Distribution, speciation, and bioaccumulation of potentially toxic elements in the grey mangroves at Indian Sundarbans, in relation to vessel movements

Chowdhury, Abhiroop; Naz, Aliya; Maiti, Subodh Kumar

doi:10.1016/j.marenvres.2023.106042

Cited by 15 publications

(5 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Intriguingly, several mangrove and mangrove associate species are also known to be valuable bio-resources of several secondary bioactive molecules such as polyphenols, flavonoids, anthocyanins, lignins, triterpenoids, prenylated terpenoids, limonoids, flavonoids, phenolics, tannins, polyisoprenoids, steroids, alkaloids, and saponins, many of which are reported to be of high medicinal value, high antioxidant potential of most of these secondary metabolites being the most common pharmacological activity ( Bandaranayake, 1998 ; Jiang et al., 2018 ; Zhang et al., 2018 ; Bibi et al., 2019 ; Roy and Dutta, 2021 ; Sudhir et al., 2022 ; Wu et al., 2022 ). However, ethnobotanical uses of these mangrove species pose a grave human health risk due to bioaccumulation of potentially toxic elements/heavy metals reported to occur in present day mangroves, a consequence of various environmental pollution and degradation criteria caused by natural and anthropogenic factors, prevailing across mangroves of Indian Sundarbans and Mallorquin Lagoon, Colombian Caribbean, both well-known Ramsar wetland sites ( Chowdhury et al., 2021 ; Chowdhury et al., 2023 ; Garcés−Ordóñez et al., 2023 ). The high metabolic costs expended for the synthesis of these bioactive secondary metabolites (known as plant defense contrivances)—apparently derived from the parent core phenylpropanoid biosynthetic pathway and its associated branch points—may be essentially justified by the benefit accrued in mitigating the oxidative stress damage induced under the extreme niche parameters of the mangrove habitat, including high salinity ( Dixon and Paiva, 1995 ; Wang et al., 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Detection of a bibenzyl core scaffold in 28 common mangrove and associate species of the Indian Sundarbans: potential signature molecule for mangrove salinity stress acclimation

Sarkar,

Kotal,

Giri

et al. 2024

Front. Plant Sci.

View full text Add to dashboard Cite

Bibenzyl derivatives comprising two benzene rings are secondary plant metabolites with significant therapeutic value. To date, bibenzyl derivatives in the Plant kingdom have been primarily identified in bryophytes, orchids, and Cannabis sativa. The metabolic cost investment by plant species for the synthesis of these bioactive secondary metabolites is rationalized as a mechanism of plant defense in response to oxidative stress induced by biotic/abiotic factors. Bibenzyl derivatives are synthesized from core phenylpropanoid biosynthetic pathway offshoots in plant species. Mangrove and mangrove associate species thrive under extreme ecological niches such as a hypersaline intertidal environment through unique adaptive and acclimative characteristics, primarily involving osmotic adjustments followed by oxidative stress abatement. Several primary/secondary bioactive metabolites in mangrove species have been identified as components of salinity stress adaptation/acclimation/mitigation; however, the existence of a bibenzyl scaffold in mangrove species functioning in this context remains unknown. We here report the confirmed detection of a core bibenzyl scaffold from extensive gas chromatography-mass spectrometry and gas chromatography-flame ionization detection analyses of 28 mangrove and mangrove associate species from the Indian Sundarbans. We speculate that the common presence of this bibenzyl core molecule in 28 mangrove and associate species may be related to its synthesis via branches of the phenylpropanoid biosynthetic pathway induced under high salinity, which functions to detoxify reactive oxygen species as a protection for the maintenance of plant metabolic processes. This finding reveals a new eco-physiological functional role of bibenzyls in unique mangrove ecosystem.

show abstract

Section: Introductionmentioning

confidence: 99%

Detection of a bibenzyl core scaffold in 28 common mangrove and associate species of the Indian Sundarbans: potential signature molecule for mangrove salinity stress acclimation

Sarkar,

Kotal,

Giri

et al. 2024

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…Heavy metals are the most ubiquitous environmental pollutants affecting the quality of water resources even in the most remote places on Earth, for example, Tibet, Sundarbans, Amazonia, the Pacific region, the Polar region, and others [ 7 , 8 , 9 , 10 , 11 , 12 ]. Inland waters such as rivers, lakes, streams, and even groundwater are also subject to heavy metal pollution [ 13 , 14 , 15 , 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Distribution of Essential and Toxic Elements in Pelecus cultratus Tissues and Risk Assessment for Consumer Health

