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POSTERS: Mycology II

P-402 - Cross-infectivity of Fusarium spp. isolated from three crops from the Apiaceae on cilantro (Coriandrum sativum)

Tuesday, August 5, 2025
10:15 AM - 11:00 AM HST
Location: Exhibit Hall 3
Abstract Text: The Apiaceae includes economically important crops such as celery (Apium graveolens), cilantro (Coriandrum sativum), and parsley (Petroselinum crispum), commonly cultivated in rotation systems in southern Florida. Soil-borne diseases, particularly those caused by Fusarium spp. pose a significant challenge to horticulture. However, the host range and pathogenicity of Fusarium isolates from these crops in Florida have not been fully explored. This study evaluates the cross-pathogenicity of Fusarium spp. isolated from diseased cilantro, celery, and parsley on cilantro. Sixteen Fusarium isolates were molecularly identified using TEF and IGS. In a greenhouse experiment, the isolates were infested into the soil, at the concentration of 105 spores per gram of soil.  Plant parameters assessed included root weight, total plant height and weight, and crown discoloration (a typical symptom of Fusarium infection). Results showed that isolates reduce plant biomass, root weight and caused crown discoloration at a varying level, which can indicate a potential risk of yield loss. This study emphasizes the need to understand the broader host range of Fusarium spp. in crop rotation systems in the Everglades region. It also provides new information contributing to the effective management of soil-borne diseases in coriander cultivation.