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  Over-expression of Arabidopsis thaliana SFD1/GLY1, the gene encoding plastid localized glycerol-3-phosphate dehydrogenase, increases plastidic lipid content in transgenic rice plants

Singh, V., Singh, P. K., Siddiqui, A., Singh, S., Banday, Z. Z., & Nandi, A. K. (2016). Over-expression of Arabidopsis thaliana SFD1/GLY1, the gene encoding plastid localized glycerol-3-phosphate dehydrogenase, increases plastidic lipid content in transgenic rice plants. JOURNAL OF PLANT RESEARCH, 129(2), 285-293. doi:10.1007/s10265-015-0781-0.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-0DB8-5 Version Permalink: https://hdl.handle.net/21.11116/0000-000E-0DBA-3
Genre: Journal Article

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https://doi.org/10.1007/s10265-015-0781-0 (Publisher version)
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 Creators:
Singh, Vijayata1, Author
Singh, Praveen Kumar1, 2, Author
Siddiqui, Adnan1, Author
Singh, Subaran1, Author
Banday, Zeeshan Zahoor1, Author
Nandi, Ashis Kumar1, Author
Affiliations:
1external, ou_persistent22              
2Max Planck Institute for Terrestrial Microbiology_others, Max Planck Institute for Terrestrial Microbiology, Max Planck Society, Karl-von Frisch Str. 10, 35043 Marburg, Germany, ou_3556424              

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 Abstract: Lipids are the major constituents of all membranous structures in plants. Plants possess two pathways for lipid biosynthesis: the prokaryotic pathway (i.e., plastidic pathway) and the eukaryotic pathway (i.e., endoplasmic-reticulum (ER) pathway). Whereas some plants synthesize galactolipids from diacylglycerol assembled in the plastid, others, including rice, derive their galactolipids from diacylglycerols assembled by the eukaryotic pathway. Arabidopsis thaliana glycerol-3-phosphate dehydrogenase (G3pDH), coded by SUPPRESSOR OF FATTY ACID DESATURASE 1 (SFD1; alias GLY1) gene, catalyzes the formation of glycerol 3-phosphate (G3p), the backbone of many membrane lipids. Here SFD1 was introduced to rice as a transgene. Arabidopsis SFD1 localizes in rice plastids and its over-expression increases plastidic membrane lipid content in transgenic rice plants without any major impact on ER lipids. The results suggest that over-expression of plastidic G3pDH enhances biosynthesis of plastid-localized lipids in rice. Lipid composition in the transgenic plants is consistent with increased phosphatidylglycerol synthesis in the plastid and increased galactolipid synthesis from diacylglycerol produced via the ER pathway. The transgenic plants show a higher photosynthetic assimilation rate, suggesting a possible application of this finding in crop improvement.

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 Dates: 2016
 Publication Status: Issued
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 Rev. Type: -
 Identifiers: ISI: 000370861800017
DOI: 10.1007/s10265-015-0781-0
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Title: JOURNAL OF PLANT RESEARCH
Source Genre: Journal
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Pages: - Volume / Issue: 129 (2) Sequence Number: - Start / End Page: 285 - 293 Identifier: ISSN: 0918-9440