Octadecabacter ascidiaceicola (KCTC 42605, CECT 8868, RA1-3)

Name: Octadecabacter ascidiaceicola (KCTC 42605, CECT 8868, RA1-3)
Creator: BacDive
License: http://creativecommons.org/licenses/by/4.0/

BacDive ID 158523

Type strain

Strain Designation RA1-3

Culture col. no. KCTC 42605 CECT 8868 RA1-3

NCBI tax ID(s) 1655543

Special Collections KCTC Literature strains

Links

Octadecabacter ascidiaceicola RA1-3 is a mesophilic, Gram-negative, rod-shaped prokaryote that forms circular colonies and was isolated from sea squirt .

Gram-negative rod-shaped colony-forming mesophilic genome sequence 16S sequence

Name and taxonomic classification

SI-ID 26474

KCTC 42605,CECT 8868

@ref 20215

Last LPSN update 2025-12-16 10:08:03

Domain Pseudomonadati

Phylum Pseudomonadota

Class Alphaproteobacteria

Order Rhodobacterales

Family Roseobacteraceae

Genus Octadecabacter

Species Octadecabacter ascidiaceicola

Full scientific name Octadecabacter ascidiaceicola Kim et al. 2016

Morphology

Cell morphology

@ref	Gram stain	Cell length	Cell width	Cell shape	Confidence
65200	negative	0.2-3.5 µm	0.2-0.5 µm	rod-shaped
65200				coccus-shaped
65200				ovoid-shaped
125438	negative				98
125439	negative				92.9

Colony morphology

@ref	Colony size	Colony color	Colony shape	Incubation period	Medium used
65200	0.7-1.5 mm	greyish-yellow	circular	7 days	marine agar 2216

Culture and growth conditions

Culture medium

@ref	Name	Growth
65200	Marine agar (MA)

Culture temp

@ref	Growth	Type	Temperature (°C)	Range
65200	positive	optimum	25	mesophilic
65200	positive	growth	10	psychrophilic
65200	positive	growth	30	mesophilic
65200	negative	growth	4
65200	negative	growth	35

Culture pH

@ref	Ability	Type	PH
65200	positive	optimum	7.0-8.0
65200	positive	growth	6.0
65200		growth	5.5

Physiology and metabolism

Oxygen tolerance

@ref	Oxygen tolerance	Confidence
125439	obligate aerobe	98.8

Spore formation

@ref	Spore formation	Confidence
65200
125438		92.339
125439		97.1

Halophily

@ref	Salt	Growth	Tested relation	Concentration
65200	NaCl	positive	growth	1.0-5.0 %(w/v)
65200	NaCl	positive	optimum	2.0-3.0 %(w/v)

Observation

@ref	Observation
65200	Mg2+ ions are not required for growth
65200	Anaerobic growth does not occur on MA or on MA supplemented with nitrate

Metabolite utilization

@ref	Chebi-ID	Metabolite	Utilization activity	Kind of utilization tested
65200	30089 ChEBI	acetate	+	assimilation
65200	16150 ChEBI	benzoate	-	assimilation
65200		casein	-	hydrolysis
65200	17057 ChEBI	cellobiose	+	assimilation
65200	16947 ChEBI	citrate	-	assimilation
65200	15824 ChEBI	D-fructose	+	assimilation
65200	12936 ChEBI	D-galactose	+	assimilation
65200	17634 ChEBI	D-glucose	+	assimilation
65200	16024 ChEBI	D-mannose	-	assimilation
65200	65327 ChEBI	D-xylose	-	assimilation
65200	4853 ChEBI	esculin	-	hydrolysis
65200	15740 ChEBI	formate	-	assimilation
65200	5291 ChEBI	gelatin	-	hydrolysis
65200	17368 ChEBI	hypoxanthine	+	hydrolysis
65200	30849 ChEBI	L-arabinose	-	assimilation
65200	29985 ChEBI	L-glutamate	-	assimilation
65200	15589 ChEBI	L-malate	-	assimilation
65200	17895 ChEBI	L-tyrosine	+	hydrolysis
65200	17306 ChEBI	maltose	-	assimilation
65200	17632 ChEBI	nitrate	-	reduction
65200	15361 ChEBI	pyruvate	+	assimilation
65200	17814 ChEBI	salicin	-	assimilation
65200	28017 ChEBI	starch	-	hydrolysis
65200	143136 ChEBI	succinamate	-	assimilation
65200	17992 ChEBI	sucrose	-	assimilation
65200	27082 ChEBI	trehalose	-	assimilation
65200	53426 ChEBI	tween 80	-	hydrolysis
65200	16199 ChEBI	urea	-	hydrolysis
65200	15318 ChEBI	xanthine	-	hydrolysis

