Evidence for PSII donor-side damage and photoinhibition induced by cadmium treatment on rice (Oryza sativa L.)

Pagliano, Cristina; Raviolo, Marco; Vecchia, Francesca Dalla; Gabbrielli, R.; Gonnelli, Cristina; Rascio, Nicoletta; Barbato, Roberto; Rocca, Nicoletta La

doi:10.1016/j.jphotobiol.2006.01.012

Cited by 132 publications

(69 citation statements)

References 40 publications

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“…Upon exposure to metal, F v /F m ratio was depressed in plants receiving nitrate and it was enhanced in tomato received ammonium. Cd brought about a decrease in the F v /F m ratio indicating a loss of efficiency of PSII that is generally related to photoinhibition (Pagliano et al, 2006). Another characteristic of plants receiving ammoniacal nutrition is their capacity to conserve their PSII efficiency when Cd is present.…”

Section: Discusionmentioning

confidence: 99%

“…Most studies have shown interference of Cd on PSII activity. Cd affects directly the structure, composition and functionality of PSII domains in the thylakoid membranes (Becerril et al, 1988;Maksymiec & Baszyriski, 1988), inactivated thylakoids (Pagliano et al, 2006) and inhibited CO 2 assimilation rate (Dicagno et al, 1999). Human intervention in the N cycle is presently adding more reduced N to the biosphere as the result of intensive agricultural activities.…”

Section: Introductionmentioning

confidence: 99%

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Cadmium stress effects on photosynthesis and PSII efficiency in tomato grown on NO₃⁻or NH₄⁺as nitrogen source

Nasraoui-Hajaji¹,

Gharbi²,

Ghorbel³

et al. 2010

Acta Botanica Gallica

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Abstract.-This work investigates the combined effects of N form and Cd treatment on photosynthesis of tomato (Solanum lycopersicum Mill. cv Ibiza F1). Our study shows that, compared to plants fed with NO 3 -, dry weight, fresh weight and leaf area decrease when plants received NH 4 + as N form. Regardless the N form used, Cd inhibits this parameters. In this report we show that, when grown in NH 4 + , Cd-stressed seedlings accumulate higher levels of chlorophyll. Under Cd stress, water content, transpiration rate (E), stomatal conductance (Gs) and photosynthetic activity (Amax) decreased in plants fed with NO 3 -and increased in NH 4 + grown-plants. The F v /F m ratio of dark adapted leaves was lower in NH 4 + -grown tomato compared to in NO 3 --grown seedlings. Upon exposure to metal, the F v /F m ratio and the fraction of open PSII reaction centers (qp) were depressed by Cd in NO 3 --grown plants and enhanced in NH 4 + -grown ones. NPQ stimulated by Cd in NO 3 --grown plants was inhibits in NH 4 + -grown ones.Key words.-tomato -cadmium -fluorescence -gas exchange -nitrate -ammonium.Résumé.-Ce travail examine les effets combinés de la forme d'azote et du traitement par le cadmium sur la photosynthèse de la tomate (Solanum lycopersicum Mill. cv Ibiza F1). Par comparaison aux plantes recevant NO 3 -, la matière sèche et fraîche ainsi que la surface foliaire diminuent chez les plantes cultivées en présence de NH 4 + . Quelle que soit la forme d'azote utilisée, Cd inhibe ces paramètres. Les plantes stressées par Cd et cultivées en présence de NH 4 + accumulent plus de chlorophylle. Sous stress cadmique, les teneurs en eau, la transpiration (E), la conductance stomatique (Gs) et l'activité photosynthétique (Amax) diminuent chez les plantes recevant NO 3 -et augmentent chez celles cultivées en présence de NH 4 + . L'efficience maximale des feuilles adaptées à l'obscurité (F v /F m ) est plus faible chez les plantes cultivées en milieu ammoniacal que chez celles cultivées en milieu nitrique. Suite à l'exposition au métal, F v /F m ainsi que la fraction de centres de réaction PSII ouverts (qp) diminuent chez les plantes recevant NO 3 -et augmentent chez celles recevant NH 4 + . Par contre, la désaltération non photochimique (NPQ) est stimulée par Cd chez les plantes recevant NO 3 -et inhibé chez celles issues du milieu ammoniacal.Mots clés.-tomate -cadmium -fluorescence -échanges gazeux -nitrateammonium.received October 7, 2008, accepted February 3, 2009 Published online 26 Apr 2013 Abreviations -N = nitrogen, Cd = cadmium, Amax = photosynthetic rate, E = transpiration rate, Gw = stomatal conductance, Ci = intercellular CO 2 concentration, F v /F m = maximum quantum efficiency of PSII photochemistry, qp = photochemical quenching, NPQ = nonphotochemical quenching, Ф PSII = PSII efficiency, Qexc = efficiency of excitation energy capture by open PSII reaction centres, QA = primary quinone electron acceptor of PSII, PSII = photosystem II

