Fig 1. Phytophthora nicotianae pathogenicity assays on Capsicum annuum plants.
(A) Capsicum annuum plants were soil inoculated with 375,000 P. nicotianae (isolate NMT1: Genbank: HQ711620) zoospores per plant or 10,000 P. capsici (strain PWB24: ATCC MYA-2289) zoospores per plant and watered daily for two weeks. (B) Capsicum annuum plants were foliar inoculated with 100,000 P. nicotianae zoospores or mock inoculated with water and incubated in a humidity chamber for 5 days at 28°C. No symptom development was observed on the crown, roots, or foliage of P. nicotianae inoculated plants.