Evidence map›Paper›PMID 30167928›Full record

ArticleJournal of plant research2018

Phylogenetic analysis reveals the origins of tetraploid and hexaploid species in the Japanese Lepisorus thunbergianus (Polypodiaceae) complex.

Tao Fujiwara, Shunsuke Serizawa, Yasuyuki Watano

Abstract read
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In one paragraph

Article in Journal of plant research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
3.5field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 14 citations in OpenAlex.

  1. Chromosome-level genome assembly of the Gerbera (Gerbera hybrida) using HiFi long-read and Hi-C technologies.DNA research : an international journal for rapid publication of reports on genes and genomes · 2026
    Article
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  4. PhytoKeys · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Tao FujiwaraDepartment of Biology, Graduate School of Science, Chiba University, Yayoi-cho, Inage, Chiba, 263-8522, Japan. taofujiwara@xtbg.ac.cn.
Shunsuke SerizawaAichi Green Association, Urahata 198-1, Nagamaki, Oharu-sho, Aichi, 490-1131, Japan.
Yasuyuki WatanoDepartment of Biology, Graduate School of Science, Chiba University, Yayoi-cho, Inage, Chiba, 263-8522, Japan.
Chiba University · JP

Funding

Japan Society for the Promotion of Science a Grant-in-Aid for JSPS Fellows Grant Number 15J03
6 · The paper itself

Abstract

The Japanese Lepisorus thunbergianus complex contains diploid and tetraploid races of L. thunbergianus and a hexaploid species, L. mikawanus. Here, we performed molecular phylogenetic analysis on this complex to delimit species and to elucidate the evolutionary origins of tetraploid and hexaploid species. Chloroplast DNA (cpDNA) phylogeny supported the monophyly of the complex. Based on a single-copy nuclear gene (PgiC) tree, the tetraploid L. thunbergianus samples could be classified into two variants: an allotetraploid of hybrid origin between diploid L. thunbergianus and Japanese L. angustus and another allotetraploid of hybrid origin between diploid L. thunbergianus and an unknown diploid race of L. tosaensis. These variants can be recognized morphologically and distinguished from their parent species. Hence, here we described these allopolyploids as new species, L. nigripes and L. kuratae, respectively. The hexaploid species L. mikawanus has three types of PgiC alleles, each of which was derived from diploid L. thunbergianus, L. tosaensis, and Japanese L. angustus, while cpDNA shows that it is included in Japanese L. thunbergianus clade. Based on the cpDNA phylogeny and PgiC nucleotide sequences, we therefore concluded that L. mikawanus is an allohexaploid that originated through hybridization between tetraploid species, L. nigripes and an unknown ancestral diploid race of L. tosaensis.

Indexed as

PolyploidyTetraploidyDNA, ChloroplastDNA, PlantEvolution, MolecularJapanPhylogenyPolypodiaceaeSequence Analysis, DNADNA, ChloroplastDNA, PlantAllopolyploidyFernHybrid originLepisorusSpecies ComplexTaxonomy

Identifiers

PMID30167928
OpenAlexW2888501311

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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 OpenQuestion graph.