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. 1976 Feb;57(2):315–319. doi: 10.1104/pp.57.2.315

Catalase, Peroxidase, and Polyphenoloxidase Activities during Rice Leaf Senescence 1

Manoranjan Kar a, Dinabandhu Mishra a,2
PMCID: PMC542015  PMID: 16659474

Abstract

The activities of catalase, peroxidase, and polyphenoloxidase were studied in attached and detached rice (Oryza sativa L. cv. Ratna) leaves. Catalase activity decreased while peroxidase and polyphenoloxidase activities increased during senescence of both attached and detached rice leaves. Kinetic (5 μm) and benzimidazole (1 mm), which are known to delay the senescence of detached rice leaves, retarded the decrease of catalase activity during detached leaf senescence. On the other hand, these chemicals accelerated the increase of peroxidase and polyphenoloxidase activities over the water control. Total phenolics accumulated in detached and darkened rice leaves, but in attached leaf senescence in light no accumulation of phenolics was observed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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