A phylogenetic analysis of the Korean endemic species Paraphlomis koreana (Lamiaceae) inferred from nuclear and plastid DNA sequences

IF 0.8 Q4 PLANT SCIENCES KOREAN JOURNAL OF PLANT TAXONOMY Pub Date : 2023-06-30 DOI:10.11110/kjpt.2023.53.2.157
Eun-Kyeong Han, Jung-Hyun Kim, Jin-Seok Kim, C. Hyun, D. Son, G. Chung, Amarsanaa Gantsetseg, Jung-Hyun Lee, In-Su Choi
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Abstract

Paraphlomis koreana (Lamiaceae) was newly named and added to Korean flora in 2014. Paraphlomis belongs to the tribe Paraphlomideae, along with Ajugoides and Matsumurella. However, a recent study has suggested that P. koreana is morphologically similar to Matsumurella chinensis, making them difficult to distinguish from each other. Therefore, we aimed to examine the phylogenetic placement of P. koreana within the tribe and compare its genetic relationship with M. chinensis. We sequenced an additional complete plastid genome for an individual of P. koreana and generated sequences of nuclear ribosomal (nr) DNA regions of internal and external transcribed spacers (ITS and ETS) for two individuals of P. koreana. Maximum likelihood analyses based on two nrDNA regions (ITS and ETS) and four plastid DNA markers (rpl16 intron, rpl32-trnL, rps16 intron, and trnL-F) covering 13 Paraphlomis species and M. chinensis were conducted. Phylogenetic analyses concordantly supported that P. koreana forms a monophyletic group with M. chinensis. Moreover, our study revealed that P. koreana includes nrDNA sequences of M. chinensis as minor intraindividual variants, suggesting that the genetic divergence between the two taxa is incomplete and may represent intraspecific variation rather than distinct species. In conclusion, our findings suggest that the independent species status of P. koreana within Paraphlomis should be reconsidered.
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韩国特有种韩国白齿蕨(Lamiaceae)的核与质体DNA序列分析
朝鲜副根皮菌(Lamiaceae)于2014年被新命名并加入韩国植物区系。Paraferomis与Ajugoides和Matsumurella同属Paraferomidae部落。然而,最近的一项研究表明,P.koreana在形态上与中国松相似,这使得它们很难区分。因此,我们的目的是研究朝鲜P.koreana在部落中的系统发育位置,并比较其与中国M.chinensis的遗传关系。我们对一个P.koreana个体的额外完整质体基因组进行了测序,并为两个P.korean个体生成了内部和外部转录间隔区(ITS和ETS)的核核糖体(nr)DNA区域序列。基于两个nrDNA区域(ITS和ETS)和四个质体DNA标记(rpl16内含子、rpl32-trnL、rps16内含子和trnL-F)进行了最大似然分析。系统发育分析一致地支持了P.koreana与M.chinensis形成一个单系群。此外,我们的研究表明,P.koreana包含M.chinensis的nrDNA序列作为微小的个体内变异,这表明两个分类群之间的遗传差异是不完整的,可能代表种内变异,而不是不同的物种。总之,我们的研究结果表明,应该重新考虑金皮属植物中P.koreana的独立物种地位。
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来源期刊
KOREAN JOURNAL OF PLANT TAXONOMY
KOREAN JOURNAL OF PLANT TAXONOMY Agricultural and Biological Sciences-Plant Science
CiteScore
1.50
自引率
40.00%
发文量
23
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