Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Entire DC Network
The Roles Of Mechanical Stress And Ethylene In Clinostat-Induced Leaf Epinasty And Gravitropic Response Of Dicot Shoots, Raymond M. Wheeler
The Roles Of Mechanical Stress And Ethylene In Clinostat-Induced Leaf Epinasty And Gravitropic Response Of Dicot Shoots, Raymond M. Wheeler
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Aminoethoxyvinyl glycine (AVG) and silver thiosulfate, antagonists of ethylene biosynthesis and action in plants, both delayed onset of leaf epinasty in Xanthium strumarium L. (cocklebur) plants rotated on horizontal clinostats. Xanthium plants mechanically stressed by continuous horizontal or vertical shaking, or continuous twisting back and forth, did not develop any significant epinasty, while plants inverted every 20 minutes (upside down half the time) did develop epinasty. From this it appears that clinostat-induced epinasty is a result of gravity compensation rather than mechanical stress.
Treatment of Xanthium, Lycopersicon esculentum Mill. (tomato), and Ricinus communis L. (castor bean) …