α-Glucosidase inhibitory and cytotoxic botryorhodines from mangrove endophytic fungus <i>Trichoderma</i> sp. 307

Zhang, Liuhong; Niaz, Shah Iram; Wang, Zhen; Zhu, Yu Cheng; Lin, Yongcheng; Li, Jing; Liu, Lan

doi:10.1080/14786419.2017.1385023

Cited by 27 publications

(17 citation statements)

References 13 publications

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“…1, 2 and 3 is Trichoderma asperellum, a fungus naturally found in soils [30]. Although Trichoderma species are usually found in terrestrial habitats, some isolates have been collected from marine environments, where they live in association with algae [31] and sponges [32], in coastal sediments [33], or as endophytes in mangroves [34]. Among these marine-derived species we found T. asperellum, which was further studied for its production of secondary metabolites, such as sesquiterpenes [35] and antibacterial peptides [36].…”

Section: Discussionmentioning

confidence: 99%

Screening of five marine-derived fungal strains for their potential to produce oxidases with laccase activities suitable for biotechnological applications

et al. 2020

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Background: Environmental pollution is one of the major problems that the world is facing today. Several approaches have been taken, from physical and chemical methods to biotechnological strategies (e.g. the use of oxidoreductases). Oxidative enzymes from microorganisms offer eco-friendly, cost-effective processes amenable to biotechnological applications, such as in industrial dye decolorization. The aim of this study was to screen marinederived fungal strains isolated from three coastal areas in Tunisia to identify laccase-like activities, and to produce and characterize active cell-free supernatants of interest for dye decolorization. Results: Following the screening of 20 fungal strains isolated from the harbors of Sfax and Monastir (Tunisia), five strains were identified that displayed laccase-like activities. Molecular-based taxonomic approaches identified these strains as belonging to the species Trichoderma asperellum, Stemphylium lucomagnoense and Aspergillus nidulans. Among these five isolates, one T. asperellum strain (T. asperellum 1) gave the highest level of secreted oxidative activities, and so was chosen for further studies. Optimization of the growth medium for liquid cultures was first undertaken to improve the level of laccase-like activity in culture supernatants. Finally, the culture supernatant of T. asperellum 1 decolorized different synthetic dyes belonging to diverse dye families, in the presence or absence of 1hydroxybenzotriazole (HBT) as a mediator. Conclusions: The optimal growth conditions to produce laccase-like active cell-free supernatants from T. asperellum 1 were 1.8 mM CuSO 4 as an inducer, 1% NaCl to mimic a seawater environment and 3% sucrose as a carbon source. The culture supernatant of T. asperellum 1 effectively decolorized different synthetic dyes belonging to diverse chemical classes, and the presence of HBT as a mediator improved the decolorization process.

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Section: Discussionmentioning

confidence: 99%

Screening of five marine-derived fungal strains for their potential to produce oxidases with laccase activities suitable for biotechnological applications

et al. 2020

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“…These enzymes can also be employed to improve wine tang and increase the fermentation, filtration and excellence of beer. Above all, the potential of Trichoderma-derived bioactive compounds could be exploited in the pharmaceutical industry because of their several curative properties [200][201][202][203].…”

