Unexpected metabolic versatility among type II methanotrophs in the Alphaproteobacteria.

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Anna Hakobyan, Werner Liesack
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引用次数: 20

Abstract

Aerobic methane-oxidizing bacteria, or methanotrophs, play a crucial role in the global methane cycle. Their methane oxidation activity in various environmental settings has a great mitigation effect on global climate change. Alphaproteobacterial methanotrophs were among the first to be taxonomically characterized, nowadays unified in the Methylocystaceae and Beijerinckiaceae families. Originally thought to have an obligate growth requirement for methane and related one-carbon compounds as a source of carbon and energy, it was later shown that various alphaproteobacterial methanotrophs are facultative, able to grow on multi-carbon compounds such as acetate. Most recently, we expanded our knowledge of the metabolic versatility of alphaproteobacterial methanotrophs. We showed that Methylocystis sp. strain SC2 has the capacity for mixotrophic growth on H2 and CH4. This mini-review will summarize the change in perception from the long-held paradigm of obligate methanotrophy to today's recognition of alphaproteobacterial methanotrophs as having both facultative and mixotrophic capabilities.

甲变形菌中II型甲烷化菌出人意料的代谢多样性。
需氧甲烷氧化细菌或甲烷氧化菌在全球甲烷循环中起着至关重要的作用。它们在各种环境条件下的甲烷氧化活性对全球气候变化具有很大的减缓作用。甲变形菌是最早被分类鉴定的甲烷营养菌之一,现在统一归入甲基藻科和Beijerinckiaceae科。最初被认为对甲烷和相关的单碳化合物有专性的生长需求,作为碳和能量的来源,后来证明各种甲变形菌甲烷营养菌是兼性的,能够在多碳化合物如醋酸盐上生长。最近,我们扩大了对甲变形菌甲烷氧化菌代谢多样性的了解。结果表明,甲基藻SC2菌株对H2和CH4具有混合营养生长能力。这篇小型综述将总结从长期持有的专性甲烷营养范式到今天对α变形菌甲烷营养菌具有兼性和混合营养能力的认识的变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
期刊介绍: ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.
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