A Polysaccharide of Ganoderma lucidum Enhances Antifungal Activity of Chemical Fungicides against Soil-Borne Diseases of Wheat and Maize by Induced Resistance

Xiu Yang, Shoumin Sun, Qiqi Chen, Zhongxiao Zhang, Jie Wang, Yali Liu and Hongyan Wang
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Xiu Yang: Department of Plant Protection, Shandong Agricultural University, Tai’an 271018, China
Shoumin Sun: Department of Plant Protection, Shandong Agricultural University, Tai’an 271018, China
Qiqi Chen: Department of Plant Protection, Shandong Agricultural University, Tai’an 271018, China
Zhongxiao Zhang: Department of Plant Protection, Shandong Agricultural University, Tai’an 271018, China
Jie Wang: Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
Yali Liu: Zhaoyuan Agro-Tech Extension Center, Yantai 265400, China
Hongyan Wang: Department of Plant Protection, Shandong Agricultural University, Tai’an 271018, China

Agriculture, 2022, vol. 12, issue 1, 1-19

Abstract: Ganoderma lucidum polysaccharide (GLP), which is the primary active ingredient in G. lucidum , has been widely used in functional food and clinical medicine. However, it is rarely reported in the prevention and control of plant diseases. In this study, we found that the GLP can increase the germination rates and seedling heights of maize and wheat. We also found that the combination of GLP and chemical fungicides as a seed coating chemical compound has a control effect of more than 75% on the primary soil-borne diseases of the wheat and maize growing areas in both greenhouse and field trials. Furthermore, the combination of GLP and chemical fungicides prolongs the lasting period and reduces the application dosage of the chemical fungicides by half. In addition, GLP seed dressing could increase the resistance-related gene expression of the TPS and WRKY53 in maize and WMS533 , NbPR1a, and RS33 in wheat. The combination of GLP and low-dose chemical fungicides proved to be an effective way to effectively prevent wheat sharp eyespot, root rot, and maize stalk rot in the wheat and maize continuous cropping areas in the North China Plain and to reduce pesticide use and increase crop yield.

Keywords: Ganoderma lucidum polysaccharide; seed treatment; induced resistance; soil-borne diseases (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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