Open AccessCalcium is Necessary for Motility in the Diatom Amphora coffeaeformis
Author(s) -
Barbara Cooksey,
Keith E. Cooksey
Publication year - 1980
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.65.1.129
Subject(s) - amphora , calcium , motility , diatom , botany , chemistry , biology , biochemistry , microbiology and biotechnology , geography , archaeology , organic chemistry
The marine diatom Amphora coffeaeformis required Ca(2+) and bicarbonate for motility. Movement was inhibited by the Ca(2+)-blocking agents ruthenium red and alpha-isopropyl-alpha-[(N-methyl-N-homoveratryl)-alpha- aminopropyl]-3,4,5-trimethoxy phenyl acetonitrile and the metabolic energy uncoupler, carbonyl cyanide 3-chlorophenylhydrazone. 3-(3',4-Dichlorophenyl)-1,1-Dimethyl urea was without effect on cells at a concentration that prevented O(2) production in the light. Although Sr(2+) could replace Ca(2+) in the attachment of cells to glass, it did not substitute for Ca(2+) in motility.