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Arabidopsis Serine Decarboxylase Mutants Implicate the Roles of Ethanolamine in Plant Growth and Development

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Title
Arabidopsis Serine Decarboxylase Mutants Implicate the Roles of Ethanolamine in Plant Growth and Development
Other Titles
atscd 돌연변이체를 이용한 에탄올아민이 식물발달에 미치는 영향 규명
Authors
Kwon, Yerim
Jian-Kang Zhu
Yim, Joung Han
Lee, Byeong-ha
Lee, Hyoungseok
Yu, Si-in
Subject
Biochemistry & Molecular Biology; Chemistry
Keywords
Arabidopsis; environmental stress; ethanolamine; serine decarboxylase
Issue Date
2012
Publisher
MDPI
Citation
Kwon, Yerim, et al. 2012. "Arabidopsis Serine Decarboxylase Mutants Implicate the Roles of Ethanolamine in Plant Growth and Development". INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, 13(3): 3176-3188.
Abstract
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 L-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 Arabidopsis mutant defective in serine decarboxylase, named atsdc-1 (Arabidopsis thaliana serine decarboxylase-1). The atsdc-1 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 atsdc- 1, suggesting the roles of ethanolamine as well as serine decarboxylase in plant development. In addition, molecular analysis of serine decarboxylase suggests that Arabidopsis serine decarboxylase is cytosol-localized and expressed in all tissue.y synthesized directly from serine by serine decarboxylase. Serine decarboxylase is unique to plants and was previously shown to have highly specific activity to L-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 Arabidopsis mutant defective in serine decarboxylase, named atsdc-1 (Arabidopsis thaliana serine decarboxylase-1). The atsdc-1 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 atsdc- 1, suggesting the roles of ethanolamine as well as serine decarboxylase
URI
http://repository.kopri.re.kr/handle/201206/6514
DOI
http://dx.doi.org/10.3390/ijms13033176
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