Plant bioindicators of pollution in Sadat City, Western Nile Delta, Egypt

Azzazy, Mohamed

doi:10.1371/journal.pone.0226315

Cited by 30 publications

(18 citation statements)

References 46 publications

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“…Plants have been widely recognized as effective means of entrapping airborne pollutants. Hence, they can be used for monitoring air quality and for phytoremediation (Azzazy, 2020). Trees survive better than lower plants in urban areas due to their tougher physiognomy (Rai, 2016) and it is imperative to understand how they react to air pollution and develop adaptive strategies.…”

Section: Discussionmentioning

confidence: 99%

“…(2021) in localities with high pollution caused by NO and SO 2 , probably because other molecules (ascorbic acid, tocopherol, or proline) keep the antioxidant system active. Vehicular pollution led to increased levels of flavonoids in the leaves of Bougainvillea (Azzazy, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…An increase in levels of flavonoids in the buds of birch, oak, and maple was also reported by Kovalikova et al (2021) in localities with high pollution caused by NO and SO 2 , probably because other molecules (ascorbic acid, tocopherol, or proline) keep the antioxidant system active. Vehicular pollution led to increased levels of flavonoids in the leaves of Bougainvillea (Azzazy, 2020). Robles et al (2003) showed that flavonoids increased in Aleppo pine needles with higher levels of O 3 and decreased when SO 2 was more in the air.…”

Section: Air Pollution Like Other Stresses (Biotic and Abiotic) Resul...mentioning

confidence: 99%

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Effect of air pollution on plant secondary metabolites in selected trees of Delhi

Lahiri,

Krishna

2023

Environmental Quality Mgmt

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Air pollution is emerging as one of the most important stresses, particularly in urban areas, of both developed and developing countries. It severely affects plant growth and development besides being a health hazard to humans and animals. Delhi has the dubious distinction of being one of the most polluted cities in the world. Incidentally, it is also one of the greenest cities with ongoing programs to increase the already considerable forest cover and biodiversity parks. Plants often act as a sink for airborne pollutants, including particulate matter. Hence it is important to evaluate their efficacy in absorbing pollutants and use the promising species for urban plantation. In the present study, the stress tolerance of four common trees of Delhi (Psidium guajava, Alstonia scholaris, Murraya koenigii, and Moringa oleifera), growing in three areas with varying pollution levels, was estimated by measuring Plant Secondary Metabolites (PSMs: total phenols, flavonoids, alkaloids, and tannins) along with the total chlorophyll content of the leaves. P. guajava showed significant increase in the contents of phenols, tannins, and alkaloids with higher Air Quality Index (AQI). Increased amounts of phenols and flavonoids were observed in A. scholaris, those of phenols and alkaloids in M. koenigii, and only of alkaloids in M. oleifera. There was a decrease in the total chlorophyll content of the leaves of all four species investigated. P. guajava and A. scholaris can be recommended for plantation along the sides of roads with heavy traffic movement. Since PSMs are seen to accumulate as a defense mechanism against air pollution too, as in various abiotic and biotic stresses, they can be used as biomarkers for stress tolerance in plants.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Air Pollution Like Other Stresses (Biotic and Abiotic) Resul...mentioning

confidence: 99%

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Effect of air pollution on plant secondary metabolites in selected trees of Delhi

Lahiri,

Krishna

2023

Environmental Quality Mgmt

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“…The use of bioindicators with plant seeds over the years has been one of the scientific techniques reported for the determination of cytotoxicity, proving to be an instrument of high sensitivity and easy handling (Mendoza and Salazar 2022 ; Mercado and Caleño 2021 ; García-Medina et al 2020 ; Azzazy 2020 ; Leston et al 2013 ; Nikitaki et al 2018 ; Kummerová et al 2013 ). This is how plant species have been used for the identification of cytological changes caused by multiple chemical agents such as Allium cepa , Lens culinaris , and Pisum sativum Salazar and Quintero Caleño ( 2020 ), also recommended for their economic and practical efficiency, considering that the increasing production, the use of this drug, its environmental presence, and the hazardous impact on aquatic organisms and other non-target individuals could increase rapidly.…”

