Journal: PLoS ONE
Article Title: BABA and Phytophthora nicotianae Induce Resistance to Phytophthora capsici in Chile Pepper ( Capsicum annuum )
doi: 10.1371/journal.pone.0128327
Figure Lengend Snippet: Plants were soil drenched with 100,000 P . nicotianae zoospores, 2.5 mM BABA, or water and foliar inoculated with 2,000 P . capsici zoospores per leaf, and plants were incubated in a humidity chamber at 28°C. for 48 h Plants were removed from humidity chamber and watered normally and grown under fluorescent light for an additional two weeks. (A) P . capsici caused systemic foliar blight and death in all untreated plants, whereas 50%- 83% of P . nicotianae or BABA treated plants did not develop disease symptoms outside of the inoculated leaves. (B) Histochemical x-gluc staining of GUS expressing P . capsici was utilized to visualize pathogen structures on inoculated C . annuum leaves. At 72 h post inoculation, abundant P . capsici hyphae and sporangia were visible on untreated plants, while BABA and P . nicotianae treated plants displayed confined areas of x-gluc staining with no identifiable P . capsici structures. Scale bar 30 μm for all images.
Article Snippet: Phytophthora capsici strain PWB24 (ATCC MYA-2289) and P . nicotianae isolate NM.T1 (Genbank: HQ711620) were used in this study.
Techniques: Incubation, Staining, Expressing