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Representative multicolor fluorescence images of BF (440 nm) and GF (520 nm) for wild-type (WT) and reduced hyperosmolality-induced [Ca2+]i increase 1 (osca1) plants in control and drought stress treatments at day 3 and 8 after drought stress initiation. The color code depicted at the right of the images ranges from black (minimum value) to red (maximum value).
