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| Effects of Hydrophilicity and Hydrophobicity of Slides on Conidia Germination and Germ Tube Development of Setosphearia turcica |
| HU Jing-Jing1, LIU Zi-Yi1, HUANG Xiao-Han1, GAO Wen-Qiang1, CAO Zhi-Yan2, ZHOU Li-Hong1,*, DONG Jin-Gao1,2,* |
1 College of Life Science, Hebei Agricultural University, Baoding 071000, China;
2 College of Plant Protection, Hebei Agricultural University, Baoding 071000, China |
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Abstract Northern corn leaf blight (NCLB) occurrs on maize (Zea mays) leaf and is a foliar disease caused by Setosphaeria turcica. The physical properties of maize leaf, such as hardness, hydrophilicity, and hydrophobicity, can be perceived by S. turcica firstly when it infects maize leaves. The conidia germination rate, appressorium formation rate, lipid droplets, and glycogen distribution were observed. The results showed that the rate of conidia germination and appressorium formation on the hydrophobic substrate were higher than those on the hydrophilic substrate. The diameter of lipid droplets in germ tubes cultured on the hydrophilic substrate was larger than those cultured on the hydrophobic substrate. The distribution of glycogen in germ tubes was not significantly different. The surface morphology of the susceptible ('Xianyu 335') and resistant ('Zhengdan 958') variety to S. turcica was significantly different. The epicuticular wax layer of 'Zhangdan 958' leaf was rougher than that of 'Xianyu 335' leaf. These results indicated that the hydrophilicity of glass slide affects the development of the S. turcica conidia and provided data support for the breeding of maize.
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Received: 29 March 2021
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Corresponding Authors:
*shmzhlh@hebau.edu.cn;dongjingao@126.com
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