Uptake of Strontium by Roots of Zea Mays | Zendy

Raymond Handley | Zendy; Roy Overstreet | Zendy

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Uptake of Strontium by Roots of Zea Mays

Author(s) -

Raymond Handley,

Roy Overstreet

Publication year - 1963

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.38.2.180

Subject(s) - meristem , zea mays , absorption (acoustics) , metabolism , strontium , biology , biophysics , respiration , botany , chemistry , biochemistry , shoot , agronomy , organic chemistry , physics , acoustics

The absorption characteristics of vacuolated and nonvacuolated sections of the primary root of Zea may L. with respect to the uptake of Sr were determined. Like Na, Ca, and Cl, uptake of Sr is a non-metabolic process in the meristematic portion of the root tip, but dependent upon metabolism in the vacuolated tissue. The data presented suggest the existence of a barrier probably lying close to the cell surface which normally limits the non-metabolic uptake of Sr. This barrier is apparently metabolically maintained and is readily destroyed by anaerobiosis, permitting larger arnounts of Sr to enter the tissue. SrCl/sub 2/ was found to stimulate the respiration of both vacuolated and non- vacuolated tissue. (auth)

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