Transcript dynamics in wounded and inoculated scots pine

Vilnis Šķipars (Coresponding Author), Dainis Ruņģis

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Abstract

Comparative transcriptome analysis provides a useful tool for the exploration of plant– pathogen interaction by allowing in-depth comparison of gene expression between unaffected, inoculated and wounded organisms. Here we present the results of comparative transcriptome analysis in genetically identical one-year-old Scots pine ramets after wounding and inoculation with Heterobasidion annosum. We identified 230 genes that were more than 2-fold upregulated in inoculated samples (compared to controls) and 116 downregulated genes. Comparison of inoculated samp les with wounded samples identified 32 differentially expressed genes (30 were upregulated after inoculation). Several of the genes upregulated after inoculation are involved in protection from oxidative stress, while genes involved in photosynthesis, water transport and drought stress tolerance were downregulated. An NRT3 family protein was the most upregulated transcript in response to both inoculation and wounding, while a U-box domain-containing protein gene was the most upregulated gene comparing inoculation to wounding. The observed transcriptome dynamics suggest involvement of auxin, ethylene, jasmonate, gibberellin and reactive oxygen species pathways and cell wall modification regulation in response to H. annosum infection. The results are compared to methyl jasmonate induced transcriptome dynamics.

Original languageEnglish
Article number1505
Pages (from-to)1-20
Number of pages20
JournalInternational Journal of Molecular Sciences
Volume22
Issue number4
DOIs
Publication statusPublished - 3 Feb 2021
Externally publishedYes

Keywords*

  • Heterobasidion annosum
  • Pinus sylvestris
  • Plant–pathogen interaction
  • Transcriptome

Field of Science*

  • 1.6 Biological sciences
  • 4.1 Agriculture, Forestry, and Fisheries

Publication Type*

  • 1.1. Scientific article indexed in Web of Science and/or Scopus database

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