Upon pathogen attack, plants very quickly undergo rather complex physico-chemical changes, such as the production of new chemicals or alterations in membrane and cell wall properties, to reduce disease damages. An underestimated threat is represented by root parasitic nematodes. In Vitis vinifera L., the nematode Xiphinema index is the unique vector of Grapevine fanleaf virus, responsible for fanleaf degeneration, one of the most widespread and economically damaging diseases worldwide. The aim of this study was to investigate changes in the emission of biogenic volatile organic compounds (BVOCs) in grapevines attacked by X. index. BVOCs play a role in plant defensive mechanisms and are synthetized in response to biotic damages. In our study, the BVOC profile was altered by the nematode feeding process. We found a decrease in β-ocimene and limonene monoterpene emissions, as well as an increase in α-farnesene and α-bergamotene sesquiterpene emissions in nematode-treated plants. Moreover, we evaluated the PR1 gene expression. The transcript level of PR1 gene was higher in the nematode-wounded roots, while in the leaf tissues it showed a lower expression compared to control grapevines.
Characterization of the biogenic volatile organic compounds (BVOCs) and analysis of the PR1 molecular marker in Vitis vinifera L. inoculated with the nematode Xiphinema index / G. Castorina, F. Grassi, G. Consonni, S. Vitalini, R. Oberti, A. Calcante, E. Ferrari, M. Bononi, M. Iriti. - In: INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES. - ISSN 1422-0067. - 21:12(2020 Jun), pp. 4485.1-4485.13.
|Titolo:||Characterization of the biogenic volatile organic compounds (BVOCs) and analysis of the PR1 molecular marker in Vitis vinifera L. inoculated with the nematode Xiphinema index|
IRITI, MARCELLO (Corresponding)
|Parole Chiave:||BVOCs; Dagger nematodes; GC-MS; Grapevine; Monoterpenes; PR1 gene; Sesquiterpenes; SPME; Xiphinema index|
|Settore Scientifico Disciplinare:||Settore AGR/07 - Genetica Agraria|
Settore AGR/15 - Scienze e Tecnologie Alimentari
Settore AGR/09 - Meccanica Agraria
Settore AGR/12 - Patologia Vegetale
|Data di pubblicazione:||giu-2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.3390/ijms21124485|
|Appare nelle tipologie:||01 - Articolo su periodico|