Study Reveals Flowering Plants Underwent Nine Genome Duplication Bursts During Evolutionary Crises
A new study published in the journal Cell reveals that flowering plants have undergone whole-genome duplication events, transforming into so-called 'hopeful monsters,' during nine distinct periods of environmental crisis over the past 150 million years. Researchers analyzed the genomes of 470 angiosperms and identified 132 independent duplication events, clustering them into nine bursts that correlate with major geological events, including global cooling, warming, and mass extinctions like the asteroid impact that killed the dinosaurs. These polyploid plants, which possess multiple sets of chromosomes, often face biological costs such as reduced fertility but gain survival advantages during catastrophic conditions. While previous research highlighted a single cluster around 66 million years ago, this work demonstrates that such evolutionary responses are more common than previously thought. The findings provide crucial insights into how plant life, including many human food crops, adapts to extreme stress. Scientists suggest this knowledge is vital for predicting how flora might respond to current and future climate change-induced environmental upheavals, offering hope for agricultural resilience.
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Study Reveals Flowering Plants Underwent Nine Genome Duplication Bursts During Evolutionary Crises
A new study published in the journal Cell reveals that flowering plants have undergone whole-genome duplication events, transforming into so-called 'hopeful monsters,' during nine distinct periods of environmental crisis over the past 150 million years. Researchers analyzed the genomes of 470 angiosperms and identified 132 independent duplication events, clustering them into nine bursts that correlate with major geological events, including global cooling, warming, and mass extinctions like the asteroid impact that killed the dinosaurs. These polyploid plants, which possess multiple sets of chromosomes, often face biological costs such as reduced fertility but gain survival advantages during catastrophic conditions. While previous research highlighted a single cluster around 66 million years ago, this work demonstrates that such evolutionary responses are more common than previously thought. The findings provide crucial insights into how plant life, including many human food crops, adapts to extreme stress. Scientists suggest this knowledge is vital for predicting how flora might respond to current and future climate change-induced environmental upheavals, offering hope for agricultural resilience.
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