Dual internal clocks keep plant defenses on schedule

Time management isn't just important for busy people -- it's critical for plants, too. A new study shows how two biological clocks work together to help plants deal with intermittent demands such as fungal infections, while maintaining an already-packed daily schedule of activities like growth. The researchers also identified a gene that senses disturbances in the 'tick-tock' of one clock, and causes the other clock to tighten its timetable.

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