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Science 11 March 1994:
Vol. 263. no. 5152, pp. 1449 - 1452
DOI: 10.1126/science.8128230
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Articles

Science, Vol 263, Issue 5152, 1449-1452
Copyright © 1994 by American Association for the Advancement of Science

articles

Autonomy and nonautonomy in cell fate specification of muscle in the Caenorhabditis elegans embryo: a reciprocal induction

R Schnabel

Max-Planck-Institut fur Biochemie, Martinsried, Munchen, Germany.

EMS, a blastomere of the Caenorhabditis elegans embryo, produces body wall muscle cell-autonomously in isolation. Within the embryonic context, however, the specification of body wall muscle derived from EMS depends on inductive interactions between its daughter MS and ABa descendants that are required to overcome inhibitory interactions with other cells. The inductive events between the MS and ABa descendants are reciprocal, specifying subsequent fates in both lineages. Both induction events are blocked by mutations in the gene glp-1, known to encode a Notch-like transmembrane receptor protein.


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