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SUMMARY:C-elegans elongation before hatching: a biomechanical point of vie
 w - Martine Ben Amar (CNRS - Ecole Normale Superieure Paris)
DTSTART:20230731T090000Z
DTEND:20230731T100000Z
UID:TALK202318@talks.cam.ac.uk
DESCRIPTION:Anna Dai and Martine Ben Amar\nLPENS&nbsp\; & Sorbonne Univers
 ity\nThe embryonic elongation of C. elegans&nbsp\; represents an attractiv
 e model of matter reorganization occurring without mass increase in an ini
 tial egg. Within four hours\, the embryo elongates along the anterior/post
 erior axis by four times and its circumference reduces one-third. Unlike t
 he embryonic development of Drosophila and Zebrafish\, there is neither ce
 ll migration\, cell division nor a notable change but only a noticeable ep
 idermis elongation which &nbsp\;drives the whole morphogenetic before hatc
 hing. The identified driving forces are &nbsp\;the actomyosin contractilit
 y &nbsp\;of&nbsp\; the epidermis and the muscle activity that starts after
  the 1.8-fold stage. The late elongation shows cyclic periods of bending\,
  rotation and torsion depending on the activation of the muscles. In this 
 talk I will present experimental results of the Labouesse&rsquo\;s group a
 nd models which explain the role of the different active filaments in the 
 embryo.
LOCATION:Seminar Room 1\, Newton Institute
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