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GalLDH activity, total ascorbate content, and percentage of reduced ascorbate in nodules exposed to stress and during senescence. GalLDH activity is expressed per milligram of protein and total ascorbate is expressed per gram of fresh weight. Values are means ± se of six to seven samples from at least three series of plants grown independently. Asterisks denote significant differences from control nodules based on the lsd test (P < 0.05).
