Behavior of Olive Genotypes Against Quick Decline Syndrome (QDS) Caused by <i>Xylella fastidiosa</i> subsp. <i>pauca</i> in Apulia.

ABSTRACT: Xylella fastidiosa subsp. pauca (Xfp), a quarantine pathogen in the European Union, severely threatens Mediterranean olive production, especially in southern Italy, where Olive Quick Decline Syndrome (OQDS) has devastated Apulian olive groves. This study addresses the urgent need to identify resistant olive genotypes by monitoring 16 potentially tolerant genotypes over six years, assessing symptom severity and bacterial load. These genotypes, which survived in heavily infected areas, showed varied responses to Xfp; some maintained low symptom severity with minimal bacterial presence (high or undetectable Cq values), while others exhibited increased bacterial loads yet remained asymptomatic or showed limited canopy desiccation. SSR markers were used to investigat

SUBMITTER: Carlucci M 

PROVIDER: S-EPMC11769438 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature