Effect of heavy metals on insects

Singh, Sumit; Diksha, .; Mahajan, Evani; Sohal, Satwinder Kaur

doi:10.1016/b978-0-323-85621-8.00014-5

Cited by 3 publications

(3 citation statements)

References 167 publications

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“…16 Although the effect of leaf age on GLS distribution within the plant is well understood, it is currently not clear whether GLS hydrolysis is affected, as well. As ITCs have strong effects concerning pest control, 17,18 plants could benefit not only from accumulating of GLSs in young leaves but also from shifting GLS hydrolysis from CN or ETN toward enhanced ITC formation. Such higher ITC formation would provide a healthier option regarding human consumption of Brassica vegetables.…”

Section: ■ Introductionmentioning

confidence: 99%

Glucosinolate Accumulation and Hydrolysis in Leafy Brassica Vegetables Are Influenced by Leaf Age

Púčiková

Rohn

Hanschen

2023

J. Agric. Food Chem.

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The health-beneficial effects of Brassica vegetables are mainly attributed to their high contents of glucosinolates and the products of their hydrolysis, especially isothiocyanates. Distribution of glucosinolates across plant organs can strongly vary. Here, we investigated the effect of leaf age on glucosinolate accumulation and hydrolysis in two leafy Brassica vegetables, pak choi and giant red mustard. We also evaluated the activity of the hydrolyzing enzyme myrosinase across the leaves. Finally, we assessed whether glucosinolates are transported from older leaves to younger leaves. Young leaves of both species contained more than 3-fold more glucosinolates than older ones. Accordingly, more isothiocyanates were released in the young leaves. Myrosinases fully hydrolyzed all of the amounts of glucosinolates regardless of the leaf age. Moreover, older leaves were observed to supply younger leaves with glucosinolates. Thus, this study suggests that consumers can improve the nutritional value of food by incorporating young leaves of leafy Brassicas in their diet.

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Section: ■ Introductionmentioning

confidence: 99%

Glucosinolate Accumulation and Hydrolysis in Leafy Brassica Vegetables Are Influenced by Leaf Age

Púčiková

Rohn

Hanschen

2023

J. Agric. Food Chem.

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“…15 Although the effect of leaf age on GLS distribution within the plant is well understood, it is not clear if GLS hydrolysis is affected as well. As ITCs have strong effects concerning pest control [17][18] , plants could benefit not only from accumulating of GLSs in young leaves, but rather from shifting GLS hydrolysis towards enhanced ITC formation, providing also a healthier option regarding human consumption. In this study, the effect of leaf age on GLS accumulation and hydrolysis outcome was investigated in two Brassica vegetables; pak choi (Brassica rapa L. subsp.…”

Section: Introductionmentioning

confidence: 99%

Glucosinolate accumulation and hydrolysis in leafy Brassica vegetables are depending on leaf age

Púčiková

Rohn

Hanschen

2023

Preprint

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The health-beneficial effects of Brassica vegetables are mainly attributed to their high contents of glucosinolates and the products of their enzymatic hydrolysis, especially isothiocyanates. Distribution of glucosinolates across plant organs can strongly vary. Consequently, the effect of leaf age on glucosinolate accumulation as well as hydrolysis was investigated in two leafy Brassica vegetables, pak choi and giant red mustard. Furthermore, activity of the hydrolyzing enzyme, myrosinase, was evaluated across the leaves. Additionally, a possible glucosinolate transport from older to younger leaves was monitored. Young leaves of both species contained of more glucosinolates than old ones. Accordingly, more isothiocyanates were released upon glucosinolate hydrolysis in young leaves. Myrosinases fully hydrolyzed the whole glucosinolates regardless of the leaf age. It was confirmed that older leaves can supply younger leaves with glucosinolates. The results can help to improve the health-beneficial value of Brassicas in the diet by an increased formation of isothiocyanates.

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“…Residues of such persistent chemicals are laid down and transferred to a higher level in the food chain. Insects are usually used as bio-indicators of HMs, due to their mobility, abundance, and the variety of their physiology and morphology [7,8]. They can tolerate the accumulation of HMs in their tissues and organs, and they can survive in polluted soil because of their genetic adaptation [9,10].…”

Section: Introductionmentioning

confidence: 99%

Heavy Metals Concentrations and their Impact on the Enzyme Activities in Two Species of Darking Beetles; Eleodes armata (Le Conte) and Eleodes tricostata (Coleoptera: Tenebrionidae)

2023

Arch Environ Sci Environ Toxicol

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The contamination of environment with cement dust that contains heavy metals (HMs), is a severe problem due to adverse impact on the environmental safety and human health. This study has evaluated to quantify the concentration of heavy metals (Mg, Cu, Pb, Fe, Zn, Cd, and Ni), in the soil and accumulation of heavy metals in leaf litter as well as two species of beetles; Eleodes armata and Eleodes tricostata collected from surroundings of cement factory in Al-Ahsa, Eastern region of Saudi Arabia, comparing with reference site, that was away from the first one by about 30 Km. The results showed that for the cement site, the lowest concentration of HMs in soil samples was recorded for Cd (2.30±0.03 mg/kg), while the highest concentration was recorded for Pb (42.43±0.31 mg/kg). Concentrations of Cd in soil from the cement site was three times higher than in soil from reference site. Also, the concentration of HMs in soil, leaf litter and beetles collected from the two inspected sites were in order of Pb > Mg > Fe > Zn > Cu > Ni > Cd. Statistical analysis showed that the concentrations of HMs in soil, leaf litter and beetles collected from cement site were obviously significantly higher (p<0.05) than those recorded in different specimens collected from the reference site. The concentrations of Mg, Fe and Pb are the highest recorded concentrations of HMs for all collected samples. There were significant differences in their concentrations between the two selected species of beetles (t = 5.37, p < 0.033; t = 11.31, p < 0.0001; t = 66.40, p < 0.0002, respectively) collected from the cement site. Correlation coefficient showed that there was an accumulation of HMs from soil to leaf litter to beetles tissues. Moreover, the activities of transaminases; Aspartate Aminotransferase (AST) and Alanine Aminotransferase (ALT) as well as the protein content of both sexes of selected beetles̕ species were significantly lower in beetle tissues collected from the cement site than those collected the reference one.

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Effect of heavy metals on insects

Cited by 3 publications

References 167 publications

Glucosinolate Accumulation and Hydrolysis in Leafy Brassica Vegetables Are Influenced by Leaf Age

Glucosinolate Accumulation and Hydrolysis in Leafy Brassica Vegetables Are Influenced by Leaf Age

Glucosinolate accumulation and hydrolysis in leafy Brassica vegetables are depending on leaf age

Heavy Metals Concentrations and their Impact on the Enzyme Activities in Two Species of Darking Beetles; Eleodes armata (Le Conte) and Eleodes tricostata (Coleoptera: Tenebrionidae)

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