Physiological Macro-lesions Enhanced Resistance to Blast (Magnaporthe grisea) in Rice Near-isogenic Lines

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摘要 Roll-leaf-1(rl-1)andspot-leaf-1(spl-1)weretwonear-isogeniclines,whichwereobtainedafter3to4backcrosseswithearlyseasonindicariceZhefu802asrecurrentparent.Hennamacro-lesions,referredasphysiologicalormorphologicalmarkers,begantoappearonleavesat4.5-to6.0-leafstage.Thericeseedlingswereinoculatedat3.5-,5.0-and7.0-leafstageswithhighpathogenicracesZhongA1andZhongB1ofMagnaporthegrisea,respectively.Theresistanceofrl-1,spl-1andZhefu802againstblastwassignificantlydifferent.TheseedlingsofZhefu802at3.5-to7.0-leafstageweresusceptibletoracesZhongA1andZhongB1ofM.grisea,whereasthoseofrl-1andspl-1at3.5-,5.0-and7.0-leafstagesweresusceptible,moderatelyresistantandresistant,respectively.Theseresultssuggestedthattheenhancedresistanceofri-1andspl-1relatedtotheappearanceoftheirmorphologicalmarkerlesions.Theexperimentprovidedabasisforstudyinglesionmimicandhypersensitiveresponseinassociationwithdiseaseresistance.
机构地区 不详
出处 《水稻科学:英文版》 2005年2期
出版日期 2005年02月12日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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