Skip to main content

Advertisement

Figure 2 | BMC Plant Biology

Figure 2

From: Differential effectiveness of Serratia plymuthica IC1270-induced systemic resistance against hemibiotrophic and necrotrophic leaf pathogens in rice

Figure 2

Influence of root treatment with S. plymuthica IC1270 on M. oryzae -induced cellular responses in rice. (A) Intact leaf sheaths of the susceptible cv. CO39 and its resistant near-isogenic line C101LAC were challenged by injecting a conidial suspension of M. oryzae VT7. Left, Micrographs depicting representative interaction phenotypes (48 hpi): (I), Vigorous invasion of living tissues in the absence of visible host responses (CO39; Control treatment). (II), Fungal arrest in the first-invaded cell associated with browning of anticlinal cell walls (black arrowheads) and enhanced vesicular activity (asterisks) [CO39; Control treatment]. (III), Abrupt arrest of fungal invasion in hypersensitively reacting epidermal cell as indicated by dense cytoplasmic aggregation (C101LAC; Control treatment). Ap, appressorium or appressorial site. IH = invading hyphae. Scale bars = 20 μm. (B) Frequencies of abovementioned interaction phenotypes at 36 and 48 hours post inoculation. Each bar represents the mean and SD of six replications stemming from three plants. At least 50 single-cell interaction sites originating from representative sheath sections were examined per replication. Data from one experiment is presented. Repetition of experiments led to results very similar to those shown.

Back to article page