Photoprotective mechanism pdf. mechanisms, and the promotion of other cytotoxic responses.

Photoprotective mechanism pdf Pascal and Jan 2, 2017 · Photoprotective and antioxidative mechanisms against oxidative damage in Fargesia rufa subjected to drought and salinity January 2017 Functional Plant Biology 44(3):302–311 In Nature, evolution has developed different photoprotective mechanisms that allow living beings to cope with the damaging effects of light. Banikb* , Sunny E. Oct 1, 2024 · This particular reaction has led to the assumption that photorespiration can serve as a photoprotective electron sink under some conditions [4]. The biosynthesis of strongly absorbing compounds and substances able to dissipate light energy work together with antioxidant compounds in order to avoid damage by the Sun. Smith et al. various photoprotective quenching mechanisms that have been Phytoplankton, such as diatoms, experience great variations of photon flux density (PFD) and light spectrum along the marine water column. discuss how photorespiration-impaired mutants cope somewhat better with fluctuating light (FL) environments because of downregulated photosynthesis and Nov 17, 2024 · Torreya grandis is a widely cultivated fruit species in China that is valued for its significant economic and agricultural importance. pdf Available via license: CC BY 4. The present study demonstrates a differential photoprotective and antioxidative mechanism of young and mature leaves to time-course Pq-induced oxidative stress. 1. Ko ehorst a , Aniek Jongerius a , Diana Kirilovsky c a nd Herbert van Jan 13, 2021 · Request PDF | UV-A/B radiation rapidly activates photoprotective mechanisms in Chlamydomonas reinhardtii | Conversion of light energy into chemical energy through photosynthesis in the Jul 27, 2010 · Optical screening – an integral part of a system of photoprotective mechanisms in plants. × Download Free PDF. May 1, 2023 · When photoautotrophic organisms sense excess light, they induce the mechanisms to avoid photodamage by triggering the expression of photoprotective genes (Lautenschlager et al. There are different forms of photo-protection, including the use of topical, oral, and mechanical photoprotection, and also the education in photoprotection. in situations where the efficiency of enzymatic ROS elimination, DNA repair and other ‘classical’ photoprotective systems could be impaired. • Nov 1, 2010 · A model of photoprotection mechanisms in plants. The photodamaged PSII is repaired through the de novo synthesis of Results of biophysical measurements indicate that the flv4-2 operon functions in an alternative electron transfer pathway from PSII, and thus alleviates PSII excitation pressure by channeling up to 30% of PSII-originated electrons. ) seedlings under NaCl and NaHCO 3 stress revealed by TMT-based proteomics analyses Author links open overlay panel Zhang Huihui a b 1 , Wang Yue b 1 , Li Xin a b , He Guoqiang c , Che Yanhui b , Teng Zhiyuan b , Shao Jieyu b , Xu Nan b d , Sun Guangyu b Mar 1, 2012 · Request PDF | Photoprotective mechanisms of leaf anthocyanins: Research progress | Anthocyanin is widely distributed in plant organs such as root, stem, leaf, flower and fruit, being a kind of 15. Jan 6, 2024 · Assessing behavioral and physiological photoprotective mechanisms in tropical solar-powered sea slugs exposed to natural light intensities January 2024 Marine Biology 171(2) Oct 31, 2008 · The accumulation of UV-absorbing compounds (mycosporine-like amino acids and phenolics in lower and higher plants, respectively) is a ubiquitous mechanism of adaptation to and protection from the damage by high fluxes of solar radiation developed by photoautotrophic organisms at the early stages of their evolution. Future applications for P May 1, 2020 · Request PDF | On May 1, 2020, Chiasa Uragami and others published Photoprotective mechanisms in the core LH1 antenna pigment-protein complex from the purple photosynthetic bacterium Jun 18, 2015 · Our results revealed that not only antioxidant enzyme activities but also other photoprotective mechanisms participate in A. Prolonged exposure of plants to high fluxes of solar radiation as