Biodiversity
Plant gene duplicates after polyploidy cycles
Open access · cc by · source: Europe PMC
Across plant genomes, WGD and other duplication modes leave distinct, lineage-biased duplicate landscapes.
How this study connects
Role on claims
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Multiple empirical papers in this library examine biodiversity with mechanistic biological findings.
Evidence for the claim as stated.
Recent WGDs retain more WGD pairs; Brassicas show frequent WGT; modes vary by clade.
Evidence for the claim as stated.
Systems and scales differ across biodiversity studies (species, tissues, methods), so mechanisms should not be over-generalised.
Evidence for the claim as stated.
Open questions
Tensions this paper is part of
From concept pages' “where studies disagree.” Disagreement means the same question; scope means different assays, populations, or outcomes.
Systems and scales differ across biodiversity studies (species, tissues, methods), so mechanisms should not be over-generalised.
Study at a glance
- Design
- Computational / modelling — Classified duplicate genes across sequenced plant genomes into WGD and single-gene modes
- N
- N=141 · 141 sequenced plant genomes
- Population
- Sequenced plant genomes across the plant kingdom
- Outcome
- Modes of gene duplication after polyploidization–diploidization cycles
Structured fields used in claim comparison tables when every cited study has a complete layer.
Inspect source passages
Plant gene duplicates after polyploidy cycles
These passages occur verbatim in the stored paper text. They support the points listed below; they do not verify every statement in the explanation.
141 sequenced plant genomes.
The otherwise compact ciliate ( Paramecium tetraurelia ) genome (72 Mb) has nonetheless retained a high number of gene sets (40,000) after at least three successive whole-genome duplications [–].
WGD, tandem, proximal, transposed, dispersed.
D (defined as 1R and 2R) at least ~ 450 million years ago (Mya) [–]—about 20–30% of human genes are thought to be paralogs produced by these two WGDs, and these “ohnologs” have a strong association with human disease [,
Key findings
Recent WGDs retain more WGD pairs; Brassicas show frequent WGT; modes vary by clade.
Methodology
Classified duplicates in 141 plant genomes into WGD, tandem, proximal, transposed, and dispersed classes.
Limitations
Classification depends on algorithms/parameters; not every pair’s function is tested.
Related papers in this topic
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