eprintid: 57230
rev_number: 23
eprint_status: archive
userid: 51264
dir: disk0/00/05/72/30
datestamp: 2026-03-16 11:13:30
lastmod: 2026-03-16 11:13:30
status_changed: 2026-03-16 11:13:30
type: conference_item
metadata_visibility: show
doclang: en
projects: ch-fibl-crop-protection
projects: ch-uni-basel
projects: winegrowing
confdates: 30.10.2025
conference: Annual Autumn Meeting SGP
confloc: Changins, Nyon
refereed: never
budget: 0
publicfulltext: TRUE
presentationtype: poster
creators_name: Palma-Guerrero, Javier
creators_name: Riemann, Michael
creators_name: Eliseev, Ruslan
creators_name: Arribas, Ana Maria
creators_name: Peter, Nadine
creators_name: Zehnder, Miro
creators_name: Bieler, Eva
creators_name: Schärer, Hans-Jakob
creators_id: javier.palma@fibl.org
creators_id: michael.riemann@fibl.org
creators_id: nadine.peter@fibl.org
creators_orcid: 0000-0002-0867-7601
creators_orcid: 0000-0003-0287-2112
title: The role of berry skin traits in fungus-resistant PIWI grapevines
ispublished: unpub
subjects: 8planthealth
subjects: Viticulture
keywords: Plant diseases, Fungi, Pathogen, Viticulture, Abacus, FiBL25134
abstract: The Interreg-funded project WiVitis aims to strengthen cross-border collaboration between research institutions and viticultural practice within the Upper Rhine region to promote sustainable viticulture and improve adaptation to climate change. The project focuses on evaluating PIWI grapevine varieties with multiple resistance genes against downy and powdery mildew, with the objective of assessing their resilience under extreme climatic conditions and their susceptibility to fungal pathogens, including Botrytis cinerea. PIWI varieties characterized by high berry firmness are being examined across various sites and environmental conditions. Participating institutions include the Julius Kühn-Institut (Germany), Dienstleistungszentrum Ländlicher Raum Rheinpfalz (Germany), the Research Institute of Organic Agriculture (FiBL-Switzerland), INRAE (France), the State Viticulture Institute Freiburg (WBI) (Germany), and the  Swiss Nanoscience Institute (Switzerland). The grape berry skin represents a complex, multifunctional tissue that plays a pivotal role in both plant defense and wine quality determination. Serving as the fruit’s primary protective barrier, it provides defense against fungal pathogens such as Botrytis cinerea (gray mold), mitigates mechanical damage during harvest and processing, and contains numerous compounds critical to the grape’s sensory and chemical characteristics. At FiBL-Switzerland, we are investigating skin traits in fungus-resistant PIWI grape varieties using a combination of penetrometer measurements to determine skin firmness, cryo-scanning electron microscopy (CRYO-SEM) of the grape surface to assess wax morphology, and cross-sectional analysis to measure skin thickness. Additionally, artificial grape inoculations in vitro are performed to evaluate the susceptibility of different PIWI and European grape varieties to Botrytis cinerea infections. The preliminary results indicate differences in both wax morphology and skin thickness among varieties, which may contribute to the varying levels of susceptibility observed in the in vitro assays.
date: 2025
date_type: completed
full_text_status: public
contact_email: info.suisse@fibl.org
conf_subm: not_subm
voa3r_agrovoc_lang: en
voa3r_agrovoc_lang: en
voa3r_agrovoc_lang: en
voa3r_agrovoc_lang: en
voa3r_agrovoc_value_string: plant diseases
voa3r_agrovoc_value_string: Fungi
voa3r_agrovoc_value_string: pathogens
voa3r_agrovoc_value_string: viticulture
voa3r_agrovoc_value_uri: http://aims.fao.org/aos/agrovoc/c_5962
voa3r_agrovoc_value_uri: http://aims.fao.org/aos/agrovoc/c_3145
voa3r_agrovoc_value_uri: http://aims.fao.org/aos/agrovoc/c_5630
voa3r_agrovoc_value_uri: http://aims.fao.org/aos/agrovoc/c_8277
fp7_project: no
access_rights: info:eu-repo/semantics/openAccess
citation:    Palma-Guerrero, Javier; Riemann, Michael; Eliseev, Ruslan; Arribas, Ana Maria; Peter, Nadine; Zehnder, Miro; Bieler, Eva and Schärer, Hans-Jakob    (2025) The role of berry skin traits in fungus-resistant PIWI grapevines.       Poster at:   Annual Autumn Meeting SGP, Changins, Nyon, 30.10.2025.     [Completed]     
document_url: /id/eprint/57230/1/SGP-poster_%20Palma_et_al.pdf