SVANELLA-DUMAS, Laurence; TSARMPOPOULOS, Iason; MARAIS, Armelle; FAURE, Chantal; THEIL, Sebastien; GLASA, Miroslav; PREDAJNA, Lukas; GAUDIN, Jonathan; TIAN, Sixing; PORCHER, Laetitia; GENTIT, Pascal; LEITE DE OLIVEIRA, Milena; KRAUSE-SAKATE, Renate; CANDRESSE, Thierry

doi:10.1094/PHYTO-03-23-0095-R

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SVANELLA-DUMAS, Laurence
Biologie du fruit et pathologie [BFP]

TSARMPOPOULOS, Iason
Biologie du fruit et pathologie [BFP]

MARAIS, Armelle
Biologie du fruit et pathologie [BFP]

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Article de revue

Ce document a été publié dans

Phytopathology. 2023, vol. 113, n° 8

American Phytopathological Society

Résumé en anglais

High-throughput sequencing of two lettuces showing virus-like symptoms in France provided evidence of infection by members of the Secoviridae family. One plant (JG1) had a complex mixed infection that involved, among others, a novel Waikavirus (lettuce waikavirus 1) and two isolates of a sequivirus related to lettuce mottle virus (LeMoV). The second lettuce plant (JG2) was single infected by LeMoV. Complete genomic sequences were obtained for all four isolates and, in addition, near complete genome sequences were obtained for other LeMoV or LeMoV-related isolates (from French cultivated and wild lettuces, and from a Brazilian cultivated lettuce) and for two isolates of another Asteraceae-infecting sequivirus, dandelion yellow mosaic virus (DaYMV). Analysis of these genomic sequences allows to propose tentative genome organization for the various viruses and to clarify their phylogenetic relationships. Sequence and host range comparisons point to significant differences between the two sequivirus isolates identified in the JG1 plant and LeMoV isolates from France and Brazil, suggesting they belong to a novel species for which the name lettuce star mosaic virus is proposed.< Réduire

Mots clés

virus de la mosaïque étoilée de la laitue

Mots clés en anglais

Lettuce

France

Brazil

lettuce mottle virus

High-throughput sequencing

etiology