Solar radiation-induced chloroplast damage and the clearance systems of damaged chloroplasts including autophagy

2016 Fiscal Year Final Research Report

• Project/Area Number: 26506001
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: 宇宙生命学
• Research Institution: Tohoku University
• Principal Investigator: IZUMI Masanori 東北大学, 学際科学フロンティア研究所, 助教 (80714956)
• Co-Investigator(Renkei-kenkyūsha): HIDEMA Jun 東北大学, 大学院生命科学研究科, 准教授 (20250855) ; HIGASHITANI Atsushi 東北大学, 大学院生命科学研究科, 教授 (40212162)
• Research Collaborator: NAKAMURA Sakuya 東北大学, 大学院生命科学研究科, 大学院生
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 葉緑体 / 宇宙放射線 / 光障害 / オートファジー / クロロファジー / 紫外線 / 植物 / シロイヌナズナ

Outline of Final Research Achievements

In this study, we focused on the chloroplast damage due to solar radiation and the clearance system of damaged chloroplasts in Arabidopsis plants. The data supports three major conclusions as follow; (i) the property of chloroplast damage varies due to the type of radiation, (ii) autophagy plays an important role in plant response to UVB damage, (iii) Photodamage induces the digestion of entire collapsed chloroplasts by an autophagy process termed chlorophagy.

Free Research Field

植物細胞生物学