Relationship between conidial concentration, germling growth, and phytoalexin production by Camelina sativa leaves inoculated with Alternaria brassicae – O.A. Jejelowo, K.L. Conn, and J.P. Tewari – Mycological Research 1991

Summary: Leaves of C. sativa were highly resistant to A. brassicae. No disease was seen until leaves began to senesce after 6 days and then only as localized brown flecks after inoculation with 100-10000 conidia. Camelina sativa produced a phytoalexin even when very few conidia were deposited on leaves. The phytoalexin concentration increased with increasing inoculum until leaves started to senesce.

Link: http://www.sciencedirect.com/science/article/pii/S0953756209800890