Ecology of Yellow Dwarf Viruses in Crops and Grasslands: Interactions in the Context of Climate Change

Peters, Jasmine; Aguirre, Beatriz A; DiPaola, Anna; Power, Alison G.

doi:10.1146/annurev-phyto-020620-101848

Cited by 10 publications

(3 citation statements)

References 132 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 57 ], have revealed the extent in which closterovirids prevail in wheat and other cereal crop species. These cereal-infecting closterovirids may attract further attention from plant virologists and plant pathologists as some aphid-borne cereal pathogens, as demonstrated by the aphid-transmitted viruses of yellow dwarf cereal diseases, have the potential to cause pandemics or epidemics due to global warming and increasing air temperatures [ 3 , 58 , 59 ].…”

Section: Discussionmentioning

confidence: 99%

Discovery and Genome Characterization of a Closterovirus from Wheat Plants with Yellowing Leaf Symptoms in Japan

et al. 2023

View full text Add to dashboard Cite

Many aphid-borne viruses are important pathogens that affect wheat crops worldwide. An aphid-transmitted closterovirus named wheat yellow leaf virus (WYLV) was found to have infected wheat plants in Japan in the 1970s; however, since then, its viral genome sequence and occurrence in the field have not been investigated. We observed yellowing leaves in the 2018/2019 winter wheat-growing season in an experimental field in Japan where WYLV was detected five decades ago. A virome analysis of those yellow leaf samples lead to the discovery of a closterovirus together with a luteovirus (barley yellow dwarf virus PAV variant IIIa). The complete genomic sequence of this closterovirus, named wheat closterovirus 1 isolate WL19a (WhCV1-WL19a), consisted of 15,452 nucleotides harboring nine open reading frames. Additionally, we identified another WhCV1 isolate, WL20, in a wheat sample from the winter wheat-growing season of 2019/2020. A transmission test indicated that WhCV1-WL20 was able to form typical filamentous particles and transmissible by oat bird-cherry aphid (Rhopalosiphum pad). Sequence and phylogenetic analyses showed that WhCV1 was distantly related to members of the genus Closterovirus (family Closteroviridae), suggesting that the virus represents a novel species in the genus. Furthermore, the characterization of WhCV1-WL19a-derived small RNAs using high-throughput sequencing revealed highly abundant 22-nt-class small RNAs potentially derived from the 3′-terminal end of the WhCV1 negative-strand genomic RNA, indicating that this terminal end of the WhCV1 genome is likely particularly targeted for the synthesis of viral small RNAs in wheat plants. Our results provide further knowledge on closterovirus diversity and pathogenicity and suggest that the impact of WhCV1 on wheat production warrants further investigations.

show abstract

Section: Discussionmentioning

confidence: 99%

Discovery and Genome Characterization of a Closterovirus from Wheat Plants with Yellowing Leaf Symptoms in Japan

et al. 2023

View full text Add to dashboard Cite

show abstract

“…able to endure environmental flux (66,77,85). From this, we may need to reframe our definition of (the ecology of ) disease, to allow that infection(s) may benefit the population, although individuals may fare poorly.…”

Section: Coevolution Of Viruses and Host R-genesmentioning

confidence: 99%

The Past Is Present: Coevolution of Viruses and Host Resistance Within Geographic Centers of Plant Diversity

Scholthof

2023

Annu. Rev. Phytopathol.

View full text Add to dashboard Cite

Understanding the coevolutionary history of plants, pathogens, and disease resistance is vital for plant pathology. Here, I review Francis O. Holmes's work with tobacco mosaic virus (TMV) framed by the foundational work of Nikolai Vavilov on the geographic centers of origin of plants and crop wild relatives (CWRs) and T. Harper Goodspeed's taxonomy of the genus Nicotiana. Holmes developed a hypothesis that the origin of host resistance to viruses was due to coevolution of both at a geographic center. In the 1950s, Holmes proved that genetic resistance to TMV, especially dominant R-genes, was centered in South America for Nicotiana and other solanaceous plants, including Capsicum, potato, and tomato. One seeming exception was eggplant ( Solanum melongena). Not until the acceptance of plate tectonics in the 1960s and recent advances in evolutionary taxonomy did it become evident that northeast Africa was the home of eggplant CWRs, far from Holmes's geographic center for TMV– R-gene coevolution. Unbeknownst to most plant pathologists, Holmes's ideas predated those of H.H. Flor, including experimental proof of the gene-for-gene interaction, identification of R-genes, and deployment of dominant host genes to protect crop plants from virus-associated yield losses. Expected final online publication date for the Annual Review of Phytopathology, Volume 61 is September 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

