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种内分化的研究（安息香科）通过比较叶绿体和进化分析。

Intraspecific Differentiation of (Styracaceae) as Revealed by Comparative Chloroplast and Evolutionary Analyses.

机构信息

Co-Innovation Center for Sustainable Forestry in Southern China, College of Life Science, Nanjing Forestry University, Nanjing 210037, China.

State Environmental Protection Scientific Observation and Research Station for Ecology and Environment of Wuyi Mountains, Nanjing 210037, China.

出版信息

Genes (Basel). 2024 Jul 18;15(7):940. doi: 10.3390/genes15070940.

DOI:10.3390/genes15070940
PMID:39062719
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11275416/
Abstract

is a medicinal and ornamental shrub belonging to the Styracaceae family. To explore the diversity and characteristics of the chloroplast genome of , we conducted sequencing and comparison of the chloroplast genomes of four naturally distributed . The results demonstrated that the four chloroplast genomes (157,914-157,962 bp) exhibited a typical quadripartite structure consisting of a large single copy (LSC) region, a small single copy (SSC) region, and a pair of reverse repeats (IRa and IRb), and the structure was highly conserved. DNA polymorphism analysis revealed that three coding genes (, , and ) and five intergene regions (-, -, -, -, and -) were identified as mutation hotspots. These genetic fragments have the potential to be utilized as DNA barcodes for future identification purposes. When comparing the boundary genes, a small contraction was observed in the IR region of four . Selection pressure analysis indicated positive selection for and . These findings collectively suggest the adaptive evolution of . The phylogenetic structure revealed conflicting relationships among several , indicating divergent evolutionary paths within this species. Our study concludes by uncovering the genetic traits of the chloroplast genome in the differentiation of variety, offering fresh perspectives on the evolutionary lineage of this species.

摘要

是安息香科药用和观赏灌木。为了探索的叶绿体基因组的多样性和特征，我们对四个自然分布的进行了测序和比较。结果表明，四个叶绿体基因组（157914-157962bp）呈现出典型的四分体结构，由一个大单拷贝（LSC）区、一个小单拷贝（SSC）区和一对反向重复（IRa 和 IRb）组成，结构高度保守。DNA 多态性分析表明，三个编码基因（、和）和五个基因间区（-、-、-、-和-）被鉴定为突变热点。这些遗传片段有可能被用作未来鉴定目的的 DNA 条形码。在比较边界基因时，四个的 IR 区观察到一个小的收缩。选择压力分析表明和受到正选择。这些发现共同表明的适应性进化。系统发育结构揭示了几个之间存在冲突的关系，表明该物种内存在不同的进化路径。我们的研究结论揭示了叶绿体基因组在分化中的遗传特征，为该物种的进化谱系提供了新的视角。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/287332f6e2b2/genes-15-00940-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/0c1864b356db/genes-15-00940-g0A1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/762d950c9535/genes-15-00940-g0A2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/37dc63edddd0/genes-15-00940-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/69406f1645e5/genes-15-00940-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/4846777b313a/genes-15-00940-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/0227aba03eaf/genes-15-00940-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/073d8ec34d50/genes-15-00940-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/287332f6e2b2/genes-15-00940-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/0c1864b356db/genes-15-00940-g0A1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/762d950c9535/genes-15-00940-g0A2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/37dc63edddd0/genes-15-00940-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/69406f1645e5/genes-15-00940-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/4846777b313a/genes-15-00940-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/0227aba03eaf/genes-15-00940-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/073d8ec34d50/genes-15-00940-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a47f/11275416/287332f6e2b2/genes-15-00940-g006.jpg

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