水と炭素の交差点としての葉
Cross-point of water and carbon in the leaf

Yusuke Mizokami, Ichiro Terashima
2016 Nihon Seitai Gakkaishi  
CO 2 is used for carboxylation in chloroplast stroma, and diffuses in through stomata, intercellular air spaces, the cell wall, plasma membranes, and the chloroplast envelope. Stomatal resistance (R s ) and mesophyll resistance (R m ) occur in this pathway, the inverse of which are stomatal conductance (g s ) and mesophyll conductance (g m ), respectively, metrics used as indicators of conductivity. g m is comparable to g s and therefore important for photosynthesis. There are three ways to
more » ... e three ways to measure g m : the chlorophyll fluorescence, curve-fitting, and stable carbon isotope methods. Here, we explain these methods and critical points in their respective measurements. The most reliable is the stable carbon isotope method, but parameter setting is difficult because small differences 特集 4 478 CO 2 CO 2 CO 2 CO 2 / Rubisco
doi:10.18960/seitai.66.2_477 fatcat:t2xt6d35kbgclbxtjhu4v2cesq