PMID: 1194359Nov 1, 1975Paper

Calcium accumulations within the growing tips of pollen tubes

The Journal of Cell Biology
L F JaffeL F Jaffe

Abstract

Pollen of L. longiflorum was grown in 45Ca-labeled medium and washed with nonradioactive medium. Whole, labeled pollen was then frozen and autoradiographed at -78 degrees C. The autoradiographs show striking accumulations of 45Ca in the growing tips of the pollen tubes. This result is obtained when the pollen is labeled for times as short as 1 min, or as long as 5 h. In most cases, the tip concentration is about two to four times greater than that in the bulk of the pollen tube, and extends for a length of about 20 mum. In autoradiographs of tubes longer than 1 mm, a small fraction of cells show a distinctly larger 45Ca accumulation, the tip containing more than 100 times that in the rest of the cell. The 1- to 5-h labeling experiments show that calcium is relatively concentrated within the cytoplasm of the growing tip. The 1- to 3-min labeling experiments suggest that calcium may enter the tip faster than it enters other regions. These patterns of calcium accumulation and flux may be related to the localized secretion of vesicles at the grow;ng tip.

References

Sep 1, 1975·The Journal of Cell Biology·M H WeisenseelL F Jaffe
Jan 1, 1974·Annals of the New York Academy of Sciences·L F JaffeR Nuccitelli
Dec 1, 1973·Developmental Biology·K R Robinson, L F Jaffe

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Citations

Jan 1, 1979·Planta·E M Dreyer, M H Weisenseel
Jan 1, 1988·The Journal of Membrane Biology·Y TakeuchiF M Harold
May 1, 1983·Developmental Biology·J G McNallyH Swift
Dec 1, 1989·Developmental Biology·C WangK R Robinson
Dec 1, 1991·Developmental Biology·K S RathoreK R Robinson
Oct 3, 1999·The Plant Journal : for Cell and Molecular Biology·S J RoyP K Hepler
Mar 1, 1979·Proceedings of the National Academy of Sciences of the United States of America·L F Jaffe, R I Woodruff
May 1, 1990·The Journal of Cell Biology·W M Kühtreiber, L F Jaffe
Aug 3, 2005·The Plant Cell·Peter K Hepler
Jan 1, 1997·Annual Review of Cell and Developmental Biology·J E Fowler, R S Quatrano
Nov 23, 2011·Trends in Plant Science·Peter K HeplerLawrence J Winship
Apr 10, 2010·Journal of Integrative Plant Biology·Peter K Hepler, Lawrence J Winship
Jan 1, 1980·Annals of the New York Academy of Sciences·K R Robinson, C McCaig
Jan 1, 1980·Annals of the New York Academy of Sciences·H W JarrettM J Cormier
Feb 11, 2015·Molecular Plant·Junyi ChenThomas Dresselhaus
Oct 18, 2012·Biochimica Et Biophysica Acta·Leonie Steinhorst, Jörg Kudla
Apr 28, 2018·Journal of Experimental Botany·K R KonradR Hedrich

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