Clues to how plants evolved to cope with cold

Researchers have found new clues to how plants evolved to withstand wintry weather. Scientists constructed an evolutionary tree of more than 32,000 species of flowering plants — the largest time-scaled evolutionary tree to date. By combining their tree with freezing exposure records and leaf and stem data, the researchers were able to reconstruct how plants evolved to cope with cold as they spread across the globe.
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Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/iFI3_ZXT47M/131222161805.htm

    

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