J Integr Plant Biol. ›› 1999, Vol. 41 ›› Issue (11): -.

• Research Articles •    

Relationships Among Hormone Changes, Transmembrane Ca2+ Flux and Lipid Peroxidation During Leaf Senescence in Spring Maize

HE Ping and JIN Ji-Yun   

Abstract: 45Ca2+ absorption by plasma membrane vesicles isolated from maize (Zea mays L. ) leaves cultured in vitro was assessed to investigate the relationships among hormone changes, transmembrane Ca2+ flux and lipid peroxidation during leaf senescence. The results suggested that the possible process of leaf senescence in spring maize followed a sequence of endogenous hormonal change then transmembrane Caa + flux which further led to lipid peroxidation, with consequent degradation of chlorophyll and protein.

Key words: Spring maize, Leaf senescence, Ca2+ -ATPase, Plant hormone, SOD

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