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Pro contents of wild type (Ben), lwr1, and lwr2 in response to a range of agar ψw. Pro content was assayed 96 h after transfer of 3-d-old seedlings to the indicated ψw. Data are means ± se (n = 5–8). Significant differences between mutant and wild type (P ≤ 0.05) are indicated by asterisks in the figure.
