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Title Deformation of cell shape and pit pattern in roots of Zea mays under the influence of colchicine and heavy water
Creator/Author Stein, O.L. ; Rowley, J.R. ; Lockhart, J.A.
Publication Date1972 Dec 01
OSTI IdentifierOSTI ID: 4346632
Other Number(s)CODEN: PHYMA
Resource TypeJournal Article
Resource RelationPhytomorphology, v. 21, no. 4, pp. 296-308
Research OrgUniv. of Massachusetts, Amherst
SubjectN48730 --Life Sciences--Nuclide Kinetics & Toxicology--Plants; PLANT CELLS-- MORPHOLOGICAL CHANGES;BIOLOGICAL MODELS;MAIZE;ROOTS
Description/Abstract Individual files of xylary elements, representing the progeny of a single meristematic cell, were used in the analysis of treatments designed to cause cell distortion.Changes in cell dimensions and pit distortion patterns resulting from treatment with colchicine or heavy water were examined.Colchicine treatment produced shortened, spheroidal cells of increased volumes as compared to water-grown controls, whereas D/sub 2/O-treated cells were shortened cylinders.Some striking effects on pitting pattern were found.Cells showing the greatest colchicine effect had walls with relatively normal pits.Cells exposed only at the termination of their development showed some longitudinal fusion of pit patterns.When cells were exposed to heavy water, pits appeared as transverse or longitudinal grooves.On theoretical grounds a model is proposed that would account for the cell deformations observed.This model involves consideration of cellulose cross-link breakage, polymer synthesis, and orientation of new wall elements.Cell file scoring increases the precision of ontogenetic analyses by taking advantage of the fact that one deals with the serial progeny of a single cell before, during, and after treatment and thereby eliminates the complications of competition and cell displacement commonly encountered in complex tissues.(auth)
Country of PublicationUnited States
LanguageEnglish
System Entry Date2001 Jun 03

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