Postharvest control of green mould on oranges by a strain of Pseudomonas glathei and enhancement of its biocontrol by heat treatment

• Published in: Postharvest biology and technology Vol. 5; no. 1; pp. 129 - 137
• Main Authors: Huang, Y., Deverall, B.J., Morris, S.C.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 1995
• Subjects: Bacterial antagonist; Biocontrol; BIOLOGICAL CONTROL; Citrus; CONTROL BIOLOGICO; CONTROL DE PLAGAS (POSTCOSECHA); HEAT TREATMENT; LUTTE APRES RECOLTE; LUTTE BIOLOGIQUE; MOHO; MOISISSURE; MOULDS; NARANJA DULCE; ORANGE; Penicillium digitatum; POSTHARVEST CONTROL; PSEUDOMONAS; SWEET ORANGES; TRAITEMENT THERMIQUE; TRATAMIENTO TERMICO; Penicillium digitatum; Bacterial antagonist; Heat treatment; Biocontrol
• ISSN: 0925-5214; 1873-2356
• DOI: 10.1016/0925-5214(94)00016-L

A bacterial isolate related to
Pseudomonas glathei did not produce antibiotics, but gave moderate biocontrol of green mould caused by
Penicillium digitatum on postharvest oranges at ambient conditions (25 °C). The biocontrol ability of this isolate was improved greatly when the inoculated fruits were incubated at 30 °C for 24 h before being moved to 25 °C. Heat treatment at 30 °C stimulated multiplication of the protective bacteria, but retarded the spore germination of the pathogen. This allowed the bacteria to become established at wound sites on fruit before germination of spores and infection by the pathogen occurred.