Effects of mesophyll water potential on photosynthesis in Gramineae plants: with special reference to phylogeny of subfamilies

We selected several species from six Gramineae subfamilies and examined relationships between the photosynthetic rate and mesophyll water potential (ΨL). We used the oxygen electrode method originally devised by Ishii et al. and modified by Ishihara et al. Namely, we used a liquid -phase oxygen electrode and measured the O2 evolution rate

Effects of mesophyll water potential on photosynthesis in Cyperaceae plants: with special reference to phylogeny of tribes and decarboxylation sub-types

We examined the photosynthetic rates under water stress conditions in 43 Japanese Cyperaceae species using the same method used for Gramineae plants. Compared with Gramineae, the difference between C4 and C3 species was more distinct in Cyperaceae. Moreover, C4 Cyperaceae species were very susceptible to water stress like Panicoideae C4 species. These species belong to the NADP-ME subtype. It appears that the sensitivity of photosynthesis to water stress would be different depending on the decarboxylation sub-types