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Forisome dispersion in Vicia faba is triggered by Ca(2+) hotspots created by concerted action of diverse Ca(2+) channels in sieve elements.

Abstract:

Remote-controlled Ca(2+) influx, elicited by electropotential waves, triggers local signaling cascades in sieve elements and companion cells along the phloem of Vicia faba plants. The stimulus strength seems to be communicated by the rate and duration of Ca(2+) influx into sieve elements (SEs). The cooperative recruitment of Ca(2+) channels results in a graded response of forisome culminating in full sieve-tube occlusion. Several lines of evidence are integrated into a model that links the mo...

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Publisher copy:
10.4161/psb.4.10.9671

Authors


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Institution:
University of Oxford
Department:
Oxford, MPLS, Plant Sciences
van Bel, AJ More by this author
Journal:
Plant signaling and behavior
Volume:
4
Issue:
10
Pages:
968-972
Publication date:
2009-10-05
DOI:
EISSN:
1559-2324
ISSN:
1559-2316
URN:
uuid:c03d20e2-4bc3-4d51-9cad-634b06de1fc3
Source identifiers:
34929
Local pid:
pubs:34929

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