well as to Light-harvesting complexes (LHCs) serve a dual role in photosynthesis, depending on the prevailing light conditions. In this Minireview, protective quenching components and mechanisms in various photosynthetic organisms are discussed. It is proposed that in vivo, FRP plays a key role in removing the red OCP from the phycobilisome and in the conversion of the free red O CP to the orange inactive form. Apr 6, 2018 · Some of these mechanisms overlap in certain organisms, which has evolutionary implications (8). Kennis and Andrew A. Download : Download high-res image (223KB) Jul 21, 2020 · UV-A radiation rapidly activates photoprotective mechanisms in Chlamydomonas reinhardtii Ryutaro 1,2*Tokutsu , Konomi Fujimura-Kamada1, Tomohito Yamasaki3, Keisuke Okajima1,2, and Jun Minagawa1,2* 1 Division of Environmental Photobiology, National Institute for Basic Biology, Nishigo-naka 38, Myodaiji, Okazaki 444-8585, Japan Apr 17, 2013 · 2. Photosynthetic organisms must balance light absorption and energy dissipation to prevent photo-oxidative damage Jul 10, 2022 · In any case, we might face a situation where numerous photoprotective mechanisms have been developed throughout the LHCII evolution, with different pieces as main or side mechanisms to be revealed by molecular simulations, or the experimental literature, dependent on the conditions, while the greater puzzle picture remains to be resolved . Von Bismarck et al. Read full-text. , 2008; Guan and Gu, 2009), to our knowledge, only few studies elucidate in detail during which stage of drought stress the energy dissipation by thermal processes and photorespiration act as May 26, 2018 · Request full-text PDF. Presence of hydroxyl groups at the β- and ε-rings imparts amphiphilic properties to lutein and allows its localization in the thylakoid membrane. Kono and I. Four grapevine cultivars, i. event in photodamage (reviewed in [2]). Adjustment of L theta toward the vertical was greatest under conditions of foliar N deficiency and became incrementally more horizontal with increasing foliar N Jul 31, 2014 · Request PDF | Superior Photoprotective Motifs and Mechanisms in Eumelanins Uncovered | Human pigmentation is a complex phenomenon commonly believed to serve a photoprotective function through the Apr 16, 2021 · The heart of the photoprotective mechanism lies in the molecular response to a transmembrane pH gradient (ΔpH). Jul 21, 2020 · NPQ is the mechanism through which excess light energy is dissipated, and is controlled by the photoprotective proteins LHC stress-related (LHCSR) and/or PSBS (Niyogi and Truong, 2013). Feb 23, 2024 · Request PDF | On Feb 23, 2024, Pawan Kumar and others published Current Insights on the Photoprotective Mechanism of the Macular Carotenoids, Lutein and Zeaxanthin: Safety, Efficacy and Bio Nov 16, 2011 · Site, rate and mechanism of photoprotective quenching in cyanobacteria. 0 Content may be subject to copyright. ) seedlings under NaCl and NaHCO3 stress revealed by TMT-based proteomics analyses Jan 24, 2014 · Diatoms have developed some rapidly-regulated photoprotective mechanisms, such as the xanthophyll cycle activation (XC) and the non-photochemical chlorophyll fluorescence quenching (NPQ), to Jul 22, 2020 · In the unicellular green alga Chlamydomonas reinhardtii , NPQ is activated as a photoprotective mechanism through wavelength-specific light signaling pathways mediated by the phototropin (blue Oct 1, 2018 · Tolerance to Pq-induced oxidative stress is related to the redox state of quinone A (QA), and the energy allocation of absorbed light in photosystem II (PSII) suggests the existence of a differential photoprotective regulatory mechanism in the two leaf types to the time-course Pq exposure accompanied by differential antioxidant protection Dec 1, 2007 · A Mechanism of photoprotective energy dissipation in higher plants. Under such circumstances, the limiting of the light absorption by the photosynthetic apparatus efficiently augments the Jan 1, 2014 · Download book PDF. e The marine diatom Thalassiosira pseudonana dissipates excess light energy for photoprotection via two types of mechanisms supported by different Lhc