Understanding plants’ autophagy process of eliminating membrane-damaged chloroplasts – a discovery of autophagy selecting only chloroplasts with damaged membranes

May 31(Thu), 2018

Autophagy is a mechanism through which a living organism digests ingredients in its cells. A collaborative group consisting of Masanori Izumi, an assistant professor at the Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Jun Hidema, an associate professor at the Graduate School of Life Sciences, Tohoku University, Sakuya Nakamura, a student at the Graduate School of Life Sciences, Tohoku University, Hiroyuki Ishida, an associate professor at Graduate School of Agricultural Science, Tohoku University, and Wataru Sakamoto, a professor at the Okayama University Institute of Plant Science and Resources, observed in Arabidopsis, a model plant used in this research, that some chloroplasts that stored damaged membranes became swollen in shape when stressed by a strong light (Figure 1) and discovered the process in which autophagy selects and eliminates only such chloroplasts. This result can be applied to further research in improving the productivity and stress tolerance levels of crops by controlling the metabolism of chloroplasts in plants. This research achievement was published on May 10, 2018, in the digital version of “Plant Physiology,” a journal issued by the American Society of Plant Physiologists.

Article Information

DOI: https://doi.org/10.1104/pp.18.00444
Authors: Sakuya Nakamura, Jun Hidema, Wataru Sakamoto, Hiroyuki Ishida, Masanori Izumi
Journal: Plant Physiology
Title: Selective elimination of membrane-damaged chloroplasts via microautophagy
Year of Publication: July, 2018

Okayama University Silicon Valley Office (OUSVO)
Contact: Mototaka Senda, Ph.D.
Phone: (1)510-894-3067
E-mail: ousvo@okayama-u.ac.jp

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