PMID: 11607510Jan 17, 1995Paper

Chemoattraction of male gametes by a pheromone produced by female gametes of Chlamydomonas

Proceedings of the National Academy of Sciences of the United States of America
R C StarrL Jaenicke

Abstract

In isogamous species of Chlamydomonas, such as Chlamydomonas reinhardtii and Chlamydomonas eugametos, the sexual process involves the use of flagella agglutinins by which the gametes of compatible strains adhere through chance encounter and ultimately pair and fuse to form zygotes. In a newly described heterogamous species, Chlamydomonas allensworthii, the sexual process is initiated by the chemoattraction of small sperm to a sexually competent female gamete, which continues to secrete the pheromone until it has fused with one of the sperm so attracted. From bacteria-free female strains of C. allensworthii, the chemoat-tractant has been isolated and identified as a pentosylated hydroquinone (Mr = 532) whose spectral, chemical, and physical properties are in accord with the structure of a 2,3-dimethyl-5-(triprenylcarboxymethyl)-1,4-benzohydroquinone-1-(beta-xyloside). A rapid bioassay of the pheromone uses DEAE-Toyopearl 650M beads to which the pheromone adsorbs. When such activated beads are placed in a suspension of sperm, they act as surrogate females and attract the small motile sperm. The purified pheromone shows activity at a concentration as low as 1 pM.

Citations

Apr 5, 2005·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Kenji Mori
Aug 1, 1997·Journal of Molecular Evolution·A W Coleman, J C Mai
Jul 12, 1996·Biochimica Et Biophysica Acta·G A Thompson
Jan 30, 1999·Psychoneuroendocrinology·D Crews
Oct 23, 1998·The Journal of Eukaryotic Microbiology·D L Kirk
Sep 16, 1998·Proceedings of the National Academy of Sciences of the United States of America·W E HullW Plaga
Jan 24, 2009·Protist·Ramiro LogaresKarin Rengefors
May 20, 2008·Theoretical Population Biology·Priya Iyer, Joan Roughgarden
Nov 19, 2015·Carbohydrate Research·Karin ThorsheimUlf Ellervik
Mar 7, 2014·The Plant Journal : for Cell and Molecular Biology·Johannes FrenkelGeorg Pohnert
Mar 23, 2017·The New Phytologist·Marianna VenuleoMario Giordano
Dec 28, 2019·The EMBO Journal·Christian TrötschelU Benjamin Kaupp
Mar 9, 2017·Journal of Plant Research·Nana KinoshitaTaizo Motomura
Aug 16, 2005·Biochemistry. Biokhimii︠a︡·E G Govorunova, O A Sineshchekov

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