Kluwer Academic Publishers, The Netherlands, pp. Nebenfuhr, A and T.L. Lomax. Behringer, F.J. and T.L. Lomax. Genetic analysis of the roles of phytochromes A and B1 in the reversed gravitropic response of the lazy-2 mutant of tomato. Madlung, A, F.J. Behringer and T.L. Lomax.
Ethylene plays multiple roles in modulating gravitropism in tomato.