isofoms, suggesting that TpLhcx6_1 functions in photoprotection through non-photochemical energy dissipation in the different way from qE. A flavodiiron protein operon encodes for an alternative electron transfer mechanism at the PSII acceptor side and is dependent on functional phycobilisomes Aug 28, 2020 · In summary, the photoprotective mechanism for MAAs determined so far, taking palythine and porphyra-334 as examples, are very similar to the photoprotective mechanism identified for the basic core components of MAAs . However, in natural environmental conditions, they are likely mechanisms, and the promotion of other cytotoxic responses. leucotomos involving interaction with reactive oxygen species or free radicals appears to have potential clinical usefulness in preventing sunburn and inhibiting Aug 28, 2020 · The relaxation mechanism of a molecule after it has been photoexcited can be unravelled by several techniques, the ones of most interest for this review being ultrafast spectroscopy and Mar 1, 2020 · Chlorophyll synthesis and the photoprotective mechanism in leaves of mulberry (Morus alba L. However, more research is needed. , 2016). 1038/nature06262 Corpus ID: 4344656; Identification of a mechanism of photoprotective energy dissipation in higher plants @article{Ruban2007IdentificationOA, title={Identification of a mechanism of photoprotective energy dissipation in higher plants}, author={Alexander V. Following photo- damage to OEC, the potential for damage to the PSII reac- tion center upon light absorbed by photosynthetic pigments will increase owing to a lack of electron donation from the OEC to oxidized PSII reaction centers [11,17]; however, this might be alleviated if an alternative electron donor, such as lumenal ascorbate, is available [21,22]. Dec 20, 2023 · Current Insights on the Photoprotective Mechanism of the Macular Carotenoids, Lutein and Zeaxanthin: Safety, Efficacy and Bio-Delivery Pawan Kumara* , Samudra P. Download Free PDF. In low light, they ensure photosynthetic efficiency by maximizing the light absorption cross-section and subsequent energy storage. Aug 26, 2024 · Plants have evolved various photosynthetic adaptations and photoprotective mechanisms to survive in fluctuating and extreme light environments. Cells of control (LHCSR1–Luc717), uvr8-mutant, and complemented (uvr8/UVR8–FLAG) strains were treated with low-level UV-supplemented fluorescent light (10 μmol photons/m 2 /s) for 1 h to induce photoprotective mechanisms and compared with control samples maintained under LL (∼30 μmol photons Dec 17, 2021 · Metamitron, a Photosynthetic Electron Transport Chain Inhibitor, Modulates the Photoprotective Mechanism of Apple Trees. , 2004; Bai et al. The role of functional Jun 1, 1999 · Photoprotective processes prevent or minimize generation of oxidizing molecules, scavenge reactive oxygen species efficiently, and repair damage that inevitably occurs. Jan 8, 2022 · Our data highlight the presence of an adaptive framework connecting phototaxis with general photoprotective mechanisms via the use of overlapping signaling components already at the level of the Although many reports have suggested that photorespiration plays a photoprotective function under drought stress in plants (Guan et al. • The protection mechanism decreased the electron transport rate. leucotomos extract induces an effect on the overall reduction of angiogenesis, photo-carcinogenesis, and solar elastosis, while on the cellular level there are improvements in cell membrane integrity and elastin expression. Various plant extracts appear to have antioxidant activity and photoprotective effect. Jun 1, 2006 · We examined the adjustment of leaf angle (L theta) and foliar chlorophyll and xanthophyll chemistry in Eucalyptus nitens (Deane and Maiden) Maiden seedlings maintained in various nitrogen (N)-supply treatments over a 6-month period. Photoprotective Mechanism Under Dynamic Light INTRODUCTION Light is the source of energy for photosynthesis and influences the growth and development of plants (Chen et al. In this Minireview, various photoprotective quenching mechanisms that have been identi-fied in different photosynthetic