scholarly journals An efficient antioxidant system and heavy metal exclusion from leaves make Solanum cheesmaniae more tolerant to Cu than its cultivated counterpart

2017 ◽  
Vol 6 (3) ◽  
pp. 123-133 ◽  
Author(s):  
Simão Branco-Neves ◽  
Cristiano Soares ◽  
Alexandra de Sousa ◽  
Viviana Martins ◽  
Manuel Azenha ◽  
...  



Author(s):  
Husna ◽  
Anwar Hussain ◽  
Mohib Shah ◽  
Muhammad Hamayun ◽  
Amjad Iqbal ◽  
...  




2021 ◽  
Vol 12 (4) ◽  
Author(s):  
I. V. Kalinin ◽  
◽  
V. A. Tomchuk ◽  
V. A. Gryshchenko ◽  
◽  
...  

The study was undertaken to examine the effect of heavy metals on antioxidant system and biochemical indexes in the organism of rats. The influence of heavy metals on indexes The influence of heavy metals on the indicators of the antioxidant system (activity of the antioxidant system enzymes – glutathione peroxidase, glutathione reductase, catalase, and superoxide dismutase) and the processes of lipid peroxidation (content of hydroperoxides and products of thiobarbituric acid) was determined. It is established, that the antioxidant system functions more intensively in blood and liver of rats under the action of heavy metals. The study of enzyme activity showed the activation of the latter under conditions of heavy metal intoxication in 1.5–2.0 times (depending on heavy metal) compared with the control. We found that blood levels of total and direct bilirubin, creatinine, and urea increased in intoxicated rats from all experimental groups compared with intact animals. However, a decrease in the content of albumin, total protein, cholesterol, and triglycerides was also found in all experimental groups, in comparison with intact rats. Under the action of heavy metals, the activity of total α-amylase, lactate dehydrogenase, and glucose concentration increases in blood of rats. According to the results of studies in intoxicated animals compared with the intact group, there was a change in the cation-anion pool, in particular, a tendency to decrease the content of sodium and inorganic phosphorus and increase chlorides, magnesium, calcium, and potassium.



2021 ◽  
Author(s):  
Husna Husna ◽  
Anwar Hussain ◽  
Mohib Shah ◽  
Muhammad Hamayun ◽  
Amjad Iqbal ◽  
...  

Abstract Heavy metal contamination due to anthropogenic activities is a great threat to modern humanity. A novel and natural technique of bioremediation using microbes for detoxification of HMs while improving plants' growth is the call of the day. In this study, exposing soybean plants to different concentrations (i.e., 10 and 50 µg/mL) of chromium and arsenic showed a severe reduction in agronomic attributes, higher ROS production, and disruption in the antioxidant system. Contrarily, rhizobacterial isolate C18 inoculation not only rescued host growth, but also improved the production of nonenzymatic antioxidants (i.e., flavonoids, phenolic and proline contents) and enzymatic antioxidants (i.e., CAT, APX, POD, and DPPH), higher ROS scavenging, and lower ROS accumulation. Thereby, lowering secondary oxidative stress and subsequent damage. The strain was identified using 16S rDNA sequencing, and was identified as Pseudocitrobacter anthropi. Additionally, the strain can endure metals up to 1200 µg/mL and efficient in detoxifying the effect of Cr and As, by regulating phytohormones (IAA 59.02 μg/mL and GA 101.88 nM/mL) and solubilizing inorganic phosphates, making them excellent phytostimulant, biofertilizers, and heavy metal bio-remediating agent.





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