Grapevine–downy mildew Rendezvous: Proteome analysis of the first hours of an incompatible interaction

Rita B. Santos, Rui Nascimento, Ana V. Coelho, Andreia Figueiredo

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Grapevine is one of the most relevant crops in the world being used for economically important products such as wine. However, relevant grapevine cultivars are heavily affected by diseases such as the downy mildew disease caused by Plasmopara viticola. Improvements on grapevine resistance are made mainly by breeding techniques where resistance traits are introgressed into cultivars with desired grape characteristics. However, there is still a lack of knowledge on how resistant or tolerant cultivars tackle the P. viticola pathogen. In this study, using a shotgun proteomics LC-MS/MS approach, we unravel the protein modulation of a highly tolerant grapevine cultivar, Vitis vinifera “Regent”, in the first hours post inoculation (hpi) with P. viticola. At 6 hpi, proteins related to defense and to response to stimuli are negatively modulated while at 12 hpi there is an accumulation of proteins belonging to both categories. The co-occurrence of indicators of effector-triggered susceptibility (ETS) and effector-triggered immunity (ETI) is detected at both time-points, showing that these defense processes present high plasticity. The results obtained in this study unravel the tolerant grapevine defense strategy towards P. viticola and may provide valuable insights on resistance associated candidates and mechanisms, which may play an important role in the definition of new strategies for breeding approaches.

Original languageEnglish
Article number1498
Pages (from-to)1-17
Number of pages17
JournalPlants
Volume9
Issue number11
DOIs
Publication statusPublished - Nov 2020

Keywords

  • Defense-related proteins
  • ETI
  • ETS
  • Plant–pathogen interaction
  • Plasmopara viticola
  • Proteomics
  • Vitis vinifera

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