Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/37971
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dc.contributor.authorYu, C.W.en_US
dc.contributor.author林金和zh_TW
dc.contributor.authorMurphy, T.M.en_US
dc.contributor.authorLin, C.H.en_US
dc.date2003zh_TW
dc.date.accessioned2014-06-06T08:00:21Z-
dc.date.available2014-06-06T08:00:21Z-
dc.identifier.issn1445-4408zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/37971-
dc.description.abstractTransient oxidative shock induced by pretreatment of leaves with H2O2 effectively increased chilling tolerance in mung bean and Phalaenopsis. Seedlings of the chilling-tolerant (V3327) cultivar of mung bean (Vigna radiata L.) were employed to study the mechanism of H2O2-induced chilling tolerance. Pretreatment with 200 mM H2O2 increased survival rates of seedlings chilled at 4 degreesC for 36 h from 30% to 70%. The same treatment also lowered the electrolyte leakage from 86% to 21%. Time-course analysis immediately after the treatment demonstrated that exogenous application of H2O2 did not alter the endogenous H2O2 level of the plants. This observation suggests that the primary receptor for the exogenous H2O2 is localized on the leaf surface or in some other way isolated from the endogenous H2O2 pool. Oxidative shock inhibited the induction of the antioxidant enzymes, ascorbate peroxidase and catalase; however, it substantially increased glutathione content both under chilling and control conditions. Combined pretreatment of mung bean plants with abscisic acid and H2O2 showed no synergistic effect on glutathione content and decreased survival rate relative to treatment with either compound alone. These results suggest that the H2O2-induced chilling tolerance in these plants might be mediated by an elevation of glutathione content and is independent of the ABA mechanism of chilling protection.en_US
dc.language.isoen_USzh_TW
dc.relationFunctional Plant Biologyen_US
dc.relation.ispartofseriesFunctional Plant Biology, Volume 30, Issue 9, Page(s) 955-963.en_US
dc.relation.urihttp://dx.doi.org/10.1071/fp03091en_US
dc.subjectabscisic aciden_US
dc.subjectascorbate peroxidaseen_US
dc.subjectcatalaseen_US
dc.subjectglutathioneen_US
dc.subjecthydrogenen_US
dc.subjectperoxideen_US
dc.subjectmung beanen_US
dc.subject(Vigna radiata L.)en_US
dc.subjectcytosolic ascorbate peroxidaseen_US
dc.subjectinduced oxidative stressen_US
dc.subjectsoybeanen_US
dc.subjectembryonic axesen_US
dc.subjectmaize seedlingsen_US
dc.subjectantioxidant responsesen_US
dc.subjectsuperoxide-dismutaseen_US
dc.subjectarabidopsis-thalianaen_US
dc.subjectactive oxygenen_US
dc.subjectpine needlesen_US
dc.subjectaciden_US
dc.titleHydrogen peroxide-induced chilling tolerance in mung beans mediated through ABA-independent glutathione accumulationen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1071/fp03091zh_TW
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