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In Vitro Physiological Responses of Fusarium oxysporum f. sp. niveum to Exogenously Applied Syringic Acid
Author(s) -
WU HONGSHENG,
LUO JIA,
LIU YANXIA,
CHEN AIQUN,
TANG ZHU,
CAO YUN,
CHEN GAO,
MAO ZESHENG,
HUANG QIWEI,
SHEN QIRONG
Publication year - 2009
Publication title -
journal of eukaryotic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 1066-5234
DOI - 10.1111/j.1550-7408.2009.00417.x
Subject(s) - syringic acid , biology , fusarium oxysporum , allelopathy , germination , fungus , botany , microbiology and biotechnology , fusaric acid , host (biology) , fusarium , biochemistry , ecology , gallic acid , antioxidant
. 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.