In vitro physiological responses of Fusarium oxysporum f. sp. niveum to exogenously applied syringic acid.
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.
Wu
Hong-Sheng
HS
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
Luo
Jia
J
Liu
Yan-Xia
YX
Chen
Ai-Qun
AQ
Tang
Zhu
Z
Cao
Yun
Y
Chen
Gao
G
Mao
Ze-Sheng
ZS
Huang
Qi-Wei
QW
Shen
Qi-Rong
QR
D018533:Biomass; D004305:Dose-Response Relationship, Drug; D005670:Fusarium / Q000187:drug effects* / Q000472:pathogenicity / Q000502:physiology*; D005707:Gallic Acid / Q000008:administration & dosage / Q000031:analogs & derivatives*; D054884:Host-Pathogen Interactions; D007202:Indicators and Reagents / Q000008:administration & dosage*; D009183:Mycotoxins / Q000096:biosynthesis; D013172:Spores, Fungal / Q000378:metabolism; D037521:Virulence Factors / Q000096:biosynthesis
D007202:Indicators and Reagents; D009183:Mycotoxins; D037521:Virulence Factors; D005707:Gallic Acid; C001945:syringic acid