Differential accumulation of plastid transcripts encoding photosystem II components in the mesophyll and bundle-sheath cells of monocotyledonous NADP-malic enzyme-type C4 plants.

As a first step in understanding the differential expression of the plastid-encoded photosystem II (PSII) genes in mesophyll and bundle-sheath cells, we have used RNA blotting techniques to investigate the transcript patterns of these genes in three NADP-malic enzymetype C4 species: Zea mays L., Sorghum bicolor (L.) Moench and Pennisetum americanum (L.