Biosynthesis and genomic analysis of medium-chain hydrocarbon production by the endophytic fungal isolate Nigrograna mackinnonii E5202H

An endophytic fungus was isolated that produces a series of volatile natural products, including terpenes and odd chain polyenes. Phylogenetic analysis of the isolate using five loci suggests that it is closely related to Nigrograna mackinnonii CBS 674.75. The main component of the polyene series wa...

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Veröffentlicht in:Applied microbiology and biotechnology 2015-04, Vol.99 (8), p.3715-3728
Hauptverfasser: Shaw, Jeffery J, Spakowicz, Daniel J, Dalal, Rahul S, Davis, Jared H, Lehr, Nina A, Dunican, Brian F, Orellana, Esteban A, Narváez-Trujillo, Alexandra, Strobel, Scott A
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container_issue 8
container_start_page 3715
container_title Applied microbiology and biotechnology
container_volume 99
creator Shaw, Jeffery J
Spakowicz, Daniel J
Dalal, Rahul S
Davis, Jared H
Lehr, Nina A
Dunican, Brian F
Orellana, Esteban A
Narváez-Trujillo, Alexandra
Strobel, Scott A
description An endophytic fungus was isolated that produces a series of volatile natural products, including terpenes and odd chain polyenes. Phylogenetic analysis of the isolate using five loci suggests that it is closely related to Nigrograna mackinnonii CBS 674.75. The main component of the polyene series was purified and identified as (3E,5E,7E)-nona-1,3,5,7-tetraene (NTE), a novel natural product. Non-oxygenated hydrocarbons of this chain length are uncommon and desirable as gasoline-surrogate biofuels. The biosynthetic pathway for NTE production was explored using metabolic labeling and gas chromatography time of flight mass spectometer (GCMS). Two-carbon incorporation¹³C acetate suggests that it is derived from a polyketide synthase (PKS) followed by decarboxylation. There are several known mechanisms for such decarboxylation, though none have been discovered in fungi. Towards identifying the PKS responsible for the production of NTE, the genome of N. mackinnonii E5202H (ATCC SD-6839) was sequenced and assembled. Of the 32 PKSs present in the genome, 17 are predicted to contain sufficient domains for the production of NTE. These results exemplify the capacity of endophytic fungi to produce novel natural products that may have many uses, such as biologically derived fuels and commodity chemicals.
doi_str_mv 10.1007/s00253-014-6206-5
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Phylogenetic analysis of the isolate using five loci suggests that it is closely related to Nigrograna mackinnonii CBS 674.75. The main component of the polyene series was purified and identified as (3E,5E,7E)-nona-1,3,5,7-tetraene (NTE), a novel natural product. Non-oxygenated hydrocarbons of this chain length are uncommon and desirable as gasoline-surrogate biofuels. The biosynthetic pathway for NTE production was explored using metabolic labeling and gas chromatography time of flight mass spectometer (GCMS). Two-carbon incorporation¹³C acetate suggests that it is derived from a polyketide synthase (PKS) followed by decarboxylation. There are several known mechanisms for such decarboxylation, though none have been discovered in fungi. Towards identifying the PKS responsible for the production of NTE, the genome of N. mackinnonii E5202H (ATCC SD-6839) was sequenced and assembled. 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subjects acetates
Analysis
Antibiotics
Ascomycota - classification
Ascomycota - genetics
Ascomycota - isolation & purification
Ascomycota - metabolism
biochemical pathways
Biodiesel fuels
Bioenergy and Biofuels
Biofuels
Biomedical and Life Sciences
Biosynthesis
Biotechnology
Chromatography
Cladistic analysis
decarboxylation
DNA, Fungal - chemistry
DNA, Fungal - genetics
endophytes
Endophytes - classification
Endophytes - genetics
Endophytes - isolation & purification
Endophytes - metabolism
Fungi
Gas chromatography
Gas Chromatography-Mass Spectrometry
Gasoline
Genes
genome
Genome, Fungal
Genomes
genomics
Hydrocarbons
Influence
Isotope Labeling
Life Sciences
loci
Metabolic Networks and Pathways - genetics
Metabolism
Metabolites
Microbial Genetics and Genomics
Microbiology
Molecular Sequence Data
Natural products
Phylogenetics
phylogeny
Physiological aspects
polyenes
Polyenes - metabolism
polyketide synthases
Ribosomal DNA
RNA polymerase
Sequence Analysis, DNA
Studies
terpenoids
VOCs
Volatile organic compounds
title Biosynthesis and genomic analysis of medium-chain hydrocarbon production by the endophytic fungal isolate Nigrograna mackinnonii E5202H
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