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Metabolic control of tobacco pollination by sugars and invertases

Opened Access Metabolic control of tobacco pollination by sugars and invertases

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Autor: González García, María de la Cruz
Goetz, M.
Guivar'cn, Anne
Hirsche, J.
Bauerfeind, M.A.
Departamento: Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
Fecha: 2017
Publicado en: Plant Physiology, 173 (1), 984-997.
Tipo de documento: Artículo
Resumen: 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 transporters are critical for pollination in tobacco (Nicotiana tabacum). Transcript profiling, in situ hybridization, and immunolocalization of extracellular invertases and two monosaccharide transporters in vitro and in vivo support the functional coupling in supplying carbohydrates for pollen germination and tube growth evidenced by spatiotemporally coordinated expression. Detection of vacuolar invertases in maternal tissues by these approaches revealed metabolic cross talk between male and female tissues and supported the requirement for carbohydrate supply in transmitting tissue during pol...
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Cita: González García, .C., Goetz, M., Guivar'cn, A., Hirsche, J. y Bauerfeind, M.A. (2017). Metabolic control of tobacco pollination by sugars and invertases. Plant Physiology, 173 (1), 984-997.
Tamaño: 2.749Mb
Formato: PDF

URI: http://hdl.handle.net/11441/68198

DOI: 10.1104/pp.16.01601

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