Evidence map›Paper›PMID 23149293›Full record

ArticleGenome research2013

The genome of the pear (Pyrus bretschneideri Rehd.).

Jun Wu, Zhiwen Wang, Zebin Shi, Shu Zhang, Ray Ming, Shilin Zhu, M Awais Khan, Shutian Tao, Schuyler S Korban, Hao Wang and 50 more

Abstract read
In one paragraph

Article in Genome research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 433 papers.

0numbers the graph read from it
0cells of the map it votes in
433citing 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

433 citing papers in PubMed.

  1. Article
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  8. 3D Chromatin Architecture Provides Insights Into Leaf Trait Variation Among Pear Species.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  9. Article
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  12. Whole-genome resequencing of 495Horticulture research · 2026
    Article
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  20. Article

373 more citing papers are in PubMed but not listed here.

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

60 authors.

Jun WuCentre of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China.
Zhiwen Wang
Zebin Shi
Shu Zhang
Ray Ming
Shilin Zhu
M Awais Khan
Shutian Tao
Schuyler S Korban
Hao Wang
Nancy J Chen
Takeshi Nishio
Xun Xu
Lin Cong
Kaijie Qi
Xiaosan Huang
Yingtao Wang
Xiang Zhao
Juyou Wu
Cao Deng
Caiyun Gou
Weili Zhou
Hao Yin
Gaihua Qin
Yuhui Sha
Ye Tao
Hui Chen
Yanan Yang
Yue Song
Dongliang Zhan
Juan Wang
Leiting Li
Meisong Dai
Chao Gu
Yuezhi Wang
Daihu Shi
Xiaowei Wang
Huping Zhang
Liang Zeng
Danman Zheng
Chunlei Wang
Maoshan Chen
Guangbiao Wang
Lin Xie
Valpuri Sovero
Shoufeng Sha
Wenjiang Huang
Shujun Zhang
Mingyue Zhang
Jiangmei Sun
Linlin Xu
Yuan Li
Xing Liu
Qingsong Li
Jiahui Shen
Junyi Wang
Robert E Paull
Jeffrey L Bennetzen
Jun Wang
Shaoling Zhang

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The draft genome of the pear (Pyrus bretschneideri) using a combination of BAC-by-BAC and next-generation sequencing is reported. A 512.0-Mb sequence corresponding to 97.1% of the estimated genome size of this highly heterozygous species is assembled with 194× coverage. High-density genetic maps comprising 2005 SNP markers anchored 75.5% of the sequence to all 17 chromosomes. The pear genome encodes 42,812 protein-coding genes, and of these, ~28.5% encode multiple isoforms. Repetitive sequences of 271.9 Mb in length, accounting for 53.1% of the pear genome, are identified. Simulation of eudicots to the ancestor of Rosaceae has reconstructed nine ancestral chromosomes. Pear and apple diverged from each other ~5.4-21.5 million years ago, and a recent whole-genome duplication (WGD) event must have occurred 30-45 MYA prior to their divergence, but following divergence from strawberry. When compared with the apple genome sequence, size differences between the apple and pear genomes are confirmed mainly due to the presence of repetitive sequences predominantly contributed by transposable elements (TEs), while genic regions are similar in both species. Genes critical for self-incompatibility, lignified stone cells (a unique feature of pear fruit), sorbitol metabolism, and volatile compounds of fruit have also been identified. Multiple candidate SFB genes appear as tandem repeats in the S-locus region of pear; while lignin synthesis-related gene family expansion and highly expressed gene families of HCT, C3'H, and CCOMT contribute to high accumulation of both G-lignin and S-lignin. Moreover, alpha-linolenic acid metabolism is a key pathway for aroma in pear fruit.

Indexed as

Genome, PlantChromosomes, PlantEvolution, MolecularFruitGene DuplicationGenes, PlantGenetic VariationGenotypeMolecular Sequence AnnotationMolecular Sequence DataPhylogenyPlant DiseasesPyrusRepetitive Sequences, Nucleic AcidRosaceaeSequence Analysis, DNA

Identifiers

PMID23149293
PMCPMC3561880

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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 OpenQuestion graph.