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Souza CR, Teixeira MFNP, Morais PB. Diversity of cellulolytic and xylanolytic fungi associated with the digestive tract of aquatic insect larvae in streams of the Amazon Forest and Cerrado in Brazil. BRAZ J BIOL 2022; 82:e265681. [PMID: 36134871 DOI: 10.1590/1519-6984.265681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 08/25/2022] [Indexed: 11/22/2022] Open
Abstract
The study of the relationship between fungi and insects brings important contributions to the knowledge of fungal biodiversity and to the understanding of mutualistic ecological interactions. This study reports the occurrence of a community of filamentous fungi in the digestive tract (DT) of mining insect larvae belonging to genus Stenochironomus in streams of two Brazilian biomes. Fungi were obtained from the digestive tract of larvae found on trunks and leaves of low-order streams in the Amazon Forest and Cerrado in the north of Brazil. The fungal community was screened for xylanolytic and cellulolytic activities. The diversity of fungal species in the DT of larvae is possibly related to the diversity of diets of species of that genus and the diversity of substrates in the ecosystems. The diversity and richness of fungal species were influenced by ecological differences between locations more than by the types of substrates in which they were collected (trunk and leaf). Most fungi in the DT of Stenochironomus larvae sampled in leaves exhibited cellulolytic enzyme activity. Such results stress that the mycobiomes of the DT of Stenochiromonus larvae produce enzymes that contribute to the process of breaking down plant remains in their hosts.
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Affiliation(s)
- C R Souza
- Universidade Federal do Tocantins, Programa de Doutorado em Biodiversidade e Biotecnologia, Laboratório de Microbiologia Ambiental e Biotecnologia e Coleção de Culturas Microbianas Carlos Rosa, Palmas, TO, Brasil.,Instituto Federal de Educação, Ciência e Tecnologia do Tocantins, Gurupi, TO, Brasil
| | - M F N P Teixeira
- Universidade Federal do Tocantins, Programa de Doutorado em Biodiversidade e Biotecnologia, Laboratório de Microbiologia Ambiental e Biotecnologia e Coleção de Culturas Microbianas Carlos Rosa, Palmas, TO, Brasil
| | - P B Morais
- Universidade Federal do Tocantins, Programa de Doutorado em Biodiversidade e Biotecnologia, Laboratório de Microbiologia Ambiental e Biotecnologia e Coleção de Culturas Microbianas Carlos Rosa, Palmas, TO, Brasil
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2
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Lucaroni AC, Dresch AP, Fogolari O, Giehl A, Treichel H, Bender JP, Mibielli GM, Alves SL. Effects of Temperature and pH on Salt-Stressed Yeast Cultures in Non-Detoxified Coconut Hydrolysate. Ind Biotechnol (New Rochelle N Y) 2022. [DOI: 10.1089/ind.2021.0029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ana C. Lucaroni
- Laboratory of Biochemistry and Genetics, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Aline P. Dresch
- Laboratory of Solid Waste, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Odinei Fogolari
- Laboratory of Biochemistry and Genetics, Federal University of Fronteira Sul, Chapecó, SC, Brazil
- Laboratory of Solid Waste, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Anderson Giehl
- Laboratory of Biochemistry and Genetics, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Helen Treichel
- Laboratory of Microbiology and Bioprocesses, Federal University of Fronteira Sul, Erechim, RS, Brazil
| | - João P. Bender
- Laboratory of Solid Waste, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | | | - Sérgio L. Alves
- Laboratory of Biochemistry and Genetics, Federal University of Fronteira Sul, Chapecó, SC, Brazil
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Teixeira MFNP, Souza CR, Morais PB. Diversity and enzymatic capabilities of fungi associated with the digestive tract of larval stages of a shredder insect in Cerrado and Amazon Forest, Brazil. BRAZ J BIOL 2022; 82:e260039. [PMID: 35830012 DOI: 10.1590/1519-6984.260039] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 04/27/2022] [Indexed: 11/22/2022] Open
