Several soilborne oomycetes belonging to the genus Phytopythium have been associated to kiwifruit vine decline syndrome (KVDS) which is defined as a multifactorial syndrome where both abiotic and biotic stressors are involved. Phytopythium vexans is one of the main species isolated in affected orchards also revealing several interactions with other taxonomic groups composing the microbiome associated to the syndrome. Microbiome network analysis between taxa revealed strain-specific interactions, requiring further studies on the genomics of involved oomycetes. Furthermore, plant response to the presence Phytopythium vexans in Actinidia deliciosa roots, characterized through gene expression analysis approach, revealed an upregulation of ROS scavenging pathways and hormonal stress signaling in response to the pathogen presence and flooding at specific time points. Further transcriptomic studies on Actinidia roots will reveal a major understanding of all the involved pathways in oomycete pathogenesis on fruit trees. The model of KVDS as a multifactorial syndrome, where climate change plays an important role in defining the onset of the syndrome, requires the application and combination of different omics techniques for reaching a wider comprehension of oomycete pathogenesis in complex systems.

The role of the oomycete Phytopythium vexans as a biotic stress component of Kiwifruit Vine Decline Syndrome in Italy.

GUASCHINO Micol
First
;
GARELLO Marco;SPADARO Davide.
Last
2023-01-01

Abstract

Several soilborne oomycetes belonging to the genus Phytopythium have been associated to kiwifruit vine decline syndrome (KVDS) which is defined as a multifactorial syndrome where both abiotic and biotic stressors are involved. Phytopythium vexans is one of the main species isolated in affected orchards also revealing several interactions with other taxonomic groups composing the microbiome associated to the syndrome. Microbiome network analysis between taxa revealed strain-specific interactions, requiring further studies on the genomics of involved oomycetes. Furthermore, plant response to the presence Phytopythium vexans in Actinidia deliciosa roots, characterized through gene expression analysis approach, revealed an upregulation of ROS scavenging pathways and hormonal stress signaling in response to the pathogen presence and flooding at specific time points. Further transcriptomic studies on Actinidia roots will reveal a major understanding of all the involved pathways in oomycete pathogenesis on fruit trees. The model of KVDS as a multifactorial syndrome, where climate change plays an important role in defining the onset of the syndrome, requires the application and combination of different omics techniques for reaching a wider comprehension of oomycete pathogenesis in complex systems.
2023
Inglese
contributo
2 - Congresso
12th International Congress of Plant Pathology
Lione, Francia
20-25 agosto 2023
Internazionale
Book of Abstracts of the 12th International Congress of Plant Pathology
1312
1313
2
no
   La moria del kiwi – Approfondimento sull’eziologia e strumenti di prevenzione e difesa - KIRIS
   KIRIS
   REGIONE PIEMONTE
   912/A1706B
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GUASCHINO Micol, GARELLO Marco, NARI Luca, SPADARO Davide.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1947204
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