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Localization of ATPase Activity on the Plasmalemma of Scutellar Epithelial Cells of Germinating Barley (Hordeum vulgare L.)

Localization of ATPase Activity on the Plasmalemma of Scutellar Epithelial Cells of Germinating... Abstract Chaffey, N. J. and Harris, N. 1985. Localization of ATPase activity on the plasmalemma of scutellar epithelial cells of germinating barley (Hordeum vulgare L.).—J. exp. Bot 36: 1612–1619. ATPase activity has been localized at an ultrastructural level in the absorptive region of the scutella of germinating barley (Hordeum vulgare L.). The enzyme is localized on the plasmalemma of the epithelial cells. Using the Gomori reaction the deposition of reaction product on the plasmalemma, which is dependent upon the presence of supplied ATP, was precluded or reduced by the inhibitors orthovanadate, mercuric chloride and DCCD, whilst β-glycerophosphate would not act as an alternative substrate. The mitochondria demonstrated phosphatase activity with both ATP and β-glycerophosphate as substrate. The results are discussed in relation to the active uptake of metabolites by the scutellum during germination and the structural modification of the plasmalemma of the epithelial cells to form plasmatubules. ATPase, Hordeum vulgare L., localization (ultrastructural) This content is only available as a PDF. © Oxford University Press http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Experimental Botany Oxford University Press

Localization of ATPase Activity on the Plasmalemma of Scutellar Epithelial Cells of Germinating Barley (Hordeum vulgare L.)

CHAFFEY, N., J.; HARRIS,, N.
Journal of Experimental Botany , Volume 36 (10) – Oct 1, 1985
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Publisher
Oxford University Press
Copyright
© Oxford University Press
ISSN
0022-0957
eISSN
1460-2431
DOI
10.1093/jxb/36.10.1612
Publisher site
See Article on Publisher Site

Abstract

Abstract Chaffey, N. J. and Harris, N. 1985. Localization of ATPase activity on the plasmalemma of scutellar epithelial cells of germinating barley (Hordeum vulgare L.).—J. exp. Bot 36: 1612–1619. ATPase activity has been localized at an ultrastructural level in the absorptive region of the scutella of germinating barley (Hordeum vulgare L.). The enzyme is localized on the plasmalemma of the epithelial cells. Using the Gomori reaction the deposition of reaction product on the plasmalemma, which is dependent upon the presence of supplied ATP, was precluded or reduced by the inhibitors orthovanadate, mercuric chloride and DCCD, whilst β-glycerophosphate would not act as an alternative substrate. The mitochondria demonstrated phosphatase activity with both ATP and β-glycerophosphate as substrate. The results are discussed in relation to the active uptake of metabolites by the scutellum during germination and the structural modification of the plasmalemma of the epithelial cells to form plasmatubules. ATPase, Hordeum vulgare L., localization (ultrastructural) This content is only available as a PDF. © Oxford University Press

Journal

Journal of Experimental Botany – Oxford University Press

Published: Oct 1, 1985

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