Journal
FRONTIERS IN MICROBIOLOGY
Volume 12, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fmicb.2021.646567
Keywords
Hannaella; mitochondrial genome; protein coding gene; repeat sequence; gene rearrangement; phylogenetic analysis 3
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Funding
- Outstanding Youth Fund of Sichuan Province [2019JDJQ0034]
- Liangshan Science and Technology and Intellectual Property Office Project [17NYCX0023]
- Talent Fund of Sichuan Academy of Agricultural Sciences [2019QYXK003]
- High Tech Field Expansion Project of Sichuan Academy of Agricultural Sciences [2018GXTZ-001]
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The study sequenced the mitogenome of Hannaella oryzae using next-generation sequencing, revealing insights into its genetics and evolutionary relationships. Further research will contribute to understanding the population genetics, taxonomy, and evolutionary biology of this species and related organisms.
In this study, the mitogenome of Hannaella oryzae was sequenced by next-generation sequencing (NGS) and successfully assembled. The H. oryzae mitogenome comprised circular DNA molecules with a total size of 26,444 bp. We found that the mitogenome of H. oryzae partially deleted the tRNA gene transferring cysteine. Comparative mitogenomic analyses showed that intronic regions were the main factors contributing to the size variations of mitogenomes in Tremellales. Introns of the cox1 gene in Tremellales species were found to have undergone intron loss/gain events, and introns of the H. oryzae cox1 gene may have different origins. Gene arrangement analysis revealed that H. oryzae contained a unique gene order different from other Tremellales species. Phylogenetic analysis based on a combined mitochondrial gene set resulted in identical and well-supported topologies, wherein H. oryzae was closely related to Tremella fuciformis. This study represents the first report of mitogenome for the Hannaella genus, which will allow further study of the population genetics, taxonomy, and evolutionary biology of this important phylloplane yeast and other related species.
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