Effect of 24-Epibrassinolide on Chlorophyll Fluorescence and Photosynthetic CO2 Assimilation in Vicia faba Plants Treated with the Photosynthesis-Inhibiting Herbicide Terbutryn

Piñol, Rafael; Simón, Esther

doi:10.1007/s00344-008-9077-0

Cited by 46 publications

(17 citation statements)

References 40 publications

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“…The response curves (PN-PAR) of the net photosynthetic rate to light intensity were simulated and the P Nmax and light saturation point (LSP) were calculated according to the trends of the curves (Lang et al 2011). Linear regression analyses were used to calculate the low intercellular PAR range (PAR ≤ 200 μmol m -2 s -1 ) of the P N -PAR response curves according to the report by Piñol and Simón (2009). The light compensation point (LCP), respiration rate (R D ), and apparent quantum yield (AQY) were calculated directly from the linear regression equation (Piñol and Simón 2009).…”

Section: Data Processingmentioning

confidence: 99%

“…Linear regression analyses were used to calculate the low intercellular PAR range (PAR ≤ 200 μmol m -2 s -1 ) of the P N -PAR response curves according to the report by Piñol and Simón (2009). The light compensation point (LCP), respiration rate (R D ), and apparent quantum yield (AQY) were calculated directly from the linear regression equation (Piñol and Simón 2009). The response characteristics of photosynthetic parameters of S. babylonica to different phenol concentrations were based on the leaf gas-exchange data obtained under the fixed light intensity at different concentrations of phenol solutions.…”

Section: Data Processingmentioning

confidence: 99%

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The effects of the phenol concentrations on photosynthetic parameters of Salix babylonica L.

Li¹,

Zhang²,

Xie³

et al. 2015

Photosynt.

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As a common waterfront and wet environment tree species, Salix babylonica shows a great potential for restoration of contaminated water or soil environments, such as phenol-polluted water. However, studies on such remediation effects have not been carried out yet. The objective of this study was to investigate the effects of phenols on photosynthesis of S. babylonica. Photosynthetic and chlorophyll fluorescence parameters of S. babylonica cuttings were determined in hydroponic experiment, where six phenol concentrations was used (0, 50, 100, 200, 400, and 800 mg L -1 ). Phenol presence inhibited photosynthesis of S. babylonica significantly, as the net photosynthetic rate (P N ), light-saturated net photosynthetic rate, apparent quantum yield, maximal quantum yield of PSII photochemistry, and effective quantum yield of PSII photochemistry declined significantly. The higher the concentration of phenol solution, the greater inhibition of photosynthesis occurred. Our data indicated that nonstomatal limitation was responsible for the reduction of P N . S. babylonica should be used to remediate phenol-contaminated water, when the concentration of phenol solution is lower than 200 mg L -1 . Otherwise, the efficiency of photosynthesis of S. babylonica would decrease markedly. However, further study is needed to determine the maximum concentration of phenol that S. babylonica can tolerate to maintain normal photosynthetic activity.

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Section: Data Processingmentioning

confidence: 99%

Section: Data Processingmentioning

confidence: 99%

The effects of the phenol concentrations on photosynthetic parameters of Salix babylonica L.

Li¹,

Zhang²,

Xie³

et al. 2015

Photosynt.

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“…The chlorophyll (Chl) content was increased in the leaves of Vigna radiata (Bhatia and Kaur 1997) and in Brassica juncea (Hayat et al 2001a) due to 28-homobrassinolide (HBL) and in Cucumis sativus (Yu et al 2004) and Vicia faba (Pinol and Simon 2009) due to EBL, when the hormones were applied directly to the foliage. Similarly, the values for the above parameters increased in the leaves of rice (Wang 1997), Cicer arietinum , Brassica juncea .…”

Section: Introductionmentioning

confidence: 98%

Comparative effect of 28-homobrassinolide and 24-epibrassinolide on the growth, carbonic anhydrase activity and photosynthetic efficiency of Lycopersicon esculentum

Hayat¹,

Yadav²,

Wani³

et al. 2011

Photosynt.

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The present piece of work highlights the comparative effects of two active forms of brassinosteroids (BRs), 28-homobrassinolide (HBL) and 24-epibrassinolide (EBL), on growth parameters, carbonic anhydrase activity and photosynthetic parameters in Lycopersicon esculentum (cv. K-21) sampled at 45 (24 h after spray) and 60 days after sowing, under natural conditions. Out of the two active forms of BR, EBL proved better than HBL in improving the above parameters, when applied as foliar spray. Of the three concentrations (10 -6 M, 10 -8 M or 10 -10 M) of HBL and EBL, 10 -8 M proved best in both cases.Additional key words: brassinosteroids; carbonic anhydrase; chlorophyll; net photosynthetic rate.

