Heavy metals accumulation in crop plants: Sources, response mechanisms, stress tolerance and their effects

Kumar, Vishnu; Singh, Jogendra; Kumar, Prasann

doi:10.26832/aesa-2019-cae-0161-04

Cited by 32 publications

(19 citation statements)

References 52 publications

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“…The As content in the seeds and leaves of Parkia biglobosa does not show many discrepancies; this may be because of enzyme activities on this metal in these organs, degrading the metal to the minimum level of less toxic over time. This is in line with Kumar et al (2019) study, who have reported the plantʼs ability to metabolise heavy metals during nutrient acquisition. The following nutrient elements do not show any significant difference (p > 0.05); Mg, Na, K, P and N in seeds of Parkia biglobosa.…”

Section: Discussionsupporting

confidence: 92%

Accumulation of heavy metals and minerals in soil rhizosphere and organs of Parkia biglobosa and Butryospermum paradoxum growing at the lead polluted site in Niger State, Nigeria

et al. 2022

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Anthropogenic activities inducing the accumulation of trace elements in Madaka village (between latitudes 6°00' E and 7°00' E, and 10°00' N and 10°04' N longitudes) of Rafi Local Government Area (Kagara, Niger State, Nigeria) have claimed many lives in the past. This study evaluated the accumulation of heavy metals and minerals in Butryospermum paradoxum and Parkia biglobosa and their soil rhizosphere at the lead polluted site around Madaka village of Rafi Local Government Area (Kagara, Niger State, Nigeria). Lead, arsenic, pH, nitrogen (%), organic carbon (%), organic matter (%), P, K, Na, Ca, Mg, N and cation exchange capacity were determined. Results showed significant differences (p < 0.05) between the Pb content in the soil from control (3.13 ± 1.010 mg/kg) and polluted sites (12.71 ± 1.010 mg/kg), and in the seeds of Butryospermum paradoxum from control (3.80 ± 0.09 mg/kg) and polluted sites (13.10 ± 0.10 mg/kg). A significant (p < 0.05) difference was also observed between the Pb content in Parkia biglobosa seeds from the control site (2.50 ± 0.10 mg/kg) and from the polluted site (14.10 ± 1.10 mg/kg). Overall, no significant differences (p > 0.05) were observed in the nutrient contents among all samples analysed. A significantly high concentration of Pb and As in these plants around the lead polluted site poses a great health concern. This calls for the public’s attention, both governmental and non-governmental organisations, to intervene by creating awareness of the likelihood of their bioconcentration in humans and animals that consume these plants.

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Section: Discussionsupporting

confidence: 92%

Accumulation of heavy metals and minerals in soil rhizosphere and organs of Parkia biglobosa and Butryospermum paradoxum growing at the lead polluted site in Niger State, Nigeria

et al. 2022

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“…Concepts of forest constructed wetlands are naturally for wastewater treatment systems, which are designed to utilize the natural purification processes involving wetland plants, substrates, and the associated microbes (Cheng et al, 2018;Hlihor et al, 2017). Bangkal tree and galam tree can adsorb higher Fe and Mn in condition pH <4 and lonkida tree and kayuputih higher to adsorb Fe and Mn in pH >4 (Kumar et al, 2019).…”

Section: Tree Species Selected For Swampy Forest Systemmentioning

confidence: 99%

Role of the Tree Species Selected in Developing Swampy Forest System for Passive Treatment of Acid Mine Drainage

Noor

Arifin²,

Priatmadi³

et al. 2022

Sustainability

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Coal mining is one of economic sector that requires forestry area in Indonesia. Most of coal mining concession are forestry area loan use from the government and during mining operation facing with acid mine drainage (AMD). AMD passive treatment can be integrated with revegetation process that related with better handling of overburden (OB) with potential acid forming (PAF) during reclamation processed. The most expensive methods and uncertainty process are the use of quick lime in treatment of AMD. During operation and preparing mine closure stage need to create the effective one to comply with the regulation. “Swampy Forest (SF) system” is an alternative method of sustainable and naturally process. Selecting the appropriate tree species as a preliminary process to develop a better SF system by batch experiment in the form of a forest constructed wetland. The tree species selected are Nauclea orientalis (lonkida tree) and Melaleuca cajuputi (kayuputih tree) as non-local species then Nauclea subdita (bangkal tree) and Melaleuca leucadendron (galam tree) as local species have been selected. Local species higher in Fe and Mn adsorption in pH of AMD <4 then nonlocal species higher in Fe and Mn adsorption on pH of AMD >4 condition.

