Physiological and biochemical responses of in vitro Fusarium oxysporum f.sp. niveum to benzoic acid.
The allelopathic potential of an artificially applied allelochemical, benzoic acid, on in vitro Fusarium oxysporum f.sp. niveum (a soil-borne pathogen causing watermelon wilt) was evaluated. Benzoic acid strongly inhibited its growth, sporulation and conidia germination, whereas it stimulated virulence factors of this pathogen. The biomass was reduced by 83-96 % and the conidia germinating rate and conidia production rate were decreased by 100 % at a concentration of >200 mg/L. However, phytopathogenic enzyme activities and mycotoxin production were stimulated with an increase of 10.2-1250 % for enzyme activities and 610-2630 % for mycotoxin yield.
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210 095, China.
H-S
HS
Wu
Y
Y
Wang
C-Y
CY
Zhang
M
M
Gu
Y-X
YX
Liu
G
G
Chen
J-H
JH
Wang
Z
Z
Tang
Z-S
ZS
Mao
Q-R
QR
Shen
D019817:Benzoic Acid / Q000494:pharmacology*; D029773:Citrullus / Q000382:microbiology; D005670:Fusarium / Q000145:classification / Q000187:drug effects* / Q000302:isolation & purification / Q000502:physiology*; D008969:Molecular Sequence Data; D009183:Mycotoxins / Q000378:metabolism; D010802:Phylogeny; D010935:Plant Diseases / Q000382:microbiology*; D053147:Plant Exudates / Q000494:pharmacology*; D013172:Spores, Fungal / Q000187:drug effects / Q000502:physiology
D009183:Mycotoxins; D053147:Plant Exudates; D019817:Benzoic Acid