Small chloroplast-targeted DnaJ proteins are involved in optimization of photosynthetic reactions in <Emphasis Type="Italic">Arabidopsis thaliana</Emphasis> |
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| Authors: | Kun-Ming Chen Maija Holmström Wuttinun Raksajit Marjaana Suorsa Mirva Piippo Eva-Mari Aro |
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| Institution: | (1) Department of Biochemistry and Food Chemistry, Plant Physiology and Molecular Biology, University of Turku, FI-20014 Turku, Finland;(2) Institute of Crop Sciences, College of Agriculture and Biotechnology, Zhejiang University, 310029 Hangzhou, China |
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| Abstract: | Background DnaJ proteins participate in many metabolic pathways through dynamic interactions with various components of these processes.
The role of three small chloroplast-targeted DnaJ proteins, AtJ8 (At1 g80920), AtJ11 (At4 g36040) and AtJ20 (At4 g13830),
was investigated here using knock-out mutants of Arabidopsis thaliana. Photochemical efficiency, capacity of CO2 assimilation, stabilization of Photosystem (PS) II dimers and supercomplexes under high light illumination, energy distribution
between PSI and PSII and phosphorylation of PSII-LHCII proteins, global gene expression profiles and oxidative stress responses
of these DnaJ mutants were analyzed. |
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