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Chemotaxis of Bracken Spermatozoids : The Role of Bimalate Ions

Brokaw, C. J. (1958) Chemotaxis of Bracken Spermatozoids : The Role of Bimalate Ions. Journal of Experimental Biology, 35 (1). pp. 192-196. ISSN 0022-0949. http://resolver.caltech.edu/CaltechAUTHORS:BROjeb58a

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Abstract

1. Bracken spermatozoids are chemotactically attracted by malic acid salts and in a pH gradient aggregate between pH 3.5 and 5.6. 2. This response to pH occurs only when the sperm suspension contains malate. 3. At higher pH's, the response to an H+ gradient is as strong as the response to a malate gradient. 4. These observations suggest that bracken spermatozoids are sensitive to the bimalate ion rather than the malate ion. This is consistent with an earlier suggestion that chemotactic activity is associated with the cis-configuration, for the bimalate ion will have this configuration, while the malate ion and the malic acid molecule will have the trans-configuration.


Item Type:Article
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http://jeb.biologists.org/cgi/content/abstract/35/1/192PublisherUNSPECIFIED
Additional Information:Published by Company of Biologists 1958. (Received 10 August 1957) This work has been carried out during the tenure of a National Science Foundation Predoctoral Fellowship. I am also indebted to Prof. G. Kenner for suggesting that the configurations of malate in solution might be significant, and to Lord Rothschild for introducing me to bracken sperm chemotaxis.
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National Science FoundationUNSPECIFIED
Record Number:CaltechAUTHORS:BROjeb58a
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BROjeb58a
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11635
Collection:CaltechAUTHORS
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Deposited On:15 Sep 2008 04:34
Last Modified:26 Dec 2012 10:17

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