Using thermal inactivation kinetics to calculate the probability of extreme spore longevity: Implications for paleomicrobiology and lithopanspermia

被引:36
作者
Nicholson, WL [1 ]
机构
[1] Univ Arizona, Dept Vet Sci & Microbiol, Tucson, AZ 85721 USA
来源
ORIGINS OF LIFE AND EVOLUTION OF THE BIOSPHERE | 2003年 / 33卷 / 06期
基金
美国国家航空航天局;
关键词
astrobiology; Bacillus; D-value; lithopanspermia; longevity; paleomicrobiology; spore; survival; thermal inactivation; Z-value;
D O I
10.1023/A:1025789032195
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Thermal inactivation kinetics with extrapolation were used to model the survival probabilities of spores of various Bacillus species over time periods of millions of years at the historical ambient temperatures (25-40 degreesC) encountered within the 250 million-year-old Salado formation, from which the putative ancient spore-forming bacterium Salibacillus marismortui strain 2-9-3 was recovered. The model indicated extremely low-to-moderate survival probabilities for spores of mesophiles, but surprisingly high survival probabilities for thermophilic spores. The significance of the results are discussed in terms of the survival probabilities of (i) terrestrial spores in ancient geologic samples and (ii) spores transported between planets within impact ejecta.
引用
收藏
页码:621 / 631
页数:11
相关论文
共 32 条
[21]  
Nicholson W. L., 1990, MOL BIOL METHODS BAC
[22]   Resistance of Bacillus endospores to extreme terrestrial and extraterrestrial environments [J].
Nicholson, WL ;
Munakata, N ;
Horneck, G ;
Melosh, HJ ;
Setlow, P .
MICROBIOLOGY AND MOLECULAR BIOLOGY REVIEWS, 2000, 64 (03) :548-+
[23]   Microbiology - A case of bacterial immortality? [J].
Parkes, RJ .
NATURE, 2000, 407 (6806) :844-845
[24]   Amino acid racemization and the preservation of ancient DNA [J].
Poinar, HN ;
Hoss, M ;
Bada, JL ;
Paabo, S .
SCIENCE, 1996, 272 (5263) :864-866
[25]   DESICCATION TOLERANCE OF PROKARYOTES [J].
POTTS, M .
MICROBIOLOGICAL REVIEWS, 1994, 58 (04) :755-805
[26]   DNA changes in tissues entrapped in plant resins (the precursors of amber) [J].
Rogers, SO ;
Langenegger, K ;
Holdenrieder, O .
NATURWISSENSCHAFTEN, 2000, 87 (02) :70-75
[27]   CATABOLIC REPRESSION OF BACTERIAL SPORULATION [J].
SCHAEFFER, P ;
MILLET, J ;
AUBERT, JP .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1965, 54 (03) :704-+
[28]   Resistance of spores of Bacillus species to ultraviolet light [J].
Setlow, P .
ENVIRONMENTAL AND MOLECULAR MUTAGENESIS, 2001, 38 (2-3) :97-104
[30]   Isolation of a 250 million-year-old halotolerant bacterium from a primary salt crystal [J].
Vreeland, RH ;
Rosenzweig, WD ;
Powers, DW .
NATURE, 2000, 407 (6806) :897-900