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Plants (Basel)

Title:		Croatian Native Grapevine Varieties' VOCs Responses upon Plasmopara viticola Inoculation
Author(s):		Stambuk P; Sikuten I; Preiner D; Maletic E; Karoglan Kontic J; Tomaz I;
Address:		"Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Svetosimunska Cesta 25, 10000 Zagreb, Croatia. Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetosimunska Cesta 25, 10000 Zagreb, Croatia"
Journal Title:		Plants (Basel)
Year:		2023
Volume:		20230115
Issue:		2
Page Number:		-
DOI:		10.3390/plants12020404
ISSN/ISBN:		2223-7747 (Print) 2223-7747 (Electronic) 2223-7747 (Linking)
Abstract:		"The Plasmopara viticola pathogen causes one of the most severe grapevine diseases, namely downy mildew. The response to P. viticola involves both visible symptoms and intricate metabolomic alterations, particularly in relation to volatile organic compounds, and depends on the degree of resistance of a particular variety. There are numerous native grapevine varieties in Croatia, and they vary in susceptibility to this oomycete. As previously reported, in vitro leaf disc bioassay and polyphenolic compound analysis are complementary methods that can be used to separate native varieties into various resistance classes. This research used the Solid Phase Microextraction-Arrow Gas Chromatography-Mass Spectrometry method to identify the early alterations in the VOCs in the leaves after P. viticola inoculation. Based on the absolute peak area of sesquiterpenes, some discrepancies between the sampling terms were noticed. The presence of certain chemical compounds such as humulene, ylangene, and alpha-farnesene helped distinguish the non-inoculated and inoculated samples. Although specific VOC responses to P. viticola infection of native varieties from various resistance classes could not be identified, the response of less susceptible native varieties and resistant controls was associated with an increase in the absolute peak area of several compounds, including geranylacetone, ss-ocimene, and (E)-2-hexen-1-ol"
Keywords:		SPME-Arrow-GC/MS Vitis vinifera L.downy mildew secondary metabolites;
Notes:		"PubMed-not-MEDLINEStambuk, Petra Sikuten, Iva Preiner, Darko Maletic, Edi Karoglan Kontic, Jasminka Tomaz, Ivana eng KK.01.1.1.01.0005/Centre of Excellence for Biodiveristy and Molecular Plant Breeding/ Switzerland 2023/01/22 Plants (Basel). 2023 Jan 15; 12(2):404. doi: 10.3390/plants12020404"