J Integr Plant Biol. ›› 1998, Vol. 40 ›› Issue (5): -.

• Research Articles •    

Extracellular Calmodulin Stimulates the Transplasma Membrane Redox Reaction of Root Protoplasts in Zea mays

SUN Yu, CHEN Jia and SUN Da-Ye   

Abstract: Using ferricyanide as the membrane impermeable electron acceptor, the effects of extracellular calmodulin on transplasma membrane redox reaction of the root protoplasts in Zea mays L. were studied. The calmodulin antagonists (calmidazolium, W7-agarose) and anti-calmodulin serum had inhibitory effect on the extracellular reduction of ferricyanide with their concentration that yielded 50% inhibition were 1.5 μmoL/L, 10 μmol/L and 10 mg/L respectively. Inhibition of calmidazolimn could be restored by calmodulin completely. And the reduction of ferricyanide could be specifically stimulated by the exogerous purified calmodulin. These results suggested that transplasma membrane redox system of root protoplasts in Zea mays L. could be modulated by calmodulin outside the plasma membrane.

Key words: Extracellular calmodulin, Plasma membrane redox system, Ferricyanide reduction, Root protoplasts in Zea mays

Editorial Office, Journal of Integrative Plant Biology, Institute of Botany, CAS
No. 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: +86 10 6283 6133 Fax: +86 10 8259 2636 E-mail: jipb@ibcas.ac.cn
Copyright © 2021 by the Institute of Botany, the Chinese Academy of Sciences
Online ISSN: 1744-7909 Print ISSN: 1672-9072 CN: 11-5067/Q
备案号:京ICP备16067583号-22