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Sieve element Ca2+ channels as relay stations between remote stimuli and sieve tube occlusion in Vicia faba.

Abstract:

Damage induces remote occlusion of sieve tubes in Vicia faba by forisome dispersion, triggered during the passage of an electropotential wave (EPW). This study addresses the role of Ca2+ channels and cytosolic Ca2+ elevation as a link between EPWs and forisome dispersion. Ca2+ channel antagonists affect the initial phase of the EPW as well as the prolonged plateau phase. Resting levels of sieve tube Ca2+ of approximately 50 nM were independently estimated using Ca2+-selective electrodes and a...

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Publication status:
Published
Peer review status:
Peer Reviewed

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Publisher copy:
10.1105/tpc.108.063107

Authors


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Institution:
University of Oxford
Department:
Oxford, MPLS, Plant Sciences
Role:
Author
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Publisher:
American Society of Plant Biologists Publisher's website
Journal:
The Plant Cell Journal website
Volume:
21
Issue:
7
Pages:
2118-2132
Publication date:
2009-07-14
DOI:
EISSN:
1532-298X
ISSN:
1040-4651
URN:
uuid:e7cc6d6d-d889-4dc5-b002-7b784b36a744
Source identifiers:
34795
Local pid:
pubs:34795

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