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Section: Discusionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cadmium stress effects on photosynthesis and PSII efficiency in tomato grown on NO₃⁻or NH₄⁺as nitrogen source

Nasraoui-Hajaji¹,

Gharbi²,

Ghorbel³

et al. 2010

Acta Botanica Gallica

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“…3a). PSII is the most susceptible photosynthetic organ including the acceptor and donor side (Pagliano et al, 2006;Deng et al, 2013), and inhibition of PSII has been attributed to the PsbA protein of PSII (D1 protein) loss and pigment degradation. On the thylakoid membrane, since the abundance and the stability of PSI are lesser and greater than those of PSII, respectively, so PSI is more strongly resistant to adversity (Jiang and Qiu, 2010).…”

Section: Effects Of Dcum and MV On Energy Conversion Of Psi And Psiimentioning

confidence: 99%

Response of linear and cyclic electron flux to moderate high temperature and high light stress in tomato

Shi

Sun

et al. 2017

J. Zhejiang Univ. Sci. B

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With prolonged DCMU treatment time, electron transport rate and quantum efficiency of PSI (ETR I and Y I ) significantly decreased whereas acceptor and donor side limitation of PSI (Y NA and Y ND ) increased. MV led to a significant decline and accession of yield of regulated and non-regulated energy Y NPQ and Y NO , respectively. Membrane integrity and ATPase activity were reduced by HH stress, and DCMU and MV enhanced inhibitory actions. Conclusions: The protective effects of CEF and LEF were mediated to a certain degree by meliorations in energy absorption and distribution as well as by maintenance of thylakoid membrane integrity and ATPase activity.

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“…Its adverse effects on plant growth, inhibition of oxidative mitochondrial phosphorylation, induction of oxidative stress and generation of lipid peroxidation have been reported (Shah et al 2001;Panda 2007). These effects include the inhibition of activities of several antioxidative enzymes (ferrous reductase affecting photosynthesis), damage to the photosynthesis apparatus, as well as chlorophyll metabolism in rice leaves (Pagliano et al 2006) and other effects, such as alteration of chromatin and the change of plasma membrane ATPase activity. In addition, Cd also affects the uptake, transport and use of essential elements in plants (Liu et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Overexpression of phytochelatin synthase (AtPCS) in rice for tolerance to cadmium stress

Venkataramaiah¹,

Ramakrishna²,

Sreevathsa³

2011

Biologia

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Phytoremediation is an important strategy adapted by plants to sequester and/or detoxify pollutants. Phytochelatins, a family of cysteine-rich thiol-reactive peptides, bind to various heavy metals and metalloids making them good candidates for phytoremediation. Phytochelatin synthase catalyses the final step in the biosynthesis of phytochelatins and can be used as a strategy to improve tolerance against heavy metals. In the present study, an AtPCS gene was overexpressed in rice following the in planta transformation approach. Stringent screening strategies were standardized to select putative transformants under a Cd stress of 125 µM at both seedling and plant levels. Molecular analysis by PCR in 18 tolerant plants confirmed the transgene integration and absence of Agrobacterium. Genomic Southern analysis further confirmed the integration of the T-DNA as a single copy. The stability of the T-DNA in the progeny of 5 selected T1 generation plants was confirmed by tolerance assay, molecular characterization and biochemical analysis for the reduced glutathione, phytochelatin content and lipid peroxidation. This strategy is discussed as a potential mechanism to enhance the tolerance of rice plants to Cd stress.

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Evidence for PSII donor-side damage and photoinhibition induced by cadmium treatment on rice (Oryza sativa L.)

Cited by 132 publications

References 40 publications

Cadmium stress effects on photosynthesis and PSII efficiency in tomato grown on NO₃⁻or NH₄⁺as nitrogen source

Cadmium stress effects on photosynthesis and PSII efficiency in tomato grown on NO₃⁻or NH₄⁺as nitrogen source

Response of linear and cyclic electron flux to moderate high temperature and high light stress in tomato

Overexpression of phytochelatin synthase (AtPCS) in rice for tolerance to cadmium stress

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Evidence for PSII donor-side damage and photoinhibition induced by cadmium treatment on rice (Oryza sativa L.)

Cited by 132 publications

References 40 publications

Cadmium stress effects on photosynthesis and PSII efficiency in tomato grown on NO3−or NH4+as nitrogen source

Cadmium stress effects on photosynthesis and PSII efficiency in tomato grown on NO3−or NH4+as nitrogen source

Response of linear and cyclic electron flux to moderate high temperature and high light stress in tomato

Overexpression of phytochelatin synthase (AtPCS) in rice for tolerance to cadmium stress

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Cadmium stress effects on photosynthesis and PSII efficiency in tomato grown on NO₃⁻or NH₄⁺as nitrogen source

Cadmium stress effects on photosynthesis and PSII efficiency in tomato grown on NO₃⁻or NH₄⁺as nitrogen source