show abstract

“…The Tombusviridae family contains over 100 virus species (tombusvirids) in eighteen genera officially named by the International Committee on Virus Taxonomy (ICTV). This large and diverse family includes many economically costly pathogens, such as maize chlorotic mottle virus, which has devastated maize production in mixed infection with a potyvirus in East Africa (Redinbaugh and Stewart, 2018), and the barley yellow dwarf viruses which comprise the most ubiquitous viruses of wheat, barley and oat, worldwide (Trebicki et al, 2015;Peters et al, 2022). In addition, tombusvirids have proved to be excellent models.…”

Section: Introductionmentioning

confidence: 99%

A proposed newTombusviridaegenus featuring extremely long 5’ untranslated regions and a luteo/polerovirus-like gene block

Lozier,

Hill,

Semmann

et al. 2024

Preprint

View full text Add to dashboard Cite

SummaryTombusviridaeis a large family of single-stranded, positive-sense RNA plant viruses with uncapped, non-polyadenylated genomes encoding 5-7 open reading frames (ORFs). Previously, we discovered, by high-throughput sequencing of maize and teosinte RNA, a novel genome of a virus we call Maize-associated tombusvirus (MaTV). Here we determined the precise termini of the MaTV genome by using 5’ and 3’ rapid amplification of cDNA ends (RACE). In GenBank, we discovered eleven other nearly complete viral genomes with MaTV-like genome organizations and related RNA-dependent RNA polymerase (RdRp) sequences. These genomes came from diverse plant, fungal, invertebrate and vertebrate organisms, and some have been found in multiple organisms across the globe. The available 5’ untranslated regions (UTRs) of these genomes are remarkably long: at least 438 to 727 nucleotides (nt), in contrast to those of other tombusvirids, which are <150 nt. Moreover these UTRs contain 6 to 12 AUG triplets that are unlikely to be start codons, because - with the possible exception of MaTV - there are no large or conserved ORFs in the 5’ UTRs. Such features suggest an internal ribosome entry site (IRES), but we found no conserved secondary structures. In the 50 nt upstream of and adjacent to the ORF1 start codon, the 5’ UTR was cytosine-rich and guanosine-poor. As in most tombusvirids, ORF2 (RdRp gene) appears to be translated by in-frame ribosomal readthrough of the ORF1 stop codon. Indeed, in all twelve genomes we identified RNA structures known in other tombusviruses to facilitate this readthrough. ORF5 is predicted to be translated by readthrough of the ORF3 (coat protein gene) stop codon as in genusLuteovirus. The resulting readthrough domains are highly divergent. ORF4 overlaps with ORF3 and may initiate with a non-AUG start codon. We also found no obvious 3’ cap-independent translation elements, which are present in other tombusvirids. The twelve genomes diverge sufficiently from other tombusvirids to warrant classification in a new genus. Because they contain two leaky stop codons and a potential leaky start codon, we propose to name this genusRimosavirus(rimosa= leaky in Latin).

show abstract

Ecology of Yellow Dwarf Viruses in Crops and Grasslands: Interactions in the Context of Climate Change

Cited by 10 publications

References 132 publications

Discovery and Genome Characterization of a Closterovirus from Wheat Plants with Yellowing Leaf Symptoms in Japan

Discovery and Genome Characterization of a Closterovirus from Wheat Plants with Yellowing Leaf Symptoms in Japan

The Past Is Present: Coevolution of Viruses and Host Resistance Within Geographic Centers of Plant Diversity

A proposed newTombusviridaegenus featuring extremely long 5’ untranslated regions and a luteo/polerovirus-like gene block

Contact Info

Product

Resources

About