Antibiotic resistance

@ref	ChEBI	Metabolite	Sensitivity conc.	Resistance conc.
65200	28971	ampicillin	10 µg (disc)
65200	3393	carbenicillin	100 µg (disc)
65200	3542	cephalothin	30 µg (disc)
65200	17698	chloramphenicol	100 µg (disc)
65200	17833	gentamicin	30 µg (disc)
65200	6104	kanamycin	30 µg (disc)
65200	6472	lincomycin		15 µg (disc)
65200	7507	neomycin	30 µg (disc)
65200	28368	novobiocin	5 µg (disc)
65200	16869	oleandomycin	15 µg (disc)
65200	18208	penicillin g	20 Unit
65200	8309	polymyxin b	100 Unit
65200	17076	streptomycin	50 Unit
65200	27902	tetracycline	30 µg (disc)

Enzymes

@ref	Value	Activity	Ec
65200	acid phosphatase	+	3.1.3.2
65200	alkaline phosphatase	+	3.1.3.1
65200	alpha-chymotrypsin	-	3.4.21.1
65200	alpha-fucosidase	-	3.2.1.51
65200	alpha-galactosidase	-	3.2.1.22
65200	alpha-glucosidase	-	3.2.1.20
65200	alpha-mannosidase	-	3.2.1.24
65200	beta-galactosidase	-	3.2.1.23
65200	beta-glucosidase	-	3.2.1.21
65200	beta-glucuronidase	-	3.2.1.31
65200	catalase	+	1.11.1.6
65200	cystine arylamidase	-	3.4.11.3
65200	cytochrome oxidase	+	1.9.3.1
65200	esterase (C 4)	+
65200	esterase Lipase (C 8)	+
65200	leucine arylamidase	+	3.4.11.1
65200	lipase (C 14)	-
65200	N-acetyl-beta-glucosaminidase	-	3.2.1.52
65200	naphthol-AS-BI-phosphohydrolase	-
65200	trypsin	-	3.4.21.4
65200	valine arylamidase	-

Fatty acid profile

Metadata FA analysis

@ref

65200

Fatty acid	Percentage
C18:1ω7c	73.4
C16:0	9.5
C12:1 3OH	4.7
11-methyl C18:1ω7	4.6
C18:0	2.2
C10:0 3OH	2.1
C16:1ω7c and/or C16:1ω6c	1.5
C17:0	0.7
C14:0 2OH	0.7

Isolation, sampling and environmental information

Isolation source categories

Cat1	Cat2	Cat3
#Host	#Invertebrates (Other)	#Tunicata

Isolation

@ref	Sample type	Geographic location	Country	Country ISO 3 Code	Continent
65200	sea squirt (Halocynthia roretzi)	South sea	Republic of Korea	KOR	Asia

Interaction and safety

Sequence information

Genome sequences

@ref	Description	Assembly level	INSDC accession	BV-BRC accession	IMG accession	NCBI tax ID	Score
66792	O.ascidiaceicola_CECT8868_Spades_Prokka assembly for Octadecabacter ascidiaceicola CECT 8868	contig	GCA_900185015	1655543.5	2835130448	1655543	69.91

