Speaking of Kalanchoe...

Schmid, Katherine kschmid at butler.edu
Fri Feb 11 19:35:57 EST 2000


>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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