Osmotin overexpression in potato delays development ofdisease symptoms.

• DOI: 10.1073/pnas.91.5.1888
• Publication Date: 2006-05-31T13:05:56Z
• Authors: D Liu; K G Raghothama; P M Hasegawa; R A Bressan
• Keywords: Phytophthora infestans; Cauliflower mosaic virus; Phytophthora nicotianae

Transgenic potato and tobacco plants carrying the osmotin gene under control of cauliflower mosaic virus 35S promoter constitutively overexpressed to a level approximately 2% total cellular protein. Leaves transgenic exhibited delayed development disease symptoms after inoculation with spore suspensions Phytophthora infestans, which is cause late blight potato. In contrast, did not display any change in when challenged either or fungal mycelia parasitica var. nicotianae. Using vitro assays, purified was found be more effective against P. infestans. Some inhibition also observed even though no vivo effect could established.