Gravity Factor for Auxin Transport

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Science  10 Aug 1962:
Vol. 137, Issue 3528, pp. 432-433
DOI: 10.1126/science.137.3528.432


The elongating internodes of the axis of a vigorous dicotyledonous plant develop strong curvatures if the tropistic effect of gravity is eliminated on a clinostat. Similar curvatures are produced by unbalancing either the supply of auxin or its transport paths, but only in the absence of unidirectional gravity as a distributive force.