1887

Abstract

Summary: Facultatively chemolithotrophic thiobacilli. 022, sp. A2, and , had ubiquinones with 10 isoprene units (Q-10) (group I). These species also had [octadecenoic acid (18:1) + cyclopropane acid of C (19)] as major non-hydroxylated fatty acids. The organisms, except , contained 3-hydroxydecanoic acid (3-OH 10:0) or 3-hydroxytetradecanoic acid (3-OH 14:0) as hydroxy fatty acids. DNA base compositions of these species were 63 to 68 mol% G + C. Other facultatively chemolithotrophic thiobacilli, including 023, and contained Q-8 (group II). They had hexadecanoic acid (16:0), [hexadecenoic acid (16:1) + cyclopropane acid of C (17)] and [18:1 + 19] as major non-hydroxylated fatty acids. The species of group II had 3-OH 10:0 and some possessed 3-hydroxydodecanoic acid (3-OH 12:0). The DNA base composition of these strains was about 65 mol% G + C. Obligate chemolithotrophic thiobacilli contained Q-8 (group III). They had 16:0, [16:1 + 17] with or without [18:1 + 19] as major non-hydroxylated fatty acids. The species of group III contained 3-OH 12:0 and some had 3-OH 10:0 when grown at neutral pH and 3-OH 14:0 in acidophilic conditions. DNA base compositions of these organisms ranged from 51 to 64 mol% G + C. Chemotaxonomic characteristics would seem to be useful for the identification and the classification of thiobacilli.

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/content/journal/micro/10.1099/00221287-128-7-1599
1982-07-01
2020-01-29
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http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-128-7-1599
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