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IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Lipids at the crossroads of protection: lipid signalling in grapevine defence mechanisms

Lipids at the crossroads of protection: lipid signalling in grapevine defence mechanisms

Abstract

Understanding grapevine molecular processes and the underlying defence responses is vital for developing sustainable disease control strategies. Lipid signalling pathways, involving the synthesis and degradation of lipid molecules, have emerged as a key regulator in plant defence against pathogens. This study aims to elucidate the role of fatty acids and lipid signalling in grapevine’s defence response to P. viticola infection. The expression of lipid metabolism-related as well as lipid signalling genes was analysed, by qPCR, in three grapevine genotypes: Chardonnay (susceptible), Regent (tolerant) with Rpv3-1 resistance loci, and Sauvignac (resistant) harbouring a pyramid of Rpv12 and Rpv3-1 resistance loci. A highly aggressive P. viticola isolate (NW-10/16) was employed for the infection studies. Additionally, fatty acid modulation, by gas chromatography, during infection was monitored, by gas chromatography. The work suggests that lipid metabolism and lipid signalling events is genotype-dependent. Notably, Regent displayed specific modulation of genes associated with lipid signalling and fatty acids, possibly linked to the Rpv3 loci. In contrast, Sauvignac, carrying the Rpv12 locus dominantly, may activate alternative defence pathways rather than lipid signalling.

Acknowledgements: The present work was funded by FCT-Portugal: PhD fellowship, (GL: SFRH/BD/145298/2019); Research Units and projects BioISI (UIDB/00006/2020), project (PTDC/BIA-BQM/28539/2017).

1)  Laureano G. et al. (2018) The interplay between membrane lipids and phospholipase A family members in grapevine resistance against Plasmopara viticola. Sci Rep 8, 14538, DOI 10.1038/s41598-018-32559-z

2)  Laureano G. et al. (2023) Grapevine-Associated Lipid Signalling Is Specifically Activated in an Rpv3 Background in Response to an Aggressive P. viticola Pathovar. Cells, 12(3), 394, DOI 10.3390/cells12030394

DOI:

Publication date: October 6, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Gonçalo Laureano1,2*, Ana Rita Matos1, Andreia Figueiredo1,2

1Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa, Portugal
2Grapevine Pathogen Systems Lab, BioISI, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa, Portugal

Contact the author*

Keywords

lipid signalling, pathogen interaction, defence, fatty acids

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

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