Inhibitory activity of tea polyphenol and Hanseniaspora uvarum against Botrytis cinerea infections.
OBJECTIVE
To investigate the effect of tea polyphenol (TP) and Hanseniaspora uvarum alone or in combination against Botrytis cinerea in grapes and to evaluate the possible mechanisms involved.


RESULTS
TP alone was effective in controlling grey mould in grape at all concentrations. TP at 0.5 and 1.0% in combination with H. uvarum (1 x 10(6) CFU ml(-1)) showed a lower infection rate of grey mould. TP at 0.01% or above significantly inhibited the spore germination of B. cinerea. TP at 0.1% showed inhibition ability on mycelium growth of B. cinerea. The addition of TP did not affect the growth of H. uvarum in vitro and significantly increased the population of H. uvarum in vivo.


CONCLUSIONS
TP exhibited an inhibitory effect against B. cinerea and improved the biocontrol efficacy of H. uvarum. The inhibitory effects of spore germination and mycelial growth of B. cinerea and the increased populations of H. uvarum in vivo may be some of the important mechanisms of TP.


CONCLUSIONS
The results suggested that TP alone or in combination with biocontrol agents has great potential in the commercial management of postharvest diseases of fruits.
Liu
H M
HM
National Centre of Citrus Breeding, Key Laboratory of Horticultural Plant Biology of Ministry of Education, Huazhong Agriculture University, Wuhan, Hubei, China.
Guo
J H
JH
Cheng
Y J
YJ
Liu
P
P
Long
C A
CA
Deng
B X
BX
D000898:Antibiosis; D000935:Antifungal Agents / Q000302:isolation & purification / Q000494:pharmacology*; D020171:Botrytis / Q000187:drug effects* / Q000254:growth & development; D015169:Colony Count, Microbial; D005419:Flavonoids / Q000302:isolation & purification / Q000494:pharmacology*; D055321:Hanseniaspora / Q000502:physiology*; D025282:Mycelium / Q000187:drug effects / Q000254:growth & development; D010572:Pest Control, Biological / Q000379:methods; D010636:Phenols / Q000302:isolation & purification / Q000494:pharmacology*; D010935:Plant Diseases / Q000382:microbiology*; D059808:Polyphenols; D013172:Spores, Fungal / Q000187:drug effects / Q000254:growth & development; D013662:Tea / Q000737:chemistry*; D027843:Vitis / Q000382:microbiology
D000935:Antifungal Agents; D005419:Flavonoids; D010636:Phenols; D059808:Polyphenols; D013662:Tea