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Linkage between gravity perception and response in the grass leaf-sheath pulvinusCellulose synthesis inhibitors 2,6-dichlorobenzonitrile and coumarin inhibit the normal gravitropic response of the leaf-sheath pulvini in several grasses. These inhibitors induce thickenings that are mostly distributed in the radial walls. Their distribution patterns follow a previously published equation that describes the geometry of asymmetric growth in the leaf-sheath pulvinus. It is proposed that radial transport of growth promotors may account for the observed asymmetric growth rather than the classical concept of lateral downward transport in an horizontally placed shoot. Electron microscopic observation of an interaction between the tonoplast membrane and statoliths suggests that such an interaction might be a basis for gravity perception in grass leaf-sheath pulvini.
Document ID
19830046594
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Dayanandan, P.
(Michigan Univ. Ann Arbor, MI, United States)
Franklin, C. I.
(Michigan Univ. Ann Arbor, MI, United States)
Kaufman, P. B.
(Michigan, University Ann Arbor, MI, United States)
Date Acquired
August 11, 2013
Publication Date
December 1, 1982
Subject Category
Life Sciences (General)
Accession Number
83A27812
Funding Number(s)
CONTRACT_GRANT: NAGW-34
Distribution Limits
Public
Copyright
Other

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