Leaf disc el., glyceraldehyde + photorespiration
dradul at clark.net
Sat May 7 12:21:14 EST 1994
1. First you question obout photorespiration inhibition and glyceraldehide.
If I remember correctly (I am no biochemist), glyceraldehyde competes
for active sites with the enzime resposible for the photorespiration
mechanism. From an evolutionary perspective it seems that
photorespiration is adaptive under high CO2, high light conditions
as it protects plant tissue from the peroxyde rradicals produced
by Photo System II in the tylacoids. Of course this entirely open
to discussion and especulation. To know more read Plant Physiology
Third Edition by Salisbury and Ross, the best introductory text to
2. The transient change of oxygen evolution after one minute of high l
light exposure is a clear case os photoinhibition. Instead of
telling you what it is, I will point that one of the most active
professionals in this field is Bob Pearcey of University of California
at Davis. You will find all the papers he and his collaborators
(including my professor ;-)) have published in the last 4-5 years.
Check the Science Index.
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