Photosynthesis and Antioxidant Capacity in Barley Seedlings under the Combined Toxicity of Cadmium and Aluminum

2012 ◽  
Vol 610-613 ◽  
pp. 467-471
Author(s):  
Tian Rong Guo
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Capacity ◽  
Photosynthetic Activity ◽  
Photosynthetic Pigment ◽  
Pigment Content ◽  
Stress Exposure ◽  
Combined Toxicity ◽  
Barley Leaves ◽  
Mda Content ◽  
Photosynthetic Pigment Content

Photosynthetic pigment content and photosynthetic activity, as well as the antioxidant capacity were estimated in barley seedlings after 10 or 20 d supplies of Al and Cd individual or combined in nutrient solution. The results showed that stress exposure strongly decreased photosynthetic pigment content and photosynthetic activity, as well as induced oxidative damage as evidenced by increased the activities of peroxidase (POD) and superoxide dismutase (SOD), and malonaldehyde (MDA) content in barley leaves. The most obvious response was found in plants exposed to higher levels of Cd (10 μmol/L) or Al (90 μmol/L) in the nutrient medium. Binary metal combinations generally aggravated photosynthesis reduction and induced more serious oxidative stress as compared with Al or Cd single treatments, and the most deleterious effects were observed in the combination of 90 μmol/L Al+5 μmol/L Cd.

Cadmium toxicity induces lipid peroxidation and alters cytokinin content and antioxidant enzyme activities in soybean

Botany ◽  
2014 ◽  
Vol 92 (1) ◽  
pp. 1-7 ◽  
Author(s):  
H.A. Hashem
Keyword(s):  
Oxidative Stress ◽  
Hydrogen Peroxide ◽  
Lipid Peroxidation ◽  
Induced Defense ◽  
Cadmium Toxicity ◽  
Photosynthetic Pigment ◽  
Pigment Content ◽  
Antioxidant Enzyme Activities ◽  
Cytokinin Content ◽  
Photosynthetic Pigment Content

The short-term effect of exposure (24 to 72 h) to various concentrations of CdCl2 on cytokinin content, lipid peroxidation, hydrogen peroxide level, and reduced glutathione content, as well as the activities of representative enzymes of the antioxidant defense system, were investigated in soybean. In addition, the deleterious effects of cadmium poisoning on soybean growth and photosynthetic pigment content were recorded. Exposure to cadmium significantly inhibited growth and severely reduced photosynthetic pigment content. Cadmium treatment was also found to increase lipid peroxidation and hydrogen peroxide levels, indicating that cadmium can induce an oxidative stress response in leaves. Inhibition of cytokinin fractions (zeatin and zeatine riboside) were also detected in all tested cadmium concentrations, zeatin being most severely affected. We also found that exposure to cadmium increased the activities of superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase and altered glutathione content. This is representative of a cadmium-induced defense mechanism required to cope with elevated oxidative stress.

scholarly journals The Effect of Cadmium on Oxidative Stress in Beta vulgaris

2018 ◽  
Vol 25 (3) ◽  
pp. 457-467 ◽  
Author(s):  
Agnieszka Rombel-Bryzek ◽  
Małgorzata Rajfur ◽  
Olga Żuk ◽  
Patryk Zając
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Beta Vulgaris ◽  
Cadmium Concentration ◽  
Photosynthetic Pigment ◽  
Pigment Content ◽  
Ros Scavenging ◽  
Sod Activity ◽  
Photosynthetic Pigment Content ◽  
Activity Of Enzymes

Abstract As a heavy metal, cadmium has strongly toxic effects on plants and can induce oxidative stress. It is absorbed by the roots and transported to the stems and leaves. The aim of the study was to evaluate the effect of various concentrations of cadmium on the metabolic activity of Beta vulgaris and assess the dependence of these processes on the content of metal in the plants. To demonstrate the effect of cadmium on metabolism, protein and photosynthetic pigment content, lipid peroxidation, and the activity of enzymes specific for oxidative stress in roots and shoots were measured. Seeds of B. vulgaris were treated with different concentrations of Cd supplied via a CdCl2 solution: 0 (control), 200, 300 and 400 mg/dm3. Results of the present study revealed increased GPOX activity as cadmium concentration rose, while SOD activity was stimulated by a low Cd concentration (200 mg/dm3) and reduced by high levels of Cd. Based on the present findings, it can be concluded that GPOX in B. vulgaris played a more important role in ROS scavenging than SOD did and was able to reduce the level of lipid peroxidation in plants. Cadmium, in the concentration range used, did not show any significant effect on protein or photosynthetic pigment content.

Study on the Photosynthetic Efficiency of the Bauhinia blakeana Leaves by Using Photo-Acoustic Tomography Technology

2013 ◽  
Vol 807-809 ◽  
pp. 1010-1014
Author(s):  
Gan Wen Lie ◽  
Guang Hua Lie ◽  
Ding Chao Pan ◽  
Long Hua Ye ◽  
Dong Yu Li
Keyword(s):  
Optical Absorption ◽  
Photosynthetic Efficiency ◽  
Photosynthetic Pigment ◽  
Pigment Content ◽  
Optical Absorption Coefficient ◽  
Growth Time ◽  
Acoustic Tomography ◽  
Single Beam ◽  
Green Leaves ◽  
Photosynthetic Pigment Content

By using a new kind of single-beam normalized photo-acoustic tomography spectroscopy (PAS-CT) technology with non-damage detection, the photo-acoustic tomography spectroscopy and optical absorption properties of green and yellow leaves ofBauhinia blakeanawere studied. The results show that: the photo-acoustic tomography spectroscopy ofBauhinia blakeanaleaves could be obtained from different chopping frequency and different sample positions, and photosynthetic pigment content of their leaves is closely related to their photosynthetic intensity. The more photosynthetic pigment content the leaves ofBauhinia blakeanacontain, the bigger optical absorption coefficient and the higher photosynthetic efficiency they have. The photosynthetic pigment content of the green leaves ofBauhinia blakeanais higher than that of the yellow ones. As a result, the photosynthesis of green leaves is better than that of the yellow ones. According to the results of our research, the photosynthetic efficiency ofBauhinia blakeanacould be improved and its growth time could be effectively controlled to enhance the growth ofBauhinia blakeana. Furthermore, it could play an important role on the development of forestry, and meet the need of forest for 6 billion people. The research showed high science value to the study and applications of the photosynthesis of plants.

