Production of superoxide from Photosystem II in a rice (Oryza sativaL.) mutant lacking PsbS

Zulfugarov, Ismayil S.; Tovuu, Altanzaya; Eu, Young Jae; Dogsom, Bolormaa; Poudyal, Roshan Sharma; Nath, Krishna G.; Hall, Michael; Banerjee, Mainak; Yoon, Ung Chan; Moon, Yong-Hwan; An, Gynheung; Jansson, Stefan; Lee, Choon Hwan

doi:10.1186/s12870-014-0242-2

Cited by 72 publications

(55 citation statements)

References 106 publications

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“…This was partly supported by our results whereby the induction of NPQ was determined by the expression of both RVDE1 and PsbS1 under moderate light intensity (Figures 10A,B). Previous studies have indicated that the expression levels of genes coding PsbS and violaxanthin de-epoxidase were consistent with protein levels (Bugos and Yamamoto, 1996; Bugos et al, 1999; Ishida et al, 2011; Zulfugarov et al, 2014). However, under moderate light, the content of zeaxanthin and the relative expression of RVDE1 and PsbS1 of Chl-8 were significantly higher than Zhefu802 (Figures 9, 10).…”

Section: Discussionmentioning

confidence: 57%

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Non-photochemical Quenching Plays a Key Role in Light Acclimation of Rice Plants Differing in Leaf Color

et al. 2017

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Non-photochemical quenching (NPQ) is an important photoprotective mechanism in rice; however, little is known regarding its role in the photosynthetic response of rice plants with differing in leaf color to different irradiances. In this study, two rice genotypes containing different chlorophyll contents, namely Zhefu802 (high chlorophyll) and Chl-8 (low chlorophyll), were subjected to moderate or high levels of light intensity at the 6-leaf stage. Chl-8 possessed a lower chlorophyll content and higher chlorophyll a:b ratio compared with Zhefu802, while Pn, Fv/Fm, and ΦPSII contents were higher in Chl-8. Further results indicated that no significant differences were observed in the activities of Rubisco, Mg2+-ATPase, and Ca2+-ATPase between these genotypes. This suggested that no significant difference in the capacity for CO2 assimilation exists between Zhe802 and Chl-8. Additionally, no significant differences in stomatal limitation were observed between the genotypes. Interestingly, higher NPQ and energy quenching (qE), as well as lower photoinhibitory quenching (qI) and production of reactive oxygen species (ROS) was observed in Chl-8 compared with Zhefu802 under both moderate and high light treatments. This indicated that NPQ could improve photosynthesis in rice under both moderate and high light intensities, particularly the latter, whereby NPQ alleviates photodamage by reducing ROS production. Both zeaxanthin content and the expression of PsbS1 were associated with the induction of NPQ under moderate light, while only zeaxanthin was associated with NPQ induction under high light. In summary, NPQ could improve photosynthesis in rice under moderate light and alleviate photodamage under high light via a decrease in ROS generation.

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Section: Discussionmentioning

confidence: 57%

“…Rice ( Oryza sativa L.) has two PsbS genes, PsbS1 and PsbS2 . However, only inactivation of PsbS1 results in plants deficient in qE (Zulfugarov et al, 2014). The relative expressions of all genes, with the exception of OSABA2 , in Chl-8 were significantly higher than those in Zhefu802 under moderate light (Figure 10).…”

Section: Resultsmentioning

confidence: 99%

Non-photochemical Quenching Plays a Key Role in Light Acclimation of Rice Plants Differing in Leaf Color

et al. 2017

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“…The production of O 2 − can be detected using the dye NBT, forming dark blue insoluble formazan produced by the reaction of NBT. Histochemical staining for reactive oxidative species (ROS) production in leaf tissues has been used to identify sites of photo-oxidative stress responses in excess light [65], fluctuating light [66], enhanced ultraviolet-B radiation [67], and photoinhibitory illumination [68] as well as cadmium-treated stress [69] and water stress [70]. In-situ formation of H 2 O 2 can be visualized as reddish-brown coloration by forming perhydroxides precipitate or brown DAB-H 2 O 2 polymer [71,72].…”

