Brazilian Journal of Biology (Jul 2022)

Correlation of genome methylation of fig tree accessions with natural nematode and rust incidence

  • M. G. F. Rodrigues,
  • A. C. Firmino,
  • J. J. Valentim,
  • B. E. Pavan,
  • A. F. A. Ferreira,
  • L. N. H. Monteiro,
  • E. S. Ramos,
  • R. V. G. Soutello

DOI
https://doi.org/10.1590/1519-6984.263041
Journal volume & issue
Vol. 84

Abstract

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Abstract Commercial fig tree cultivation in Brazil involves a single cultivar, ‘Roxo-de-Valinhos’. The use of a single cultivar results in serious diseases and related problems. The aim of this study was to characterize fig accessions by analyzing the natural root-knot nematode and leaf rust incidence in relation to the epigenomic profile of the plant, since epigenetic variations affect plant–pathogen interactions. All plants were attacked by nematodes, indicating susceptibility; Meloidogyne incognita was the root-knot nematode species involved. Joint analysis of data showed that methylation and leaf rust incidence were correlated when observed in the same phenological phase, presenting initial evidence of the same factorial pressure loads in genotypes, suggesting similar behavior within these genotypes.

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