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SUMMARY:Deconstructing Tip Growth Morphogenesis - Jacques  Dumais (Adolfo 
 Ibanez University)
DTSTART:20170907T140000Z
DTEND:20170907T150000Z
UID:TALK79581@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Growth and form in plant\, fungal\, and bacterial cells is ach
 ieved with two complementary processes: the deposition of new wall materia
 l at the cell surface and the mechanical deformation of this material by f
 orces developed within the cell.&nbsp\;&nbsp\;To understand how these two 
 processes contribute to cell growth\, we have undertaken a biophysical ana
 lysis of&nbsp\;one major mode of&nbsp\;cell morphogenesis called tip growt
 h\; whichrevealed that a few basic biophysical principles can explain all 
 essential features of tip growth.&nbsp\;&nbsp\;We first showed that the se
 emingly obscure surface expansion in these cells can be accounted for by t
 he dissipation of elastic energy in the wall.&nbsp\;&nbsp\;We also showed 
 that a simple force balance at the cell surface explains the striking abil
 ity of these cells to penetrate stiff environments.&nbsp\; Finally\, recen
 t experiments suggest that tip-growing cells regulate their shape by contr
 olling the spatial distribution of wall deposition.<br><br><br><br>
LOCATION:Seminar Room 2\, Newton Institute
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