organisms are surveyed and summarized, and implications for improving photosynthetic productivity are briefly discussed. The overall concept of photoprotective quenching is illustrated in Fig. 2005). This process effectively dissipates excess energy as heat, preventing the formation of reactive oxygen species (ROS). Plants and other oxygenic phototrophs have developed a suite of photoprotective mechanisms to prevent photoinhibition and oxidative stress caused by excess or fluctuating light conditions. Sep 20, 2014 · Mechanisms that control the light harvesting process in the photosynthetic antenna of higher plants, via protective energy dissipation, are compared and discussed. Photosynthesis needs light energy, but that exceeding the maximal capacity of photosynthesis enhances Dec 23, 2013 · The fact that the Flv2/Flv4-mediated electron transfer mechanism is part of the photochemical processes, whereas OCP-mediated fluorescence quenching represents the nonphotochemical processes, puts these photoprotective mechanisms theoretically in competition for energy dissipation. Changes The heart of the photoprotective mechanism lies in the molecular response to a transmembrane pH gradient (ΔpH). However, light intensity is highly dynamic on both temporal and spatial scales (Rascher and Nedbal, 2006;Hallik et al. Vascular plants lacking PSBS are deficient in NPQ activation under HL conditions (Li et al. Ruban and Rudi Berera and Cristian Ilioaia and Ivo H. The photoprotective mechanism in the filamentous strains that belong to Oscillatoriales, widely distributed in natural environments, is still unclear. Shuang et al. Diatoms have developed some rapidly-regulated photoprotective mechanisms, such as the xanthophyll cycle Analysis of possible photoprotective mechanisms revealed that high carotenoid content and up-regulation of the photoprotective flavodiiron operon flv4-sll0218-flv2 protected PSII in ÁsigCDE, while up-regulation of pgr5-like, hlipB or isiA genes in the mutant strain did not offer particular protection against photoinhibition. thaliana leaf tolerance to Pq-induced oxidative stress. Jan 1, 2014 · Assessing leaf photoprotective mechanisms using terrestrial LiDAR: Towards mapping canopy photosynthetic performance in three dimensions January 2014 New Phytologist 201:344-356 May 1, 2023 · When photoautotrophic organisms sense excess light, they induce the mechanisms to avoid photodamage by triggering the expression of photoprotective genes (Lautenschlager et al. The protein PsbS was identified as gene product required for NPQ Jan 1, 2017 · The photoprotective mechanism of P. In this study, we performed transcriptome sequencing and measured photosynthetic performance indicators to compare Feb 23, 2024 · The photoprotective properties of the xanthophylls are executed through several mechanisms. Histologically, the impact of P. In particular, we have demonstrated that blue structural coloration attenuates the more energetic light while simul-taneously favouring green and red light harvesting through the external antennae (phycobilisomes) which possess an intensity-dependent photopro-tection mechanism. Ohiac, Hiroyoshi Moriyamad, Sanjoy Chakrabortye, Chin-Kun Wangf, Yong Sang Songg, Apurva Goelh, Manashi Bagchii, and Debasis Bagchic,j Nov 22, 2007 · DOI: 10. Therefore, light-harvesting complexes (Lhc) in phototrophs harbor various proteins and pigments to function in both light capture and energy dissipation. Special Focus Issue – Regular Paper Elucidation of Photoprotective Mechanisms of PSI Against Fluctuating Light photoinhibition M. 1 The Major Photoprotective Strategies in Higher Plants The photoxidative events described above inevitably lead to chloroplast damage and decrease the overall rate of photosynthesis if the repair rate is overcome. e. Diatom Lhcx proteins are reported to be a critical component Jun 7, 2010 · The discovery of FRP and its characterization are essential elements in the understanding of the OCP-related photoprotective mechanism in cyanobacteria. This review summarizes several photoprotective mechanisms operating within chloroplasts of plants and green algae. Cabernet Sauvignon, Rizamat, Red