Characterization and Identification of <i>Neocosmospora solani</i> and <i>Fusarium oxysporum</i> Causing Root Necrosis and Wilting of Orange Trees in Chile.

ABSTRACT: Orange trees (Citrus × sinensis (L.) Osbeck) are the third-most cultivated citrus fruit species in Chile. In recent years, several trees in three orange orchards of 'Lane late' and 'Fukumoto' cultivars grafted on 'Robidoux' trifoliate orange (Poncirus trifoliata (L.) Raf.) have shown chlorosis, canopy reduction, wilting, root necrosis, defoliation, and plant death symptoms. This study aims to characterize the morphological symptoms observed in diseased orange trees in central Chile and identify the fungal pathogens that are involved. Isolation and morphological characterization of the pathogens were conducted by using different culture media. A total of 53 isolates were obtained, morphologically characterized and 12 isolates were selected for molecular identification.

SUBMITTER: Garzon-Nivia MA 

PROVIDER: S-EPMC11821085 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature