Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 311

The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.

Protein-coding genes are epigenetically regulated in Arabidopsis polyploids

Open access
Lee, Hyeon-Se, Chen, Z. Jeffrey·2001·Proceedings of the National Academy of Sciences

Abstract

The fate of redundant genes resulting from genome duplication is poorly understood. Previous studies indicated that ribosomal RNA genes from one parental origin are epigenetically silenced during interspecific hybridization or polyploidization. Regulatory mechanisms for protein-coding genes in polyploid genomes are unknown, partly because of difficulty in studying expression patterns of homologous genes. Here we apply amplified fragment length polymorphism (AFLP)–cDNA display to perform a genome-wide screen for orthologous genes silenced in Arabidopsis suecica , an allotetraploid derived from Arabidopsis thaliana and Cardaminopsis arenosa . We identified ten genes that are silenced from either A. thaliana or C. arenosa origin in A. suecica and located in four of the five A. thaliana chromosomes. These genes represent a variety of RNA and predicted proteins including four transcription factors such as TCP3. The silenced genes in the vicinity of TCP3 are hypermethylated and reactivated by blocking DNA methylation, suggesting epigenetic regulation is involved in the expression of orthologous genes in polyploid genomes. Compared with classic genetic mutations, epigenetic regulation may be advantageous for selection and adaptation of polyploid species during evolution and development.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.121064698

Cites

36 of 36 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 36 references

Cited by

See all 311

Metadata

Authors
Lee, H.-S., & Chen, Z. J.
Venue
Proceedings of the National Academy of Sciences
Published
2001-05-22
Volume
98
Issue
12
Pages
6753-6758
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1975404287
Cited by
311
References
36
FWCI
32.23
Type
journal article
Language
en
Open access
green

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Protein-coding genes are epigenetically regulated in Arabidopsis polyploids. https://app.cochat.ai/papers/10.1073/pnas.121064698
The paper
Lee, H.-S., & Chen, Z. J. (2001). Protein-coding genes are epigenetically regulated in Arabidopsis polyploids. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.121064698

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.