Codh/Acs-Deficient Methanogens Are Prevalent in Anaerobic Digesters

Methanogens are archaea that grow by producing methane as a catabolic end product and thrive in diverse anaerobic habitats, including soil, sediments, oil reservoirs, digestive tracts, and anaerobic digesters. Methanogens have typically been classified into three types—namely, hydrogenotrophic, acet...

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Autores principales:	Misa Nagoya, Atsushi Kouzuma, Kazuya Watanabe
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	hydrogenotrophic methanogen acetoclastic methanogen microbial ecology evolution the Wood–Ljungdahl pathway Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/a93d38098b7a42c19c09c0fe8f011d77
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spelling	oai:doaj.org-article:a93d38098b7a42c19c09c0fe8f011d772021-11-25T18:24:34ZCodh/Acs-Deficient Methanogens Are Prevalent in Anaerobic Digesters10.3390/microorganisms91122482076-2607https://doaj.org/article/a93d38098b7a42c19c09c0fe8f011d772021-10-01T00:00:00Zhttps://www.mdpi.com/2076-2607/9/11/2248https://doaj.org/toc/2076-2607Methanogens are archaea that grow by producing methane as a catabolic end product and thrive in diverse anaerobic habitats, including soil, sediments, oil reservoirs, digestive tracts, and anaerobic digesters. Methanogens have typically been classified into three types—namely, hydrogenotrophic, acetoclastic, and methylotrophic methanogens. In addition, studies have found methanogens that require both hydrogen/CO<sub>2</sub> and organics, such as acetate, for growth. Genomic analyses have shown that these methanogens lack genes for carbon monoxide dehydrogenase/acetyl-CoA synthase (Codh/Acs), one of the oldest enzymes that catalyzes the central step in the Wood–Ljungdahl pathway. Since these methanogens have been found dominant in such habitats as digestive tracts and anaerobic digesters, it is suggested that the loss of Codh/Acs confers ecological advantages on methanogens in these habitats. Comparisons in genomes of methanogens suggest the possibility that these methanogens have emerged recently in anaerobic digesters and are currently under the process of prevalence. We propose that an understanding of the genetic and ecological processes associated with the emergence and prevalence of these methanogens in anaerobic digesters would offer novel evolutionary insights into microbial ecology.Misa NagoyaAtsushi KouzumaKazuya WatanabeMDPI AGarticlehydrogenotrophic methanogenacetoclastic methanogenmicrobial ecologyevolutionthe Wood–Ljungdahl pathwayBiology (General)QH301-705.5ENMicroorganisms, Vol 9, Iss 2248, p 2248 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hydrogenotrophic methanogen acetoclastic methanogen microbial ecology evolution the Wood–Ljungdahl pathway Biology (General) QH301-705.5
spellingShingle	hydrogenotrophic methanogen acetoclastic methanogen microbial ecology evolution the Wood–Ljungdahl pathway Biology (General) QH301-705.5 Misa Nagoya Atsushi Kouzuma Kazuya Watanabe Codh/Acs-Deficient Methanogens Are Prevalent in Anaerobic Digesters
description	Methanogens are archaea that grow by producing methane as a catabolic end product and thrive in diverse anaerobic habitats, including soil, sediments, oil reservoirs, digestive tracts, and anaerobic digesters. Methanogens have typically been classified into three types—namely, hydrogenotrophic, acetoclastic, and methylotrophic methanogens. In addition, studies have found methanogens that require both hydrogen/CO<sub>2</sub> and organics, such as acetate, for growth. Genomic analyses have shown that these methanogens lack genes for carbon monoxide dehydrogenase/acetyl-CoA synthase (Codh/Acs), one of the oldest enzymes that catalyzes the central step in the Wood–Ljungdahl pathway. Since these methanogens have been found dominant in such habitats as digestive tracts and anaerobic digesters, it is suggested that the loss of Codh/Acs confers ecological advantages on methanogens in these habitats. Comparisons in genomes of methanogens suggest the possibility that these methanogens have emerged recently in anaerobic digesters and are currently under the process of prevalence. We propose that an understanding of the genetic and ecological processes associated with the emergence and prevalence of these methanogens in anaerobic digesters would offer novel evolutionary insights into microbial ecology.
format	article
author	Misa Nagoya Atsushi Kouzuma Kazuya Watanabe
author_facet	Misa Nagoya Atsushi Kouzuma Kazuya Watanabe
author_sort	Misa Nagoya
title	Codh/Acs-Deficient Methanogens Are Prevalent in Anaerobic Digesters
title_short	Codh/Acs-Deficient Methanogens Are Prevalent in Anaerobic Digesters
title_full	Codh/Acs-Deficient Methanogens Are Prevalent in Anaerobic Digesters
title_fullStr	Codh/Acs-Deficient Methanogens Are Prevalent in Anaerobic Digesters
title_full_unstemmed	Codh/Acs-Deficient Methanogens Are Prevalent in Anaerobic Digesters
title_sort	codh/acs-deficient methanogens are prevalent in anaerobic digesters
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/a93d38098b7a42c19c09c0fe8f011d77
work_keys_str_mv	AT misanagoya codhacsdeficientmethanogensareprevalentinanaerobicdigesters AT atsushikouzuma codhacsdeficientmethanogensareprevalentinanaerobicdigesters AT kazuyawatanabe codhacsdeficientmethanogensareprevalentinanaerobicdigesters
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Codh/Acs-Deficient Methanogens Are Prevalent in Anaerobic Digesters

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