Merkel, Alexander Y.


Publications
14

Phenotypic and genomic characterization of the first alkaliphilic aceticlastic methanogens and proposal of a novel genus Methanocrinis gen.nov. within the family Methanotrichaceae

Citation
Khomyakova et al. (2023). Frontiers in Microbiology 14
Names
Methanocrinis alkalitolerans Methanocrinis natronophilus Methanocrinis harundinaceus Ts Methanocrinis
Abstract
Highly purified cultures of alkaliphilic aceticlastic methanogens were collected for the first time using methanogenic enrichments with acetate from a soda lake and a terrestrial mud volcano. The cells of two strains were non-motile rods forming filaments. The mud volcano strain M04Ac was alkalitolerant, with the pH range for growth from 7.5 to 10.0 (optimum at 9.0), while the soda lake strain Mx was an obligate alkaliphile growing in the pH range 7.7–10.2 (optimum 9.3–9.5) in the presence of op

CandidatusSiderophilus nitratireducens”: a psychrophilic,nap-dependent nitrate-reducing iron oxidizer within the new order Siderophiliales

Citation
Corbera-Rubio et al. (2023).
Names
Ca. Siderophilus nitratireducens
Abstract
AbstractNitrate leaching from agricultural soils is increasingly found in groundwater, a primary source of drinking water worldwide. This nitrate influx can potentially stimulate the biological oxidation of iron in anoxic groundwater reservoirs. Nitrate-reducing iron-oxidizing (NRFO) bacteria have been extensively studied in laboratory settings, yet their ecophysiology in natural environments remains largely unknown. To this end, we established a pilot-scale filter on nitrate-rich groundwater to

Phenotypic and genomic characterization of Bathyarchaeum tardum gen. nov., sp. nov., a cultivated representative of the archaeal class Bathyarchaeia

Citation
Khomyakova et al. (2023). Frontiers in Microbiology 14
Names
Bathyarchaeum tardum Ts Bathyarchaeum Bathyarchaeia Bathyarchaeales Bathyarchaeaceae Methanocrinis Methanocrinis harundinaceus Ts Methanocrinis alkalitolerans Methanocrinis natronophilus
Abstract
Bathyarchaeia are widespread in various anoxic ecosystems and are considered one of the most abundant microbial groups on the earth. There are only a few reports of laboratory cultivation of Bathyarchaeia, and none of the representatives of this class has been isolated in pure culture. Here, we report a sustainable cultivation of the Bathyarchaeia archaeon (strain M17CTs) enriched from anaerobic sediment of a coastal lake. The cells of strain M17CTs were small non-motile cocci, 0.4–0.7 μm in dia

Thiohalobacterales ord. nov.

Citation
Sorokin, Merkel (2023). Bergey's Manual of Systematics of Archaea and Bacteria
Names
Thiohalobacterales
Abstract
Abstract Thi.o.ha.lo.bac.ter.al'es N.L. masc. n. Thiohalobacter , the type genus of the order; L. fem. pl. n. suff. ‐ ales , ending to denote an order; N.L. fem. pl. n. Thiohalobacterales , the order of the genus Thiohalobacter . Proteobacteria / Gammaproteobacteria / Thiohalobacterales ord. nov. The order Thioh

Thiohalobacteraceae fam. nov.

Citation
Sorokin, Merkel (2023). Bergey's Manual of Systematics of Archaea and Bacteria
Names
Thiohalobacteraceae
Abstract
Abstract Thi.o.ha.lo.bac.ter.a.ce'ae N.L. masc. n. Thiohalobacter , the type genus of the family, ‐ aceae ending to denote a family; N.L. fem. pl. n. Thiohalobacteraceae the Thiohalobacter family. Proteobacteria / Gammaproteobacteria / Thiohalobacterales / Thiohalobacteraceae fam. nov. The family Thiohalobactera

Thiohalorhabdales ord. nov.

Citation
Sorokin, Merkel (2023). Bergey's Manual of Systematics of Archaea and Bacteria
Names
Thiohalorhabdales
Abstract
Abstract Thi.o.ha.lo.rhab.dal'es N.L. fem. n. Thiohalorhabdus , the type genus of the order; L. fem. pl. n. suff. ‐ ales ending to denote an order; N.L. fem. pl. n. Thiohalorhabdales , order of the genus Thiohalorhabdus . Proteobacteria / Gammaproteobacteria / Thiohalorhabdales ord. nov. According to the phylogenomic analysis, the orde

Thiohalorhabdaceae fam. nov.

Citation
Sorokin, Merkel (2023). Bergey's Manual of Systematics of Archaea and Bacteria
Names
Thiohalorhabdaceae
Abstract
Abstract Thi.o.ha.lo.rhab.da.ce'ae N.L. fem. n. Thiohalorhabdus , the type genus of the family; L. fem. pl. n. suff.‐ aceae , ending to denote a family; N.L. fem. pl. n. Thiohalorhabdaceae , the Thiohalorhabdus family. Proteobacteria / Gammaproteobacteria / Thiohalorhabdales / Thiohalorhabdaceae fam. nov. The family Thiohal

Symbiosis between nanohaloarchaeon and haloarchaeon is based on utilization of different polysaccharides

Citation
La Cono et al. (2020). Proceedings of the National Academy of Sciences 117 (33)
Names
“Nanohalobiia” Ca. Nanohalobium constans “Nanohalobiales” “Nanohalobiaceae”
Abstract
Significance We report on cultivation and characterization of an association between Candidatus Nanohalobium constans and its host, the chitinotrophic haloarchaeon Halomicrobium LC1Hm, obtained from a crystallizer pond of marine solar salterns. High-quality nanohaloarchael genome sequence in conjunction with electron- and fluorescence microscopy, growth analysis, and proteomic and metabolomic data revealed mutually beneficial