Molecular feedback loop gives clues to how flowers drop their petals

As Valentine's Day fades into the past, you may be noticing a surfeit of petals accumulate around your vase of flowers. A new study from the University of Missouri sheds new light on the process that governs how and when plants shed their petals, a process known as abscission. The findings are reported this week in the online Early Edition of the Proceedings of the National Academy of Sciences.

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