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Review
. 2019 Jan;23(1):1-7.
doi: 10.1007/s00792-018-1071-2. Epub 2018 Nov 29.

Cuniculiplasmataceae, their ecogenomic and metabolic patterns, and interactions with 'ARMAN'

Olga V Golyshina  1 , Rafael Bargiela  2 , Peter N Golyshin  2
Affiliations
Review

Cuniculiplasmataceae, their ecogenomic and metabolic patterns, and interactions with 'ARMAN'

Olga V Golyshina et al. Extremophiles. 2019 Jan.

Abstract

Recently, the order Thermoplasmatales was expanded through the cultivation and description of species Cuniculiplasma divulgatum and corresponding family Cuniculiplasmataceae. Initially isolated from acidic streamers, signatures of these archaea were ubiquitously found in various low-pH settings. Eight genomes with various levels of completeness are currently available, all of which exhibit very high sequence identities and genomic conservation. Co-existence of Cuniculiplasmataceae with archaeal Richmond Mine acidophilic nanoorganisms ('ARMAN')-related archaea representing an intriguing group within the "microbial dark matter" suggests their common fundamental environmental strategy and metabolic networking. The specific case of "Candidatus Mancarchaeum acidiphilum" Mia14 phylogenetically affiliated with "Ca. Micrarchaeota" from the superphylum "Ca. Diapherotrites" along with the presence of other representatives of 'DPANN' with significantly reduced genomes points at a high probability of close interactions between the latter and various Thermoplasmatales abundant in situ. This review critically assesses our knowledge on specific functional role and potential of the members of Cuniculiplasmataceae abundant in acidophilic microbiomes through the analysis of distribution, physiological and genomic patterns, and their interactions with 'ARMAN'-related archaea.

Keywords: ARMAN; Acidophilic archaea; Ca. Micrarchaeota; Cuniculiplasma; Cuniculiplasmataceae; Thermoplasmatales.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Fig. 1
Fig. 1
Phylogenetic and geographical distribution of Thermoplasmatales. 56 rDNA sequences have been used to develop a maximum likelihood phylogenetic tree based on GTR + I + G model, represented in a and c. a The tree showing accession numbers, an affiliation (where it is possible) and environment type (in different colour background). b The geographical location of the isolation sites for the 56 rDNA sequences. Symbols representing each location are also shown in a, on the right margin. Temperature range in the moment of isolation is represented in c for each sequence of the tree. All figures have been developed under R programing environment using the basic R and the packages OpenStreetMaps, ape and phytools. Deep-sea HV deep-sea hydrothermal vent, AMD acid mine drainage, AMDas AMD acidic stream, AMDrw AMD river water
See this image and copyright information in PMC

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