Gaiellales

Abstract

Abstract Ga.i.el.la'les. N.L. fem. dim. n. Gaiella , type genus of the order; L. fem. pl. n. suff. – ales , ending to denote an order; N.L. fem. pl. n. Gaiellales , the Gaiella order. Actinomycetota / Thermoleophilia / Gaiellales The order Gaiellales is a member of the class Thermoleophilia . This order accommodates one family, Gaiellaceae , and one genus, Gaiella , composed of one validly published species named Gaiella occulta . Cells stain Gram‐negative and form rod‐shaped cells. Endospores are not observed. The members of this order are mesophilic, strictly aerobic, and chemoorganotrophic. The peptidoglycan contains meso ‐diaminopimelic acid ( meso ‐Dpm) as diagnostic diamino acid and is of type A1γ'. The major respiratory quinone is menaquinone 7 (MK‐7). Members of the order Gaiellales possess internally methyl‐branched fatty acids. 16S rRNA gene sequence signature nucleotide positions 139:224 (C–G) and 722:733 (U–G) are unique to order Gaiellales within the class Thermoleophilia . The species Gaiella occulta was isolated from a deep aquifer. DNA G + C content (mol%) : 71.6 (HPLC). DNA G + C content (%) : 71.7 (genome). Type genus : Gaiella Albuquerque et al. 2011, VL144.