{"title":"Identification of Indigenous Thai <i>Phlegmariurus</i> Genotypic Population by Integrating Morphological and Molecular Studies.","authors":"Nusanisa Chedao, Avinash Chandra Pandey, Potjamarn Suraninpong","doi":"10.3390/plants14091400","DOIUrl":null,"url":null,"abstract":"<p><p><i>Phlegmariurus</i>, a diverse genus within the Lycopodiaceae family, has wide diversity in tropical regions, including Thailand. Accurate species delimitation in the tropical clubmoss genus <i>Phlegmariurus</i> is challenged by high morphological plasticity and genetic complexity. This study applied an integrative multilocus approach combining morphometric analysis of 27 complete specimens, 35 <i>Phlegmariurus</i> and <i>one Lycopodiella</i> accessions for AFLP genotyping (926 loci; PIC 0.32), SSR profiling (44 loci; PIC 0.57; expected heterozygosity 0.35), and chloroplast barcoding using <i>rbcL</i> (1308 bp; bootstrap 89-99%) and the <i>psbA</i>-<i>trnH</i> intergenic spacer (308 bp; bootstrap ≥ 94%). A total of 13 were identified as belonging to seven known species, including <i>P. nummulariifolius</i> (NST01, NST15, NST36), <i>P. goebelii</i> (JP04), <i>P. phlegmaria</i> (NST13), <i>P. verticillatus</i> (PHI16), <i>P. squarrosus</i> (NST21, NST22, MY31), <i>P. tetrastichus</i> (NST30), and <i>P. carinatus</i> (MY32, MY33, NST34). Morphological clustering and molecular markers consistently distinguished <i>Phlegmariurus</i> accessions from the <i>Lycopodiella</i> outgroup. Additionally, 19 previously unclassified <i>Phlegmariurus</i> accessions were successfully identified as belonging to the species <i>P. nummulariifolius</i> (NST23), <i>P. goebelii</i> (NST03, JP05, STN12, PNA14, SKA25, CPN26, KRB27, PNA28), <i>P. phlegmaria</i> (NWT07, STN08, NST09, NST10, PHI29), <i>P. squarrosus</i> (NST17), and <i>P. carinatus</i> (PNA06, STN18, CPN19, JP24). Moreover, this study identified three novel lineages (NST02, STN11, NST20) with strong support across datasets. The combination of broad genomic coverage (AFLP), fine-scale allelic resolution (SSR), deep-branch backbone (<i>rbcL</i>), and terminal-branch discrimination (<i>psb</i>A-<i>trn</i>H) yields a robust framework for species identification. These results define clear operational units for conservation prioritization and establish a foundation for marker-assisted development of ornamental <i>Phlegmariurus</i> cultivars.</p>","PeriodicalId":56267,"journal":{"name":"Plants-Basel","volume":"14 9","pages":""},"PeriodicalIF":4.0000,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12073110/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plants-Basel","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3390/plants14091400","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Phlegmariurus, a diverse genus within the Lycopodiaceae family, has wide diversity in tropical regions, including Thailand. Accurate species delimitation in the tropical clubmoss genus Phlegmariurus is challenged by high morphological plasticity and genetic complexity. This study applied an integrative multilocus approach combining morphometric analysis of 27 complete specimens, 35 Phlegmariurus and one Lycopodiella accessions for AFLP genotyping (926 loci; PIC 0.32), SSR profiling (44 loci; PIC 0.57; expected heterozygosity 0.35), and chloroplast barcoding using rbcL (1308 bp; bootstrap 89-99%) and the psbA-trnH intergenic spacer (308 bp; bootstrap ≥ 94%). A total of 13 were identified as belonging to seven known species, including P. nummulariifolius (NST01, NST15, NST36), P. goebelii (JP04), P. phlegmaria (NST13), P. verticillatus (PHI16), P. squarrosus (NST21, NST22, MY31), P. tetrastichus (NST30), and P. carinatus (MY32, MY33, NST34). Morphological clustering and molecular markers consistently distinguished Phlegmariurus accessions from the Lycopodiella outgroup. Additionally, 19 previously unclassified Phlegmariurus accessions were successfully identified as belonging to the species P. nummulariifolius (NST23), P. goebelii (NST03, JP05, STN12, PNA14, SKA25, CPN26, KRB27, PNA28), P. phlegmaria (NWT07, STN08, NST09, NST10, PHI29), P. squarrosus (NST17), and P. carinatus (PNA06, STN18, CPN19, JP24). Moreover, this study identified three novel lineages (NST02, STN11, NST20) with strong support across datasets. The combination of broad genomic coverage (AFLP), fine-scale allelic resolution (SSR), deep-branch backbone (rbcL), and terminal-branch discrimination (psbA-trnH) yields a robust framework for species identification. These results define clear operational units for conservation prioritization and establish a foundation for marker-assisted development of ornamental Phlegmariurus cultivars.
Plants-BaselAgricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics
CiteScore
6.50
自引率
11.10%
发文量
2923
审稿时长
15.4 days
期刊介绍:
Plants (ISSN 2223-7747), is an international and multidisciplinary scientific open access journal that covers all key areas of plant science. It publishes review articles, regular research articles, communications, and short notes in the fields of structural, functional and experimental botany. In addition to fundamental disciplines such as morphology, systematics, physiology and ecology of plants, the journal welcomes all types of articles in the field of applied plant science.