Stress and hormone interrelationship in branch growth.
Calculated stress patterns in lateral branches place the locations of maximum flexural stresses at the same places as the maximum concentrations of growth hormones. The gradients of stress and hormone concentration also have similarity.In branch epinasty and negative geotropism of branches, the directions of the stress vectors correlate with the imbalance of auxin in the upper and lower portions of the branches.
Doerner
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