Double Taste, and 1103Paulsen were treated by three severity orders of drought stress and photorespiration effectively protects the photosynthetic apparatus from photo-damage under drought, assists in maintaining a relatively high ΦPS2, and helps PN to be rapidly recovered after re-watering. Under unfavorable environmental conditions and in situations when the regulation of photosynthesis is Feb 1, 2007 · Request PDF | Plasticity of Photoprotective Mechanisms of Buxus sempervirens L. Ruban2 1 Laboratory of Ecology and Evolution of Plankton, Stazione Zoologica Anton Dohrn, Villa Comunale, Napoli, Italy, 2 School of Biological and Chemical Sciences, Queen Mary University Photoprotection is the biochemical process that helps organisms cope with molecular damage caused by sunlight. Jan 1, 2011 · Inhibition of PSII repair is primarily alleviated by the consumption and dissipation of excess light energy absorbed by photosynthetic pigments through photoprotective mechanisms, such as ROS scavenging 8, 12, qE (and CEF that activates qE) [70] and the photorespiratory pathway [102]. (ii) The recent study by Smith et al. M. The protein PsbS was identified as gene product required for NPQ activation in Jul 24, 2023 · This work highlights the diversity of photoprotective mechanisms present in algal systems, indicating that NPQ is not necessarily required for effective photoprotection in some algae, and suggests Apr 21, 2020 · Phenotypes of Col-0 and mutant plants lacking short-term photoprotective mechanism, such as the npq4-1 mutant lacking the PSBS subunit responsible of NPQ, the pgrl1ab and pgr5 mutants devoid of Jul 10, 2021 · PDF | Excess light can induce photodamage to the photosynthetic machinery, therefore plants have evolved photoprotective mechanisms such as | Find, read and cite all the research you need on High anthocyanin accumulation in poinsettia leaves is accompanied by thylakoid membrane unstacking, acting as a photoprotective mechanism, to prevent ROS formation (PDF) High anthocyanin accumulation in poinsettia leaves is accompanied by thylakoid membrane unstacking, acting as a photoprotective mechanism, to prevent ROS formation | Michael Mar 1, 2004 · Four grapevine cultivars, i. Leaves in Response to Extreme Temperatures | Summer 2003 was unusually hot in Western Europe, with local droughts May 1, 2011 · We have reviewed the current state of multidisciplinary knowledge of the photoprotective mechanism in the photosystem II antenna underlying non-photochemical chlorophyll fluorescence quenching (NPQ). Under excessive amounts of light, plants use non-photochemical quenching (NPQ) mechanisms to dissipate excess Aug 1, 2018 · FA exhibits marked antioxidant activity based on four structural features: (i) the hydroxyl group, electron donor, attached to the benzene ring, responsible for neutralizing the reactive oxygen species; (ii) the side vinyl chain, which connects the carboxyl group to benzene ring and increases the stability of the molecule; (iii) the methoxyl substituent capable of forming a hydrogen bond with Aug 1, 2018 · FA exhibits marked antioxidant activity based on four structural features: (i) the hydroxyl group, electron donor, attached to the benzene ring, responsible for neutralizing the reactive oxygen species; (ii) the side vinyl chain, which connects the carboxyl group to benzene ring and increases the stability of the molecule; (iii) the methoxyl substituent capable of forming a hydrogen bond with Mar 1, 2021 · Increased photosystem II translation efficiency as an important photoprotective mechanism in an Arabidopsis thaliana ecotype (Tibet-0) adapted to high light environments Author links open overlay panel Man Zhang a , Jing Zhao c , Wanying Li b , Shuqi Wen b , Huiling Huang a , Jie Dong a , Bing Liu a , Gong Zhang c , Hong-Bin Wang a b , Yanting Feb 2, 2018 · Request PDF | High anthocyanin accumulation in poinsettia leaves is accompanied by thylakoid membrane unstacking, acting as a photoprotective mechanism, to prevent ROS formation | In poinsettia May 1, 2014 · PDF | The response of photosystem II (PSII), of the non-target organism Arabidopsis thaliana, to paraquat (Pq) exposure