Molecular mechanisms of desiccation-tolerance in the Pyropia yezoensis chloroplast translation system

2014 Fiscal Year Final Research Report

• Project/Area Number: 24580303
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Fisheries chemistry
• Research Institution: Nagasaki University
• Principal Investigator: YAMAGUCHI Kenichi 長崎大学, 水産・環境科学総合研究科(水産), 准教授 (90363473)
• Co-Investigator(Kenkyū-buntansha): ODA Tatsuya 長崎大学, 水産・環境科学総合研究科(水産), 教授 (60145307) ; KUWANO Kazuyoshi 長崎大学, 水産・環境科学総合研究科(水産), 教授 (60301363)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: リボソームタンパク質 / LEA / 葉緑体 / スサビノリ

Outline of Final Research Achievements

Desiccation-tolerant leafy gametophyte of the red alga Pyropia yezoensis is commercially important marine crop for the major source of dried Nori (Nori sheets). We recently found that dried Nori contains abundant chloroplast ribosomes as 70S-type particles. In this study, we explored proteinaceous factors, which may confer desiccation-tolerance and heat-stability, by means of proteomic approaches. Consequently, we found novel LEA-like proteins that are likely localized in the chloroplast stroma. We also suggest that the protein composition of P. yezoensis chloroplast ribosome and its translation factors resembles that of mesophilic bacteria (e.g., E. coli).

Free Research Field

水圏生命科学