Cadmium and lead effects on chlorophyll fluorescence, chlorophyll pigments and proline of Robinia pseudoacacia

Dezhban, A.; Shirvany, A.; Attarod, Pedram; Delshad, Mojtaba; Matinizadeh, Mohammad; Khoshnevis, Mostafa

doi:10.1007/s11676-015-0045-9

Cited by 42 publications

(19 citation statements)

References 32 publications

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“…Similarly, the carboxylation efficiency (A/Ci) decreased after 6 days of Cd stress in both genotypes, with decreases of 87% at 6, 34% at 11, and 35% at 16 days of Cd stress in H358 plants ( Figure 1G), and 79% at 6, 97% at 11, and 75% at 16 days of Cd stress in AG960 plants ( Figure 1H). Inhibition of photosynthetic rate due to Cd was observed in different plant species, such as Robinia pseudoacacia (DEZHBAN et al, 2015), Ricinus communis (LIU et al, 2011) and Triticum aestivum (MOUSSA; EL-GAMAL, 2010). In control conditions, the transpiration rates (E) of the evaluated genotypes followed the same trend of the gs.…”

Section: Resultsmentioning

confidence: 99%

Photosynthetic Parameters as Physiological Indicators of Tolerance to Cadmium Stress in Sunflower Genotypes

et al. 2018

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The objective of the present study was to evaluate the tolerance to cadmium (Cd) of sunflower genotypes grown in greenhouse conditions, and the effectiveness of using photosynthetic parameters as physiological indicators of this tolerance. Seeds of two sunflower genotypes previously identified as tolerant (H358) and Cd-sensitive (AG960) to Cd were used. The seeds were germinated in plastic cups containing plant substrate; after 9 days, the seedlings were transplanted to plastic basins containing a nutrient solution with 0 or 10 µM of Cd, where they remained for 16 days. Samples of the plants were harvested every 5 days. The experiment was carried out in a randomized complete design, using a 4×2×2 factorial arrangement (4 days of grown in a nutrient solution with Cd, 2 sunflower genotypes, and 2 Cd levels) with four replications. Cd stress decreased CO 2 net assimilation, stomatal conductance, carboxylation efficiency, photosynthetic pigment contents, potential quantum yield (F v /F m ) , and effective quantum yield of plants of the two evaluated genotypes. The decrease in photosynthetic rates of these plants was caused by both stomatal and non-stomatal limitations. Plants of the AG960 genotype showed more pronounced deleterious effects due to Cd stress than those of the H358 genotype. Thus, CO 2 net assimilation rate, stomatal conductance, and chloroplast pigment content are good physiological indicators of sunflower tolerance to Cd and can at least in part, explain the greater tolerance of the H358 genotype to Cd stress when compared to the AG960 genotype. EFICÁCIA DOS PARÂMETROS FOTOSSINTÉTICOS COMO INDICADORES FISIOLÓGICOS DA TOLERÂNCIA AO CÁDMIO EM GIRASSOLRESUMO -O presente estudo foi conduzido em casa de vegetação objetivando-se demonstrar a tolerância ao cádmio (Cd) em genótipos de girassol e avaliar a eficácia dos parâmetros fotossintéticos como indicadores fisiológicos dessa tolerância. Para isto, foram utilizadas sementes de dois genótipos de girassol previamente identificados como tolerante (H358) e sensível (AG960) ao Cd.As sementes foram germinadas em copos plásticos contendo substrato vegetal e, após 9 dias, as plântulas foram transferidas para bacias plásticas com solução nutritiva contendo 0 ou 10 µM de Cd , onde permaneceram por 16 dias. As plantas foram coletadas a cada 5 dias. O delineamento experimental foi o inteiramente casualizado, em um arranjo fatorial 4 (dias de exposição) × 2 (genótipos) × 2 (níveis de Cd), com quatro repetições. A exposição ao Cd reduziu a taxa de assimilação líquida do CO 2 , a condutância estomática e a eficiência de carboxilação, bem como os teores de todos os pigmentos fotossintéticos, a razão F v /F m e o Y II das plantas de ambos os genótipos estudados. Demonstrando que a redução na taxa fotossintética dessas plantas foi ocasionada tanto por limitações estomáticas como não-estomáticas. Os efeitos deletérios do Cd foram mais pronunciados no genótipo AG960 em comparação com o H358. Assim, as variáveis A, gs e os teores de pigmentos mostraram-se bons indicadores fis...

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Section: Resultsmentioning

confidence: 99%

Photosynthetic Parameters as Physiological Indicators of Tolerance to Cadmium Stress in Sunflower Genotypes

et al. 2018

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“…Our present results do not suggest clear reasons for such birch behaviour, so we can only assume that sensitivity of species to any element depends on concentration, exposure period, age and growth conditions. Although, many authors have shown that an increased content in polluting agent leads to chlorophyll inhibition 11,49-51 either through direct inhibition of several enzymatic steps or as a result of substitution of the central Mg ion, 52 several studies have shown that the exposure to heavy metals induces oxidative stress which is accompanied by an increase in the chlorophyll content. [52][53][54] For example, Kalaikandhan et al 55 examined the effects of different Zn concentrations on the photosynthetic pigment content in Sesuvium portulacastrum leaves during 120 days and established that an increase in Chl a accompanied the increase in the concentration of Zn in the substrate from 100 to 300 mg kg -1 , with which our results are in good agreement.…”

