Question: vacuole division

wise at VAXA.CIS.UWOSH.EDU wise at VAXA.CIS.UWOSH.EDU
Mon Nov 24 10:43:08 EST 1997


I got a "stump-the-prof" question this morning.  Meristematic cells have
several small vacuoles.  During cytokinesis, half of them migrate to
opposite division poles, coalesce, and enlarge to become the large central
vacuole of the new daughter cells.  However, how does vacuole division
occur in pith parenchyma cells (which presumably have a single central
vacuole) when they are induced to form callus tissue?  My guess is that the
single vacuole breaks into several smaller ones which then migrate to the
division poles just as in meristematic cells.  But if I'm right that begs
the question, what causes the single vacuole to separate into multiple
smaller ones?

Bob


Dr. Robert R. Wise
Department of Biology and Microbiology
University of Wisconsin-Oshkosh
Oshkosh, WI  54901

(920) 424-3404 tel
(920) 424-1101 fax
wise at uwosh.edu
www.uwosh.edu/departments/biology/wise/wise.html





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