Methanogenic archaea database containing physiological and biochemical characteristics
Methanogenic archaea database containing physiological and biochemical characteristics
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DOI：
10.1099/ijs.0.000065
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发表时间：
2015-04-01
影响因子：
2.8
通讯作者：
Lukaszewicz, Marcin
中科院分区：
文献类型：
--
作者：
Jablonski, Slawomir;Rodowicz, Pawel;Lukaszewicz, Marcin
产甲烷古菌是一类具有独特代谢途径的微生物。在这一组中有150个特征物种;然而，新物种不断被发现。由于产甲烷菌被认为是厌氧生态系统中碳循环的重要组成部分，因此这些微生物的表征对于理解厌氧生态学非常重要。根据对分离的模式菌株的描述，构建了包括产甲烷菌生理生化特性的产甲烷菌数据库（MDB; http://metanogen.biotech.uni.wroc.pl）。对数据的分析表明，产甲烷菌能够在0到122摄氏度之间生长。在相同温度下生长的产甲烷菌可能具有非常不同的生长速率。最适生长温度与DNA G + C含量之间没有明显的相关性。在数据库中观察到以下底物偏好：74.5%的古细菌物种利用H-2 + CO2，33%利用甲基化合物，8.5%利用乙酸盐。甲基化合物的利用（主要是属于甲烷八叠球菌属和甲烷菌属的微生物）很少伴随着利用H-2+CO2的能力。很多时候，所描述的物种的数据是不完整的，特别是基板的喜好。进一步研究，以完成缺失的信息和标准的发展，特别是基板的利用，将是非常有帮助的。
The methanogenic archaea are a group of micro-organisms that have developed a unique metabolic pathway for obtaining energy. There are 150 characterized species in this group; however, novel species continue to be discovered. Since methanogens are considered a crucial part of the carbon cycle in the anaerobic ecosystem, characterization of these micro-organisms is important for understanding anaerobic ecology. A methanogens database (MDB; http://metanogen.biotech.uni.wroc.pl), including physiological and biochemical characteristics of methanogens, was constructed based on the descriptions of isolated type strains. Analysis of the data revealed that methanogens are able to grow from 0 to 122 degrees C. Methanogens growing at the same temperature may have very different growth rates. There is no clear correlation between the optimal growth temperature and the DNA G + C content. The following substrate preferences are observed in the database: 74.5% of archaea species utilize H-2 + CO2, 33% utilize methyl compounds and 8.5 % utilize acetate. Utilization of methyl compounds (mainly Micro-organisms belonging to the genera Methanosarcina and Methanolobus) is seldom accompanied by an ability to utilize H-2+CO2. Very often, data for described species are incomplete, especially substrate preferences. Additional research leading to completion of missing information and development of standards, especially for substrate utilization, would be very helpful.