Section: Industrial Applicationsmentioning

confidence: 99%

Trichoderma: The “Secrets” of a Multitalented Biocontrol Agent

Sood

Kapoor

Kumar

et al. 2020

Plants

326

235

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The plant-Trichoderma-pathogen triangle is a complicated web of numerous processes. Trichoderma spp. are avirulent opportunistic plant symbionts. In addition to being successful plant symbiotic organisms, Trichoderma spp. also behave as a low cost, effective and ecofriendly biocontrol agent. They can set themselves up in various patho-systems, have minimal impact on the soil equilibrium and do not impair useful organisms that contribute to the control of pathogens. This symbiotic association in plants leads to the acquisition of plant resistance to pathogens, improves developmental processes and yields and promotes absorption of nutrient and fertilizer use efficiency. Among other biocontrol mechanisms, antibiosis, competition and mycoparasitism are among the main features through which microorganisms, including Thrichoderma, react to the presence of other competitive pathogenic organisms, thereby preventing or obstructing their development. Stimulation of every process involves the biosynthesis of targeted metabolites like plant growth regulators, enzymes, siderophores, antibiotics, etc. This review summarizes the biological control activity exerted by Trichoderma spp. and sheds light on the recent progress in pinpointing the ecological significance of Trichoderma at the biochemical and molecular level in the rhizosphere as well as the benefits of symbiosis to the plant host in terms of physiological and biochemical mechanisms. From an applicative point of view, the evidence provided herein strongly supports the possibility to use Trichoderma as a safe, ecofriendly and effective biocontrol agent for different crop species.

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“…In this study, TEF-1 sequence-based phylogeny suggests that the species phylogenetically closest to our three isolates Trichoderma sp 1, 2 and 3 is Trichoderma asperellum, a fungus naturally found in soils [29]. Although Trichoderma species are usually found in terrestrial habitats, some isolates have been collected from marine environments, where they live in association with algae [30] and sponges [31], in coastal sediments [32], or as endophytes in mangroves [33]. Among these marine-derived species we found T. asperellum, which was further studied for its production of secondary metabolites, such as sesquiterpenes [34] and antibacterial peptides [35].…”

Section: Discussionmentioning

confidence: 61%

Screening of five marine-derived fungal strains for their potential to produce oxidases with laccase activities suitable for biotechnological applications

Ali

Chaduli

Navarro

et al. 2020

Preprint

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Background : Environmental pollution is one of the major problems that the world is facing today. Several approaches have been taken, from physical and chemical methods to biotechnological strategies (e.g. the use of oxidoreductases). Oxidative enzymes from microorganisms offer eco-friendly, cost–effective processes amenable to biotechnological applications, such as in industrial dye decolorization. The aim of this study was to screen marine-derived fungal strains isolated from three coastal areas in Tunisia to identify laccase-like activities, and to produce and characterize active cell-free supernatants of interest for dye decolorization.Results : Following the screening of 20 fungal strains isolated from the harbors of Sfax and Monastir (Tunisia), five strains were identified that displayed laccase-like activities. Molecular-based taxonomic approaches identified these strains as belonging to the species Trichoderma asperellum , Stemphylium lucomagnoense and Aspergillus nidulans . Among these five isolates, one T. asperellum strain ( T. asperellum 1) gave the highest level of secreted oxidative activities, and so was chosen for further studies. Optimization of the growth medium for liquid cultures was first undertaken to improve the level of laccase-like activity in culture supernatants. Finally, the culture supernatant of T. asperellum 1 decolorized different synthetic dyes belonging to diverse dye families, in the presence or absence of 1-hydroxybenzotriazole (HBT) as a mediator.Conclusions : The optimal growth conditions to produce laccase-like active cell-free supernatants from T. asperellum 1 were 1.8 mM CuSO 4 as an inducer, 1% NaCl to mimic a seawater environment and 3% sucrose as a carbon source. The culture supernatant of T. asperellum 1 effectively decolorized different synthetic dyes belonging to diverse chemical classes, and the presence of HBT as a mediator improved the decolorization process.

show abstract

α-Glucosidase inhibitory and cytotoxic botryorhodines from mangrove endophytic fungus Trichoderma sp. 307

Cited by 27 publications

References 13 publications

Screening of five marine-derived fungal strains for their potential to produce oxidases with laccase activities suitable for biotechnological applications

Screening of five marine-derived fungal strains for their potential to produce oxidases with laccase activities suitable for biotechnological applications

Trichoderma: The “Secrets” of a Multitalented Biocontrol Agent

Screening of five marine-derived fungal strains for their potential to produce oxidases with laccase activities suitable for biotechnological applications

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