NDLI: Cell behavior in traveling wave patterns of myxobacteria.

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Cell behavior in traveling wave patterns of myxobacteria.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Welch, R. Kaiser, D.
Description	Author Affiliation: Welch R ( Department of Developmental Biology, B300 Beckman Center, 279 Campus Drive, Stanford University, Stanford, CA 94305. USA.);
Abstract	Cells in the early stages of starvation-induced fruiting body development migrate in a highly organized periodic pattern of equispaced accumulations that move as traveling waves. Two sets of waves are observed moving in opposite directions with the same wavelength and speed. To learn how the behavior of individual cells contributes to the wave pattern, fluorescent cells were tracked within a rippling population. These cells exhibit at least three types of organized behavior. First, most cell movement occurs along the same axis as the rippling movement. Second, there is a high degree of cell alignment parallel to the direction of rippling, as indicated by the biased movement. Third, by controlling the reversal frequency, cell movement becomes periodic in a rippling field. The periodicity of individual cells matches the period of macroscopic rippling. This last behavior is unique to a rippling population and, on the basis of Myxococcus xanthus genetic data, we conclude that this periodicity is linked to the C signal, a nondiffusible cell contact-mediated signaling molecule. When two cells moving in opposite directions meet end to end, they transmit the C signal to each other and in response reverse their gliding direction. This model of traveling waves represents a new mode of biological pattern formation that depends on cell-contact interactions rather than reaction diffusion.
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	26
Volume Number	98
Language	English
Publisher	National Academy of Sciences
Publisher Date	2001-12-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Chemotaxis Myxococcus Xanthus Cytology Microscopy, Fluorescence Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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