Elucidating the Causes of Opuntia littoralis Decay in Native Nurseries and Restoration Sites in Southern California

Type: other

Article abstract: In 2021, Opuntia littoralis (Coastal prickly-pear) plants at a restoration nursery in San Diego County were observed with circular yellow, red, and gray dry lesions surrounding their spines In 2022, further field surveys across 10 restoration sites in San Diego County showed affected plants with similar decay symptoms, at 5-25% prevalence Cacti decay observed in restoration nurseries and in native habitats created concern about pathogen introductions into ecosystems that support coastal cactus wrens (a species of concern in CA)

Number of pages: 1

Authors: Acker, Sophia; Arndt-Truong, Dimitri; Kashyap, Ruchika; Matthews, Derrick; Del Castillo Múnera, Johanna;

Day: 14

Month: April

Year: 2023

Prepared for: San Diego Association of Governments;

Prepared by: Department of Plant Pathology, University of California, Davis;

Keywords: Fungal and pathogens;

Threats: Parasitism/disease