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First Report of Soft Rot Caused by Pectobacterium brasiliense on Summer Squash in Mississippi, USA

Brooks, L.; Bista, P.; Clark, E.; Mrema, F.; Bhatta, B. P.

2026-01-28 pathology
10.64898/2026.01.26.701841 bioRxiv
Show abstract

Summer squash (Cucurbita pepo) is a popular vegetable in Mississippi. These are harvested during the tender and immature stages. This vegetable is known to be a good source of vitamins A and C, as well as potassium, and iron. Small farms typically sell summer squash directly to consumers through local farmers markets. In this study, we isolated and identified a soft rot causing bacteria, Pectobacterium brasiliense strain 25ASUB12 (GenBank: PX884501), from symptomatic fruit of field-grown summer squash in Mississippi. We deployed both phenotypic and molecular techniques to identify this important pathogen which has a wide host range, including cucumbers, potatoes, and tomatoes.

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