Related Experiment Video
Updated: Jun 10, 2026
10:04
Establishment of Proliferative Tetraploid Cells from Nontransformed Human Fibroblasts
Published on: January 8, 2017
A three-step model for the establishment of polyploid plants
Dries Bonte1, Yves Van de Peer2
1Department of Biology, Terrestrial Ecology Unit, Ghent University, 9000 Ghent, Belgium.
Current Biology : CB
|June 8, 2026
Summary
Polyploidy, or whole genome duplication, often leads to early plant success but long-term decline. A new Supply-Bridging-Consolidation framework explains why few polyploids persist over evolutionary timescales.
Area of Science:
- Evolutionary Biology
- Genetics
- Plant Science
Background:
- Polyploidy (whole genome duplication) is common in plants but often leads to extinction over long timescales, creating the 'polyploid paradox'.
- Genomic evidence for long-term polyploid success is rare within individual plant lineages, despite widespread occurrence.
Purpose of the Study:
- To propose a unified framework, Supply-Bridging-Consolidation (SBC), explaining the 'polyploid paradox' of early success followed by long-term decline.
- To provide a model that clarifies the conditions under which polyploids flourish and falter over macroevolutionary timescales.
Main Methods:
- The study proposes a conceptual framework (SBC) integrating rates of polyploid origin (Supply), persistence mechanisms (Bridging), and long-term evolutionary outcomes (Consolidation).
- The framework emphasizes demographic assembly and ecological opportunity as drivers of polyploid establishment, with adaptation often following, not preceding, success.
Main Results:
- The SBC framework suggests polyploid success is initially driven by increased gamete formation and relaxed ecological filtering during stressful conditions.
- Bridging involves short-term variation or long-term persistence of rare cytotypes, while Consolidation determines if polyploids achieve niche divergence or face extinction.
- Ultimately, few polyploids achieve long-term macroevolutionary success due to persistent costs, despite initial advantages.
Conclusions:
- The SBC framework offers a unified explanation for the transient success and eventual rarity of polyploids in the fossil record.
- Polyploid persistence depends on a sequence of events: origin (Supply), establishment (Bridging), and long-term evolutionary fate (Consolidation).
- Understanding these stages is key to predicting when polyploid lineages will thrive or disappear over evolutionary time.
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