Synergistic mycoflora–natural farming mediated biofertilization and heavy metals decontamination of lithospheric compartment in a sustainable mode via Helianthus annuus

Iftikhar, Shazia; Saleem, Muhammad; Ahmad, Khuram Shahzad; Jaffri, Shaan Bibi

doi:10.1007/s13762-018-02180-8

Cited by 14 publications

(8 citation statements)

References 32 publications

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“…Biochar, however, can improve the stability of Cd, alleviate Cd-induced stress for plants, and enhance fertility to promote the growth and development of plants 40 . Biofertilizer is comprised of a large number of living bacteria and nutrient elements, and has a significant positive effect on the ecological environment of soil and the growth and development of crops 41,42 . Recently, biofertilizer has been widely reported as a biosorption agent for heavy metals in soil 42,43 .…”

Section: Discussionmentioning

confidence: 99%

“…Biofertilizer is comprised of a large number of living bacteria and nutrient elements, and has a significant positive effect on the ecological environment of soil and the growth and development of crops 41,42 . Recently, biofertilizer has been widely reported as a biosorption agent for heavy metals in soil 42,43 . In this study, the addition of exogenous Cd decreased the dry weight of cotton, at the highest dose of exogenous Cd (4 m•kg −1 ), the total dry weight of cotton was the lowest (60.63 g).…”

Section: Discussionmentioning

confidence: 99%

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Effects of biochar and biofertilizer on cadmium-contaminated cotton growth and the antioxidative defense system

Zhu

Wang

et al. 2020

Sci Rep

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Consistent use of large amounts of fertilizers, pesticides, and mulch can cause the accumulation of harmful substances in cotton plants. Among these harmful substances, cadmium (Cd), an undegradable element, stands out as being particularly highly toxic to plants. The objective of this study was to evaluate the ability of biochar (3%) and biofertilizer (1.5%) to decrease Cd uptake, increase cotton dry weight, and modulate the activities of photosynthetic and peroxidase (POD), superoxide dismutase (SOD), catalase enzyme (CAT) in cotton (Gossypium hirsutum L.) grown in Cd-contaminated soil (0, 1, 2, or 4 mg Cd kg−1 soil) in pots. These studies showed that, as expected, exogenous Cd adversely affects cotton chlorophyll and photosynthesis. However, biochar and biofertilizer increased cotton dry weight by an average of 16.82% and 32.62%, respectively. Meanwhile, biochar and biofertilizer decreased the accumulation of Cd in cotton organs, and there was a significant reduction in the amount of Cd in bolls (P < 0.05). Biochar and biofertilizer have a positive impact on cotton chlorophyll content, net photosynthesis, stomatal conductance, transpiration rate, and intercellular CO2 concentration. Thus, the addition of biochar and biofertilizer promote cotton growth. However, biochar and biofertilizer increased the SOD activity of leaves (47.70% and 77.21%), CAT activity of leaves (35.40% and 72.82%), SOD activity of roots (33.62% and 39.37%), and CAT activity of roots (36.91% and 60.29%), respectively, and the addition of biochar and biofertilizer decreased the content of MDA and electrolyte leakage rate. Redundancy analyses showed that biochar and biofertilizer also improved SOD and POD activities by reducing the heavy metal-induced oxidative stress in cotton and reducing Cd uptake in cotton organs. Therefore, biochar and biofertilizer have a positive effect on the growth of cotton.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effects of biochar and biofertilizer on cadmium-contaminated cotton growth and the antioxidative defense system

Zhu

Wang

et al. 2020

Sci Rep

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“…Besides, biochar could accelerate the dissolution of most salts in the soil (Bandara et al 2017), resulting in the increase of soil EC (Yang et al 2016). The increase of soil EC after the application of biofertilizer may be due to the change in total dissolved solids (TDS) concentration and the interaction of biofertilizer with inorganic and organic ions in the soil (Iftikhar et al 2019). Moreover, El-Kherbawy et al (1989 have showed that the concentration of available heavy metals in the soil with pH greater than 7.2 was lower than that in the acid soil, indicating that a high soil pH could positively impact Cd xation, and soil pH could increase after the application of biochar .…”

Section: Discussionmentioning

confidence: 99%

Effects of modifiers on soil enzyme activity and microbial community diversity in cadmium-contaminated farmland soil

Zhu

Tian

Wang

et al. 2021

Preprint

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Cadmium (Cd) contamination, with great toxicity, seriously threatens soil environment. In this study, the effects of biochar and biofertilizer used as modifiers on the biochemical properties, enzyme activity, and microbial diversity in Cd-contaminated soils (1, 2, and 4 mg·kg− 1) were investigated. The results showed that the soil C/N ratio and electrical conductance could be increased by biochar and biofertilizer (P < 0.05). The soil pH in the biochar and biofertilizer treatments increased by 0.99 and 0.95, respectively, and the soil available Cd concentration decreased by 60.24% and 74.34% (P < 0.05), respectively, compared with those in the control group. The increase of soil alkaline phosphatase activity was observed in the biochar treatment (P < 0.05), and the increases of the activities of soil invertase, alkaline phosphatase, catalase, and urease were observed in the biofertilizer treatment (P < 0.05). The relative abundances of Acidobacteria, Gemmatimonadetes, and Proteobacteria were increased and the soil microbial community structure was improved in the biochar and biofertilizer treatments. Redundancy analysis (RDA) and structural equation model (SEM) showed that soil available Cd concentration had negative effects on soil pH, C/N ratio, urease and alkaline phosphatase activity, and relative abundances of Acidobacteria and Proteobacteria. The increase of soil urease activity was the main reason for the increase of soil microbial diversity. In summary, the applications of biochar and biofertilizer could decrease soil available Cd concentration, increase soil microbial community diversity, and reduce the damage of Cd stress.

