Park Ki Youl, Kim Woo Taek, Kim Eun Yu
Department of Systems Biology, College of Life Sciences and Biotechnology, Yonsei University, Seoul 03722, South Korea.
Department of Systems Biology, College of Life Sciences and Biotechnology, Yonsei University, Seoul 03722, South Korea.
Biochem Biophys Res Commun. 2018 Jan 8;495(2):1885-1889. doi: 10.1016/j.bbrc.2017.12.068. Epub 2017 Dec 13.
Arabidopsis LD surface proteins, SRPs are found only in higher plants and are important for LD biogenesis and abiotic stress signaling. However, the cellular mechanism of SRPs is still unclear. To investigate molecular functions of SRPs, we used tobacco transient expression system. Transient expression of SRPs was sufficient and synergistic for LD biogenesis, and SRPs participated in the formation step of LD in tobacco leaves. RESPONSIVE TO DESICCATION 20 (RD20), a known LD-localizing peroxygenase, localized to LD in the presence of an SRP, and its peroxygenase activity correlated with proper localization of RD20 to LD. Our data suggest that Arabidopsis SRPs play roles as positive factors for LD biogenesis to provide a proper localization of LD-localizing proteins in vegetative tissues.
