Journal of Integrative Agriculture ›› 2023, Vol. 22 ›› Issue (8): 2426-2440.DOI: 10.1016/j.jia.2023.02.032

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  • 收稿日期:2022-09-01 接受日期:2023-01-26 出版日期:2023-08-20 发布日期:2023-01-26

Characterization of volatile organic compounds in grafted tomato plants upon potyvirus necrotic infection

Roberta SPANÒ1, Mariarosaria MASTROCHIRICO1, Francesco LONGOBARDI2#, Salvatore#br# CERVELLIERI3, Vincenzo LIPPOLIS3, Tiziana MASCIA1#   

  1. 1 Department of Soil, Plant and Food Sciences, University of Bari “Aldo Moro”, Via Amendola 165/A, Bari 70126, Italy

    2 Department of Chemistry, University of Bari “Aldo Moro”, Via Orabona 4, Bari 70126, Italy

    3 National Research Council (CNR), Institute of Sciences of Food Production (ISPA), Via Amendola 122/O, Bari 70126, Italy

  • Received:2022-09-01 Accepted:2023-01-26 Online:2023-08-20 Published:2023-01-26
  • About author:Roberta SPANÒ, E-mail: roberta.spano@uniba.it; #Correspondence Francesco LONGOBARDI, Tel: +39-0805442042, E-mail: francesco.longobardi@uniba.it; Tiziana MASCIA, Tel: +39-0805442913, E-mail: tiziana.mascia@uniba.it
  • Supported by:

    This study was carried out within the Agritech National Research Center, Italy, and received funding from the European Union NextGenerationEU (PIANO NAZIONALE DI RIPRESA E RESILIENZA (PNRR) – MISSIONE 4 COMPONENTE 2, INVESTIMENTO 1.4 – D.D. 1032 17/06/2022, CN00000022). 

Abstract:

A headspace solid-phase microextraction-gas chromatography-mass spectrometry (HS-SPME/GC-MS) method was used to study the volatile organic compounds (VOCs) associated with the differential immune response of tomato plants infected with the recombinant strain of potato virus Y (PVYC-to), necrogenic to tomato.  Analysis was carried out in UC82 (UC), a virus susceptible tomato variety, comparing the same UC plants grafted or not onto a virus tolerant tomato ecotype, Manduria (Ma); the three types of samples used for the GC-MS analysis were mock-inoculated UC/Ma plants, UC/Ma+PVYC-to and UC+PVYC-to plants; the VOCs obtained were 111.  Results from symptomatic PVYC-to-infected UC plants showed a VOCs composition enriched in alcohols, fatty acid derivates, benzenoids, and salicylic acid derivatives, while in mock-inoculated UC/Ma plants VOCs were mainly characterized by methyl ester compounds.  The VOC profile was in line with RNAseq data analyses, denoting that PVYC-to viral RNA accumulation and disease symptoms induce the specific transcriptional activation of genes involved in VOCs biosynthesis.  Furthermore, principal component analysis highlighted that VOCs of PVYC-to-infected and mock-inoculated grafted plants were much closer each other than that of symptomatic PVYC-to-infected non-grafted UC plants.  These results suggest that VOCs profiles of tomato plants are related to the viral RNA accumulation, disease intensity and graft-derived tolerance to PVYC-to infection.

Key words: tomato ,  potyvirus ,  VOCs ,  defense ,  grafted plants