Plant and Cell Physiology Supplement
Abstract of the Annual Meeting of JSPP 2011
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Increase in galactolipid synthesis enhances stress tolerance
Uddin Md. ImtiazYanhua QiTakayoshi KousoYin LinaAmin Elsadin EltayebNorihiro ShimomuraKenji MatsuiTakeshi Sakaki*Kiyoshi Tanaka
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Pages 0678

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Abstract
The role of rice monogalactosyldiacylglycerol synthase gene (OsMGD) was examined under salinity stress by overexpressing it in tobacco (Nicotiana tabacum L. SR1). The transgenic tobacco showed better growth and maintained higher photosystem II photon yield under salinity stress than wild type. The transgenic tobacco showed 2.0 to 4.5 folds higher MGD activity than wild type and singnificantly higher contents of monogalactosyldiacylglycerol and digalactosyldiacylglycerol than wild type. Subcellular localization confirmed the presence of OsMGD protein in inner envelope of chloroplast. Ultrastructure observation of chloroplast showed slightly more dense grana structure in transgenic plant. Interestingly, the transgenic plant showed better growth in phosphorus deficient medium.
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© 2011 by The Japanese Society of Plant Physiologists
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