Corrigendum: Taxogenomics Resolves Conflict in the Genus Rhodobacter: A Two and Half Decades Pending Thought to Reclassify the Genus Rhodobacter.

[This corrects the article DOI: 10.3389/fmicb.2019.02480.].

In the original article, there was an error in the proposal of Luteovulum sphaeroides subsp. sphaeroides as the type species of Luteovulum gen. nov. This is because according to Rule 15 of the International Code of Nomenclature of Prokaryotes (Parker et al., 2019), the type of a genus is a designated species. The correct descriptions of Luteovulum gen. nov. and species belonging to the genus Luteovulum are given below, with Luteovulum sphaeroides comb. nov. proposed as type species. The corrections have been made to the following sub-sections of the Discussion section:

Description of .

Luteovulum (Lu.te.o'vu.lum. L. masc. adj. luteus yellow; N.L. dim. neut. n. ovulum, a small egg; N.L. neut. n. Luteovulum small yellow egg).

Members can be isolated from freshwater ponds, paddy soils, wastewater treatment plants, alkaline ponds and lake sediments. Gram-stain negative, oval-to-rod shaped cells and have vesicular ICM architecture. Cells are mostly motile with a single polar flagellum and multiply by binary fission. Catalase and oxidase positive. Primarily phototrophic and contain BChl-a and carotenoids of the spheroidene series. Facultative aerobes and mesophilic. Phototrophic growth occurs on a number of organic substrates. The growth factors biotin, niacin and thiamine, alone or in combination, are required for growth. NaCl requirement is not required for growth; can tolerate up to 2–3% NaCl. C18:1ω7c/C18:1ω6C, C18:0, C16:0, C10:0 3OH, C16:1ω7C/C16:1 ω6c, C18;1ω7c11 methyl are the major fatty acids. Phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylcholine and an unidentified glycolipid are the major polar lipids. Hopanoids are not produced. Q10 is the major quinone. Delineation of the genus is based on 16S rRNA and rpoB gene-based phylogeny, phylogenomics, genome comparison and chemotaxonomic differences.

The type species is Luteovulum sphaeroides.

Description of .

(sphae.ro'i.des. L. fem. n. sphaera, sphere, globe; L. suff. -oides (from Gr. suff. -eides, from Gr. n. eidos, that which is seen, form, shape, figure), resembling, similar; N.L. neut. adj. sphaeroides, spherical).

Basonym: Rhodobacter sphaeroides (van Niel 1944) Imhoff et al. 1984

The description of Luteovulum sphaeroides is identical to that of Rba. sphaeroides (Imhoff et al., 1984; Imhoff, 2005) except for the following modifications. C17:0 is present in minor quantities. An unidentified aminolipid, an unidentified phospholipid and a few unidentified lipids are additional polar lipids. Growth can occur at 5°C. Some strains are non-motile.

The type strain is ATH2.4.1T (= DSM 158T = LMG 2827T).

Description of . .

Luteovulum sphaeroides subsp. sphaeroides (sphae.ro'i.des. L. fem. n. sphaera, sphere, globe; L. suff. -oides (from Gr. suff. -eides, from Gr. n. eidos, that which is seen, form, shape, figure), resembling, similar; N.L. neut. adj. sphaeroides, spherical).

The description of Luteovulum sphaeroides subsp. sphaeroides is identical to that of Rba. sphaeroides (Imhoff et al., 1984; Imhoff, 2005) except for the following modifications. C17:0 is present in minor quantities. An unidentified aminolipid, an unidentified phospholipid and two unidentified lipids are additional polar lipids.

The type strain is ATH 2.4.1T (= DSM158T = LMG 2827T). The 16S rRNA gene sequence GenBank/EMBL/DDBJ accession number of the type strain is X53853. The complete genome sequence accession numbers of the type strain are CP030271, CP030272, CP030273, CP030274, CP030275, and CP030276.

Description of . .

Luteovulum megalophilum (me.ga.lo.phi'lum. Gr. adj. megas, wide; N.L. adj. philus-a-um (from Gr. adj. philos-ê -on) friend, loving; N.L. neut. adj. megalophilum, wide (temperature)-loving).

The description of Luteovulum sphaeroides subsp. megalophilum is identical to that of Rba. megalophilus (Arunasri et al., 2008) except for the following modifications. 3-Hydroxy C10:0 and C12:0 fatty acids are present. The DNA G+C content of the type strain calculated from the genome sequence is 68.8 mol%.

The type strain is JA194T (= JCM 14598T = KCTC 5602T). The 16S rRNA gene sequence GenBank/EMBL/DDBJ accession number of the type strain is AM421024 and that of the genome sequence is FZOV00000000.

Description of .

Luteovulum johrii (joh'ri.i. N.L. masc. gen. n. johrii of B. N. Johri, an eminent and well-known Indian microbiologist).

Basonym: Rhodobacter johrii Girija et al. 2010

The description of Luteovulum johrii is identical to that of Rba. johrii (Girija et al., 2010).

The type strain, Luteovulum johrii JA192T, is available from the JCM (JCM 14543T) and DSMZ (DSM 18678T). The 16S rRNA gene sequence GenBank/EMBL/DDBJ accession number of the type strain is AM398152 and that of the genome sequence is MABH00000000.

Description of .

Luteovulum ovatum (o.va'tum. L. neut. adj. ovatum, egg-shaped, ovate)

Basonym: Rhodobacter ovatus Srinivas et al. 2008

The description of Luteovulum ovatum is identical to that of Rba. ovatus (Srinivas et al., 2008).

The type strain is JA234T (= JCM 14779T = CCUG 55049T). The GenBank/EMBL/DDBJ accession number of the 16S rRNA gene sequence of the type strain is AM690348 and that of the genome sequence is OAOQ00000000.

Description of .

Luteovulum azotoformans (a.zo.to.for'mans. N.L. n. azotum [from French n. azote (from Gr. prep. a, not; Gr. n. zôê, life; N. Gr. n. azôê, not sustaining life)], nitrogen; N.L. pref. azo-, pertaining to nitrogen; L. part. adj. formans, forming; N.L. part. adj. azotoformans, nitrogen forming).

Basonym: Rhodobacter azotoformans Hiraishi et al. 1997

The description of Luteovulum azotoformans is identical to that of Rba. azotofarmans (Hiraishi et al., 1996).

The type strain is KA25T (= JCM 9340T = NBRC 16436T). The GenBank/EMBL/DDBJ accession number of the 16S rRNA gene sequence of the type strain is D70846 and that of the genome sequence is QAOT00000000.

Description of .

Luteovulum alkalitolerans (al.ka.li.to'le.rans. N.L. n. alkali, alkali; L. part. adj. tolerans, tolerating; N.L. part. adj. alkalitolerans, alkali-tolerating).

Basonym: Rhodobacter alkalitolerans Gandham et al. 2019

The description of Luteovulum alkalitolerans is identical to that of Rba. alkalitolerans (Gandham et al., 2018).

The type strain is JA916T (= KCTC 15473T = LMG 28749T). The 16S rRNA gene sequence GenBank/EMBL/DDBJ accession number of the type strain is LN810645.

The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.