Sorbitol-induced changes in various growth and biochemical parameters in maize
2010
Jain, M.,Devi Ahilya Univ., Indore (India). School of Biochemistry | Tiwary, S.,Devi Ahilya Univ., Indore (India). School of Biochemistry | Gadre, R.,Devi Ahilya Univ., Indore (India). School of Biochemistry
Treatment of maize seedlings with different concentrations of sorbitol decreased the rate of germination substantially. Root and shoot length was also reduced by sorbitol treatment, however, the decrease in root length was lower than that in shoot length. Incubation of leaf segments from maize seedlings grown in continuous light with sorbitol decreased the fresh weight and increased the dry weight in a concentration-dependent manner. Sorbitol treatment also reduced the total chlorophylls, chlorophyll a as well as chlorophyll b; the decrease in chlorophyll 'b' being more prominent than that in chlorophyll 'a'. Supply of sorbitol decreased protein and RNA concentrations; however, proline content and in vivo nitrate reductase activity were increased. The results demonstrate an inhibitory effect of sorbitol-induced stress on overall growth in maize. Amongst the biochemical parameters analysed, chlorophyll, protein and RNA concentrations were decreased, while proline concentration and nitrate reductase activity were enhanced with sorbitol treatment.
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