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In Vitro Physiological Responses of Fusarium oxysporum f. sp. niveum to Exogenously Applied Syringic Acid |
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| Authors: | HONG-SHENG WU JIA LUO YAN-XIA LIU AI-QUN CHEN ZHU TANG YUN CAO GAO CHEN ZE-SHENG MAO QI-WEI HUANG QI-RONG SHEN |
| Institution: | College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China, and; Jiangsu Key Laboratory for Solid Organic Waste Utilization, Nanjing 210095, China, and; Nanjing University of Information Science and Technology, Nanjing 210044, China |
| Abstract: | ABSTRACT. Plant–microbe interactions are often accompanied by allelochemicals, such as syringic acid, released from the host plant. To explore the role of phenolic acids released from crop host plants in response to pathogen invasion, we examined the allelopathic effect of an artificially applied syringic acid on Fusarium oxysporum f. sp. niveum . We demonstrated that the growth and the conidial germination rate of F. oxysporum f. sp. niveum were stimulated at lower concentrations of syringic acid, though inhibited by higher dosage compared with control. The yield of fungus mycotoxin was increased from 60.9% to 561.5%. We conclude that syringic acid can be considered as a allelochemical inducer, stimulating the relative virulence factors of invading pathogens. |
| Keywords: | Phenolic acid plant–microbe interaction |