Modification of non-stomatal limitation and photoprotection due to K and Na nutrition of olive trees

Erel, Ran; Yermiyahu, Uri; Ben‐Gal, Alon; Dag, Arnon; Shapira, Or; Schwartz, Amnon

doi:10.1016/j.jplph.2015.01.005

Cited by 75 publications

(48 citation statements)

References 49 publications

(94 reference statements)

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“…Likewise, K deficiency reduces Rubisco carboxylation activity in chloroplasts. This was shown by in‐vitro measurements (Weng et al , Hu et al , Zahoor et al ) as well as by estimations of the maximum Rubisco carboxylation velocity, V c,max , from combined measurements of leaf gas exchange and chlorophyll fluorescence (Jin et al , Battie‐Laclau et al , Erel et al , Jákli et al ). It is sometimes stated that K deficiency inhibits the activation of Rubisco (Oosterhuis et al ), resulting in reduced rates of RuBP carboxylation.…”

Section: K and Mg Involvement In Photosynthesismentioning

confidence: 84%

“…Additionally, Jin et al (), Battie‐Laclau et al () and Erel et al () report reduced maximum electron transport rates (J max ) through PSs of K‐deficient hickory, eucalyptus and olive leaves, respectively. J max is associated with the ATP‐ and NADPH‐consuming RuBP regeneration (Farquhar et al ), implying less acceptor molecules for CO 2 fixation.…”

Section: K and Mg Involvement In Photosynthesismentioning

confidence: 99%

“…Changes in F v /F m under Mg‐deficiency were related to damage of the oxygen‐evolving complex on PSII or to an accumulation of reduced Q A (Yang et al ). K deficiency induced a decrease of F v /F m in two cotton cultivars (Wang et al ), in rice (Jia et al ), olive (Erel et al ) and in maize (Qu et al ), whereas in Norway spruce and sunflower a decrease in F v /F m was not observed (Barnes et al , Jákli et al ). Two soybean cultivars being tolerant and sensitive to K deficiency, respectively, responded differently to K deficiency: the tolerant cultivar did not show altered F v /F m values, whereas the sensitive cultivar showed a significant decrease of F v /F m (Wang et al ).…”

Section: K and Mg Involvement In Photoprotectionmentioning

confidence: 99%

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Functioning of potassium and magnesium in photosynthesis, photosynthate translocation and photoprotection

Tränkner

Tavakol

Jákli

2018

Physiologia Plantarum

367

193

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Potassium (K) and magnesium (Mg) are mineral nutrients that are required in large quantities by plants. Both elements critically contribute to the process of photosynthesis and the subsequent long-distance transport of photoassimilates. If K or Mg is not present in sufficient quantities in photosynthetic tissues, complex interactions of anatomical, physiological and biochemical responses result in a reduction of photosynthetic carbon assimilation. As a consequence, excessive production of reactive oxygen species causes photo-oxidation of the photosynthetic apparatus and causes an up-regulation of photoprotective mechanisms. In this article, we review the functioning of K and Mg in processes directly or indirectly associated with photosynthesis. Focus is given to chloroplast ultrastructure, light-dependent and -independent reactions of photosynthesis and the diffusion of CO - a major substrate for photosynthesis - into chloroplasts. We further emphasize their contribution to phloem-loading and long-distance transport of photoassimilates and to the photoprotection of the photosynthetic apparatus.

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Section: K and Mg Involvement In Photosynthesismentioning

confidence: 84%

Section: K and Mg Involvement In Photosynthesismentioning

confidence: 99%

Section: K and Mg Involvement In Photoprotectionmentioning

confidence: 99%

See 1 more Smart Citation

Functioning of potassium and magnesium in photosynthesis, photosynthate translocation and photoprotection

Tränkner

Tavakol

Jákli

2018

Physiologia Plantarum

367

193

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“…The conclusions of the study about the specific effects of K + and Na + may be true, but such conclusions cannot be derived from the experiment. Unfortunately, unlike this study, many studies provide insufficient or unclear information needed to deconstruct the treatments into their ion compositions [15, 16]. Designing an experiment to determine the effects of K + and Na + requires varying only K + and Na + and holding constant all other ion levels.…”

