Phaseolus coccineus (bean)

Film 12 Circumnutation of one-week-old bean seedlings. Visible initiation of circumnutation by the developing young shoots. The film presents two days of filming. Turning off the light 20:00, turning on the light 04:00.

Film 13 Circumnutation of one-week-old bean seedlings - top view. Visible initiation of circumnutation by the developing young shoots. The film presents three days of filming. Turning off the light 20:00, turning on the light 04:00. Very well visible circular shape and counter-clockwise direction of circumnutation. The period is approx. 90 minutes.

Film 14 Circumnutation of shoots of beans during 5 days of filming. The circumnutation function is to look for a support. Visible wrapping of the shoots around the support. Period of circumnutation approx. 90 minutes. Turning off the light 20:00, turning on the light 04:00. Visible daily rhythm of the nyctinastic movements of the leaves, lowering the leaves at dusk and raising at dawn. Lowering of leaves approx. 19:00-20:00 hour and raising approx. 03:00-04:00. Anticipation of the dusk, well visible.

Film 15 Circumnutation of shoots of beans during 5 days of filming. Very well visible circular shape and counter-clockwise direction of circumnutation. The period is approx. 90 minutes. Turning off the light 20:00, turning on the light 04:00.

Film 16 Circumnutation of shoot of beans during two days of filming. Beans kept in continuous light. The circumnutation is looking for a support. Visible wrapping of the shoot around the support. Period of circumnutation approx. 90 minutes. Also visible circadian rhythm of the nyctinastic movements of the leaves. This rhythm is a manifestation of the work of the circadian biological clock.