Affiliation:
1. Department of Plant and Soil Sciences University of Pretoria Hatfield South Africa
Abstract
Abstract
Aim of the Study
The aim was to characterize the baseline microbial population of the avocado carposphere and understand shifts in community structure from the harvest to ready-to-eat stages.
Methods and Results
The changes in surface or stem-end (SE) fungal microbiomes at the postharvest stage of avocado fruit were studied using next-generation sequencing of the internal transcribed spacer region. Avocado fructoplane and SE pulp fungal richness differed significantly between postharvest stages with a decline following prochloraz dip treatments. Known postharvest decay-causing genera, Colletotrichum, Fusarium, Alternaria, Epicoccum, Penicillium and Neofusicoccum were detected, with Papiliotrema, Meyerozyma and Aureobasidium confirmed as the most dominant potentially beneficial genera. Postharvest interventions such as prochloraz had a negative non-target effect on the presence of Papiliotrema flavescens on the avocado fructoplane.
Conclusion
Our findings reveal a core community of beneficial and pathogenic taxa in the avocado fructoplane and further highlight the reduction of pathogenic fungi as a consequence of fungicide use.
Significance and Impact of the Study
The current study provides important baseline data for further exploration of fungal population shifts in avocado fruit driven by chemical (fungicide) as well as physical (cold storage) interventions.
Publisher
Oxford University Press (OUP)
Subject
Applied Microbiology and Biotechnology,General Medicine,Biotechnology
Cited by
8 articles.
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