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. 2003 Nov 24;100(25):14672–14677. doi: 10.1073/pnas.2034667100

Fig. 3.

Fig. 3.

Retardation of MG- and salt stress-promoted senescence in transgenic tobacco plants overexpressing either gly I (GI), gly II (GII), or both gly I and II in double transgenics (GI+II), indicating the tolerance at cellular levels toward toxic levels of MG and salt. Phenotypic differences (A) and chlorophyll content (B) (μg/g of fresh weight) from MG-treated leaf discs of WT and various transgenic plants (GI, GII, and GI+II) after incubation in 5 and 10 mM solutions of MG for 48 h are shown. Discs floated in water served as the experimental control. Phenotypic differences (C) and chlorophyll content (D)(μg/g of fresh weight) from sodium chloride-treated leaf discs of WT and various transgenic plants (GI, GII, and GI+II) after incubation in 400 and 800 mM solutions of NaCl for 3 and 5 days are shown. Discs floated in water served as the experimental control. The standard deviation in each case is represented by the vertical bar in each graph (n = 3). Note the difference in retention of chlorophyll in WT and transgenic plants.