Abstract
Tropical biomes such as Brazilian Cerrado and Amazon Forest have a great diversity of fungi and insects. Interactions between these organisms can be beneficial to both partners. In streams, these interactions contribute to litter decomposition. Studying the digestive tract (DT) of shredder insects as a habitat for fungal microorganisms is an opportunity to obtain fungal strains with biotechnological potential, which may help to understand the symbiotic relationships between these organisms in tropical forests. This study investigated the fungal community in the DT of larvae of Triplectides (Trichoptera: Leptoceridae) collected in low-order streams in the Cerrado and Amazon Forest biomes in Brazil. Forty-nine fungal isolates were obtained and identified among 32 species and 12 genera. The genus Roussoella was only found in the DT of insects in Amazon Forest streams, while 7 genera only occurred in the DT of insects in Cerrado streams. The genus Penicillium (40%) was the most frequent. In the Cerrado, 78% were producers of CMCase, more than two-fold that in the Amazon Forest (35%). And 62% were producers of xylanase, in the Cerrado and 71% in the Amazon Forest. In this context, the fungal community in the DT of Triplectides larvae may play an important role in the insect diet by breaking down lignocellulosic material.
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Affiliation(s)
- M F N P Teixeira
- Universidade Federal do Tocantins - UFT, Laboratório de Microbiologia e Biotecnologia Ambiental, Palmas, TO, Brasil
| | - C R Souza
- Universidade Federal do Tocantins - UFT, Laboratório de Microbiologia e Biotecnologia Ambiental, Palmas, TO, Brasil.,Instituto Federal de Educação, Ciência e Tecnologia do Tocantins - IFTO, Gurupi, TO, Brasil
| | - P B Morais
- Universidade Federal do Tocantins - UFT, Laboratório de Microbiologia e Biotecnologia Ambiental, Palmas, TO, Brasil
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Tadioto V, Milani LM, Barrilli ÉT, Baptista CW, Bohn L, Dresch A, Harakava R, Fogolari O, Mibielli GM, Bender JP, Treichel H, Stambuk BU, Müller C, Alves SL. Analysis of glucose and xylose metabolism in new indigenous Meyerozyma caribbica strains isolated from corn residues. World J Microbiol Biotechnol 2022; 38:35. [PMID: 34989919 DOI: 10.1007/s11274-021-03221-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/22/2021] [Indexed: 11/26/2022]
Abstract
Aiming to broaden the base of knowledge about wild yeasts, four new indigenous strains were isolated from corn residues, and phylogenetic-tree assemblings on ITS and LSU regions indicated they belong to Meyerozyma caribbica. Yeasts were cultivated under full- and micro-aerobiosis, starting with low or high cell-density inoculum, in synthetic medium or corn hydrolysate containing glucose and/or xylose. Cells were able to assimilate both monosaccharides, albeit by different metabolic routes (fermentative or respiratory). They grew faster in glucose, with lag phases ~ 10 h shorter than in xylose. The hexose exhaustion occurred between 24 and 34 h, while xylose was entirely consumed in the last few hours of cultivation (44-48 h). In batch fermentation in synthetic medium with high cell density, under full-aerobiosis, 18-20 g glucose l-1 were exhausted in 4-6 h, with a production of 6.5-7.0 g ethanol l-1. In the xylose medium, cells needed > 12 h to consume the carbohydrate, and instead of ethanol, cells released 4.4-6.4 g l-1 xylitol. Under micro-aerobiosis, yeasts were unable to assimilate xylose, and glucose was more slowly consumed, although the ethanol yield was the theoretical maximum. When inoculated into the hydrolysate, cells needed 4-6 h to deplete glucose, and xylose had a maximum consumption of 57%. Considering that the hydrolysate contained ~ 3 g l-1 acetic acid, it probably has impaired sugar metabolism. Thus, this study increases the fund of knowledge regarding indigenous yeasts and reveals the biotechnological potential of these strains.