was studied by chlorophyll | Find, read and cite all the research you Dec 1, 2009 · Photoprotective mechanisms during leaf ontogeny: Cuticular development and anthocyanin deposition in two morphs of Agave striata that differ in leaf coloration December 2009 Botany BOTANY(87):1186 Mar 1, 2024 · NPQ is an important photoprotective mechanism that converts excess light energy into heat to prevent photoinhibition in photosynthesis (Ruban and Murchie, 2012, Ruban, 2016). The molecular mechanisms underlying pigment formation and photosynthetic performance in Torreya leaf color mutants remain to be fully elucidated. Apr 19, 2024 · Photosynthesis needs light energy, but that exceeding the maximal capacity of photosynthesis enhances formation of reactive oxygen species, which potentially causes photodamages. 1. Download full-text PDF. Under excess light conditions, LHCs perform photoprotective quenching functions to prevent harmful chemical species such as triplet chlorophyll and Apr 1, 2015 · As qI provides no photoprotective benefit to active PSII cores [49], is not rapidly reversible, and requires protein synthesis for PSII repair, it will not be considered within the context of the post-translational photoprotective quenching mechanisms discussed in the current communication. Light damages PSII primarily through excitation of the manganese cluster in OEC. Photoprotection refers to a set of measures aimed to reduce exposure to the sun and to prevent the development of actinic damage. May 1, 2014 · Since herbicides with low or no toxicity effects except for the target weeds seem to be the demand of agriculture, we examined the photoprotective mechanism of the non-target organism A. van Stokkum b , Rob B. thaliana to Pq exposure would be a result of reduced ETR, due to increased This photoprotection in the form of screening appears to be especially important for juvenile and senescing plants as well as under environmental stresses—i. They had observed that the stabilization of the ROS and resonating permission are the mechanisms behind this photoprotective activity of the gel extract (Alencar Filho Nov 2, 2024 · The findings elucidate the redox-regulation mechanism of qH involving SOQ1-mediated methionine reduction of LCNP, providing insights into the intricate control of photoprotective processes in chloroplasts and enhancing the understanding of plant resilience under environmental stress. Based on the energetic premise that photorespiration consumes more ATP Apr 17, 2018 · Request PDF | Molecular mechanisms involved in plant photoprotection | Photosynthesis uses sunlight to convert water and carbon dioxide into biomass and oxygen. Plastid Biology. [5] aimed to reassess the previously discussed photoprotective role of photorespiration. , 2011;Liu and Last, 2017). Feb 24, 2022 · PDF | On Feb 24, 2022, Yixin Shi and others published Photoprotective Mechanism of Fucoxanthin in Ultraviolet B Irradiation-Induced Retinal Müller Cells Based on Lipidomics Analysis | Find, read Screening of visible and UV radiation as a photoprotective mechanism in plants . Download book EPUB. Dec 20, 2023 · Lutein and Zeaxanthin are oxygenated carotenoids with proven roles in augmentation of ocular health largely by virtue of their antioxidant properties and protective effects against photobleaching of retinal pigments, age-linked macular degeneration, cataract, and retinitis pigmentosa. May 14, 2024 · Two recent studies reinvestigated the phenomenon of photorespiration as a photoprotective mechanism. Stokkum and John T. Flavonoids have shown significant absorption in ultraviolet A (UVA), ultraviolet B (UVB) region, due to their chemical structure with conjugated double bonds, and may be used as ingredients in cosmetics formulations for skin protection. M. suggest alleviated negative feedback regulation of chloroplast ATP synthase as an alternative hypothesis. Many light-activated photosynthetic proteins and enzymes adjust to plant leaf anatomy and leaf pigments to facilitate these processes. photoprotective mechanisms are induced to pro-tect the photosynthetic antenna complexes from overexcitation (2). Apr 1, 2022 · However, it is still unknown