Alfalfa mosaic virus (AMV): genetic diversity and a new natural host

Alfalfa mosaic virus (AMV) is a plant virus belonging to the genus Alfamovirus in the family Bromoviridae . AMV occurs worldwide and is one of the most important viruses affecting a large number of plant species, mainly commercially important crops. In this study, we report the molecular analysis of...

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Veröffentlicht in:Journal of plant pathology Jg. 104; H. 1; S. 349 - 356
Hauptverfasser: Trucco, Verónica, Castellanos Collazo, Onias, Vaghi Medina, Carlos Gastón, Cabrera Mederos, Dariel, Lenardon, Sergio, Giolitti, Fabian
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Cham Springer International Publishing 01.02.2022
Schlagworte:
alfalfa
Alfalfa mosaic virus
amino acids
Argentina
Biomedical and Life Sciences
Dichondra
epidemiology
genes
genetic variation
host plants
host range
Lavandula angustifolia
Life Sciences
Medicago sativa
phylogeny
plant pathology
Plant Sciences
Short Communication
Trifolium pratense
viruses
Argentina
Alfalfa mosaic virus
Phylogenetic relationships
Plant host
Genetic diversity
ISSN:1125-4653, 2239-7264
Online-Zugang:Volltext
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Zusammenfassung:Alfalfa mosaic virus (AMV) is a plant virus belonging to the genus Alfamovirus in the family Bromoviridae . AMV occurs worldwide and is one of the most important viruses affecting a large number of plant species, mainly commercially important crops. In this study, we report the molecular analysis of the CP gene sequences of 23 AMV isolates obtained from different geographical areas and hosts: alfalfa ( Medicago sativa ), kidneyweed ( Dichondra repens ), red clover ( Trifolium pratense ) and Lavandin Super ( Lavandula angustifolia x L. latifolia) . The comparison among the Argentine CP sequences showed identity values ranging from 95.6 to 100% at the nucleotide level and from 95.9 to 100% at the predicted amino acid level. Phylogenetic studies based on complete nucleotide sequences of CP showed that all Argentine isolates were included in subgroup I of AMV isolates, along with other isolates from alfalfa. No clear relationship between AMV isolates and geographical or host origin was observed. This is the first report of kidneyweed as a natural host of AMV worldwide, and of AMV infection in red clover and Lavandin Super in Argentina. This work provides more evidence of CP variability between AMV isolates and presents a new AMV plant host, expanding the host range of this virus. Therefore, AMV represents a threat to the successful production of several economically important crops in Argentina. Further studies are necessary for a better understanding of the role of these host species in AMV epidemiology.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1125-4653
2239-7264
DOI:10.1007/s42161-021-00961-8