Abstract
The expression of an endogenous catalase inhibitor has been studied during development of Zea mays. In the 3-day seedling, the inhibitor is expressed primarily in the scutellum and in the aleurone layer of the endosperm. These tissues also show the highest catalase activity at this stage. Inhibitor expression has also been studied temporally in the scutellum, roots, and shoot over the first 12 days of germination. Inhibitor expression shows an inverse relationship with catalase activity in the scutellum and in the shoot. The relationship is less rigid in the root, due probably to the low levels of inhibitor found in that tissue. The role of the inhibitor in catalase regulation is discussed.
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Selected References
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- Quail P. H., Scandalios J. G. Turnover of genetically defined catalase isozymes in maize. Proc Natl Acad Sci U S A. 1971 Jul;68(7):1402–1406. doi: 10.1073/pnas.68.7.1402. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Scandalios J. G., Liu E. H., Campeau M. A. The effects of intragenic and intergenic complementation on catalase structure and function in maize: a molecular approach to heterosis. Arch Biochem Biophys. 1972 Dec;153(2):695–705. doi: 10.1016/0003-9861(72)90388-8. [DOI] [PubMed] [Google Scholar]
- Sorenson J. C., Scandalios J. G. Purification of a catalase inhibitor from maize by affinity chromatography. Biochem Biophys Res Commun. 1975 Mar 3;63(1):239–246. doi: 10.1016/s0006-291x(75)80035-0. [DOI] [PubMed] [Google Scholar]