Figure 2.

Apoplastic protein accumulation in winter rye leaves as a response to cold acclimation and to snow mold infection. As summarized in Table I, plants were grown under nonacclimating and cold-acclimating conditions, and half of the plants were inoculated and incubated with pink snow mold. Protein concentrations were measured in leaf apoplastic extracts obtained from at least three independent experiments. Data are presented as the means ± se. The protein contents were significantly higher in cold-acclimated CA5 (P < 0.001, n = 4) and snow-mold-infected NA18 INF (P < 0.01, n = 5) plants than in NA20 and NA18 plants, respectively. The protein contents in snow-mold-infected NA2 INF and CA2 INF plants were not statistically different from those in the noninfected NA2 and CA2 plants, respectively. White bars, Noninfected plants; hatched bars, snow-mold-infected plants. FW, Fresh weight.