The Effect of Cytokinin and Abscisic Acid on Iron Stress Response in Tomatoes

Authors

Mark L. Bernards, Brigham Young University
Dr. Von D. Jolley, Brigham Young University

Keywords

cytokinin, abscisic acid, iron stress response, tomatoes

College

Life Sciences

Department

Plant and Wildlife Sciences

Abstract

Iron is an essential nutrient for healthy plant growth. Dicotyledenous plants respond to insufficient iron with a variety of mechanisms. For example, they may release hydrogen ions or exude reductants (such as caffeic acid) from the roots to acidify the rhizosphere, reduce Fe 3+ to Fe 2+ through enzymes at the root surface, and accumulate organic acids (primarily citrate) in the roots (Brown, 1978). Iron-efficient tomato T3238FER responds to iron stress signals in the roots by activating these mechanisms. Iron-inefficient T3238fer does not activate these mechanisms when subjected to iron stress.

Recommended Citation

Bernards, Mark L. and Jolley, Dr. Von D. (2013) "The Effect of Cytokinin and Abscisic Acid on Iron Stress Response in Tomatoes," Journal of Undergraduate Research: Vol. 2013: Iss. 1, Article 1527.
Available at: https://scholarsarchive.byu.edu/jur/vol2013/iss1/1527