Evidence map›Paper›PMID 40533651›Full record

ArticleNature plants2025

Evolution and functioning of an X-A balance sex-determining system in hops.

Takashi Akagi, Tenta Segawa, Rika Uchida, Hiroyuki Tanaka, Kenta Shirasawa, Noriko Yamagishi, Hajime Yaegashi, Satoshi Natsume, Hiroki Takagi, Akira Abe and 13 more

Abstract read
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In one paragraph

Article in Nature plants, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

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

6 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Sex-specific ethylene responses drive floral sexual plasticity in Cannabis sativa.The Plant journal : for cell and molecular biology · 2026
    Article
  5. Article
  6. Article
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

23 authors.

Takashi Akagi *Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan. claclatakashi@gmail.com.ORCID 0000-0001-9993-8880
Tenta Segawa *Suntory Global Innovation Center Ltd, Kyoto, Japan.ORCID 0000-0002-1286-5090
Rika UchidaGraduate School of Environmental and Life Science, Okayama University, Okayama, Japan.
Hiroyuki TanakaSchool of Life Science and Technology, Institute of Science Tokyo, Tokyo, Japan.
Kenta ShirasawaKazusa DNA Research Institute, Kisarazu, Japan.ORCID 0000-0001-7880-6221
Noriko YamagishiFaculty of Agriculture, Iwate University, Morioka, Japan.
Hajime YaegashiFaculty of Agriculture, Iwate University, Morioka, Japan.ORCID 0000-0002-9395-8060
Satoshi NatsumeIwate Biotechnology Research Center, Kitakami, Japan.ORCID 0000-0003-1033-0073
Hiroki TakagiIwate Biotechnology Research Center, Kitakami, Japan.
Akira AbeIwate Biotechnology Research Center, Kitakami, Japan.ORCID 0000-0002-0344-2643
Miki OkunoDivision of Microbiology, Department of Infectious Medicine, Kurume University School of Medicine, Kurume, Japan.ORCID 0000-0002-6164-1878
Atsushi ToyodaAdvanced Genomics Center, National Institute of Genetics, Mishima, Japan.ORCID 0000-0002-0728-7548
Kyoko SatoFaculty of Science, Academic Assembly, University of Toyama, Gofuku, Japan.ORCID 0000-0002-2539-3029
Yuka HonnidenGraduate School of Environmental and Life Science, Okayama University, Okayama, Japan.
Cheng ZhangGraduate School of Environmental and Life Science, Okayama University, Okayama, Japan.
Koichiro UshijimaGraduate School of Environmental and Life Science, Okayama University, Okayama, Japan.ORCID 0000-0003-3904-5663
Josef PatzakHop Research Institute Co. Ltd, Žatec, Czech Republic.
Lucie HorákováDepartment of Plant Developmental Genetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic.ORCID 0009-0006-0656-6859
Václav BačovskýDepartment of Plant Developmental Genetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic.ORCID 0000-0001-7621-8936
Roman HobzaDepartment of Plant Developmental Genetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic.
Deborah CharlesworthInstitute of Ecology and Evolution, University of Edinburgh, Edinburgh, UK.ORCID 0000-0002-3939-9122
Takehiko ItohSchool of Life Science and Technology, Institute of Science Tokyo, Tokyo, Japan. takehiko@life.isct.ac.jp.ORCID 0000-0002-6113-557X
Eiichiro OnoSuntory Global Innovation Center Ltd, Kyoto, Japan. Eiichiro_Ono@suntory.co.jp.ORCID 0000-0003-0238-6480

Funding

MEXT | Japan Society for the Promotion of Science (JSPS) 22H02598MEXT | Japan Society for the Promotion of Science (JSPS) 22H05172 and 22H05173MEXT | Japan Society for the Promotion of Science (JSPS) 22H05181MEXT | JST | Precursory Research for Embryonic Science and Technology (PRESTO) JPMJPR20D1
6 · The paper itself

Abstract

Chromosomal sex-determining systems with male heterogamety include actively male-determining-Y and X-A balance systems, both of which are found in animals and plants. The sex-determining genes have been identified in several active-Y plant systems, but the evolution and functioning of X-A balance systems remains mysterious. Here we sequenced and compared the genomes of two hop species. The evolution of the hop X-A balance system involved an ancient recombination suppression event across a large X chromosome region shared by both species. In one species, an autosome fused to this ancestral sex chromosome, and recombination was subsequently suppressed again. The two evolutionary strata created in this neo-X have degenerated to different degrees and evolved correspondingly different dosage compensation levels that correlate with histone modification patterns. Finally, we identified an X-specific ETR1-like ethylene receptor in the ancestral X region. Its dosage may affect sex determination, as part of the counting mechanism of this X-A balance system.

Indexed as

Chromosomes, PlantEvolution, MolecularHumulusSex Determination ProcessesDosage Compensation, GeneticGenome, Plant

Identifiers

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.