Regulation of Exogenous Ethylene on Ca2+- ATPase Activity and Lipid Peroxidation of Microsomal Membrane in Strawberry Fruit

ACTA HORTICULTURAE SINICA ›› 2004, Vol. 31 ›› Issue (2): 227-229.

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Regulation of Exogenous Ethylene on Ca²⁺- ATPase Activity and Lipid Peroxidation of Microsomal Membrane in Strawberry Fruit

Fan Xiucai;Guan Junfeng;Liu Chonghuai;Zhang Jishu;Li Guangmin

( Zhengzhou Fruit Research Insthute，Chinese Academy of Agricultural Sciences，Zhengzhou 450009，China； Insthute of Genetics and Physiology，Hebei Academy of Agricultural and Forestry Sciences，Shijiazhuang 050051，China； College of Life Science，Northwest Sci-Tech University of Agriculture and Forestry，Yangling 712100，China)

Received:2003-05-22 Revised:2003-08-20 Online:2004-04-25 Published:2004-04-25

Abstract

Abstract:

The strawberry fruits(Fragaria ananassa Duch．‘Chunxing’) harvested at white stage were used to investigate the efects of exogenous ethylene (50 µL·L^-1 ) on Ca²⁺-ATPase activities，O production rate and MDA content of microsomal membrane with or without pretreatment of 100 µmol·L^-1chloropromaize(CPZ)，trifluoperizine(TFP)and verapamil(VER)，respectively，The results showed that the exogenous ethylene had no obvious influence on O production rate，and had no much effect on MDA content，but stimulated Ca²⁺-ATPase activitv of microsomal membrane at 12 h after ethylene treatment．Whereas a decreasing of Ca²⁺-ATPase activities， and relatively higher MDA content were found at 24 h after ethylene removal．The pretreatment of CPZ,TFP and VER reduced the Ca²⁺-ATPase activities and MDA content of microsomal memb rane under ethylene treatment， but had no significant efect on O production rate．These suggested that cellular Ca²⁺-CaM may be involved in regulation of Ca²⁺-ATPase activity and lipid peroxidation of microsomal membrane induced by ethylene．

Key words: Strawberry, Ethylene, Calcium messenger system, Fruit, Membrane, Ca²⁺-ATPase, Lipid peroxidation

CLC Number:

S668．4

Fan Xiucai;Guan Junfeng;Liu Chonghuai;Zhang Jishu;Li Guangmin. Regulation of Exogenous Ethylene on Ca²⁺- ATPase Activity and Lipid Peroxidation of Microsomal Membrane in Strawberry Fruit[J]. ACTA HORTICULTURAE SINICA, 2004, 31(2): 227-229.

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Regulation of Exogenous Ethylene on Ca²⁺- ATPase Activity and Lipid Peroxidation of Microsomal Membrane in Strawberry Fruit

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