Pathogens (Sep 2022)

<i>Arthrobotrys musiformis</i> (Orbiliales) Kills <i>Haemonchus contortus</i> Infective Larvae (Trichostronylidae) through Its Predatory Activity and Its Fungal Culture Filtrates

  • Gustavo Pérez-Anzúrez,
  • Agustín Olmedo-Juárez,
  • Elke von-Son de Fernex,
  • Miguel Ángel Alonso-Díaz,
  • Edgar Jesús Delgado-Núñez,
  • María Eugenia López-Arellano,
  • Manasés González-Cortázar,
  • Alejandro Zamilpa,
  • Ana Yuridia Ocampo-Gutierrez,
  • Adolfo Paz-Silva,
  • Pedro Mendoza-de Gives

DOI
https://doi.org/10.3390/pathogens11101068
Journal volume & issue
Vol. 11, no. 10
p. 1068

Abstract

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Haemonchus contortus (Hc) is a parasite affecting small ruminants worldwide. Arthrobotrys musiformis (Am) is a nematode-trapping fungi that captures, destroys and feeds on nematodes. This study assessed the predatory activity (PA) and nematocidal activity (NA) of liquid culture filtrates (LCF) of Am against Hc infective larvae (L3), and additionally, the mycochemical profile (MP) was performed. Fungal identification was achieved by traditional and molecular procedures. The PA of Am against HcL3 was performed in water agar plates. Means of non-predated larvae were recorded and compared with a control group without fungi. LCF/HcL3 interaction was performed using micro-tittering plates. Two media, Czapek–Dox broth (CDB) and sweet potato dextrose broth (SPDB) and three concentrations, were assessed. Lectures were performed after 48 h interaction. The means of alive and dead larvae were recorded and compared with proper negative controls. The PA assessment revealed 71.54% larval reduction (p p < 0.05). Alkaloids and saponins were identified in both media; meanwhile, coumarins were only identified in CDB. The NA was only found in CDB, but not in SPDB. Coumarins could be responsible for the NA.

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