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- Title
Characterizing complete mitochondrial genome of Aquilegia amurensis and its evolutionary implications.
- Authors
Xu, Luyuan; Wang, Jinghan; Zhang, Tengjiao; Xiao, Hongxing; Wang, Huaying
- Abstract
Background: Aquilegia is a model system for studying the evolution of adaptive radiation. However, very few studies have been conducted on the Aquilegia mitochondrial genome. Since mitochondria play a key role in plant adaptation to abiotic stress, analyzing the mitochondrial genome may provide a new perspective for understanding adaptive evolution. Results: The Aquilegia amurensis mitochondrial genome was characterized by a circular chromosome and two linear chromosomes, with a total length of 538,736 bp; the genes included 33 protein-coding genes, 24 transfer RNA (tRNA) genes and 3 ribosomal RNA (rRNA) genes. We subsequently conducted a phylogenetic analysis based on single nucleotide polymorphisms (SNPs) in the mitochondrial genomes of 18 Aquilegia species, which were roughly divided into two clades: the European-Asian clade and the North American clade. Moreover, the genes mttB and rpl5 were shown to be positively selected in European-Asian species, and they may help European and Asian species adapt to environmental changes. Conclusions: In this study, we assembled and annotated the first mitochondrial genome of the adaptive evolution model plant Aquilegia. The subsequent analysis provided us with a basis for further molecular studies on Aquilegia mitochondrial genomes and valuable information on adaptive evolution in Aquilegia.
- Subjects
MITOCHONDRIAL DNA; BIOLOGICAL evolution; ADAPTIVE radiation; TRANSFER RNA; SINGLE nucleotide polymorphisms; CHROMOSOMES
- Publication
BMC Plant Biology, 2024, p1
- ISSN
1471-2229
- Publication type
Article
- DOI
10.1186/s12870-024-04844-9