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Affiliation(s)
- Viviani Tadioto
- Laboratory of Biochemistry and Genetics, Campus Chapecó, Federal University of Fronteira Sul, Rodovia SC 484, Km 2, 89815-899, Bairro Fronteira Sul, Chapecó, SC, Brazil
| | - Letícia M Milani
- Laboratory of Biochemistry and Genetics, Campus Chapecó, Federal University of Fronteira Sul, Rodovia SC 484, Km 2, 89815-899, Bairro Fronteira Sul, Chapecó, SC, Brazil
| | - Évelyn T Barrilli
- Laboratory of Biochemistry and Genetics, Campus Chapecó, Federal University of Fronteira Sul, Rodovia SC 484, Km 2, 89815-899, Bairro Fronteira Sul, Chapecó, SC, Brazil
| | - Cristina W Baptista
- Laboratory of Biochemistry and Genetics, Campus Chapecó, Federal University of Fronteira Sul, Rodovia SC 484, Km 2, 89815-899, Bairro Fronteira Sul, Chapecó, SC, Brazil
| | - Letícia Bohn
- Laboratory of Solid Waste, Campus Chapecó, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Aline Dresch
- Laboratory of Solid Waste, Campus Chapecó, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Ricardo Harakava
- Laboratory of Phytopathological Biochemistry, Biological Institute, São Paulo, SP, Brazil
| | - Odinei Fogolari
- Laboratory of Biochemistry and Genetics, Campus Chapecó, Federal University of Fronteira Sul, Rodovia SC 484, Km 2, 89815-899, Bairro Fronteira Sul, Chapecó, SC, Brazil
- Laboratory of Solid Waste, Campus Chapecó, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Guilherme M Mibielli
- Laboratory of Solid Waste, Campus Chapecó, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - João P Bender
- Laboratory of Solid Waste, Campus Chapecó, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Helen Treichel
- Laboratory of Microbiology and Bioprocesses, Campus Erechim, Federal University of Fronteira Sul, Erechim, RS, Brazil
| | - Boris U Stambuk
- Laboratory of Biochemistry and Molecular Biotechnology of Yeasts, Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Caroline Müller
- Laboratory of Biochemistry and Genetics, Campus Chapecó, Federal University of Fronteira Sul, Rodovia SC 484, Km 2, 89815-899, Bairro Fronteira Sul, Chapecó, SC, Brazil
| | - Sérgio L Alves
- Laboratory of Biochemistry and Genetics, Campus Chapecó, Federal University of Fronteira Sul, Rodovia SC 484, Km 2, 89815-899, Bairro Fronteira Sul, Chapecó, SC, Brazil.
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Scapini T, Dalastra C, Camargo AF, Kubeneck S, Modkovski TA, Júnior SLA, Treichel H. Seawater-based biorefineries: A strategy to reduce the water footprint in the conversion of lignocellulosic biomass. BIORESOURCE TECHNOLOGY 2022; 344:126325. [PMID: 34785329 DOI: 10.1016/j.biortech.2021.126325] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/07/2021] [Accepted: 11/09/2021] [Indexed: 06/13/2023]
Abstract
Biorefineries are an essential step towards implementing a circular economy in the long term. They are based on renewable raw materials and must be designed holistically, recovering building blocks from being converted into several products. Lignocellulosic biomass is considered a critical pillar for a biologically based economy and a high value-added feedstock. The separation of the structural complexity that makes up the biomass allows the development of different product flows. Chemical, physical, and biological processes are evaluated for fractionation, hydrolysis, and fermentation processes in biorefineries; however, the volume of freshwater used affects water safety and increases the economic costs. Non-potable-resources-based technologies for biomass bioconversion are essential for biorefineries to become environmentally and economically sustainable systems. Studies are being carried out to substitute freshwater with seawater to reduce the water footprint. Accordingly, this review addresses a comprehensive discussion about seawater-based biorefineries focusing on lignocellulosic biomass conversion in biofuel and value-added products.
