Decolourisation and degradation of azo dyes by mixed fungal culture consisted of Dichotomomyces cejpii MRCH 1-2 and Phoma tropica MRCH 1-3

Krishnamoorthy, Rajagopal; Jose, Polpass Arul; Ranjith, M.; Anandham, Rangasamy; Suganya, K.; Prabhakaran, James; Thiyageshwari, S.; Johnson, Jijo; Gopal, N. O.; Kumutha, K.

doi:10.1016/j.jece.2017.12.035

Cited by 61 publications

(12 citation statements)

References 24 publications

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“…Sphingomonas has genes for several azoreductases and has performed both successful dye degradation and mineralization of metabolites [ 46 ]. There were many less microbial communities present before bioaugmentation due to the presence of high concentrated azo compounds in the wastewater [ 18 ]. This might have resulted in the decrease of microbial populations and subsequently reducing enzyme activities [ 47 ].…”

Section: Resultsmentioning

confidence: 99%

“…However, there have been no studies on high-throughput detection of microbial community profiles of environmental samples such as dye wastewater which have been severely affected by long-term exposure to improper discharge. Guo et al (2013) and Krishnamoorthy et al (2021) [ 17 , 18 ] used a metagenomic approach to unravel the community diversity and functional profiles within activated sludge from a full-scale SNPR WWTP and found that various key enzymes involved in metabolisms degrading various chemicals could be annotated in different treatments. However, it was hard to distinguish the effects of each divergent variable on microbial community in a full-scale dye wastewater treatment plant since a lot of uncontrollable or even undetectable influential factors were involved in such a pollutant-removing process [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

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Metagenomic Insight of a Full Scale Eco-Friendly Treatment System of Textile Dye Wastewater Using Bioaugmentation of the Composite Culture CES-1

et al. 2021

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Effects of bioaugmentation of the composite microbial culture CES-1 on a full scale textile dye wastewater treatment process were investigated in terms of water quality, sludge reduction, dynamics of microbial community structures and their functional genes responsible for degradation of azo dye, and other chemicals. The removal efficiencies for Chemical Oxygen Demand (COD), Total Nitrogen (T-N), Total Phosphorus (T-P), Suspended Solids (SS), and color intensity (96.4%, 78.4, 83.1, 84.4, and 92.0, respectively) 300–531 days after the augmentation were generally improved after bioaugmentation. The denitrification linked to T-N removal appeared to contribute to the concomitant COD removal that triggered a reduction of sludge (up to 22%) in the same period of augmentation. Azo dye and aromatic compound degradation and other downstream pathways were highly metabolically interrelated. Augmentation of CES-1 increased microbial diversity in the later stages of augmentation when a strong microbial community selection of Acinetobacterparvus, Acinetobacterjohnsonii, Marinobacter manganoxydans, Verminephrobacter sp., and Arcobacter sp. occurred. Herein, there might be a possibility that the CES-1 augmentation could facilitate the indigenous microbial community successions so that the selected communities made the augmentation successful. The metagenomic analysis turned out to be a reasonable and powerful tool to provide with new insights and useful biomarkers for the complex environmental conditions, such as the full scale dye wastewater treatment system undergoing bioaugmentation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metagenomic Insight of a Full Scale Eco-Friendly Treatment System of Textile Dye Wastewater Using Bioaugmentation of the Composite Culture CES-1

et al. 2021

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“…The coculture of Pleurotus-Trametes promoted the greatest decolorization of azo dye RB220 and the anthraquinone dye RBBR among all cultivations. Krishnamoorthy et al (2018) isolated fungi and bacteria from soil contaminated with azo dyes and reported that the coculture of two ascomycetes, Dichotomomyces cejpii (current name Aspergillus cejpii) and Phoma tropica (current name Allophoma tropica), produced the greatest decolorization rates of azo dyes assessed during four days (12 to 73%). On the other hand, Przystaś et al (2013) reported the low efficiency of P. ostreatus and Gloeophyllum odoratum cocultures to decolorize the azo dye Evans blue and the triphenylmethane dye brilliant green.…”

Section: Discussionmentioning

confidence: 99%

Coculture of white rot fungi enhance laccase activity and its dye decolorization capacity

