Mysteries of mannose revealed

Chris Somerville CRS at andrew.stanford.edu
Thu Mar 13 20:56:28 EST 1997


In response to the question by Tobias:
Mannose is a well known herbicide because it is a substrate for
hexokinase but the mannose phosphate cannot be further metabolized so
it ties up all the phosphate in the cell.
CHris

------- Forwarded Message Follows -------
Date:          Thu, 13 Mar 1997 14:35:06 -0600
From:          Tobias Baskin <baskin at biosci.mbp.missouri.edu>
Subject:       germination and mannose

Greetings,
          Does mannose inhibit germination? In arabidopsis? In another
plant? We plated some arabidopsis on our usual nutrient medium with mannose
replacing the sucrose and after 10 days only a few percent of seeds had
germinated (and then only barely). Controls on sucrose were lovely. I am
wondering, is this effect of mannose "well known" to germination
afficianados? Or should I suspect the mannose was contaminated with, say,
arsenic?
        Thanks in advance for any info.

        Tobias Baskin

      _      ____   ^      __   ____   Tobias I. Baskin
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