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has been cited by the following article:

• TITLE: Total Petroleum Hydrocarbon Degradation by Endophytic Fungi from the Ecuadorian Amazon

  AUTHORS: Fernando Marín, Hugo Navarrete, Alexandra Narvaez-Trujillo

  KEYWORDS: Fungal Endophyte, Biodegradation, Bioremediation, Hydrocarbon, Infrared Spectroscopy, Gas Chromatography

  JOURNAL NAME: Advances in Microbiology, Vol.8 No.12, December 29, 2018

  ABSTRACT: The capacity of 133 fungal endophyte isolates for degrading petroleum hydrocarbons was evaluated. The endophytes were isolated from leaf and stem tissues from 23 plants collected in a natural habitat contaminated with crude oil in southwestern Ecuador. Their capacity for hydrocarbon biodegradation was tested by an in vitro colorimetric qualitative test during 10 days, using the Minimal Salt Medium and crude oil as the carbon source. Taxonomic identification of the endophytic fungi that showed bioactivity in the qualitative test was carried out by analysis of the ITS gene of the region 18S of the rDNA. Endophytes showed the best results in the previous qualitative test where selected for a quantitative in vitro test for 30 days. Residual hydrocarbons were tracked by infrared spectroscopy (IR) and gas chromatography (GC) with a flame ionization detector. The maximum removal rates of total petroleum hydrocarbons were 99.6% (IR) and 99.8% (GC), corresponding to fungi of the genus Verticillium sp. and Xylaria sp. 1 respectively. This is the first report of biodegradation of crude oil hydrocarbons by endophytic fungi in a tropical ecosystem. The results suggest these fungal isolates are potential hydrocarbon biodegraders that could be used in bioremediation processes.