Compositional shifts in the fungal diversity of garlic scapes during postharvest transportation and cold storage. (November 2019)

• Record Type: Journal Article
• Authors: Chen, Junran; Yan, Ruixiang; Hu, Yunfeng; Zhang, Na; Hu, Hanyan
• Is Part Of: Lebensmittel-Wissenschaft + Technologie =. Volume 115(2019)
• Publication Date: 2019-11
• Subjects: Garlic scape -- Postharvest -- Fungal diversity -- High-throughput sequencing; Food industry and trade -- Periodicals; Food -- Composition -- Periodicals; Microbiology -- Periodicals; Nutrition -- Periodicals; 664.005
• DOI: 10.1016/j.lwt.2019.108453
• Languages: English
• ISSNs: 0023-6438

Abstract

Abstract: The aim of this study was to elucidate the dynamics, diversity and succession of fungal communities on garlic scapes during postharvest short-term transportation and long-term cold storage using the high-throughput sequencing of ITS1 regions. During short-term transportation, samples transported at 0 °C harbored 75 operational taxonomic units, which was more than in either of the higher temperature groups. The beta-diversity analysis revealed significant fungal compositional differences between the sample transported at 0 °C and those transported at the higher temperatures. These differences indicated that higher temperatures can result in significant changes in the fungal community composition by causing short-term competition among fungi. So, lower transportation temperature is beneficial to inhibit the growth-related metabolism of fungi and maintenance microflora on garlic scapes. During long-term cold storage, Botrytis gradually became the main fungus on garlic scapes. Thus, long-term cold-stored garlic scapes have a greater risk of undergoing postharvest deterioration caused by Botrytis . Additionally, purified Botrytis was inoculated into garlic scapes. The deterioration in the storage quality of garlic scapes was accelerated by the growth of Botrytis . Therefore, control measures should focus on gray mold diseases caused by Botrytis during long-term cold-stored garlic scapes after low temperature transportation. Highlights: High-throughput sequencing was applied to garlic scapes. Higher temperature affected fungal communities of garlic scapes significantly during short-term transportation. The fungal communities of garlic scapes changed during long-term storage. Botrytis was one of the main pathogen of garlic scapes during long-term cold storage.