N atronomonas

Abstract

Na.tro.no.mo'nas. N.L. n. natron (arbitrarily derived from the Arabic n. natrun or natron ) soda, sodium carbonate; N.L. pref. natrono ‐, pertaining to soda; L. fem. n. monas , monad, unit; N.L. fem. n. Natronomonas , the soda unit. Euryarchaeota / Halobacteria / Halobacteriales / Haloarculaceae / Natronomonas Natronomonas species are rods or pleomorphic shaped (including short rods, flat shapes, tetragons, and cocci), which stain Gram‐negative. Colonies are pigmented red. Chemoorganotrophic, aerobic, and halophilic, requiring at least 2.0 M NaCl. Alkaliphilic or neutrophilic. Alkaliphilic species ( Natronomonas pharaonis ) grow between pH 8.0 and 11.0, with optimum growth at pH 8.5–9.0, while neutrophilic species ( Natronomonas moolapensis and Natronomonas gomsonensis ) grow at pH 5.5–8.5, with optimum growth at pH 7.0–7.5. Membrane polar lipids are glycerol diether analogs of phosphatidylglycerol, phosphatidylglycerophosphate methyl ester, and phosphatidic acid. Phytanyl‐sesterterpanyl moieties (C 20 C 25 ) are present. Unknown phospholipids or glycolipid may exist. Nmn. pharaonis possesses no membrane glycolipids, while Nnm. moolapensis and Nmn. gomsonensis possess an unidentified glycolipid. The structure of the glycolipid observed in Nmn. moolapensis was determined as 1‐(6‐sulfo‐ d ‐glcp/galf‐β1,2‐glycero)‐phospho‐2,3‐diphytanylglycerol. DNA G + C content (mol%) : 61.8–64.3. Type species : Natronomonas pharaonis (Soliman and Trüper 1982) Kamekura, Dyall‐Smith, Upasani, Ventosa and Kates 1997, 856 VP ( Halobacterium pharaonis Soliman and Trüper 1982, 327; Natronobacterium pharaonis Tindall, Ross and Grant 1984, 355), emend. Burns, Janssen, Itoh, Minegishi, Usami, Kamekura and Dyall‐Smith 2010, 1175.

Transient Dynamics of Archaea and Bacteria in Sediments and Brine Across a Salinity Gradient in a Solar Saltern of Goa, India

“…Though Natronomonas has been frequently correlated with halophilic alkaine environments, a few species have been recovered from neutrophilic environments as well. Therefore, sequences affiliated to Natronomonas recovered from Siridao saltern could possibly be neutrophilic, low-magnesium dependent phylotypes (Minegishi and Kamekura, 2015). Other genera found in this study, Halorhabdus (Mouné et al, 2003;Baati et al, 2011;Makhdoumi-Kakhki et al, 2012;Baricz et al, 2014) and Haloplanus (Baricz et al, 2014;Vera-Gargallo and Ventosa, 2018;Couto-Rodríguez and Montalvo-Rodríguez, 2019) are the common dwellers of solar salterns around the world while Halogranum (Youssef et al, 2012) and Halomicrobium (Youssef et al, 2012;Castelán-Sánchez et al, 2019) have been rarely documented.…”