfer, and developing extraterrestrial habitats. Survival after radiation was probably influenced by the growth condition before radiation, which is called the memory effect. In this research, we used different growth conditions to affect the growth of Deinococcus radiodurans and lyophilized bacteria in exponential phase to maintain the physiological state at this stage. Then high-altitude scientific balloon exposure experiments were carried out by using the Chinese Academy of Sciences Balloon-Borne Astrobiology Platform (CAS-BAP) at Dachaidan, Qinghai, China (37 degrees 44 ' N, 95 degrees 21 ' E). The aim was to investigate which factors influence survival after near-space exposure. The results suggested that there was a memory effect on the survival of D. radiodurans after exposure. If the differences in growth rate were caused by differences in nutrition, the survival rate and growth rate were positively correlated. Moreover, the addition of paraquat and Mn2+ during the growth phase can also increase survival. This finding may help to deepen the understanding of the mechanics of radiation protection and provide relevant evidence for many studies, such as of long-distance transfer of microorganisms in near space.IMPORTANCE Earth's near space is an extreme environment with high radiation and extreme cold. Which factors affect the survival of microbes in near space is related to many studies, such as studies of radioresistance mechanisms, panspermia hypothesis, long-distance microbial transfer, and developing extraterrestrial habitats. We performed several exposure experiments with Deinococcus radiodurans in near space to investigate which factors influence the survival rate after near-space exposure; that is, there was a relationship between survival after radiation and the growth condition before radiation. The results suggested that there was a memory effect on the survival of D. radiodurans after exposure. This finding may help to deepen the understanding of the mechanism of radiation protection and provide relevant evidence for many studies, such as of long-distance transfer of microorganisms in near space. IMPORTANCE Earth's near space is an extreme environment with high radiation and extreme cold. Which factors affect the survival of microbes in near space is related to many studies, such as studies of radioresistance mechanisms, panspermia hypothesis, long-distance microbial transfer, and developing extraterrestrial habitats. We performed several exposure experiments with Deinococcus radiodurans in near space to investigate which factors influence the survival rate after near-space exposure; that is, there was a relationship between survival after radiation and the growth condition before radiation. The results suggested that there was a memory effect on the survival of D. radiodurans after exposure. This finding may help to deepen the understanding of the mechanism of radiation protection and provide relevant evidence for many studies, such as of long-distance transfer of microorganisms in near space. |
| 学科主题 | Microbiology |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/28020]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Wenzhou Inst, Wenzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Yining,Zhang, Qing,Wang, Deyu,et al. Memory Effect on the Survival of Deinococcus radiodurans after Exposure in Near Space[J]. MICROBIOLOGY SPECTRUM,2023,11(2). |
| APA | Chen, Yining,Zhang, Qing,Wang, Deyu,Shu, Yao-Gen,&Shi, Hualin.(2023).Memory Effect on the Survival of Deinococcus radiodurans after Exposure in Near Space.MICROBIOLOGY SPECTRUM,11(2). |
| MLA | Chen, Yining,et al."Memory Effect on the Survival of Deinococcus radiodurans after Exposure in Near Space".MICROBIOLOGY SPECTRUM 11.2(2023). |
入库方式： OAI收割
来源：理论物理研究所
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