Payuta,

Flerova,

Zaitseva

2023

Toxics

View full text Add to dashboard Cite

Nowadays, the problem of inland water pollution is acute. It is caused by vast industrial growth and agricultural intensification. Concentrations of Cd, Pb, Zn, Cu, Mn, Fe, Mg, and Kwere determined in the muscles, liver, and gonads sabrefish from Rybinsk Reservoir areas with different anthropogenic loads. The tissue samples were analyzed by atomic absorption spectrometry. Heavy metals accumulated more intensively in the body of fish from more polluted areas of the reservoir. Among the analyzed elements, the maximum accumulation levels were found for K, Zn, and Fe and the minimum levels were observed for Cd and Pb. The gonads contained the largest concentration of Cd and Mn, the muscles contained the highest concentrations of Mg, and the other elements mainly accumulated in the liver of sabrefish. The THQ and HI values for all elements did not exceed 1, which suggests that there is no potential non-carcinogenic risk to human health. The target values of carcinogenic risk (TR) for cadmium ranged from 8.32 × 10−6 to 1.22 × 10−4 in the muscles. The increased content of cadmium in the gonads of sabrefish not only poses a risk to human health, but also to the reproduction of this species in the Rybinsk Reservoir.

show abstract

“…Heavy metals are difficult to degrade, highly toxic, and easily transported, endangering entire ecosystems and affecting human health through the food chain. Although some areas are remote or have no industrial activities, such as mangroves and grasslands, heavy metal accumulation has occurred, harming the environment and humans, mainly due to waterborne transport and long-range transport of contaminant mining [ 3 , 4 , 5 ], which indicates that there is a possibility of pollution risk in any ecosystem. Meanwhile, with increasing urbanization and frequent human activities, pollutants like heavy metals have accumulated in urban wetlands on the Qinghai–Tibet Plateau, where the ecosystem is fragile and sensitive, which is more worthy of our attention.…”

Section: Introductionmentioning

confidence: 99%

Non–Negligible Ecological Risks of Urban Wetlands Caused by Cd and Hg on the Qinghai–Tibet Plateau, China

Wang

Mao

Song³

et al. 2023

Toxics

View full text Add to dashboard Cite

The Huangshui National Wetland Park (HNWP) is a unique national wetland park in a city on the Qinghai-Tibetan Plateau, containing three zones: Haihu, Beichuan, and Ninghu. In this study, a total of 54 soil samples (18 sampling points with depths of 0–10 cm, 10–20 cm, and 20–30 cm) were collected in these three zones, and the contents of heavy metals (Cr, Cd, Cu, Hg, Ni, Pb, Zn, and As) of each sample were determined. The ecological risk of eight kinds of heavy metals was evaluated by using the geo–accumulation index (Igeo), and the ecological risk–controlling effect of the Xining urban wetlands on heavy metals was explored by comparative analysis, and the possible sources of heavy metals in the soil were analyzed via correlation analysis and principal component analysis (PCA). The results revealed that the total heavy metal concentration order was Haihu > Beichuan > Ninghu zone. As and Cu presented vertical accumulation characteristics in the surface and lower horizon, respectively. Cr, Cd, Hg, Ni, Pb, and Zn accumulated downwards along the depth. On the spatial scale, the enrichments of Cd and Hg brought non-negligible ecological risks in plateau urban wetlands. The results of PCA indicated that soil heavy metals mainly came from compound sources of domestic and atmospheric influences, traffic pollution sources, and industrial pollution sources. The study has revealed that human activities have inevitable negative impacts on wetland ecosystems, while the HNWP provides a significant weakening effect on heavy metal pollution.

show abstract

Distribution, speciation, and bioaccumulation of potentially toxic elements in the grey mangroves at Indian Sundarbans, in relation to vessel movements

Cited by 15 publications

References 78 publications

Detection of a bibenzyl core scaffold in 28 common mangrove and associate species of the Indian Sundarbans: potential signature molecule for mangrove salinity stress acclimation

Detection of a bibenzyl core scaffold in 28 common mangrove and associate species of the Indian Sundarbans: potential signature molecule for mangrove salinity stress acclimation

Distribution of Essential and Toxic Elements in Pelecus cultratus Tissues and Risk Assessment for Consumer Health

Non–Negligible Ecological Risks of Urban Wetlands Caused by Cd and Hg on the Qinghai–Tibet Plateau, China

Contact Info

Product

Resources

About