期刊
CELL MOTILITY AND THE CYTOSKELETON
卷 66, 期 5, 页码 281-291出版社
WILEY-LISS
DOI: 10.1002/cm.20358
关键词
sperm motility; axoneme; dynein; foam nest; Rhacophorus
类别
资金
- Kyoto University [A06]
Fertilization of the green tree frog, Rhacophorus arboreus, occurs in the viscous environment of a foam nest, which is laid on vegetation. Their spermatozoa have it characteristic corkscrew-shaped head and a thick tail that extends perpendicularly to its longitudinal axis. However, it is unclear how these corkscrew-shaped spermatozoa move in this highly viscous environment. Here, we found that the spinning of the corkscrew-shaped head caused by winding and unwinding of the fail. enables the spermatozoa to move through the highly viscous environment of a foam nest, like a corkscrew rotating into a cork. We suggested that dislocations observed in the matrix of satellite microtubules surrounding two axonemes, reflected the planes of sliding of the axonemes, and dyneins on doublets two and six of each axoneme were active during winding and unwinding, respectively. These results provide a novel mechanism for sperm movement that is adapted specifically to a viscous fertilization, environment. Cell Motil. Cytoskeleton 66: 281-291, 2009. (C) 2009 Wiley-Liss, Inc.
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