Title : Relationships between fruit exocarp antioxidants in the tomato (Lycopersicon esculentum) high pigment-1 mutant during development.

Pub. Date : 2004 Apr

PMID : 15032813






7 Functional Relationships(s)
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Compound Name
Protein Name
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1 The hp-1 mutant was chosen for this study because the reportedly higher lycopene and ascorbic acid (AsA) contents of the fruit may alter its tolerance to photooxidative stress. Ascorbic Acid DNA damage-binding protein 1 Solanum lycopersicum
2 The hp-1 mutant was chosen for this study because the reportedly higher lycopene and ascorbic acid (AsA) contents of the fruit may alter its tolerance to photooxidative stress. Ascorbic Acid DNA damage-binding protein 1 Solanum lycopersicum
3 Throughout most of fruit development, reduced AsA concentrations in the exocarp of hp-1 were 1.5 to 2.0 times higher than in "Rutgers", but total glutathione concentrations were similar in both genotypes. Ascorbic Acid DNA damage-binding protein 1 Solanum lycopersicum
4 Only in ripe red fruit were reduced AsA and total glutathione concentrations lower in hp-1 than in "Rutgers". Ascorbic Acid DNA damage-binding protein 1 Solanum lycopersicum
5 The redox ratios (reduced : reduced + oxidized) of AsA in hp-1 and "Rutgers" exocarps were similar and usually > 0.9, however, the redox ratio of glutathione was lower in hp-1 than in "Rutgers" throughout development. Ascorbic Acid DNA damage-binding protein 1 Solanum lycopersicum
6 These results suggest that elevated AsA in the exocarp of hp-1 fruit early in fruit development may increase the tolerance of hp-1 fruit to photooxidative injury at that time, but the increasing activities of antioxidant enzymes appear to be developmentally associated with fruit ripening. Ascorbic Acid DNA damage-binding protein 1 Solanum lycopersicum
7 These results suggest that elevated AsA in the exocarp of hp-1 fruit early in fruit development may increase the tolerance of hp-1 fruit to photooxidative injury at that time, but the increasing activities of antioxidant enzymes appear to be developmentally associated with fruit ripening. Ascorbic Acid DNA damage-binding protein 1 Solanum lycopersicum