Pesquisa Agropecuária Tropical (May 2023)

Profile of volatile compounds released by Waitea circinata against Magnaporthe oryzae under different periods and temperatures

  • Luiza Vieira da Cruz,
  • Marcos Henrique Faleiros Santos,
  • Bryna Tamilla Alves Falcão Gama,
  • Leila Garcês de Araújo,
  • Ana Paula Terezan,
  • Jerônimo Raimundo de Oliveira Neto,
  • Luiz Carlos da Cunha,
  • Anselmo Elcana de Oliveira,
  • Márcia Matos da Silva,
  • Carla Thaís Pereira Coelho,
  • Vanessa Gisele Pasqualotto Severino

DOI
https://doi.org/10.1590/1983-40632023v5375038
Journal volume & issue
Vol. 53
p. e75038

Abstract

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Rice blast caused by the Magnaporthe oryzae pathogen is a major disease in this crop, and may cause devastating losses. This study aimed to investigate the profile of Waitea circinata mycorrhiza volatile compounds in antagonism to M. oryzae, under different growth periods and temperatures, using a completely randomized design. Volatile organic compounds were extracted by headspace solid phase microextraction and analyzed by gas chromatography mass spectrometry, while multidimensional scaling was used to compare the produced volatile organic compounds. The main compounds responsible by the antagonism to M. oryzae were longifolene, trans-β-farnesene, (Z)-α-bisabolene and δ-amorphene, which can be used as biofungicides and incorporated into rice blast management strategies.

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