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Nitrate-sensitive ATPase activity and proton pumping in guard cell protoplasts of Commelina

Abstract:

ATPase activity was measured in crude homogenates of guard cell protoplasts of Commelina communis L. using a linked enzyme assay. A low level of azide-sensitive ATPase activity was detected with a pH optimum of 6.8. This activity was stimulated by 0.01% (v/v) Triton X-100, and the pH optimum shifted to pH 7.4. Nitrate-sensitive ATPase activity was measured in the presence of azide and showed a pH optimum around pH 8.0. Proton pumping activity in a mixed population of vesicles from GC...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1093/jxb/41.2.193

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Plant Sciences
Role:
Author
Publisher:
Oxford University Press Publisher's website
Journal:
Journal of Experimental Botany Journal website
Volume:
41
Issue:
223
Pages:
193-198
Publication date:
1990-02-01
DOI:
EISSN:
1460-2431
ISSN:
0022-0957
Source identifiers:
43301
Keywords:
Pubs id:
pubs:43301
UUID:
uuid:06603944-500a-4e73-b91b-8e504b26155f
Local pid:
pubs:43301
Deposit date:
2012-12-19

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