Section: Photosynthetic Pigmentsmentioning

confidence: 99%

“…Although, many authors have shown that an increased content in polluting agent leads to chlorophyll inhibition 11,49-51 either through direct inhibition of several enzymatic steps or as a result of substitution of the central Mg ion, 52 several studies have shown that the exposure to heavy metals induces oxidative stress which is accompanied by an increase in the chlorophyll content. [52][53][54] For example, Kalaikandhan et al 55 examined the effects of different Zn concentrations on the photosynthetic pigment content in Sesuvium portulacastrum leaves during 120 days and established that an increase in Chl a accompanied the increase in the concentration of Zn in the substrate from 100 to 300 mg kg -1 , with which our results are in good agreement. Likewise, Petrova 56 tested the pigment response to urban air pollution in birch leaves and found that the highest concentrations of chlorophyll were present in plants growing in environments with a medium level of urbanization and moderate exposure to road traffic pressure.…”

Section: Photosynthetic Pigmentsmentioning

confidence: 99%

“…The observations presented in this study are also consistent with the findings of Fargašova 49 who examined the aboveground parts of Sinapis alba L. seedlings, however, our results are not in agreement with the findings of Keser et al 54 in Lepidium sativum L. Different effects of pollution on Chl b in relation to Chl a have been reported in many studies. 52,54 However, the different responses of Chl a and Chl b are not unexpected, since different types of pollution exert different effects on the pigment content, hence the response of a plant can be attributed to the interaction between various types of pollutants as well as abiotic factors (high temperature, drought, intense insolation, etc. ).…”

Section: Photosynthetic Pigmentsmentioning

confidence: 99%

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Possibilities of assessing trace metal pollution using Betula pendula Roth. leaf and bark - experience in Serbia

Pavlović

Marković

et al. 2017

J Serb Chem Soc

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In this study, both seasonal and spatial variations in trace metal uptake, as well as concentration of photosynthetic pigments in Silver birch (Betula pendula Roth.) trees in five urban parks in Pančevo, Smederevo, Obrenovac and Belgrade (Serbia) affected by different anthropogenic activities were studied. The characteristics of soil were assessed in terms of texture, pH and trace element content. Concentrations of boron, strontium and zinc in both leaves and bark showed an increasing temporal trend, however, copper showed an opposite seasonal trend. A higher accumulation of trace elements was noticed in leaves compared to bark. The obtained results for photosynthetic pigments showed low sensitivity of birch to B, Cu, Sr and Zn contamination, indicating that birch tolerates pollution and climate stress by increasing the amount of pigments. Analysis of the effects on soil chemistry of trace element accumulation in plant tissues proved that soil chemistry poorly explains the variability of elements in bark (27.6 %) compared to leaves (82.99 %). Discriminant analysis showed that Belgrade and Smederevo are clearly separated from the other three sites.

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“…For example, they indirectly decrease net photosynthesis and transpiration in plants by causing a disturbance in the stomatal structure [42]. HMs directly disturb the structure of thylakoid membranes at chloroplast and photosynthetic proteins, which mainly damage the efficiency photochemistry parameters in the dark-adapted state (fv/fn) and PSII [43], and reduce energy transfers to the reaction centre [44].…”

Section: Gas Exchange Parameters (Photosynthesis Indices)mentioning

confidence: 99%

HMs Induced Changes on Growth, Antioxidant Enzyme’s Activity, gas Exchange Parameters and Protein Structures in Sasa Kongosanensis f. Aureo – Striatus

Emamverdian¹,

Ding²

2017

Pol. J. Environ. Stud.

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Nowadays, the contaminations generated by anthropogenic activities have had damaging effects on the life cycle of plants, particularly on the plants living in the vicinity of urban areas that are more associated with the life of people. Bamboo, as a local plant, is one of the most widely used plants in China. So, a pot experiment was conducted to investigate the effects of three HMs (Cu, Pb, and Zn) in four different concentrations (0 (for control), 500 mg/kg, 1000 mg/kg, and 200 mg/kg), with complete randomized design (CRD) by five replications for each treatment to measure the antioxidant enzymes, lipid per oxidation (LP), soluble protein (SP), gas exchange parameters, and morphological indexes in Sasa kongosanensis f. aureostriatus. The results indicated that the antioxidant responses had an arc-shaped trend with various alterations in which POD and CAT first increase with low concentration of HMs (500 mg/kg) and then decrease with the increase of heavy metal (1000 mg/kg and 2000 mg/kg). Additionally, measuring of MDA content and soluble protein illustrated that MDA content and soluble protein increase with excess of HMs in different levels, and also the excess of HMs significantly decreases the photosynthesis properties. Moreover, the results obtained by morphological indices showed that low concentration of HMs increases both percentage of shoot length and percentage of emerge plants at all three kinds of HMs, but observe a downward trend with excess of heavy metal in 1000 mg/kg and 2000 mg/kg. Overall, in "Sasa kongosanensis f. aureo -striatus, results indicated that low concentration of HMs (500 mg/kg) can help the plant growth, while excess of HMs (1000-2000 mg/kg) alleviates the plant growth. On the other hand, Pb revealed the lowest antioxidant

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Cadmium and lead effects on chlorophyll fluorescence, chlorophyll pigments and proline of Robinia pseudoacacia

Cited by 42 publications

References 32 publications

Photosynthetic Parameters as Physiological Indicators of Tolerance to Cadmium Stress in Sunflower Genotypes

Photosynthetic Parameters as Physiological Indicators of Tolerance to Cadmium Stress in Sunflower Genotypes

Possibilities of assessing trace metal pollution using Betula pendula Roth. leaf and bark - experience in Serbia

HMs Induced Changes on Growth, Antioxidant Enzyme’s Activity, gas Exchange Parameters and Protein Structures in Sasa Kongosanensis f. Aureo – Striatus

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