<P>Ethanolamine is important for synthesis of choline, phosphatidylethanolamine (PE) and phosphatidylcholine (PC) in plants. The latter two phospholipids are the major phospholipids in eukaryotic membranes. In plants, ethanolamine is mainly synt...
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https://www.riss.kr/link?id=A107659855
2012
-
SCOPUS,SCIE
학술저널
3176-3188(13쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>Ethanolamine is important for synthesis of choline, phosphatidylethanolamine (PE) and phosphatidylcholine (PC) in plants. The latter two phospholipids are the major phospholipids in eukaryotic membranes. In plants, ethanolamine is mainly synt...
<P>Ethanolamine is important for synthesis of choline, phosphatidylethanolamine (PE) and phosphatidylcholine (PC) in plants. The latter two phospholipids are the major phospholipids in eukaryotic membranes. In plants, ethanolamine is mainly synthesized directly from serine by serine decarboxylase. Serine decarboxylase is unique to plants and was previously shown to have highly specific activity to <SMALL>L</SMALL>-serine. While serine decarboxylase was biochemically characterized, its functions and importance in plants were not biologically elucidated due to the lack of serine decarboxylase mutants. Here we characterized an <I>Arabidopsis</I> mutant defective in serine decarboxylase, named <I>atsdc-1</I> (<I><U>A</U>rabidopsis <U>t</U>haliana <U>s</U>erine <U>d</U>e<U>c</U>arboxylase-1</I>). The <I>atsdc-1</I> mutants showed necrotic lesions in leaves, multiple inflorescences, sterility in flower, and early flowering in short day conditions. These defects were rescued by ethanolamine application to <I>atsdc-1</I>, suggesting the roles of ethanolamine as well as serine decarboxylase in plant development. In addition, molecular analysis of serine decarboxylase suggests that <I>Arabidopsis</I> serine decarboxylase is cytosol-localized and expressed in all tissue.</P>
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