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“…There are few studies that demonstrate that brassinosteroids function to protect metabolism against effects of herbicides. Study of Pinol and Simon [31] has shown protective action of brassinosteroids against photosynthesis-inhibiting herbicides. The study has shown that epibrassinolide at 2 x 10 -6 or 2 x 10 -5 mM induced the recovery from damage caused by 1.96 kg ha -1 terbutryn in Vicia faba plants, as detected by chlorophyll fluorescence and photosynthetic CO 2 assimilation.…”

Section: Newly Added Plant Hormonesmentioning

confidence: 99%

“…The herbicides that inhibit glutamine synthase, protoporphyrinogen oxidase and carotenoid biosynthesis affect chlorophyll fluorescence [30], and even lipid synthesis inhibitor herbicides induce chlorophyll fluorescence. Application of 1.96 kg ha -1 Terbutryn to Vicia faba plants strongly decreased F v /F m ratio and CO 2 assimilation capacity [31]. Recently, Sousa et al [32] have shown that application of imidazolinone group of herbicides to Oryza sativa changed the photosynthetic metabolism of plants and chlorophyll a fluorescence.…”

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confidence: 99%

Contribution of Plant Growth Regulators in Mitigation of Herbicidal Stress

Varshney¹,

Khan²

2015

Zhu et al., J Plant Biochem Physiol

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Weeds contribute to severe loss of agricultural crop productivity. Herbicides are efficient, cheap and effective method for their control, but their multiple uses at higher concentration have resulted in induced toxicity and stress in non-target crops. The herbicideinduced toxicity affects growth, photosynthesis, physiological and biochemical characteristics of plants directly impacting yield of plants. It is therefore, necessary to find ways to mitigate the herbicidal effects by increasing the tolerance of crops to their application. Plant growth regulators are known to promote growth and development of plants under optimal and stressful environment. They induce various physiological and biochemical responses and also confer tolerance of plants to abiotic stresses. The present review covers the aspects of herbicidal response of plants and evaluates the contribution of plant growth regulators in mitigating herbicidal stress effects and increasing the tolerance of plants. Further, future research in this direction to enhance our understanding on the relation between plant growth regulators and herbicides to improve tolerance of crop plants is discussed. The study suggests the use of plant growth regulators as a tool in mitigating effects of herbicidal stress together with improved growth and development. [29]. The decrease in photosynthetic characteristics with herbicides might have involved its effects on chlorophyll biosynthetic pathway and enzymes of carbon assimilation. The details on the key points in the biosynthetic pathway of photosynthetic pigments and activity of carbon assimilation enzymes are still lacking and needs attention. Chlorophyll fluorescence is a simple and widely used method to study the mechanism of photosynthesis and is used as marker to detect stress in plants. The herbicides application may block photosynthesis related intermediate metabolites and affect fluorescence emission. The herbicides that inhibit glutamine synthase, protoporphyrinogen oxidase and carotenoid biosynthesis affect chlorophyll fluorescence [30], and even lipid synthesis inhibitor herbicides induce chlorophyll fluorescence. Application of 1.96 kg ha -1 Terbutryn to Vicia faba plants strongly decreased F v /F m ratio and CO 2 assimilation capacity [31]. Recently, Sousa et al. [32] have shown that application of imidazolinone group of herbicides to Oryza sativa changed the photosynthetic metabolism of plants and chlorophyll a fluorescence. Contribution of Plant Growth Regulators in Mitigation of Herbicidal Stress OsmolytesThe production of osmolytes is an adaptation against stress in plants [33]. These osmolytes include polyols (sugars, fructans, mannitol, pinitol and inositol), amino acids and their derivatives (proline, isoleucine, valine, betaine, glycinebetaine). Proline is widely studied osmolyte that acts as a cellular protector in several plant species by scavenging ROS produced in response to abiotic stress [34][35][36]. It provides resistance against stress either by uniting oxygen and free radicals g...

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Effect of 24-Epibrassinolide on Chlorophyll Fluorescence and Photosynthetic CO2 Assimilation in Vicia faba Plants Treated with the Photosynthesis-Inhibiting Herbicide Terbutryn

Cited by 46 publications

References 40 publications

The effects of the phenol concentrations on photosynthetic parameters of Salix babylonica L.

The effects of the phenol concentrations on photosynthetic parameters of Salix babylonica L.

Comparative effect of 28-homobrassinolide and 24-epibrassinolide on the growth, carbonic anhydrase activity and photosynthetic efficiency of Lycopersicon esculentum

Contribution of Plant Growth Regulators in Mitigation of Herbicidal Stress

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