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“…The most common species in rhizosphere belong to genera Methylophilus, Methylovorus, Methylobacterium sp., Methylobacterium soli, Methylobacterium goesingense, Methylobacterium variabile, Methylobacterium suomiense, Methylopila helvetica, Methylobacterium thiocyanatum, Methylopilacapsulata and Methylobacterium aminovorans [1,17]. From soil samples, M. aminovorans TH-1, M. goesingense iEII3, M. soli YIM 48816T, M. suomiense, F20T, M. thiocyanatum, M. variabile GR3T, M. capsulata IM1T, and M. helvetica VKMB-189 are also recovered [16].…”

Section: 2 | Rhizospherementioning

confidence: 99%

“…PPFMs are highly abundant in both soil and phyllosphere region of plants and certain species dominate leaf surfaces are well identified (Table 1). To date trait methylotrophy is reported to span in seven families encompassing 15 genera (Figure 2) [17]. They improve both plant performance and also show plant protective characteristics.…”

Section: Introductionmentioning

confidence: 99%

Prospect of pink pigmented facultative methylotrophs in mitigating abiotic stress and climate change

et al. 2022

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Apparently, climate change is observed in form of increased greenhouse gases (CH 4 , CO 2 , N 2 O, CFC), temperature (0.5-1°C), and UV radiations (UV B and UV C). It is affecting every aspect of ecosystem functioning; however, terrestrial crops are the most vulnerable group and crop productivity largely remains a challenge. Due to climate change, seed yield and nutrient depletion are inevitable in future scenarios. To overcome this problem microbial groups that exhibit plant growth promoting attributes and provide protection against environmental stress should be studied. One such group is the pink pigmented facultative methylotrophs (PPFMs) that can induce overall fitness to plants.PPFMs are involved in phosphorous mineralization, siderophore, ACC deaminase, phytohormone production, and assimilation of greenhouse gases. Additionally, these organisms can also resist harmful UV radiations effectively as they possess polyketide synthases that could serve as source of novel bioactives that can protect plant from abiotic stress. The review article comprehensively highlights the multifunctional traits of PPFMs and their role in mitigating climate change with an aim to use this important organism as microbial inoculants for sustainable agriculture under climate-changing scenarios.climate change, greenhouse gases, phyllosphere, pink pigmented facultative methylotrophs, terrestrial crops | INTRODUCTIONMethylotrophs belong to diverse classes of α, β, and γ proteobacteria group, they are gram-negative, rodshaped, strict aerobic microbes. Methylotrophy is also exhibited by members of Verrucomicrobia, Firmicutes, Flavobacterium, and Actinobacteria [1]. A small group of methylotrophs encompassing 51 species appear pink in color due to carotenoid pigments and are often referred as pink pigmented facultative methylotrophs (PPFMs) (http://www.bacterio.net/methylobacterium.html). Methylorubrum extorquens is the best-studied member of

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Heavy metals accumulation in crop plants: Sources, response mechanisms, stress tolerance and their effects

Cited by 32 publications

References 52 publications

Accumulation of heavy metals and minerals in soil rhizosphere and organs of Parkia biglobosa and Butryospermum paradoxum growing at the lead polluted site in Niger State, Nigeria

Accumulation of heavy metals and minerals in soil rhizosphere and organs of Parkia biglobosa and Butryospermum paradoxum growing at the lead polluted site in Niger State, Nigeria

Role of the Tree Species Selected in Developing Swampy Forest System for Passive Treatment of Acid Mine Drainage

Prospect of pink pigmented facultative methylotrophs in mitigating abiotic stress and climate change

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