A physiological role of cyclic electron transport around photosystem I in sustaining photosynthesis under fluctuating light in rice

Scientific Reports
Wataru YamoriToshiharu Shikanai

Abstract

Plants experience a highly variable light environment over the course of the day. To reveal the molecular mechanisms of their photosynthetic response to fluctuating light, we examined the role of two cyclic electron flows around photosystem I (CEF-PSI)--one depending on PROTON GRADIENT REGULATION 5 (PGR5) and one on NADH dehydrogenase-like complex (NDH)--in photosynthetic regulation under fluctuating light in rice (Oryza sativa L.). The impairment of PGR5-dependent CEF-PSI suppressed the photosynthetic response immediately after sudden irradiation, whereas the impairment of NDH-dependent CEF-PSI did not. However, the impairment of either PGR5-dependent or NDH-dependent CEF-PSl reduced the photosynthetic rate under fluctuating light, leading to photoinhibition at PSI and consequently a reduction in plant biomass. The results highlight that (1) PGR5-dependent CEF-PSI is a key regulator of rapid photosynthetic responses to high light intensity under fluctuating light conditions after constant high light; and (2) both PGR5-dependent and NDH-dependent CEF-PSI have physiological roles in sustaining photosynthesis and plant growth in rice under repeated light fluctuations. The highly responsive regulatory system managed by CEF-PSI app...Continue Reading

References

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Citations

Mar 29, 2016·Plant Signaling & Behavior·Monica ColomboPaolo Pesaresi
Jun 30, 2016·Plant & Cell Physiology·Masaru Kono, Ichiro Terashima
Apr 10, 2017·Photosynthesis Research·Alexander G IvanovNorman P A Huner
Dec 16, 2017·Plant, Cell & Environment·Alejandro MoralesPaul C Struik
Apr 1, 2018·Physiologia Plantarum·Daisuke Takagi, Chikahiro Miyake
Nov 30, 2018·The Plant Journal : for Cell and Molecular Biology·Yugo Lima-MeloEva-Mari Aro
Feb 10, 2019·Physiologia Plantarum·João V A CerqueiraMilton C Lima Neto
Aug 16, 2017·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Peter J GollanEva-Mari Aro
Oct 17, 2019·Plant & Cell Physiology·Masaru KonoIchiro Terashima
Feb 26, 2020·Journal of Experimental Botany·Haruki KimuraWataru Yamori
Oct 24, 2019·Annals of Botany·Alexandrina StirbetGovindjee Govindjee
Apr 6, 2019·Frontiers in Plant Science·Catherine J NockJacqueline Batley
Jul 7, 2017·Journal of Zhejiang University. Science. B·Tao LuTian-Lai Li
Jun 28, 2019·Plant Direct·Lauri NikkanenEevi Rintamäki
Jun 12, 2020·The Plant Journal : for Cell and Molecular Biology·Lu ZhouGuangce Wang
Nov 22, 2018·Frontiers in Plant Science·Ginga Shimakawa, Chikahiro Miyake
Aug 14, 2019·Frontiers in Plant Science·Shin-Nosuke Hashida, Maki Kawai-Yamada
Oct 28, 2019·The Biochemical Journal·Elias KaiserUte Armbruster

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Methods Mentioned

BETA
light treatments
transgenic

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