Study on the Photosynthetic Efficiency of the Bischofia javanica Leaves by Using Photo-Acoustic Tomography Technology

2013 ◽  
Vol 807-809 ◽  
pp. 596-600
Author(s):  
Gan Wen Lie ◽  
Guang Hua Lie ◽  
Hou Zhu Mao ◽  
Dong Yu Li
Keyword(s):  
Optical Absorption ◽  
Photosynthetic Efficiency ◽  
Photosynthetic Pigment ◽  
Pigment Content ◽  
Optical Absorption Coefficient ◽  
Growth Time ◽  
Acoustic Tomography ◽  
Green Leaves ◽  
Photosynthetic Pigment Content ◽  
Bischofia Javanica

By using a new kind of single-beam normalized photo-acoustic tomography spectroscopy (PAS-CT) technology with non-damage detection, the photo-acoustic tomography spectroscopy, optical absorption properties and photosynthetic pigment content of green and red leaves ofBischofia javanicawere studied. The results show that: the photo-acoustic tomography spectroscopy ofBischofia javanicaleaves could be obtained from different chopping frequency and different sample positions, and photosynthetic pigment content of their leaves is closely related to their photosynthetic intensity. The more photosynthetic pigment content the leaves ofBischofia javanicacontain, the bigger optical absorption coefficient and the higher photosynthetic efficiency they have. The photosynthetic pigment content of the green leaves ofBischofia javanicais higher than that of the red ones. As a result, the photosynthesis of green leaves is better than that of the red ones. According to the results of our research, the photosynthetic efficiency ofBischofia javanicacould be improved and its growth time could be effectively controlled to enhance the growth ofBischofia javanica. Furthermore, it could play an important role on the development of forestry, and meet the need of forest for 6 billion people. The research showed high science value to study and applications of the photosynthesis of plants.

Study on the Photosynthetic Efficiency of the Cinnamomum camphora Leaves by Using Photo-Acoustic Tomography Spectroscopy Technology

2012 ◽  
Vol 550-553 ◽  
pp. 1443-1447
Author(s):  
Guang Hua Lie ◽  
Gan Wen Lie ◽  
Han Lan Ke ◽  
Ting Yang ◽  
Dong Yu Li ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Absorption Coefficient ◽  
Damage Detection ◽  
Photosynthetic Efficiency ◽  
Photosynthetic Pigment ◽  
Pigment Content ◽  
Optical Absorption Coefficient ◽  
Acoustic Tomography ◽  
Cinnamomum Camphora ◽  
Photosynthetic Pigment Content

By using a new kind of single-beam normalized photo-acoustic tomography spectroscopy (PAS-CT) technology with non-damage detection, the photo-acoustic tomography spectroscopy, optical absorption properties and photosynthetic pigment content of the green and yellow leaves of Cinnamomum camphora were studied. The results show that: photo-acoustic tomography spectroscopy could be obtained from different chopping frequency and different sample position. The more photosynthetic pigment content the leaves of Cinnamomum camphora contains, the bigger optical absorption coefficient and the higher photosynthetic efficiency they have. In the research, we could find that the photosynthetic pigment content of the green leaves of Cinnamomum camphora is higher than that of the red ones. As a result, the optical absorption coefficient and the photosynthetic efficiency of the green ones are higher than the red ones. The photo-acoustic tomography spectroscopy technology could be a kind of non-damage detection to confirm the growth of trees.

Study on the Photosynthetic Efficiency of the Osmanthus fragrans Leaves by Using Photo-Acoustic Tomography Spectroscopy Technology

2013 ◽  
Vol 641-642 ◽  
pp. 979-983
Author(s):  
Guang Hua Lie ◽  
Gan Wen Lie ◽  
Hua Lin Cai ◽  
Han Lan Ke ◽  
Ding Chao Pan
Keyword(s):  
Optical Absorption ◽  
Absorption Coefficient ◽  
Damage Detection ◽  
Photosynthetic Efficiency ◽  
Photosynthetic Pigment ◽  
Pigment Content ◽  
Optical Absorption Coefficient ◽  
Acoustic Tomography ◽  
Osmanthus Fragrans ◽  
Photosynthetic Pigment Content

By using a new kind of single-beam normalized photo-acoustic tomography spectroscopy (PAS-CT) technology with non-damage detection, the photo-acoustic tomography spectroscopy, optical absorption properties and photosynthetic pigment content of the green and yellow leaves of Osmanthus fragrans were studied. The results show that: photo-acoustic tomography spectroscopy could be obtained from different chopping frequency and different sample position. The more photosynthetic pigment content the leaves of Osmanthus fragrans contains, the bigger optical absorption coefficient and the higher photosynthetic efficiency they have. In the research, we could find that the photosynthetic pigment content of the green leaves of Osmanthus fragrans is higher than that of the yellow ones. As a result, the optical absorption coefficient and the photosynthetic efficiency of the green ones are higher than the yellow ones. The photo-acoustic tomography spectroscopy technology could be a kind of non-damage detection to confirm the growth of trees.

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