Journal
SCIENCE
Volume 308, Issue 5726, Pages 1308-1310Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1107976
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The typical scales for plant and fungal movements vary over many orders of magnitude in time and length, but they are ultimately based on hydraulics and mechanics. We show that quantification of the length and time scales involved in plant and fungal motions leads to a natural classification, whose physical basis can be understood through an analysis of the mechanics of water transport through an elastic tissue. Our study also suggests a design principle for nonmuscular hydraulically actuated structures: Rapid actuation requires either small size or the enhancement of motion on large scales via elastic instabilities.
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