Section: Introductionmentioning

confidence: 99%

ARS-Media for Excel: A Spreadsheet Tool for Calculating Media Recipes Based on Ion-Specific Constraints

Niedz

2016

PLoS ONE

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ARS-Media for Excel is an ion solution calculator that uses “Microsoft Excel” to generate recipes of salts for complex ion mixtures specified by the user. Generating salt combinations (recipes) that result in pre-specified target ion values is a linear programming problem. Excel’s Solver add-on solves the linear programming equation to generate a recipe. Calculating a mixture of salts to generate exact solutions of complex ionic mixtures is required for at least 2 types of problems– 1) formulating relevant ecological/biological ionic solutions such as those from a specific lake, soil, cell, tissue, or organ and, 2) designing ion confounding-free experiments to determine ion-specific effects where ions are treated as statistical factors. Using ARS-Media for Excel to solve these two problems is illustrated by 1) exactly reconstructing a soil solution representative of a loamy agricultural soil and, 2) constructing an ion-based experiment to determine the effects of substituting Na+ for K+ on the growth of a Valencia sweet orange nonembryogenic cell line.

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“…Water-soluble ions in air particles will be dissolved in water concentrated from the air by stomata or water-absorbing scales, and thus move into foliar structures, especially tender stems. Potassium is an essential macronutrient which plays an important role in photosynthetic processes; furthermore, sodium can partially substitute for potassium in some plants (Erel et al, 2015).To investigate the effects of macronutrients on plant photosynthesis, we measured the concentration of some macronutrients in air particles using ion chromatography and the photosynthesis-light response, such as concentrations of K + , Na…”

Section: Stomatal Limitation and Non-stomatal Limitationmentioning

confidence: 99%

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Supplemental Information 1: Photosynthetic Response Raw Data

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Floating dust weather is an annual natural phenomenon in early spring in south of Xinjiang UygurAutonomous Region, northwestern China. Floating dust in air can influence human health and plant growth. Populus euphratica is a rare tree species which can grow in hot and dry conditions. Some investigations have evaluated the effect of floating dust on plants by means of artificial dust to which simulates the natural sand and dust, but the mechanism by which plants respond to sand is poorly understood. The investigation presented in this paper focused on a comparison of the variation in net photosynthetic rate (P n ) before and during floating dust weather, to elucidate the mechanisms involved.Stomatal conductance (g s ) and P n appeared to increase during floating dust weather;in ,which is optimum for plant growth. Aerosol ions, including potassium, dissolved in water collected by foliar structures or tender stems, may come into contact with intercellular stroma and improve chloroplast activity or ribulose-1,5-bisphosphate carboxylase/ oxygenase (Rubisco) levels, such as potassium, thereby influencing L s and L ns . Moreover, potassium, phosphorus, nitrogen and sodium in aerosols appeared to increase P n , and this may be due to nutrient compounds in aerosols, which may have a similar effect to spraying fertilizer on leaves. In addition, the high relative humidity and carbon dioxide concentration in air during floating dust weather may facilitate an increase in P n . levels, such as potassium, thereby influencing Ls and Lns. Moreover, potassium, phosphorus, nitrogen and sodium in aerosols appeared to increase Pn, and this may be due to nutrient compounds in aerosols, which may have a similar effect to spraying fertilizer on leaves. In

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Modification of non-stomatal limitation and photoprotection due to K and Na nutrition of olive trees

Cited by 75 publications

References 49 publications

Functioning of potassium and magnesium in photosynthesis, photosynthate translocation and photoprotection

Functioning of potassium and magnesium in photosynthesis, photosynthate translocation and photoprotection

ARS-Media for Excel: A Spreadsheet Tool for Calculating Media Recipes Based on Ion-Specific Constraints

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