Department of Environmental Life Sciences
Division of Genetic Ecology

Genomic Reproductive Biology 分野

Masanori Izumi
キャンパス Katahira キャンパス
専攻分野 Plant Science
連絡先 +81-22-217-5745

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I am trying to the elucidation of molecular mechanisms for chloroplast degradation in plants.


March 2012,            PhD, Graduate School of Agricultural 
                              Sciences, Tohoku University
April 2012- March 2014 Postdoctoral research fellowship 
                              for young scientists from the Japan 
                              Society for the Promotion of Science
                              (JSPS), Graduate School of Life 
                              Sciences, Tohoku University
April 2014- Assistant Professor, Frontier Research 
                              Institute for Interdisciplinary Sciences
                              (FRIS), Tohoku University
August 2015 -December 2015 Visiting Researcher, University of Oxford, UK


Izumi M, Hidema J, Wada S, Kondo E, Kurusu T, Kuchitsu K, Makino A, Ishida H. (2015) Establishment of monitoring methods for autophagy in rice reveals autophagic recycling of chloroplasts and root plastids during energy limitation. Plant Physiology vol. 167: pp. 1307-1320


Takahashi S, Teranishi M, Izumi M, Takahashi M, Takahashi F, Hidema J. (2014) Transport of rice cyclobutane pyrimidine dimer (CPD) photolyase into mitochondria relies on a targeting sequence located in its C-terminal internal region. The Plant Journal vol.79: pp.951-963


Ishida H, Izumi M, Wada S, Makino A (2014) Roles of autophagy in chloroplast recycling. Biochimica et Biophysica Acta - Bioenergetics vol.1837: pp.512-521


Izumi M, Hidema J, Makino A, Ishida H (2013) Autophagy contributes to nighttime energy availability for growth in Arabidopsis. Plant Physiology vol.161: pp.1682-1693


Ono Y, Wada S, Izumi M, Makino A, Ishida H (2013) Evidence for contribution of autophagy to Rubisco degradation during leaf senescence in Arabidopsis thaliana. Plant, Cell and Environment vol.36: pp.1147-1159


Izumi M, Tsunoda H, Suzuki Y, Makino A, Ishida H(2012) RBCS1A and RBCS3B, two major members within the Arabidopsis RBCS multigene family,function to yield sufficient Rubisco content for leaf photosynthetic capacity. Journal of Experimental Botany vol.63: pp.2159-2170


Izumi M, Wada S, Makino A, Ishida H (2010) The autophagic degradation of chloroplasts via Rubisco-containing bodies is specifically linked to leaf carbon status but not nitrogen status in Arabidopsis. Plant Physiology vol.154:pp.1196-1209


Wada S, Ishida H, Izumi M, Yoshimoto K, Ohsumi Y, Mae T, Makino A (2009) Autophagy plays a role in chloroplast degradation during senescence in individually darkened leaves. Plant Physiology vol.149:pp.885-893  


Ishida H, Yoshimoto K, Izumi M, Reisen D, Yano Y, Makino A, Ohsumi Y, Hanson MR, Mae T (2008) Mobilization of Rubisco and stroma-localized fluorescent protein of chloroplasts to the vacuole by an ATG gene-dependent autophagic process. Plant Physiology vol.148:pp.142-155




Japanese Society of Soil Science and Plant
Nutrition (JSSSPN), Japanese Society of Plant Physiologists (JSPP), Japanese
Society for Biological Sciences in Space (JSBSS)


  Chloroplasts are specific organelles to plant cells
for photosynthesis. We demonstrated that chloroplastic proteins are degraded
via a mechanism called autophagy, by which membrane-sequestered proteins and
organelles are delivered to the vacuole for degradation. Future aim of my study
is the uncovering of the molecular mechanisms of chloroplast degradation
including autophagy, and develop these achievement into the enhancement of
photosynthetic capacity and crop productivity.


have unique “power” such as photosynthetic conversion of solar energy and
atmospheric carbon dioxide into chemical energy and carbohydrates. Please know
that there are a lot of mysteries in the power of our neighboring plants.