Cadmium tolerance in Brassica juncea roots and shoots is affected by antioxidant status and phytochelatin biosynthesis

Mohamed, Amal A.; Castagna, Antonella; Ranieri, Annamaria; Toppi, Luigi Sanità di

doi:10.1016/j.plaphy.2012.05.002

Cited by 212 publications

(116 citation statements)

References 44 publications

Supporting

Mentioning

103

Contrasting

Unclassified

Order By: Relevance

“…In plants, PCs can confer tolerance to heavy metal, as indicated by numerous recent studies, including Cd tolerance in B. juncea (Mohamed et al 2012), Populus nigra (Iori et al 2012), Oenothera odorata (Son et al 2012), T. aestivum (Hentz et al 2012), and Linum usitatissimum (Najmanova et al 2012); As tolerance in Nicotiana tabacum (Shukla et al 2012) and Arabidopsis thaliana (Huang et al 2012); Zn and Cu tolerance in Arabidopsis thaliana (Huang et al 2012); and Mn tolerance in Vitis vinifera (Yao et al 2012). Glutathione conjugates metals by forming PCs, which can be translocated.…”

Section: Toxic Metals/metalloidsmentioning

confidence: 97%

Glutathione in plants: biosynthesis and physiological role in environmental stress tolerance

Hasanuzzaman

Nahar

Anee

et al. 2017

Physiol Mol Biol Plants

618

284

View full text Add to dashboard Cite

Glutathione (GSH; c-glutamyl-cysteinyl-glycine) is a small intracellular thiol molecule which is considered as a strong non-enzymatic antioxidant. Glutathione regulates multiple metabolic functions; for example, it protects membranes by maintaining the reduced state of both a-tocopherol and zeaxanthin, it prevents the oxidative denaturation of proteins under stress conditions by protecting their thiol groups, and it serves as a substrate for both glutathione peroxidase and glutathione S-transferase. By acting as a precursor of phytochelatins, GSH helps in the chelating of toxic metals/metalloids which are then transported and sequestered in the vacuole. The glyoxalase pathway (consisting of glyoxalase I and glyoxalase II enzymes) for detoxification of methylglyoxal, a cytotoxic molecule, also requires GSH in the first reaction step. For these reasons, much attention has recently been directed to elucidation of the role of this molecule in conferring tolerance to abiotic stress. Recently, this molecule has drawn much attention because of its interaction with other signaling molecules and phytohormones. In this review, we have discussed the recent progress in GSH biosynthesis, metabolism and its role in abiotic stress tolerance.

show abstract

Section: Toxic Metals/metalloidsmentioning

confidence: 97%

Glutathione in plants: biosynthesis and physiological role in environmental stress tolerance

Hasanuzzaman

Nahar

Anee

et al. 2017

Physiol Mol Biol Plants

618

284

View full text Add to dashboard Cite

show abstract

“…In A. thaliana Cd altered the activity of photosynthetic apparatus (Mohamed et al, 2012) while decreasing the potential quantum yield of PSII (Maksymiec et al, 2007). Similarly, the synthesis and level of pigments are decreased in other plant species under the influence of Cd (Mohamed et al, 2012;Irfan et al, 2013).…”

Section: Introductionmentioning

confidence: 96%

“…Cd is an effective inhibitor of photosynthesis (Mohamed et al, 2012). A linear relationship between photosynthesis and inhibition of transpiration was observed in clover, lucerne, and soybean that suggest Cd inhibited stomatal opening (Barcelo, Poschenrieder, 1990).…”

Section: Introductionmentioning

confidence: 96%

“…The inhibition of root Fe(III) reductase induced by Cd leads to Fe(II) deficiency which seriously affects photosynthesis (Alkantara et al, 1994). Cd also causes alteration in leaf gas exchange (López-Climent et al, 2011) stomatal closure in higher plants (Poschenrieder et al, 1989) and an overall inhibition of photosynthesis (Mohamed et al, 2012). In A. thaliana Cd altered the activity of photosynthetic apparatus (Mohamed et al, 2012) while decreasing the potential quantum yield of PSII (Maksymiec et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Cd also causes alteration in leaf gas exchange (López-Climent et al, 2011) stomatal closure in higher plants (Poschenrieder et al, 1989) and an overall inhibition of photosynthesis (Mohamed et al, 2012). In A. thaliana Cd altered the activity of photosynthetic apparatus (Mohamed et al, 2012) while decreasing the potential quantum yield of PSII (Maksymiec et al, 2007). Similarly, the synthesis and level of pigments are decreased in other plant species under the influence of Cd (Mohamed et al, 2012;Irfan et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The dynamics of photosynthetic parameters of Phaseolus vulgaris and Vicia fabo under strong cadmium stress

Januškaitienė¹

2014

biologija

View full text Add to dashboard Cite

One of the most toxic metals is cadmium, which inputs include those from commercial fertilizers, sewage sludge and other wastes used as soil amendments and also atmospheric deposition. The aim of this experiment was to study the dynamics of photosynthetic parameters of bean (Phaseolus vul garis L.) and broad bean (Vicia fabo L.) under strong cadmium stress effect. Plants were sown in a neutral (pH 6.0-6.5) peat substrate, when 2nd true leaf unfolded, growth substrate was watered with 6 mM concentration CdSO 4 solution. Gas exchange parameters (photosynthetic rate (Pn), transpiration rate (Tn), intercellular CO 2 concentration (Ci) and water use efficiency (WUE)) were measured every day with portable photosynthesis system LI-6400. Content of photosynthetic pigments was analyzed in acetone extract using a spectrophotometer on the last 5th day of the experiment. On the first day of treatment the Pn of Cd treated P. vulgaris plants decreased only by 4.3% and statistically insignificant, while Pn of V. fabo decreased by 35.9% (p < 0.05). Pn of P. vulgaris was decreasing till 3rd day after treatment, when it was 96% (p < 0.05) lower compared to reference treatment. On the contrary, the lowest Pn of Cd treated V. fabo plants was on the first day and it started to increase from the second day till the last one. WUE of Cd treated P. vulgaris was decreasing till the third day too and it improved a little on the last one, but still it was 54% (p < 0.05) lower compared to the re ference. While WUE of V. fabo increased by 23% (p < 0.05) and 16% (p > 0.05) on the first and the last day after Cd treatment, respectively compared to the reference. The changes, detected on the last day of the experiment, of chorophyll a and b ratio were different too, i. e. for P. vulgaris it decreased by 5.7% (p > 0.05), and for V. fabo -increased by 1.4% (p > 0.05) compared to the reference. Also decrease of dry biomass of P. vulgaris was greater than that of V. fabo.

show abstract

Proline and glycine betaine modulate cadmium‐induced oxidative stress tolerance in plants

Hossain

Burritt

Fujita

2015

Plant‐Environment Interaction

View full text Add to dashboard Cite

Cadmium tolerance in Brassica juncea roots and shoots is affected by antioxidant status and phytochelatin biosynthesis

Cited by 212 publications

References 44 publications

Glutathione in plants: biosynthesis and physiological role in environmental stress tolerance

Glutathione in plants: biosynthesis and physiological role in environmental stress tolerance

The dynamics of photosynthetic parameters of Phaseolus vulgaris and Vicia fabo under strong cadmium stress

Proline and glycine betaine modulate cadmium‐induced oxidative stress tolerance in plants

Contact Info

Product

Resources

About