title: Tropic reversal in Phycomyces.
abstract: Phototropic reversal of Phycomyces sporangiophores can be elicited by a change to darkness during steady-state phototropism. The reversal lasts 25-30 min under these conditions. Control experiments show that the reversal is not caused by gravitropism. Tropic reversal is also elicited by the removal of a barrier during an avoidance response, showing that the reversal occurs at the output of the sensory transduction chain.
authors.affiliation: Abteilung Trautner, Max-Planck-Institut für Molekulare Genetik, Ihnestrasse 63-73, D-1000, Berlin-West 33, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Galland
authors.forename: V E
authors.initials: VE
authors.lastname: Russo