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N., U.; Gupta, Meetu; Tripathi, Rudra Deo; Prakāsh, Chandra

doi:10.1023/a:1004923908436

Cited by 24 publications

(3 citation statements)

References 21 publications

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“…The remarkable decrease of total chlorophyll/carotenoid ratio in leaves treated with Cu at concentrations above 1 lM supports the conclusion that the carotenoid pool is more resistant for abiotic stress imposed by Cu and/or carotenoid biosynthesis is elevated upon Cu exposure. The enhanced carotenoid biosynthesis under mild abiotic stress conditions has been observed in other aquatic organisms (Mazurek et al 1990;Rai et al 1998). In contrast to photosynthetic pigments, the relative concentrations of both soluble and membrane bound proteins in these cellular fractions became less sensitive for Cu treatment.…”

Section: Resultsmentioning

confidence: 77%

Copper Toxicity in Leaves of Elodea canadensis Michx.

Malec

Maleva²,

Prasad

et al. 2009

Bull Environ Contam Toxicol

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Elodea canadensis (Canadian waterweed) has an ability to accumulate and bioconcentrate heavy metals. In this work, selected cellular responses for Cu treatment were studied in leaves of E. canadensis. Short term experiments, i.e. 1 week exposure to 0.5, 1, 5, and 10 microM of Cu indicated that concentrations up to 10 microM Cu causes a pronounced accumulation of photosynthetic pigments, a drastic degradation of soluble proteins with molecular weight above 18 kDa and a rapid accumulation of polypeptides with molecular weight below 14 kDa. The connection of these observations with copper detoxification mechanisms in aquatic macrophytes are discussed.

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Section: Resultsmentioning

confidence: 77%

Copper Toxicity in Leaves of Elodea canadensis Michx.

Malec

Maleva²,

Prasad

et al. 2009

Bull Environ Contam Toxicol

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“…This is the first report to show structure of rice NR in silico based on previous literature (Dias et al, 1999; Campbell, 2001; Fischer et al, 2005; Seenivasagan et al, 2016; Chamizo-Ampudia et al, 2017). Many earlier reports have suggested a negative impact of heavy metal Cd on NR activity (Rai et al, 1998; Gouia et al, 2000; Irfan et al, 2014). Though there is a lot of wet lab work on the effect of cadmium toxicity on NR activity in plants, still the mechanism underneath has not been explored much.…”

Section: Discussionmentioning

confidence: 95%

Reduced Activity of Nitrate Reductase Under Heavy Metal Cadmium Stress in Rice: An in silico Answer

Singh

Shah

2019

Front. Plant Sci.

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Cadmium is a well known toxic heavy metal, which has various detrimental effects on plant system. In plants an important enzyme involved in the production of nitric oxide, nitrate reductase, is also affected by cadmium toxicity. According to many studies cadmium has an inhibitory effect on nitrate reductase activity. Similar effect of cadmium was found in our study where an inhibitory effect of cadmium on nitrate reductase activity was noted. However, the mechanism behind this inhibition has not been explored. With the help of homology, 3-D structure of rice-nitrate reductase is modeled in this study. Its binding with nitrate, nitrite and cadmium metal in silico has been explored. The bonds formed between the enzyme-substrate complex, enzyme-cadmium and differences in interactions in presence of cadmium has been studied in detail. The present study should help in understanding the modeled structure of rice-nitrate reductase in 3-D which may in turn guide enzyme related studies in silico. The present study also provides an insight as to how cadmium interacts with nitrate reductase to alter the enzyme activity.

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“…Long term treatment of Cd, Ni and Pb caused a decrease in protein content may be due to the breakdown of soluble proteins or due to the increased activity of proteins or other catabolic enzymes which were activated and destroyed the proteins (Rai et al, 1998). It is well known that metals interfere with number of metabolic processes associated with normal development, especially synthesis of proteins (Vierstra, 1993).…”

Section: Discussionmentioning

confidence: 99%

Effect Of Heavy Metal Stress (Pb, Ni and Cd) On Protein And Fat Content Of The Moss Thuidium cymbifolium (Doz. and Molk.) Doz. And Molk

Saxena

Kaur

2006

ECJ

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In the present study individual effect of Pb, Ni and Cd respectively was studied on protein and fat content of the moss Thuidium cymbifolium. A decrease in protein content was noticed in moss treated with Ni and Cd for 3 days, whereas for Pb an increase of 18 % was noticed at 0.1 M conc. However following an exposure period of 6 days, a significant increase in protein content was noticed for all metals, which again declined after 15 days of treatment. A significant increase in fat content of the moss (136 % and 269 % at 0.1 and 0.2 M Pb) was noted after 3 days. Conversely the increase in Cd ranged between 1-27 % during 72 hrs treatment that further increased to 77 % at 0.2 M Cd concentration following 6 days of exposure. After 15 days of Pb, Ni and Cd treatment a more or less decreasing trend was noticed with increasing concentration. Results revealed that T. cymbifolium shows heavy metal sensitivity as evidenced by change in protein and fat content.

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Untitled

Cited by 24 publications

References 21 publications

Copper Toxicity in Leaves of Elodea canadensis Michx.

Copper Toxicity in Leaves of Elodea canadensis Michx.

Reduced Activity of Nitrate Reductase Under Heavy Metal Cadmium Stress in Rice: An in silico Answer

Effect Of Heavy Metal Stress (Pb, Ni and Cd) On Protein And Fat Content Of The Moss Thuidium cymbifolium (Doz. and Molk.) Doz. And Molk

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