Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 62, Issue 13, Pages 4595-4604Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/err178
Keywords
Golgi; monosaccharide transporter; NaCl stress; Oryza sativa L; rice; SGB1
Categories
Funding
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [30821007]
- NIGMS [R01GM065989]
- DOE [DE-FG02-05er15671]
- NSF [MCB-0723515, MCB-0718202]
- Direct For Biological Sciences
- Div Of Molecular and Cellular Bioscience [0723515] Funding Source: National Science Foundation
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Sugar transport is critical for normal plant development and stress responses. However, functional evidence for the roles of monosaccharide transporters in rice (Oryza sativa) has not previously been presented. In this study, reversed genetics was used to identify OsGMST1 as a member of the monosaccharide transporter family in rice. The predicted 481 amino acid protein has the typical features of a sugar transporter in the plastid glucose transporter subfamily consistent with reduced monosaccharide accumulation in plants with reduced OsGMST1 expression. OsGMST1-green fluorescent protein is localized to the Golgi apparatus. OsGMST1 expression is induced by salt treatment and reduced expression confers hypersensitivity to salt stress in rice. OsGMST1 may play a direct or an indirect role in tolerance to salt stress in rice.
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