title: Pseudovibrio denitrificans strain Z143-1, a heptylprodigiosin-producing bacterium isolated from a Philippine tunicate.
abstract: Microbial isolate Z143-1 found to be associated with an unidentified tunicate was characterized due to its significant antimicrobial activity. Z143-1 is similar to Pseudovibrio ascidiaceicola and Pseudovibrio denitrificans in morphological, physiological and biochemical characteristics, except for its ability to ferment glucose and produce a characteristic red pigment. Fatty acid methyl ester analysis revealed a predominance of the fatty acid 18:1 omega7c at 80.55%, at levels slightly lower than the Pseudovibrio denitrificans type strain DN34(T) (87.7%). The mol% G+C of Z143-1 is 54.02, relatively higher than the Pseudovibrio denitrificans type strain DN34(T) and Pseudovibrio ascidiaceicola with mol% G+C of 51.7 and 51.4, respectively. However, phylogenetic analysis of the 16S rRNA gene sequence of Z143-1 showed 100% similarity with the Pseudovibrio denitrificans type strain DN34(T). In this study, the bacterium Z143-1 is reported as a new strain of Pseudovibrio denitrificans. While there is no report of a secondary metabolite for Pseudovibrio denitrificans, Z143-1 produces the red pigment heptylprodigiosin, also known as 16-methyl-15-heptyl-prodiginine, which shows anti-Staphylococcus aureus activity.
authors.forename: Alice A
authors.initials: AA
authors.lastname: Sertan-de Guzman
authors.forename: Rey Z
authors.initials: RZ
authors.lastname: Predicala
authors.forename: Evelyn B
authors.initials: EB
authors.lastname: Bernardo
authors.forename: Brett A
authors.initials: BA
authors.lastname: Neilan
authors.forename: Sheila P
authors.initials: SP
authors.lastname: Elardo
authors.forename: Gina C
authors.initials: GC
authors.lastname: Mangalindan
authors.forename: Deniz
authors.initials: D
authors.lastname: Tasdemir
authors.forename: Chris M
authors.initials: CM
authors.lastname: Ireland
authors.forename: Wilfredo L
authors.initials: WL
authors.lastname: Barraquio
authors.forename: Gisela P
authors.initials: GP
authors.lastname: Concepcion
mesh_terms: D000818:Animals; D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D005227:Fatty Acids / Q000032:analysis; D020459:Genes, rRNA; D005947:Glucose / Q000378:metabolism; D008969:Molecular Sequence Data; D010679:Philippines; D010802:Phylogeny; D010860:Pigments, Biological / Q000096:biosynthesis; D011353:Prodigiosin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D041902:Rhodobacteraceae / Q000737:chemistry / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid; D014561:Urochordata / Q000382:microbiology*
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005227:Fatty Acids; D010860:Pigments, Biological; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; C473964:heptylprodigiosin; D005947:Glucose; D011353:Prodigiosin