Open AccessMitochondrial genomes of yeasts of the Y arrowia clade
Author(s) -
Gaillardin Claude,
Neuvéglise Cécile,
Kerscher Stefan,
Nicaud JeanMarc
Publication year - 2012
Publication title -
fems yeast research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 92
eISSN - 1567-1364
pISSN - 1567-1356
DOI - 10.1111/j.1567-1364.2011.00782.x
Subject(s) - yarrowia , biology , genetics , genome , mitochondrial dna , gene , intron , phylogenetic tree , clade , orfs , phylogenetics , open reading frame , peptide sequence
C andida alimentaria , C andida deformans , C andida galli , and C andida phangngensis have been recently reported to be the close relatives of Y arrowia lipolytica . To explore this clade of yeasts, we sequenced the mitochondrial genome (mt DNA ) of these four species and compared it with the mt DNA of Y . lipolytica . The five mt DNA s exhibit a similar architecture and a high level of similarity of protein coding sequences. Genome sizes are variable, ranging from 28 017 bp in C . phangngensis to 48 508 bp in C . galli , mainly because of the variations in intron size and number. All introns are of group I , except for a group II intron inserted in the cob gene of a single species, C . galli . Putative endonuclease coding sequences were present in most group I introns, but also twice as free‐standing ORF s in C . galli . Phylogenetic relationships of the five species were explored using protein alignments. No close relative of the Y arrowia clade could be identified, but protein and rRNA gene orders were partially conserved in the mt DNA of C andida salmanticensis .