|Table of Contents|

EffectofSaltStressonProtectiveEnzymeActivityofMutatedImpatiensbalsaminaL.

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年03
Page:
101-108
Research Field:
Publishing date:

Info

Title:
EffectofSaltStressonProtectiveEnzymeActivityofMutatedImpatiensbalsaminaL.
Author(s):
LIAOKe1WENGuoqin2DUYuyang3LIAOXuelan2
(1.NanchongVocationalandTechnicalCollege,Nanchong,Sichuan637131;2.KeyLaboratoryofSouthwestChinaWildlifeResourcesConservation(ChinaWestNormalUniversity),MinistryofEducation,Nanchong,Sichuan637002;3.NanchongHighSchool,Nanchong,Sichuan637000)
Keywords:
Keywords:saltstressmutatedImpatiensbalsaminaprotectiveenzymeionpoison
PACS:
-
DOI:
10.11937/bfyy.20182539
Abstract:
Abstract:Withspaceflight-mutatedImpatiensbalsaminaasexperimentalmaterial,saltstresswasstimulatedusingNaClunderlaboratoryconditions,andtheeffectsofNaClatdifferentconcentrationsontheactivityof2protectiveenzymesofImpatiensbalsaminawereinvestigated,soastoexplorethedifferenceinresistancephysiologybetweenmutatedImpatiensbalsaminaandcommonImpatiensbalsamina.Theresultsdemonstratedthatundersaltstress,thegerminationrateanduniformityofseedlingemergenceofcommonImpatiensbalsaminaseedswerenotaffectedbyNaClatlowconcentration(01%).Withtheincreaseofconcentration,thegerminationrateandgerminationpotentialdecreasedsharply.WithNaClataconcentrationof04%,althoughtheseedsgerminated,theycouldnotcontinuetogrowandtillerrootsafterradiclegrowth,andtheroottipsbecamebrownandnecrotic.MutatedImpatiensbalsaminawasverysensitivetowaterdeficit,underwhichtheprotectiveenzymesystemrespondedquicklyandprotectedplantsfromadversity.Withtheincreaseofsaltconcentration,CAT,SODandPODactivitiesofmutatedImpatiensbalsaminaincreasedsignificantly,whileMDAcontentshowednoobviouschange,suggestingthatmutatedImpatiensbalsaminawastoleranttolowsaltconcentration.Theincreaseofsaltconcentrationhadaninhibitoryeffectonplantphysiology.Withthestresstimegoingon,thetoxicitycausedbysaltstressgraduallyappeared.Undersaltstress,roottilleringandrootlengthofmutatedImpatiensbalsaminadecreasedsignificantly,andSODandCATactivitiesincreasedsignificantly.Byreducinggrowthandenhancingenzymeactivity,organismswereprotectedfromadversity.Inthelongterm,thisprotectiveenzymesystemandfreeradicalscavengingmechanismweresuperiortotheresponseofcommonImpatiensbalsaminatoadversity.

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Last Update: 2019-03-15