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Amyloplast Sedimentation Kinetics in Corn RootsKnowledge of the parameters of amyloplast sedimentation is crucial for an evaluation of proposed mechanisms of root graviperception. Early estimates of the rate of root amyloplast sedimentation were as low as 1.2 micron/min which may be too slow for many amyloplasts to reach the vicinity of the new lower wall within the presentation time. On this basis, Haberlandt's classical statolith hypothesis involving amyloplast stimulation of a sensitive surface near the new lower wall was questioned. The aim was to determine the kinetics of amyloplast sedimentation with reference to the presentation time in living and fixed corn rootcap cells as compared with coleoptiles of the same variety.
Document ID
19850017748
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Leopold, A. C.
(Cornell Univ. Ithaca, NY, United States)
Sack, F.
(Cornell Univ. Ithaca, NY, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1985
Publication Information
Publication: NASA. Washington NASA Space Biol. Program:
Subject Category
Life Sciences (General)
Accession Number
85N26059
Funding Number(s)
CONTRACT_GRANT: NAGW-3
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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