Draft Genome Sequences of 12 Dry-Heat-Resistant Bacillus Strains Isolated from the Cleanrooms Where the Viking Spacecraft Were Assembled

Seuylemezian, Arman; Cooper, Kerry K.; Schubert, Wayne; Vaishampayan, Parag

doi:10.1128/genomea.00094-18

Cited by 7 publications

(3 citation statements)

References 21 publications

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“…Spores from this bacterial species are thirty times more resistant to dry heat than Bacillus atrophaeus, the universally-accepted heat microbial reduction indicator organism . The exact reasoning for B. canaveralius 29669's heat resistance is unknown, but its genome contains a gene coding for a glycogen branching enzyme from hyperthermophile Thermococcus kodakaraensis which may contribute to its heat tolerance (Seuylemezian et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The Impact of the Space Environment on Microbial Growth and Behavior

2024

Frontiers Research Topics

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Frontiers is more than just an open access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers journal seriesThe Frontiers journal series is a multi-tier and interdisciplinary set of openaccess, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers journal series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to qualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers journals series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area.

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Section: Introductionmentioning

confidence: 99%

The Impact of the Space Environment on Microbial Growth and Behavior

2024

Frontiers Research Topics

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“…Spores from this bacterial species are thirty times more resistant to dry heat than Bacillus atrophaeus , the universally-accepted heat microbial reduction indicator organism (Schubert and Beaudet, 2011 ). The exact reasoning for B. canaveralius 29669's heat resistance is unknown, but its genome contains a gene coding for a glycogen branching enzyme from hyperthermophile Thermococcus kodakaraensis which may contribute to its heat tolerance (Seuylemezian et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Establishing Sterility Assurance for Bacillus canaveralius 29669 Spores Under High Heat Exposure

et al. 2022

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The ever-increasing complexity in critical spacecraft hardware and materials has led to the development of new microbial reduction procedures as well as to changes in established processes such as heat microbial reduction (HMR). In the space biology field of Planetary Protection, 500°C for 0.5 s is the current HMR recommendation to reduce microorganisms from flight hardware. However, more studies are needed to effectively determine the microbial reduction capability of high-temperature (more than 200°C), short-duration (under 30 s) heat exposures. One of the many recent microbial reduction bioengineering research avenues harnesses electromagnetic energy for microbial reduction, with previous investigations demonstrating that infrared heaters are capable of the short temperature ramp time required for rapid heating investigations above 200°C. Therefore, this study employed a 6 kW infrared heater to determine the survivability of heat resistant Bacillus canaveralius 29669 to high-temperature, short-duration infrared temperatures. While B. canaveralius 29669 spores can survive microbial heat reduction processes above 200°C, we found evidence suggesting that the 500°C for 0.5 s temperature sterilization specification for Planetary Protection should be updated. This research presents spore survival data and a corresponding model pointing to a re-evaluation of the recommended HMR exposure of 500°C for 0.5 s, while simultaneously meeting requirements on the forward biological contamination of solar system bodies and opening up design possibilities for future spacecraft hardware.

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“…Importância -pouco explorada Zhang et al, 2011;Seuylemezian et al, 2018; Habitat -Solo desértico; veículos espaciais; Potencial -Produção de enzimas; resistente radiação UV;…”

Section: Bacillus Desertiunclassified

Caracterização de bactérias resistentes a metais pesados e o potencial para biorremediação

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Draft Genome Sequences of 12 Dry-Heat-Resistant Bacillus Strains Isolated from the Cleanrooms Where the Viking Spacecraft Were Assembled

Cited by 7 publications

References 21 publications

The Impact of the Space Environment on Microbial Growth and Behavior

The Impact of the Space Environment on Microbial Growth and Behavior

Establishing Sterility Assurance for Bacillus canaveralius 29669 Spores Under High Heat Exposure

Caracterização de bactérias resistentes a metais pesados e o potencial para biorremediação

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