Comparation of Symptom Type Difference of Pricklyash Rust and Population Genetic Structure of Coleosporium
Comparation of Symptom Type Difference of Pricklyash Rust and Population Genetic Structure of Coleosporium
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花椒锈病症状类型差异与鞘孢菌群体遗传结构比较
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通讯作者：
Li Chengyun
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作者：
Pu Shixian;Qi Guizhi;Yang Jing;Wang Na;Guo Jianwei;Zhang Peihua;Yang Xuwang;Liu Lin;Li Chengyun
花椒具有重要的经济价值、药用价值和生态价值。花椒锈病是花椒的主要病害之一，常引起花椒叶变色、坏死、脱落。病害严重时，可引起花椒整叶脱落，反复侵染，可导致花椒衰弱，甚至死亡，严重影响花椒的产量和品质。对不同症状的花椒锈病孢子形态进行了观察，并对其ITS序列进行了分析比较，结果表明，从野生花椒、曲靖花椒、红花椒和绿色花椒中采集的60份花椒锈病样品分属于担子菌亚门、冬孢纲、锈菌目、鞘孢科、鞘孢属、花椒鞘孢属。通过对铁皮石斛锈病与花椒锈病研究结果的比较分析，发现铁皮石斛锈病与花椒锈病聚为两个群体，ISSR分子标记的遗传相似系数为0.67。石斛锈病的遗传多样性比花椒锈病丰富。
Pricklyash has important economic value, medicinal value and ecological value. Pricklyash rust is one of the main diseases on Pricklyash, it often causes discoloration, necrosis and abscission of Pricklyash leaves. When the disease is serious, it can cause the whole leaves of Pricklyash to fall off and infect repeatedly, which can lead to the weakening of Pricklyash, even death, and seriously affects the yield and quality of Pricklyash. The spore morphology of Pricklyash rust with different symptoms was observed and ITS sequence was analyzed and compared, the results showed that 60 samples of Pricklyash rust collected from wild Pricklyash, Qujing Pricklyash, red Pricklyash and green Pricklyash belong to Basidio-mycotina, Teliomycetes, Uredinales, Coleosporaceae, Coleosporium, Coleosporium zanthoxyli. By comparing and analyzing the results of previous studies on Dendrobium rust with those Pricklyash rust, it was found that Dendrobium rust and Pricklyash rust were clustered in two populations, and the genetic similarity coefficient of ISSR was 0.67. The genetic diversity of Dendrobium rust was richer than Pricklyash rust.