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Affiliation(s)
- Thamarys Scapini
- Laboratory of Microbiology and Bioprocess (LAMIBI), Federal University of Fronteira Sul, Erechim, RS, Brazil; Bioprocess Engineering and Biotechnology Department, Federal University of Paraná, Curitiba, PR, Brazil
| | - Caroline Dalastra
- Laboratory of Microbiology and Bioprocess (LAMIBI), Federal University of Fronteira Sul, Erechim, RS, Brazil
| | - Aline Frumi Camargo
- Laboratory of Microbiology and Bioprocess (LAMIBI), Federal University of Fronteira Sul, Erechim, RS, Brazil; Department of Biological Science, Graduate Program in Biotechnology and Bioscience, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Simone Kubeneck
- Laboratory of Microbiology and Bioprocess (LAMIBI), Federal University of Fronteira Sul, Erechim, RS, Brazil
| | | | - Sérgio Luiz Alves Júnior
- Laboratory of Biochemistry and Genetics, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Helen Treichel
- Laboratory of Microbiology and Bioprocess (LAMIBI), Federal University of Fronteira Sul, Erechim, RS, Brazil; Department of Biological Science, Graduate Program in Biotechnology and Bioscience, Federal University of Santa Catarina, Florianópolis, SC, Brazil.
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Rajeswari G, Jacob S, Chandel AK, Kumar V. Unlocking the potential of insect and ruminant host symbionts for recycling of lignocellulosic carbon with a biorefinery approach: a review. Microb Cell Fact 2021; 20:107. [PMID: 34044834 PMCID: PMC8161579 DOI: 10.1186/s12934-021-01597-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 05/17/2021] [Indexed: 12/02/2022] Open
Abstract
Uprising fossil fuel depletion and deterioration of ecological reserves supply have led to the search for alternative renewable and sustainable energy sources and chemicals. Although first generation biorefinery is quite successful commercially in generating bulk of biofuels globally, the food versus fuel debate has necessitated the use of non-edible feedstocks, majorly waste biomass, for second generation production of biofuels and chemicals. A diverse class of microbes and enzymes are being exploited for biofuels production for a series of treatment process, however, the conversion efficiency of wide range of lignocellulosic biomass (LCB) and consolidated way of processing remains challenging. There were lot of research efforts in the past decade to scour for potential microbial candidate. In this context, evolution has developed the gut microbiota of several insects and ruminants that are potential LCB degraders host eco-system to overcome its host nutritional constraints, where LCB processed by microbiomes pretends to be a promising candidate. Synergistic microbial symbionts could make a significant contribution towards recycling the renewable carbon from distinctly abundant recalcitrant LCB. Several studies have assessed the bioprospection of innumerable gut symbionts and their lignocellulolytic enzymes for LCB degradation. Though, some reviews exist on molecular characterization of gut microbes, but none of them has enlightened the microbial community design coupled with various LCB valorization which intensifies the microbial diversity in biofuels application. This review provides a deep insight into the significant breakthroughs attained in enrichment strategy of gut microbial community and its molecular characterization techniques which aids in understanding the holistic microbial community dynamics. Special emphasis is placed on gut microbial role in LCB depolymerization strategies to lignocellulolytic enzymes production and its functional metagenomic data mining eventually generating the sugar platform for biofuels and renewable chemicals production.
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Affiliation(s)
- Gunasekaran Rajeswari
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Chengalpattu Dist. , Kattankulathur, 603203, Tamil Nadu, India
| | - Samuel Jacob
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Chengalpattu Dist. , Kattankulathur, 603203, Tamil Nadu, India.
| | - Anuj Kumar Chandel
- Department of Biotechnology, Engineering School of Lorena (EEL), University of São Paulo, Lorena, 12.602.810, Brazil
| | - Vinod Kumar
- School of Water, Energy and Environment, Cranfield University, Cranfield, MK43 0AL, UK.
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