Effect of Jasmonates Differed at Fruit Ripening Stages on 1-Aminocyclopropane-1-Carboxylate (ACC) Synthase and ACC Oxidase Gene Expression in Pears
Effect of Jasmonates Differed at Fruit Ripening Stages on 1-Aminocyclopropane-1-Carboxylate (ACC) Synthase and ACC Oxidase Gene Expression in Pears
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DOI：
10.21273/jashs.132.1.120
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发表时间：
2007
影响因子：
1.9
通讯作者：
S. Kondo;H. Yamada;S. Setha
中科院分区：
文献类型：
--
作者：
S. Kondo;H. Yamada;S. Setha
ADDITIONAL INDEX WORDS. ethylene, jasmonic acid, Pyrus communis ABSTRACT. The effects of n-propyl dihydrojasmonate (PDJ), which is a jasmonic acid derivative, on 1-amino- cyclopropane-1-carboxylate (ACC) synthase and ACC oxidase activities, their gene expressions, and ethylene productions in 'La France' pears (Pyrus communis L.) were investigated. The fruit was harvested 156 days after full bloom,storedat4 8Cfor15days,ripenedat20 8C,andthendippedinto0.39mMPDJsolutionatthepreclimactericstage (0dayofripeningat20 8C)ortheclimactericstage(9daysofripeningat20 8C).IntheskinofthePDJ-treatedfruitatthe preclimactericstage,theexpressionsofACCsynthase(ACS)1andACCoxidase(ACO)1werehigherthantheexpressions of those in the untreated control. Ethylene production also increased in the PDJ-treated fruit. In contrast, the accumulation of the ACS1 messenger RNA (mRNA) levels in the skin and an increase of ethylene production were observed in the untreated control fruit at the climacteric stage, although the levels of mRNAs hybridized with ACO1 were not differentbetween the PDJ-treatedfruit and untreated control.Theendogenousjasmonicacid levels inthe skin increasedinthePDJ-treatedfruitregardlessoftheapplicationtimesofPDJ.TheseresultsindicatethatACS1maybean ACC synthase gene that is induced by jasmonates in pears, and that system 2 ethylene may be regulated by jasmonates.