whether there are differences in photoprotective mechanisms among different light-demanding plants in response to dynamic light, and thus the role of non-photochemical Feb 14, 2015 · The overlap of xanthophyll pigments-related photoprotective NPQ with several other mechanisms involved in the cell response (Photosystem II photoinactivation, changes in pigments composition, and Apr 2, 2024 · Photoprotective Mechanism in Plants | Biochemical & Morphological - Download as a PDF or view online for free Jul 25, 2017 · Some studies have shown also that the combination of vitamins C and E orally has more photoprotective effect, compared to monotherapy (Eberlein-Konig and Ring 2005; Placzek et al. During evolution plants have developed a network of adaptation mechanisms to cope with damaging excess light (EL) exposure. December 2007; Nature 450(7169):575-8; Download full-text PDF Read full-text. • This photoprotective mechanism was efficient since it kept reaction centers open. Jan 8, 2020 · Request PDF | Chlorophyll synthesis and the photoprotective mechanism in leaves of mulberry (Morus alba L. , 2007, Murchie and Niyogi, 2011, Pinnola and Bassi, 2018; Bassi, 2018). This photoprotective mechanism occurs through the main geometric deformation of an out-of-plane distortion of the substituents Apr 23, 2020 · Fungal endophytes enhance the photoprotective mechanisms and photochemical efficiency in the antarctic plant Colobanthus quitensis exposed to UV-B radiation April 2020 Frontiers in Ecology and Jan 13, 2021 · Photoprotective response of UV-treated cells. When in excess, light can be Jan 3, 2018 · PDF | Light-harvesting complexes (LHCs) serve a dual role in photosynthesis, depending on the prevailing light conditions. Terashima | Protection mechanisms against PSI photoinhibition Results 1406 Fig. • Arabidopsis is protected from paraquat by increasing the non-photochemical quenching. Excess excitation energy in the photosystem II (PSII) antenna complex can be harmlessly dissipated as heat, which is observable as a process named nonphotochemical quenching of chlorophyll fluorescence (NPQ) (3). Ruban AV et al (2007) Identification of a mechanism of photoprotective energy dissipation in higher plants Spectral Radiation Dependent Photoprotective Mechanism in the Diatom Pseudo-nitzschia multistriata Christophe Brunet1*, Raghu Chandrasekaran1, Lucia Barra1, Vasco Giovagnetti1, Federico Corato1, Alexander V. Lijin Tian a , Ivo H. 1 Effects of a deficiency of the PGR5-mediated and/or NDHmediated CEF-PSI on photoinhibition in FL-1200/30 for 162 min in Apr 5, 2022 · However, it is still unknown whether there are differences in photoprotective mechanisms among different light-demanding plants in response to dynamic light, and thus the role of non-photochemical quenching (NPQ), electron transport, and light energy allocation of photosystems in photoprotection needs to be further understood in different light May 1, 2014 · We propose the photoprotective mechanism of Arabidopsis thaliana to paraquat. thaliana to Pq exposure. Apr 1, 2022 · However, it is still unknown whether there are differences in photoprotective mechanisms among different light-demanding plants in response to dynamic light, and thus the role of non-photochemical Analysis of possible photoprotective mechanisms revealed that high carotenoid content and up-regulation of the photoprotective flavodiiron operon flv4-sll0218-flv2 protected PSII in ÁsigCDE, while up-regulation of pgr5-like, hlipB or isiA genes in the mutant strain did not offer particular protection against photoinhibition. In this study, we decided to characterize OCP and its related photoprotective mechanism in non-stressed and light-stressed cells of three different Planktothrix strains. , 2000). Oct 31, 2008 · Prolonged exposure of plants to high fluxes of solar radiation as well as to other environmental stressors disturbs the balance between absorbed light energy and capacity of its photochemical utilization resulting in photoinhibition of and eventually in damage to plants. We hypothesized that the photoprotective mechanism of A. tiyqebip mpiiw zcwsy gmtja pofqbn zlnna aaulal ocwrzl ocspp cyvvvq