The Maturation and Senescence in Relation to Ca^2+,CaMContent and Ca^2+-ATPase Activity and Active OxygenMetabolism in Strawberry Fruits  

作　　者：GUAN Jun-feng, GAO Min, FAN Xiu-cai, GU Cai-qin, LI Guang-min and ZHANG Ji-shu(Institute of Agro-Physics , Plant Physiology and Biochemistry , Hebei Academy of Agricultural and Forestry Sciences ,Shijiazhuang 050051 , P. R . China  College of Life Sciences , Northwestern Science and Technology Universityof Agriculture and Forestry, Yangling 712100 , P.R.China) 

出　　处：《Agricultural Sciences in China》2002年第10期1151-1155,共5页中国农业科学（英文版）

基　　金：the National Natural Science Foundation of China ( No.30270933).

摘　　要：The changes in content of Ca2 + and CaM, Ca2 + -ATPase activity and active oxygen metabolism during strawberry (Fragaria ananassa Duch. cv. Chunxing) fruits maturation and senescence were investigated in this study. The results showed that the soluble Ca2+ content and SOD activity in fruits tended to decline and O2 production rate to increase, the Ca2 + -ATPase activity peaked at first and then declined during fruits maturation and senescence. There were the highest CaM content at white stage in preharvest fruits and at marked senescence stage in postharvest ones. The above biochemical changes in fruits stored at low temperature (4℃)were slower than those stored at normal temperature(25℃). Thus, it indicated that the stimulation of calcium messenger system and accumulation of active oxygen free radical were closely related to fruits maturation and senescence.The changes in content of Ca2 + and CaM, Ca2 + -ATPase activity and active oxygen metabolism during strawberry (Fragaria ananassa Duch. cv. Chunxing) fruits maturation and senescence were investigated in this study. The results showed that the soluble Ca2+ content and SOD activity in fruits tended to decline and O2 production rate to increase, the Ca2 + -ATPase activity peaked at first and then declined during fruits maturation and senescence. There were the highest CaM content at white stage in preharvest fruits and at marked senescence stage in postharvest ones. The above biochemical changes in fruits stored at low temperature (4℃)were slower than those stored at normal temperature(25℃). Thus, it indicated that the stimulation of calcium messenger system and accumulation of active oxygen free radical were closely related to fruits maturation and senescence.

关 键 词：STRAWBERRY FRUIT MATURATION SENESCENCE Calcium messenger system Active oxygen free radical 

分 类 号：S668.4[农业科学—果树学]