Postharvest Application of Issatchenkia orientalis for the Control of Anthracnose of Mango

Abstract

The effectiveness of the yeast Issatchenkia orientalis in the control of anthracnose of postharvestmango was evaluated. In vitro test showed that hyphal growth and spore germination of Colletotrichumgloeosporioides were inhibited in the presence of the yeast. Spores inoculated on mango fruits werealso unable to germinate. Some spores were damaged due to the attachment of the yeast cells showing asunken surface. Diffusible and volatile substances were produced by the yeast and had adverse effect onhyphal growth of the fungal pathogen. Application of the yeast by immersing the mango fruits in ayeastsuspension (40 min) could reduce the postharvest development of anthracnose lesions. By integrating theuse of the yeast and a hot water treatment (52°C, 5 min) the effectiveness in controlling mango anthracnosewas increased.

Keywords : Anthracnose / Biocontrol / Mango / Postharvest / Yeast