16S sequences

@ref	Description	Accession	Database
65200	Octadecabacter ascidiaceicola 16S ribosomal RNA gene, partial sequence	KP998176

GC content

@ref	GC-content (mol%)	Method
65200	56	high performance liquid chromatography (HPLC)

Genome-based predictions

Predictions

Predictions from Deep Learning for Genome Sequence Data. R package version 0.3.1 based on: Octadecabacter ascidiaceicola CECT 8868
NCBI: GCA_900185015

@ref	Trait	Model	Prediction	Confidence in %	In training data
125439	spore_formation	BacteriaNetⓘ	no	97.10	no
125439	motility	BacteriaNetⓘ	yes	50.20	no
125439	gram_stain	BacteriaNetⓘ	negative	92.90	no
125439	oxygen_tolerance	BacteriaNetⓘ	obligate aerobe	98.80	no

Predictions from bacterial phenotypic traits through improved machine learning using high-quality, curated datasets based on: Octadecabacter ascidiaceicola strain CECT 8868
PATRIC: 1655543.5

@ref	Trait	Model	Prediction	Confidence in %	In training data
125438	gram-positive	gram-positiveⓘ	no	98.00	no
125438	anaerobic	anaerobicⓘ	no	95.74	no
125438	spore-forming	spore-formingⓘ	no	92.34	yes
125438	aerobic	aerobicⓘ	yes	81.38	no
125438	thermophilic	thermophileⓘ	no	97.30	no
125438	flagellated	motile2+ⓘ	no	61.58	no

Literature

Topic	Title	Authors	Journal	DOI	Year
Phylogeny	Octadecabacter ascidiaceicola sp. nov., isolated from a sea squirt (Halocynthia roretzi).	Kim YO, Park IS, Park S, Nam BH, Park JM, Kim DG, Yoon JH	Int J Syst Evol Microbiol	10.1099/ijsem.0.000715	2015

References

#20215	Parte, A.C., Sardà Carbasse, J., Meier-Kolthoff, J.P., Reimer, L.C. and Göker, M.: List of Prokaryotic names with Standing in Nomenclature (LPSN) moves to the DSMZ. IJSEM ( DOI 10.1099/ijsem.0.004332 )
#65200	Young-Ok Kim, In-Suk Park, Sooyeon Park, Bo-Hye Nam, Ji-Min Park, Dong-Gyun Kim, Jung-Hoon Yoon: Octadecabacter ascidiaceicola sp. nov., isolated from a sea squirt (Halocynthia roretzi). IJSEM 66: 296 - 301 2016 ( DOI 10.1099/ijsem.0.000715 , PubMed 26508418 )
#66792	Julia Koblitz, Joaquim Sardà, Lorenz Christian Reimer, Boyke Bunk, Jörg Overmann: Automatically annotated for the DiASPora project (Digital Approaches for the Synthesis of Poorly Accessible Biodiversity Information) .
#125438	Julia Koblitz, Lorenz Christian Reimer, Rüdiger Pukall, Jörg Overmann: Predicting bacterial phenotypic traits through improved machine learning using high-quality, curated datasets. 2024 ( DOI 10.1101/2024.08.12.607695 )
#125439	Philipp Münch, René Mreches, Martin Binder, Hüseyin Anil Gündüz, Xiao-Yin To, Alice McHardy: deepG: Deep Learning for Genome Sequence Data. R package version 0.3.1 .
#126262	A. Lissin, I. Schober, J. F. Witte, H. Lüken, A. Podstawka, J. Koblitz, B. Bunk, P. Dawyndt, P. Vandamme, P. de Vos, J. Overmann, L. C. Reimer: StrainInfo—the central database for linked microbial strain identifiers. ( DOI 10.1093/database/baaf059 )

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Octadecabacter ascidiaceicola (KCTC 42605, CECT 8868, RA1-3)

Name and taxonomic classification