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Metabolic Control of Tobacco Pollination by Sugars and Invertases

Goetz, Marc ; Guivarćh, Anne ; Hirsche, Jörg ; Bauerfeind, Martin Andreas ; González, María-Cruz ; Hyun, Tae Kyung ; Eom, Seung Hee ; Chriqui, Dominique ; Engelke, Thomas ; Großkinsky, Dominik K. ; Roitsch, Thomas



Abstract

Pollination in flowering plants is initiated by germination of pollen grains on stigmas followed by fast growth of pollen tubes representing highly energy-consuming processes. The symplastic isolation of pollen grains and tubes requires import of Suc available in the apoplast. We show that the functional coupling of Suc cleavage by invertases and uptake of the released hexoses by monosaccharide ...

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