Endopolyploidy as a potential alternative adaptive strategy for Arabidopsis leaf size variation in response to UV-B.

Using both natural variants and D-cyclin T-DNA mutants, this study demonstrates that endopolyploidy is a highly significant explanatory cellular factor that correlates with the variation of organ size in natural populations, particularly in response to UV-B radiation, and may, therefore, be of adaptive significance in climates with high solar irradiation.

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