Abstract
Not all the K+ accumulated by guard cells when stomata open is balanced by CI- uptake and malate anions produced in the guard cells normally brings about complete charge balance (but see Section 9.4.2). The biosyn- thesis of malate, with starch as at least part of the carbon source, also results in the production of protons which may be pumped out of the guard cells by ATPase activity to maintain a driving force for K+ and CI- uptake. This chapter, therefore, concentrates on the carbon metabolism of guard cells paying particular attention to the pathway of carbon flow between starch and malate during stomatal movements and the regula- tion of this carbon flow. Several reviews are also to be found on this topic (e.g. Outlaw, 1982; Robinson and Preiss, 1985). Additionally, this chapter will deal with aspects on the role of guard cell chloroplasts, on the ener- getics of stomatal movements and on the lipid metabolism of guard cells.
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Willmer, C., Fricker, M. (1996). The metabolism of guard cells. In: Stomata. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0579-8_9
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