Defense response of cherry tomato at different maturity stages to combined treatment of hot air and Cryptococcus laurentii

•HA and Cryptococcus laurentii reduced decay incidence of cherry tomato at different maturity.•The combined treatment had a curative and preventive effect on control gray mold.•The combined treatment improved the efficacy of single treatment against pathogen.•The combined treatment had no negative e...

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Bibliographic Details
Published in:Postharvest biology and technology 2016-07, Vol.117, p.177-186
Main Authors: Wei, Yingying, Xu, Miao, Wu, Hailun, Tu, Sicong, Pan, Leiqing, Tu, Kang
Format: Article
Language:English
Subjects:
Botrytis cinerea
Cherry tomato
Cryptococcus laurentii
Fruit maturity
Hot air treatment
Lycopersicon esculentum
Postharvest diseases
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Summary:•HA and Cryptococcus laurentii reduced decay incidence of cherry tomato at different maturity.•The combined treatment had a curative and preventive effect on control gray mold.•The combined treatment improved the efficacy of single treatment against pathogen.•The combined treatment had no negative effect on quality of cherry tomato.•The combined treatment enhanced the activities of PAL, POD, CHI and GLU. Hot air (HA) treatment (38°C, 12h) and Cryptococcus laurentii were investigated separately or in combination for controlling postharvest decay caused by artificially inoculated with Botrytis cinerea, or natural infection in cherry tomato at different maturity stages. Results indicated that the combined treatment significantly reduced disease incidence of gray mold in cherry tomato at both mature green and pink stages regardless fruit were artificially inoculated with B. cinerea before or after treatment. The disease incidence of mature green fruit was lower than that of pink fruit with the same treatment. Similar results were observed on testing fruit with natural infection. HA could postpone fruit softening and increase the population density of C. laurentii in fruit wounds. Moreover, HA combined with C. laurentii induced higher activities of peroxidase, phenylalanine ammonia-lyase, chitinase, and β-1, 3-glucanases than the control. These results suggest that HA combined with C. laurentii had a curative and preventive effect to control postharvest disease in cherry tomato at both mature green and pink stages.
ISSN:0925-5214
1873-2356
DOI:10.1016/j.postharvbio.2016.03.001