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ArticleMolecular biology reports2025

Complete Chloroplast genome of Mentha aquatica reveals hypervariable regions and resolves phylogenetic position within the genus Mentha.

Aboozar Soorni, Mohammad Mehdi Golchini

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Article in Molecular biology reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

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21citing papers in PubMed
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3 · Its place in the literature

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21 citing papers in PubMed.

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  13. The complete chloroplast genome sequences of Korean NativeMitochondrial DNA. Part B, Resources · 2026
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  14. The complete chloroplast genome sequence ofMitochondrial DNA. Part B, Resources · 2026
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  16. The complete chloroplast genome of the salt-tolerant plantMitochondrial DNA. Part B, Resources · 2026
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  17. Article
  18. Characterization of the complete chloroplast genome ofMitochondrial DNA. Part B, Resources · 2026
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  19. Comprehensive plastome variation and RNA editing inFrontiers in plant science · 2026
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  20. Article
4 · The record

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5 · Who and what money

Authors and funding

2 authors.

Aboozar SoorniDepartment of Biotechnology, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, Iran. soorni@iut.ac.ir.
Mohammad Mehdi GolchiniDepartment of Biotechnology, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe genus Mentha (Lamiaceae) encompasses economically and medicinally important aromatic herbs, yet its taxonomy remains complex due to frequent hybridization, polyploidy, and morphological plasticity. Chloroplast (cp.) genomes emerged as powerful tools for resolving phylogenetic relationships, but no complete cp. genome of Mentha aquatica from Iran has been available. METHODS AND

resultsIn this study, we sequenced and assembled the first complete cp. genome of M. aquatica from Iran using Illumina sequencing. The resulting circular genome measured 152,077 bp and exhibited a typical quadripartite structure, consisting of a large single-copy region (83,212 bp), a small single-copy region (17,665 bp), and two inverted repeats (25,600 bp each). Annotation revealed 132 functional genes, including 87 protein-coding genes, 37 tRNAs, and 8 rRNAs. Comparative analyses with other Mentha species showed conserved gene content but detected structural variations at IR-LSC/SSC boundaries, particularly in the positioning of rps19 and trnN. Nucleotide diversity (Pi) analysis identified hypervariable regions, with ycf1 and *rpl2-trnH* displaying the highest polymorphism, suggesting their potential as DNA barcodes. Phylogenetic reconstruction based on complete cp. genomes placed M. aquatica in a strongly supported clade with M. canadensis, indicating recent divergence, while the broader Mentha lineage formed a monophyletic group distinct from related genera. The ycf1 locus demonstrated high discriminatory power, generating phylogenies consistent with whole-genome analyses, whereas rpl14 provided limited resolution.

conclusionsThis study established a foundational genomic resource for M. aquatica, advancing phylogenetic and biogeographic research within Mentha, and highlighted the utility of cp. genomes and hypervariable loci for species identification and evolutionary studies in this taxonomically challenging genus.

Indexed as

Genome, ChloroplastMenthaChloroplastsDNA, ChloroplastIranPhylogenySequence Analysis, DNADNA, ChloroplastChloroplast DNA (cpDNA)Hotspot regionsIR boundary shiftMentha speciesMolecular markers

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.