Auxin induced H+ secretion in Helianthus and its implications

• Published in: Plant physiology (Bethesda) Vol. 60; no. 4; pp. 509 - 512
• Main Authors: Mentze, J, Raymond, B, Cohen, J.D, Rayle, D.L
• Format: Journal Article
• Language: English
• Published: United States American Society of Plant Physiologists 01.10.1977
• Subjects: Animal cuticle; Auxins; Coleoptiles; Electrodes; Epidermis; Helianthus annuus; Hydrogen; hydrogen ions; Hypocotyls; Plants; Secretion; Sunflowers

We have examined the ability of Helianthus hypocotyl segments as well as segments from a variety of other species to elongate in response to H+ and to secrete H+ in response to auxin and fusicoccin. In all cases a positive response was obtained when the cuticular barrier was abraded with carborundum...