江西农业学报2023，Vol.35Issue(12)：99-105,7.DOI:10.19386/j.cnki.jxnyxb.2023.12.014
外源5-氨基乙酰丙酸激活叶绿素合成诱导菊花抗白粉病研究
Activation of Chlorophyll Synthesis by Exogenous 5-Aminolevulinic Acid Induces Powdery Mildew Resistance in Chrysanthemum morifolium
摘要
Abstract
We used the cut flower Chrysanthemum morifolium Ramat.variety'Shenma'as the material,and investigated the effect of ALA on the control of powdery mildew by two ways of exogenous ALA pretreatment and then inoculation with powdery mildew and simultaneous treatment of ALA and inoculation with powdery mildew(ALA concentrations of 0,0.1,1,10,25 and 100 mg/L).The results showed that compared with the 0 mg/L treatment,spraying suitable concentrations of exogenous ALA could reduce the incidence rate and disease index of Chrysanthemum morifolium Ramat.under powdery mildew treatments,improve the effect of induced resistance to the disease,significantly reduce the rate of·O2-production,H2O2 content,lipoxygenase(LOX)activity and malondialdehyde(MDA)content,and significantly increase the contents of porphobilinogen(PBG),protoporphyrin IX(Proto IX),Mg protoporphyrin IX(Mg-Proto IX),protochlorophyllide(Pchl)and chlorophylls.The above indicators of A1 were more than those of A2.The applied concentration of ALA in A1 was most effective at 10 mg/L,while the concentration of the A2 at 25 mg/L had the best effect.In conclusion,exogenous ALA enhanced resistance to powdery mildew by modulating the chlorophyll synthesis pathway in Chrysanthemum morifolium Ramat.The results of this study can provide a reference for further elucidation of the mechanism of exogenous ALA-mediated resistance to powdery mildew.关键词
菊花/5-氨基乙酰丙酸/白粉病菌/叶绿素合成途径/诱导抗病效果Key words
Chrysanthemum morifolium Ramat./5-Aminolevulinic acid/Powdery mildew pathogen/Chlorophyll synthesis pathway/Effect of induced resistance to disease分类
农业科技引用本文复制引用
张玉英..外源5-氨基乙酰丙酸激活叶绿素合成诱导菊花抗白粉病研究[J].江西农业学报,2023,35(12):99-105,7.基金项目
中国经济与管理研究院"十四五"规划重点课题"新农村建设背景下的农业经济管理优化对策分析"(ZJG-002881). （ZJG-002881）
