Comparative Analysis of Leaf Trichomes, Epidermal Wax And Defense Enzymes Activities in Response to Puccinia horiana in Chrysanthemum and Ajania Species

Yinjie Wang; Jun Zeng; Xiaolong Xia; Yang Xu; Jing Sun; Jing Gu; Hainan Sun; Haini Lei; Fadi Chen; Jiafu Jiang; Weiming Fang; Sumei Chen

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Comparative Analysis of Leaf Trichomes, Epidermal Wax And Defense Enzymes Activities in Response to Puccinia horiana in Chrysanthemum and Ajania Species

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White rust caused by Puccinia horiana is a destructive disease of chrysanthemum plants.To better understand the resistance mechanisms of composite species to this disease,the leaf cuticular traits,antioxidant and defensive enzymes activities of immune(Chrysanthemum makinoi var.wakasaense)and highly susceptible(Ajania shiwogiku var.kinokuniense)species were compared.Trichome density of two species was markedly different,negatively associated with plant resistance to P.horiana.Total wax load in C.makinoi var.wakasaense was two times more than that in A.shiwogiku var.kinokuniense.The wax composition in immune one was abundant in esters and primary alcohols.Superoxide dismutase(SOD,EC 1.15.1.1),peroxidase(POD,EC 1.11.1.7),polyphenoloxidase(PPO,EC 1.14.18.1 or EC 1.10.3.2)and phenylalanine ammonia lyase(PAL,EC 4.3.1.5)activitieswere investigated.In C.makinoi var.wakasaense,the activity of SOD and POD increased rapidly after inoculation,whichmight be non-host induced reactive oxygen species(ROS)activated antioxidant enzymes,however SOD and POD remained a low and steady level in the highly susceptible one after inoculation.Quick increase in PPO activities after inoculation was observed in both species,however it remained higher in C.makinoi var.wakasaense at the late period of inoculation.PAL in C.makinoi var.wakasaense was induced after pathogen inoculation,but not in A.shiwogiku var.kinokuniense,suggesting that these two enzymes might contribute to the resistance to P.horiana.

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《园艺学报：英文版》 |2020年第003期|P.191-198|共8页
作者
Yinjie Wang; Jun Zeng; Xiaolong Xia; Yang Xu; Jing Sun; Jing Gu; Hainan Sun; Haini Lei; Fadi Chen; Jiafu Jiang; Weiming Fang; Sumei Chen;
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作者单位

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

College of Horticulture Nanjing Agricultural University Nanjing 210095 China;

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原文格式 PDF
正文语种 chi
中图分类有机化学;
关键词
Chrysanthemum; Puccinia horiana; Resistance; Leaf cuticular wax; Enzyme activity;

机译：菊花;Puccinia horiana;抗性;叶子切割蜡;酶活性;

Comparative Analysis of Leaf Trichomes, Epidermal Wax And Defense Enzymes Activities in Response to Puccinia horiana in Chrysanthemum and Ajania Species

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