Avelino

Halabura

Marim

et al. 2020

RSD

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Fungal cocultures can promote complex interactions that result in physiological and biochemical alterations that favor the synergic and more efficient action of extracellular enzymes such as laccase. Thus, coculture can be used as a strategy to increase enzymatic activity, dye degradation, and bioremediation of textile effluents. This study aimed to evaluate the coculture effect of Lentinus crinitus, Pleurotus ostreatus, Pycnoporus sanguineus, and Trametes polyzona on laccase activity, mycelial biomass production, and in vitro decolorization of azo, anthraquinone, and triphenylmethane dyes. The species were cultivated in liquid medium in monoculture and coculture in paired combinations for 15 days to determine the laccase activity and produced mycelial biomass. The enzymatic extracts of fungal cultivations were used in decolorization tests of reactive blue 220 (RB220), malachite green (MG), and remazol brilliant blue R (RBBR). Pleurotus-Trametes, Lentinus-Pleurotus, and Lentinus-Trametes cocultures increase laccase activity compared to respective monocultures. Lentinus-Pycnoporus, Lentinus-Trametes, Lentinus-Pleurotus, and Pleurotus-Trametes cocultures stimulate mycelial biomass production in relation to their respective monocultures. The enzymatic extracts of monocultures and cocultures promoted the decolorization of all dyes. RB220 dye presented fast decolorization. In 24 h, all extracts reached maximum decolorization and the greatest color reduction percentage was 90% for Pleurotus-Trametes coculture extract. Pleurotus-Trametes extract also increased the decolorization of MG and RBBR dyes when compared to their respective monocultures in 48 h and 72 h, respectively. However, RBBR dye presented the greatest resistance to decolorization.

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“…Gas chromatography-mass spectrometry was used to identify the chemical compounds in Streptomyces extracts according to a previous method with a slight modification ( Krishnamoorthy et al, 2018 ). Briefly, GC-MS was performed on a Shimadzu GC 2010 plus with a triple quadrupole mass spectrometer (TP-8030), which was fitted with a DB-5 ms (5% phenyl methylsiloxane) capillary column of dimensions 30 m × 0.25 mm × 0.25 μm.…”

Section: Methodsmentioning

confidence: 99%

Newly Isolated Streptomyces sp. JBS5-6 as a Potential Biocontrol Agent to Control Banana Fusarium Wilt: Genome Sequencing and Secondary Metabolite Cluster Profiles

et al. 2020

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Banana is a key staple food and fruit in countries all over the world. However, the development of the global banana industry is seriously threatened by Fusarium wilt disease, which is caused by Fusarium oxysporum f. sp. cubense (Foc). In particular, Foc tropical race 4 (Foc TR4) could infect more than 80% of global banana and plantain crops. Until now, there were no commercial chemicals or resistant cultivars available to control the disease. Biological control using actinomycetes is considered a promising strategy. In this study, 88 actinomycetes were isolated from a banana orchard without symptoms of Fusarium wilt disease for more than 10 years. An actinobacterial strain labeled as JBS5-6 has exhibited strong antifungal activities against Foc TR4 and other selected 10 phytopathogenic fungi. Based on phenotypic and biochemical traits as well as complete genome analysis, strain JBS5-6 was assigned to Streptomyces violaceusniger. Extracts of the strain inhibited the mycelial growth and spore germination of Foc TR4 by destroying membrane integrity and the ultrastructure of cells. The complete genome of strain JBS5-6 was sequenced and revealed a number of key function gene clusters that contribute to the biosynthesis of active secondary metabolites. Sixteen chemical compounds were further identified by gas chromatography-mass spectrometry (GC-MS). 5-hydroxymethyl-2-furancarboxaldehyde was one of the dominant components in strain JBS5-6 extracts. Moreover, fermentation broth of strain JBS5-6 significantly reduced the disease index of banana seedlings by inhibiting the infection of Foc TR4 in a pot experiment. Hence, strain JBS5-6 is a potential biocontrol agent for the management of disease and the exploitation of biofertilizer.

show abstract

Decolourisation and degradation of azo dyes by mixed fungal culture consisted of Dichotomomyces cejpii MRCH 1-2 and Phoma tropica MRCH 1-3

Cited by 61 publications

References 24 publications

Metagenomic Insight of a Full Scale Eco-Friendly Treatment System of Textile Dye Wastewater Using Bioaugmentation of the Composite Culture CES-1

Metagenomic Insight of a Full Scale Eco-Friendly Treatment System of Textile Dye Wastewater Using Bioaugmentation of the Composite Culture CES-1

Coculture of white rot fungi enhance laccase activity and its dye decolorization capacity

Newly Isolated Streptomyces sp. JBS5-6 as a Potential Biocontrol Agent to Control Banana Fusarium Wilt: Genome Sequencing and Secondary Metabolite Cluster Profiles

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