期刊
PHOTOSYNTHESIS RESEARCH
卷 130, 期 1-3, 页码 469-478出版社
SPRINGER
DOI: 10.1007/s11120-016-0284-4
关键词
Blue native gel electrophoresis; Fe deficiency; Light-harvesting complexes; Photochemistry; Photosystem II; Thylakoid organization
资金
- Council of Scientific and Industrial Research [38(1279)/11/EMR-II, 38 (1381)/14/EMR-II]
- Department of Biotechnology [BT-BRB-TF-1-2012]
- Department of Science and Technology [DST/INT/JSPS/P-159/2013]
- DST-FIST, Govt. of India
- RGNF, UGC, India
A trace element, iron (Fe) plays a pivotal role in photosynthesis process which in turn mediates the plant growth and productivity. Here, we have focused majorly on the photochemistry of photosystem (PS) II, abundance of proteins, and organization of supercomplexes of thylakoids from Fe-depleted cells in Chlamydomonas reinhardtii. Confocal pictures show that the cell's size has been reduced and formed rosette-shaped palmelloids; however, there is no cell death. Further, the PSII photochemistry was reduced remarkably. Further, the photosynthetic efficiency analyzer data revealed that both donor and acceptor side of PSII were equally damaged. Additionally, the room-temperature emission spectra showed the fluorescence emission maxima increased due to impaired energy transfer from PSII to PSI. Furthermore, the protein data reveal that most of the proteins of reaction center and light-harvesting antenna were reduced in Fe-depleted cells. Additionally, the supercomplexes of PSI and PSII were destabilized from thylakoids under Fe-deficient condition showing that Fe is an important element in photosynthesis mechanism.
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