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Application of stressed and microencapsulated Meyerozyma caribbica for the control of Colletotrichum gloeosporioides in avocado (Persea americana Mill. cv. Hass)

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Abstract

The antagonistic capacity of Meyerozyma caribbica subjected to hydric and thermal stress and microencapsulated by spray drying against Colletotrichum gloeosporioides was evaluated. M. caribbica grown in medium modified with 1.5 M NaCl and 38 °C increased its viability to 126.36 and 108.78% at a water activity (aw) = 0.98 and 0.96, respectively, compared to the control (100%, aw = 1.0) after 48 h of incubation. Under the same conditions, yeast enhanced its antagonistic activity from 49.27 up to 75.11%. Then, the biocontrol efficacy of different treatments with fresh, stressed, or microencapsulated yeast was evaluated on the incidence and severity of anthracnose disease in avocado fruits. All treatments showed 100% incidence at 10 d of storage at 27 °C; however, all treatments reduced the severity of the disease compared with the control treatment. The best results were obtained with the microencapsulated stressed yeast, which reduced the lesion diameter by 45.43% compared with the control. This study demonstrated the capacity of M. caribbica subject to hydric and thermal stress to increase its viability, improve biocontrol efficacy, and show potential for future preharvest stage applications in avocado fruits.

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Acknowledgements

The authors thank Consejo Nacional de Ciencia y Tecnología (CONACYT), Mexico, for the scholarship number 701241, awarded to Katia. N. González Gutiérrez, Tecnologico Nacional de Mexico, for the support through the project number 11168.21-P, and the company Leb Trading Products (Guacamodely) S. de R.L. de C.V. for providing the avocado fruit for this work

Funding

This research is part of the activities of the CYTED Network 319RT0576 “Desarrollo sostenible en agroalimentación y aprovechamiento de residuos industriales.” This work was financed by Tecnologico Nacional de Mexico for the support through the project number 11168.21-P.

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All authors had contributed to the study conception and design. Katia N. González Gutiérrez performed the experiments, data/evidence collection, application of statistical analysis, and article redaction. Juan Arturo Ragazzo Sánchez took part in the application of statistical, mathematical, and computational techniques to analyze or synthesize study data. Montserrat Calderón Santoyo carried out the formulation of overarching research goals and aims, oversight, and leadership responsibility for the research activity planning and execution, provision of study materials, reagents, and materials. All authors read and approved the final manuscript.

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Correspondence to Montserrat Calderón-Santoyo.

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González-Gutiérrez, K.N., Ragazzo-Sánchez, J.A. & Calderón-Santoyo, M. Application of stressed and microencapsulated Meyerozyma caribbica for the control of Colletotrichum gloeosporioides in avocado (Persea americana Mill. cv. Hass). J Plant Dis Prot 128, 1243–1251 (2021). https://doi.org/10.1007/s41348-021-00487-2

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  • DOI: https://doi.org/10.1007/s41348-021-00487-2

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