A Membrane-located, Calcium-/Calmodulin-activated Phospholipase Stimulated by Auxin
Lipase-catalyzed hydrolyses of membrane phospholipids yield substances implicated as second messengers including calcium ions,1 diglycerides2 and inositol phosphates3. These substances are capable, under appropriate circumstances, of amplifying and translating received hormonal stimuli into a response cascade potentially important to growth control. Our work has focused on an examination, both in vivo and in vitro, of phospholipid breakdown1 and calcium release4 associated with the action of auxin in stimulation of elongation growth in plant stem segments.
KeywordsPhosphatidic Acid Inositol Phosphates3 Elongation Growth Choline Phospholipid Response Cascade
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- 4.D. J. Morré, Calcium modulation of auxin-membrane interactions in plant cell elongation, in: “Molecular and Cellular Aspects of Calcium in Plant Development,” A. J. Trewavas, ed., Plenum, New York (1986).Google Scholar