C3 gas-exchange analyses read bundle-sheath refixation in C3-C4 intermediate leaves as negative day respiration
C3-C4 intermediate (C2) plants decarboxylate photorespiratory glycine in the bundle sheath, where Rubisco refixes some of the released CO2, yet researchers analyze their gas exchange with methods built for C3 leaves. I calibrated the C3-C4 model of von Caemmerer against published compensation points and Laisk measurements on C3 and C2 Flaveria and relatives at 36 {degrees}C, and analyzed the…
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