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“…Como os fertilizantes são meios químicos de dispersão de metais pesados, a substituição destes produtos por outros advindos de técnicas de compostagem natural e adubação orgânica devem ser sempre encorajados. A utilização de biofertilizantes, baseado em insumos agrícolas naturais, pode melhorar parâmetros morfológicos da planta e remediar a descontaminação de solos por metais pesados (Iftikhar et al, 2019).…”

Section: Técnicas De Cultivo Agroecológicasunclassified

Agricultura em Áreas Industriais e Contaminação por Metais Pesados: Estratégias para redução deste Impacto Ambiental

Sousa

Santos

et al. 2021

Rev. Bras. Geog. Fis.

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Concentrações elevadas de metais pesados podem ocorrer em áreas próximas de complexos industriais e em solos ao redor das áreas de mineração, o que pode se estender para alimentos agrícolas, causando efeitos adversos na saúde da população, danos ecológicos, além de implicar em bioacumulação. Devido à facilidade de dispersão dos metais pesados no meio ambiente, especialmente na agricultura que adentra à cadeia alimentar, o objetivo desse estudo foi revisar dados sobre esta contaminação em vegetais cultivados em áreas industriais e identificar possíveis estratégias para minimizar o impacto ambiental. Vários estudos apontam que solos e vegetais cultivados próximos de áreas industriais apresentam elevadas concentrações de metais pesados, sendo ainda maior proporcionalmente à proximidade da área poluente. Dentre os tipos de vegetais, os folhosos foram os que apresentaram maior teor de contaminação de metais do que os vegetais frutados ou de raiz, o que aponta que, além do solo, a contaminação atmosférica influencia no vegetal exposto. Além disto, existe correlação entre espécie vegetal e biodisponibilidade/absorção de determinados metais em detrimento a outros. É notório que o cultivo de produtos agrícolas em áreas industriais e circunvizinhas é uma prática que põe em risco potencial de toxicidade a população que utiliza estes produtos como alimento. Algumas estratégias podem ser adotadas com intuito de minimizar a contaminação, dentre estas, técnicas naturais de manejo de cultivo de vegetais, seleção de tipos de vegetais com menor possibilidade de toxicidade para áreas específicas, técnicas para aumentar fatores de proteção do vegetal e descontaminação do solo, controle e fiscalização efetivos nos efluentes industriais. Agriculture in Industrial Areasand Heavy Metal Contamination: Strategies to reduce this Environmental Impact A B S T R A C TContamination by heavy metals can occur in locations close to industrial complexes and in soils around mining areas, which can extend to agricultural foods, causing adverse effects on the population's health, ecological damage, in addition to resulting in bioaccumulation. Heavy metals are rapidly dispersed in the environment, especially in agriculture that enters the food chain. Thus, the objective of this study was to review this contamination in vegetables grown in industrial areas and to identify possible strategies to minimize the socio-environmental impact. Many studies show that soils and vegetables cultivated close to industrial areas have high concentrations of heavy metals, being even greater in proportion to the proximity of the polluting area. Among the types of vegetables, the leafy ones were those that had a higher content of metal contamination than fruity or root vegetables, which indicates that, in addition to the soil, atmospheric contamination influences the exposed plant. In addition, there is a correlation between plant species and bioavailability of certain specific metals. The cultivation of agricultural products in industrial and surrounding areas is a practice that poses a potential risk of toxicity to the population that consumes these products as food. Some strategies can be adopted in order to minimize contamination, among them, natural techniques for handling vegetable cultivation, selection of types of vegetables with less possibility of toxicity for specific areas, techniques to increase plant protection factors and soil decontamination, effective control and inspection in industrial effluentsKeywords: heavy metals; soil contamination; industrial areas, agriculture, agroecology.

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Synergistic mycoflora–natural farming mediated biofertilization and heavy metals decontamination of lithospheric compartment in a sustainable mode via Helianthus annuus

Cited by 14 publications

References 32 publications

Effects of biochar and biofertilizer on cadmium-contaminated cotton growth and the antioxidative defense system

Effects of biochar and biofertilizer on cadmium-contaminated cotton growth and the antioxidative defense system

Effects of modifiers on soil enzyme activity and microbial community diversity in cadmium-contaminated farmland soil

Agricultura em Áreas Industriais e Contaminação por Metais Pesados: Estratégias para redução deste Impacto Ambiental

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