Project description:Transcriptome and expression analysis of genes related to reg-ulatory mechanisms in holly (Ilex dabieshanensis) under cold stress

| PRJNA897070 | ENA

Molecular Evidence for the Hybrid Origin of Ilex dabieshanensis (Aquifoliaceae).

Project description:Ilex, the largest genus of dioecious woody plants, is a good study system to assess the role of hybridization in speciation and evolution. Ilex dabieshanensis, a tree endemic to Dabieshan Mountains region, was initially described as a new species. Based on morphological intermediacy and sympatric distribution with its putative parental species, I. cornuta and I. latifolia, we proposed it as a natural hybrid between them. In this study, we sequenced one chloroplast intergenic spacer (trnH-psbA) and two nuclear genes (gapC and nepGS) in I. dabieshanensis and its putative parental species to test the hybrid origin hypothesis. Our results showed that there were one to two differentially fixed sequence differences between I. cornuta and I. latifolia at the two nuclear genes. Twelve of the 14 individuals of I. dabieshanensis exhibited additivity in chromatograms on these differentially fixed sites at both nuclear genes, and the remaining two exhibited additivity in chromatograms on the fixed site at only the nepGS gene. Except one haplotype of I. cornuta at the nepGS gene, all of the haplotypes of I. cornuta at the two nuclear genes were well separated from those of I. latifolia, and most haplotypes of I. dabieshanensis were shared with those of I. cornuta and I. latifolia. Phylogenetic analysis of these haplotypes was largely consistent with haplotype network analysis. I. cornuta and I. latifolia differed by two nucleotide substitutions in the chloroplast intergenic spacer, and 12 individuals of I. dabieshanensis had the same sequences as I. latifolia, while the remaining two were identical with I. cornuta. The molecular data provide convincing evidence for the hybrid origin of I. dabieshanensis and asymmetrical direction of hybridization. One haplotype of I. cornuta at the nepGS gene was nested with those of I. latifolia, indicating introgression to I. cornuta.

| S-EPMC4725680 | biostudies-literature

The complete mitochondrial genome sequence of <i>Rana dabieshanensis</i> (Anura: Ranidae).

Project description:Rana dabieshanensis is a species of frog within the family Ranidae. In this study, we assembled a complete mitochondrial genome (mito-genome) for R. dabieshanensis by high-throughput sequencing technology. It is 18,291 bp and includes 13 protein-coding genes, 22 tRNA genes, two rRNA genes and one control region. The nucleotide composition is A: 27.0%, T: 28.6%, C: 29.3% and G: 15.2%. Two overlaps among the 13 protein-coding genes were found: ATP8/ATP6, ND4L/ND4. The study of phylogenetic analysis based on complete mitochondrial genome showed that there was close genetic relationship between R. dabieshanensis and R. omeimontis and it is useful for systematic analyses of genus Rana.

| S-EPMC8291061 | biostudies-literature

Project description:The complete mitogenome of Rana dabieshanensis

| PRJNA690202 | ENA