Section: Discussionmentioning

confidence: 99%

Night Light-Adaptation Strategies for Photosynthetic Apparatus in Yellow-Poplar (Liriodendron tulipifera L.) Exposed to Artificial Night Lighting

Kwak

Cheng

et al. 2018

Forests

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Abstract:Plants can undergo external fluctuations in the natural light and dark cycle. The photosynthetic apparatus needs to operate in an appropriate manner to fluctuating environmental factors, especially in light. Yellow-poplar seedlings were exposed to nighttime artificial high-pressure sodium (HPS) lighting to evaluate night light-adaptation strategies for photosynthetic apparatus fitness relative to pigment contents, photosystem II photochemistry, photosynthetic parameters, histochemical analysis of reactive oxygen species, and plant biomass. As a result, seedlings exhibited dynamic changes including the enhancement of accessory pigments, the reduction of photosystem II photochemistry, increased stomatal limitation, downregulation of photosynthesis, and the decreased aboveground and belowground biomass under artificial night lighting. Histochemical analysis with 3,3 -diaminobenzidine (DAB) and nitroblue tetrazolium (NBT) staining indicates the accumulation of in situ superoxide radicals (O 2 − ) and hydrogen peroxide (H 2 O 2 ) in leaves exposed to the lowest level of artificial night lighting compared to control. Moreover, these leaves exposed to artificial night lighting had a lower nighttime respiration rate. These results indicated that HPS lighting during the night may act as a major factor as repressors of the fitness of photosynthesis and growth patterns, via a modification of the photosynthetic light harvesting apparatus.

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“…It has been demonstrated that PsbS knock-out rice mutants produced more O 2 •– compared to WT under high light (Zulfugarov et al, 2014). The authors proposed that the lack of PsbS may cause shift in the midpoint redox potential of Q A /Q A •– redox couple to more negative value and thus enhance O 2 •– production by Q A •– .…”

Section: High Lightmentioning

confidence: 99%

Production of Reactive Oxygen Species by Photosystem II as a Response to Light and Temperature Stress

2016

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The effect of various abiotic stresses on photosynthetic apparatus is inevitably associated with formation of harmful reactive oxygen species (ROS). In this review, recent progress on ROS production by photosystem II (PSII) as a response to high light and high temperature is overviewed. Under high light, ROS production is unavoidably associated with energy transfer and electron transport in PSII. Singlet oxygen is produced by the energy transfer form triplet chlorophyll to molecular oxygen formed by the intersystem crossing from singlet chlorophyll in the PSII antennae complex or the recombination of the charge separated radical pair in the PSII reaction center. Apart to triplet chlorophyll, triplet carbonyl formed by lipid peroxidation transfers energy to molecular oxygen forming singlet oxygen. On the PSII electron acceptor side, electron leakage to molecular oxygen forms superoxide anion radical which dismutes to hydrogen peroxide which is reduced by the non-heme iron to hydroxyl radical. On the PSII electron donor side, incomplete water oxidation forms hydrogen peroxide which is reduced by manganese to hydroxyl radical. Under high temperature, dark production of singlet oxygen results from lipid peroxidation initiated by lipoxygenase, whereas incomplete water oxidation forms hydrogen peroxide which is reduced by manganese to hydroxyl radical. The understanding of molecular basis for ROS production by PSII provides new insight into how plants survive under adverse environmental conditions.

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Production of superoxide from Photosystem II in a rice (Oryza sativaL.) mutant lacking PsbS

Cited by 72 publications

References 106 publications

Non-photochemical Quenching Plays a Key Role in Light Acclimation of Rice Plants Differing in Leaf Color

Non-photochemical Quenching Plays a Key Role in Light Acclimation of Rice Plants Differing in Leaf Color

Night Light-Adaptation Strategies for Photosynthetic Apparatus in Yellow-Poplar (Liriodendron tulipifera L.) Exposed to Artificial Night Lighting

Production of Reactive Oxygen Species by Photosystem II as a Response to Light and Temperature Stress

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