Bioprospecting of Diaporthe terebinthifolii LGMF907 for antimicrobial compounds

Aliandra G. de Medeiros, Daiani C. Savi, Prithiba Mitra, Khaled A. Shaaban, Amit K. Jha, Jon S. Thorson, Jürgen Rohr, Chirlei Glienke

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Antibiotic-resistant bacteria have been observed with increasing frequency over the past decades, driving the search for new drugs and stimulating the interest in natural products sources. Endophytic fungi from medicinal plants represent a great source of novel bioactive compounds useful to pharmaceutical and agronomical purposes. Diaporthe terebinthifolii is an endophytic species isolated from Schinus terebinthifolius, a plant used in popular medicine for several health problems. The strain D. terebinthifolii LGMF907 was previously reported by our group to produce secondary metabolites with biological activity against phytopathogens. Based on these data, strain LGMF907 was chosen for bioprospecting against microorganisms of clinical importance and for characterization of major secondary metabolites. In this study, different culture conditions were evaluated and the biological activity of this strain was expanded. The crude extracts demonstrated high antibacterial activity against Escherichia coli, Micrococcus luteus, Saccharomyces cerevisiae, methicillin-sensitive Staphylococcus aureus, and methicillin-resistant S. aureus. The compounds diaporthin and orthosporin were characterized and also showed activity against the clinical microorganisms evaluated. This study discloses the first isolation of diaporthin and orthosporin from D. terebinthifolii, and revealed the potential of this endophytic fungus to produce secondary metabolites with antimicrobial activity.

Original languageEnglish
Pages (from-to)499-505
Number of pages7
JournalFolia Microbiologica
Volume63
Issue number4
DOIs
StatePublished - Jul 1 2018

Bibliographical note

Publisher Copyright:
© 2018, Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i.

Keywords

  • Diaporthe terebinthifolii
  • Diaporthin
  • Endophyte
  • Orthosporin
  • Schinus terebinthifolius Raddi
  • Secondary metabolites

ASJC Scopus subject areas

  • Microbiology

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