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A putative plastidic glucose translocator is expressed in heterotrophic tissues that do not contain starch, during olive (Olea europea L.) fruit ripening

Butowt, R. (Estacian Experimental del Zaidin, Granada (Spain)) ; Granot, D ; Rodriguez-Garcia, M.I

Plant and cell physiology, 2003-11, Vol.44 (11), p.1152-1161 [Periódico revisado por pares]

Japan: Oxford University Press

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Título:
A putative plastidic glucose translocator is expressed in heterotrophic tissues that do not contain starch, during olive (Olea europea L.) fruit ripening
Autor: Butowt, R. (Estacian Experimental del Zaidin, Granada (Spain)) ; Granot, D ; Rodriguez-Garcia, M.I
Assuntos: Amino Acid Sequence ; Base Sequence ; Blotting, Northern ; Blotting, Southern ; CAM ; CHLOROPLASTS ; crassulacean acid-metabolism ; DNA Primers ; FRUITING ; G1P ; G6P ; GLUCOSE ; glucose 6 phosphate ; glucose-1-phosphate ; Keywords: Chromoplasts — Fruit ripening — pGlcT — Plastidic glucose translocator — Olea europea L. — Olive ; Molecular Sequence Data ; Monosaccharide Transport Proteins - chemistry ; Monosaccharide Transport Proteins - metabolism ; Olea - metabolism ; Olea - physiology ; OLEA EUROPAEA ; open reading frame ; ORF ; PEP ; pGlcT ; phosphorylated pyruvate ; plastidic glucose translocator ; Plastids - metabolism ; Sequence Homology, Amino Acid ; Starch - metabolism ; TRANSLOCATION ; triose phosphate ; WAA ; weeks after anthesis
É parte de: Plant and cell physiology, 2003-11, Vol.44 (11), p.1152-1161
Notas: F60
F62
2004006426
local:pcg149
istex:4E0A54C96841AFE9AB69D9E67D4B0BCC2CE233CE
ark:/67375/HXZ-3R1XPM9P-S
Received March 13, 2003; Accepted August 19, 2003
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: Metabolite-specific transporters are present in the inner membrane of the plastid envelope allowing transport between the plastid and other cellular compartments. A plastidic glucose translocator (pGlcT), in leaf mesophyll cells transports glucose from chloroplast stroma to the cytosol after amylolytic starch degradation at night. Here we report the cloning of a pGlcT expressed in olive fruits (Olea europea L.). Our results showed high expression of pGlcT in non-green heterotrophic fruit tissues. Expression of pGlcT in olive fruits was somewhat higher compared to leaves, and continued until the black, mature fruit stage. We cloned part of tomato pGlcT and found that it is also expressed throughout fruit development implying a role for pGlcT in heterotrophic tissues. Light and electron microscopic characterization of plastid structural changes during olive fruit ripening revealed the transition of chloroplast-like plastids into starchless, non-green plastids; in mature olive fruits only chromoplasts were present. Together, these findings suggest that olive pGlcT is abundant in chromoplasts during structural changes, and provide evidence that pGlcT may play different physiological roles in ripening fruits and possibly in other non-photosynthetic organs.
Editor: Japan: Oxford University Press
Idioma: Inglês

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A putative plastidic glucose translocator is expressed in heterotrophic tissues that do not contain starch, during olive (Olea europea L.) fruit ripening

Butowt, R. (Estacian Experimental del Zaidin, Granada (Spain)) ; Granot, D ; Rodriguez-Garcia, M.I

Japan: Oxford University Press

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