Section: Introductionmentioning

confidence: 99%

Paracetamol ecotoxicological bioassay using the bioindicators Lens culinaris Med. and Pisum sativum L

Mercado

Galvis

2023

Environ Sci Pollut Res

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Paracetamol is one of the most widely used drugs worldwide, yet its environmental presence and hazardous impact on non-target organisms could rapidly increase. In this study, the possible cytotoxic effects of paracetamol were evaluated using two bioindicator plants Lens culinaris and Pisum sativum . Concentrations of 500, 400, 300, 200, 100, 50, 25, 5, 1 mg L −1 , and a control (distilled water) were used for a total of 10 treatments, which were subsequently applied on seeds of Lens culinaris Med . and Pisum sativum L. ; after 72 h of exposure, root growth, mitotic index, percentage of chromosomal abnormalities, and the presence of micronucleus were evaluated. The cytotoxic effect of paracetamol on L. culinaris and P. sativum was demonstrated, reporting the inhibition of root growth, the presence of abnormalities, and a significant micronucleus index at all concentrations used, which shows that this drug has a high degree of toxicity.

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“…Plastic film is widely used in ecological restoration, such as desert control, saline alkali land improvement, and slope greening protection. Most mulching films commonly used in production are man-made materials that include many chemicals with high costs and environmental pollution potential [ 1 ]. Naturally weathered red-bed soil is a widely available material.…”

Section: Introductionmentioning

confidence: 99%

Study on the properties of mud films derived from naturally weathered red-bed soil under pressureless conditions

Gao

Liu²,

Zhou³

2022

PLoS ONE

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Mulching film is an important material in ecological restoration, such as desert control, saline alkali land improvement, and slope greening protection. At present, both solid and liquid mulching films are mainly made of man-made materials, which have a great impact on the ecological environment and are expensive. Naturally weathered red-bed soil mud films are being applied in the construction industry because of their advantages of environmental friendliness and low cost. However, at present, film formation needs to occur under pressure, in complex processes, which results in great application limitations, so it is difficult to popularize and apply these natural mud films to the field of ecological restoration. Therefore, exploring high-quality film formation under pressureless conditions is key for the application of naturally weathered red-bed soil mud films in the field of ecological restoration. To solve this problem, this paper takes naturally weathered red-bed soil, without additives; designs and carries out mud film-forming tests of naturally weathered red-bed soil and a comparison test with bentonite under pressureless conditions; tests the influence of mud particle gradation, viscosity and moisture content on the film-forming effect; optimizes the mud film-forming ratio; and further studies the thickness, water resistance, compression resistance. Acid and alkali resistances are tested and compared with international standards. The results show that the naturally weathered red-bed soil can form a mud film under pressureless conditions. The optimal (high-quality) film corresponds to a mud viscosity of 29.6–52.6 Pa·s, water content of 15–35%, and content of particles with particle sizes smaller than 1 mm of 75%-85%. Compared with international standards and bentonite, the naturally weathered red-bed soil mud film meets the ecological restoration standard, has a better water resistance, compression resistance, and acid and alkali resistances than bentonite mud film, and has the advantages of a wide distribution, low cost, simple sample preparation and wide application range. Therefore, weathered red-bed soil mud film is a film technology with obvious comparative advantages that can be introduced into the field of ecological restoration and has broad prospects.

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Plant bioindicators of pollution in Sadat City, Western Nile Delta, Egypt

Cited by 30 publications

References 46 publications

Effect of air pollution on plant secondary metabolites in selected trees of Delhi

Effect of air pollution on plant secondary metabolites in selected trees of Delhi

Paracetamol ecotoxicological bioassay using the bioindicators Lens culinaris Med. and Pisum sativum L

Study on the properties of mud films derived from naturally weathered red-bed soil under pressureless conditions

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