Two Different Mechanisms for Transport of Pyruvate into Mesophyll Chloroplasts of C4Plants—a Comparative Study

摘要

Thirty-eight C4species including both mono- and dicotyledons were surveyed for light-enhanced pyruvate uptake into mesophyll chloroplasts and tested whether this enhancement could be mimicked by either a“sodium jump”or a“proton jump”of the medium in the dark. The majority of species responded to a sodium jump, while only species of the Andropogoneae and the Arundinelleae from the Gramineae responded to a prot