Effect of heavy metals on cultural and morphological growth characteristics of halotolerant <i>Penicillium </i> morphotypes

Nazareth, S.W.; Marbaniang, T.

doi:10.1002/jobm.200800006

Cited by 24 publications

(12 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fungi under stress develop several mechanisms in order to tolerate adverse conditions. They develop adaptation through a temporary alteration in their developmental patterns or by modifications on physiological characteristics, depending on the toxicity of the metals, which in turn is influenced by the concentration and by the salt form in which the metal exists [ 24 ].…”

Section: Heavy Metalsmentioning

confidence: 99%

“…Recently, four halotolerant Penicillium were isolated from mangroves and salterns, selected on the basis of the variations in morphology of the penicillial heads and by their resistance to lead, copper and cadmium salts [ 24 ]. It was reported that all four isolates could resist Pb(II) at a concentration of 7.5 mM, with no decrease in growth up to 5 mM and with minimal changes in growth pattern and morphology compared to that of Cu(II) and Cd(II).…”

Section: Heavy Metalsmentioning

confidence: 99%

“…Cadmium response stresses were different dependent on strain and salt assayed. The cultures grown in presence of metals showed striking variations in colony appearance, morphology, sporulation and in pigment production as compared to the controls; these changes were more pronounced with increasing metal concentrations [ 24 ].…”

Section: Heavy Metalsmentioning

confidence: 99%

See 2 more Smart Citations

Potential of Penicillium Species in the Bioremediation Field

Leitão

2009

IJERPH

209

View full text Add to dashboard Cite

Abstract:The effects on the environment of pollution, particularly that caused by various industrial activities, have been responsible for the accelerated fluxes of organic and inorganic matter in the ecosphere. Xenobiotics such as phenol, phenolic compounds, polycyclic aromatic hydrocarbons (PAHs), and heavy metals, even at low concentrations, can be toxic to humans and other forms of life. Many of the remediation technologies currently being used for contaminated soil and water involve not only physical and chemical treatment, but also biological processes, where microbial activity is the responsible for pollutant removal and/or recovery. Fungi are present in aquatic sediments, terrestrial habitats and water surfaces and play a significant part in natural remediation of metal and aromatic compounds. Fungi also have advantages over bacteria since fungal hyphae can penetrate contaminated soil, reaching not only heavy metals but also xenobiotic compounds. Despite of the abundance of such fungi in wastes, penicillia in particular have received little attention in bioremediation and biodegradation studies. Additionally, several studies conducted with different strains of imperfecti fungi, Penicillium spp. have demonstrated their ability to degrade different xenobiotic compounds with low co-substrate requirements, and could be potentially interesting for the development of economically feasible processes for pollutant transformation.

show abstract

Section: Heavy Metalsmentioning

confidence: 99%

Section: Heavy Metalsmentioning

confidence: 99%

See 1 more Smart Citation

Potential of Penicillium Species in the Bioremediation Field

Leitão

2009

IJERPH

209

View full text Add to dashboard Cite

show abstract

“…The decrease in the COD points to the reduction of biologically oxidable and inert organic materials as a result of their degradation by the fungus [56]. This shows that, even under such stressful conditions and the nonsterile conditions (existence of native microorganisms), A. niger was able to develop various mechanisms in order to cope with the adverse conditions [57]. Nearby, COD removal was clearly influenced by the pH and the composition of the effluent used.…”

Section: Resultsmentioning

confidence: 99%

Detoxification Assays of Tunisian Tannery Wastewater under Nonsterile Conditions Using the Filamentous Fungus Aspergillus niger

Boujelben

Ellouze

Sayadi

2019

BioMed Research International

View full text Add to dashboard Cite

The ability of Aspergillus niger strain to reduce organic and mineral pollution as well as the toxicity of two tannery wastewaters, the unhairing effluent (UE) and the final effluent (FE), taken from a local Tunisian tannery and under nonsterile conditions, was studied. Raw effluents show alkaline pH ≥11; thus experiments were carried out at initial pH values and at pH adjusted to 6. Characterization of effluents also revealed high salt levels (EC > 17 mS/cm) and high organic matter content (25 g/L for the UE and 7.2 g/L for the FE) but a low biodegradability since BOD5 did not exceed 2.5 and 1.25 g/L for the UE and the FE, respectively. The results of the biological treatment showed that A. niger was able not only to grow at high pH and salinity values, but also to reduce organic and mineral pollutant load. After treatment, the COD reduction for the UE reached 90% and 70% at pH=6 and at initial pH (12.13), respectively. For the FE, the decrease of COD values reached 75% at pH=6 and 64% at initial pH (11.64). Monitoring of mineral pollution levels showed a reduction in chromium (Cr) concentrations reaching 70% for the FE. This was reflected by an increase of the biomass of A. niger from 9.25 g/L (control) to 9.84 g/L for the FE. To confirm the efficiency of the biological treatment using A. niger, phytotoxicity (tomato seeds) and microtoxicity (Escherichia coli and Bacillus subtilis) tests were carried out. Results of this monitoring showed an important decrease in the toxicity levels for both effluents.

show abstract

“…In our experiments, the Hg exhibited a relatively slight tolerance to the fruit body height (from 9.6 cm to 0.8 cm). Impaired growing ability for fruit body C. militaris may be owing to the bulging of the cells due to insufficient chitin formation; the inability of the cultures to grow beyond the germination stage, particularly in presence of higher concentrations of heavy metals, could be due to the inhibition of chitin synthesis as seen in the case of Penicillium [33]. The chitin biosynthesis is induced as a response mechanism of the fungal cell of Aspergillus niger, Fusarium oxysporum and Penicillium chrysogenum to stress, thus making it more resistant to heavy metals, as reported [34].…”

Section: Effect Of Heavy Metals On the Fruit Body Growthmentioning

confidence: 97%

Effects of light and heavy metals on Cordyceps militaris fruit body growth in rice grain-based cultivation

Chen

Liu

Chang

2011

Korean J. Chem. Eng.

View full text Add to dashboard Cite

The objective of this study was to examine the light and heavy metals on the fruit body growth of Cordyceps militaris in the rice-based cultivation. Since heavy metals are commonly detected in the paddy field, we investigated the effect of lead, cadmium and mercury on the rice grain-based cultivation of C. militaris. Cordycepin and cordycepic acid were determined by HPLC method. The result showed that the best fruit body growth and bioactive complements was obtained in rice I under 12 h light/dark cycle conditions. The effects of heavy metals (Pb, Hg, and Cd) to the fruit body were remarkable-the inhibition carried a dose-dependent behavior.

show abstract

Effect of heavy metals on cultural and morphological growth characteristics of halotolerant Penicillium morphotypes

Cited by 24 publications

References 22 publications

Potential of Penicillium Species in the Bioremediation Field

Potential of Penicillium Species in the Bioremediation Field

Detoxification Assays of Tunisian Tannery Wastewater under Nonsterile Conditions Using the Filamentous Fungus Aspergillus niger

Effects of light and heavy metals on Cordyceps militaris fruit body growth in rice grain-based cultivation

Contact Info

Product

Resources

About