>jgreenberg at hal.bscs.org wrote:
>Presumably the C4s acidify in light and the C3s change little?
When my students checked pH of Kalanchoe leaf extract every 3
hours over a 24 hour period, the pH fell from 8 A.M. - 2 P.M., and
rose from 8 P.M. until 2 A.M. Last time I brought these results
or a similar lot to the group, I think someone suggested that
Kalanchoe was only facultatively CAM, otherwise C4. So maybe this
counts as a C4 pattern? The plants were greenhouse grown during
fall semester, and the pH ranged from 5.2 to 3.9.
Any suggestions on how to force the Kalanchoe to CAM? (drought?
ABA?)
_____________________________
Dr. Katherine M. Schmid
Dept. of Biological Sciences
Butler University
4600 Sunset Ave.
Indianapolis IN 46208
317-940-9956
kschmid at butler.edu
-----Original Message-----
Anyone tried it or know about this?
Jon
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