从超净航天器装配设施获得的短小芽孢杆菌菌株的极端孢子紫外线抗性。
Extreme spore UV resistance of Bacillus pumilus isolates obtained from an ultraclean Spacecraft Assembly Facility.
作者信息
Link L, Sawyer J, Venkateswaran K, Nicholson W
机构信息
Department of Veterinary Science and Microbiology, University of Arizona, Tucson, AZ 85721, USA.
出版信息
Microb Ecol. 2004 Feb;47(2):159-63. doi: 10.1007/s00248-003-1029-4. Epub 2003 Sep 17.
Recent environmental microbial sampling of the ultraclean Spacecraft Assembly Facility at NASA Jet Propulsion Laboratory (JPL-SAF) identified spores of Bacillus pumilus as major culturable bacterial contaminants found on and around spacecraft. As part of an effort to assess the efficacy of various spacecraft sterilants, purified spores of 10 JPL-SAF B. pumilus isolates were subjected to 254-nm UV and their UV resistance was compared to spores of standard B. subtilis biodosimetry strains. Spores of six of the 10 JPL-SAF isolates were significantly more resistant to UV than the B. subtilis biodosimetry strain, and one of the JPL-SAF isolates, B. pumilus SAFR-032, exhibited the highest degree of spore UV resistance observed by any Bacillus spp. encountered to date.
美国国家航空航天局喷气推进实验室超净航天器装配设施（JPL-SAF）近期进行的环境微生物采样发现，短小芽孢杆菌的孢子是在航天器及其周围发现的主要可培养细菌污染物。作为评估各种航天器消毒剂功效工作的一部分，对10株JPL-SAF短小芽孢杆菌分离株的纯化孢子进行了254纳米紫外线照射，并将它们的抗紫外线能力与标准枯草芽孢杆菌生物剂量测定菌株的孢子进行了比较。10株JPL-SAF分离株中的6株孢子对紫外线的抗性明显高于枯草芽孢杆菌生物剂量测定菌株，其中一株JPL-SAF分离株短小芽孢杆菌SAFR-032表现出了迄今为止所遇到的任何芽孢杆菌属物种中最高程度的孢子抗紫外线能力。
Zotero 插件