A novel emaravirus is associated with redbud yellow ringspot disease.
Yellow ringspot is the only virus-like disease reported in redbud (Cercis spp.) with symptoms including vein clearing, chlorotic ringspots and oak-leaf pattern. A putative new emaravirus was present in all trees displaying typical yellow ringspot symptoms and the name redbud yellow ringspot associated virus is proposed. The virus genome is composed of at least five RNA segments. Two coding regions were studied to determine isolate diversity with results pointing to a homogeneous virus population. Host range was evaluated using graft transmission and by testing species found in close proximity to infected trees. Mite transmission with Aculops cercidis, the predominant species found in redbud trees in the epicenter of the disease, was evaluated but was not found to be a vector of the virus. Based on this study and the accumulated knowledge on emaravirus evolution we propose that speciation is allopatric, with vectors being a major component of the process.
Department of Plant Pathology, Division of Agriculture, University of Arkansas System, Fayetteville, AR 72701, United States.
Patrick L
PL
Di Bello
Department of Plant Pathology, Division of Agriculture, University of Arkansas System, Fayetteville, AR 72701, United States.
Alma G
AG
Laney
Department of Plant Pathology, Division of Agriculture, University of Arkansas System, Fayetteville, AR 72701, United States.
Tobiasz
T
Druciarek
Department of Plant Pathology, Division of Agriculture, University of Arkansas System, Fayetteville, AR 72701, United States.
Thien
T
Ho
Department of Plant Pathology, Division of Agriculture, University of Arkansas System, Fayetteville, AR 72701, United States.
Rose C
RC
Gergerich
USDA-ARS Horticultural Crops Research Laboratory, Corvallis, OR 97330, United States.
Karen E
KE
Keller
USDA-ARS Horticultural Crops Research Laboratory, Corvallis, OR 97330, United States.
Robert R
RR
Martin
Department of Plant Pathology, Division of Agriculture, University of Arkansas System, Fayetteville, AR 72701, United States. Electronic address: itzaneta@uark.edu.
Ioannis E
IE
Tzanetakis
D002043:Bunyaviridae / Q000145:classification / Q000502:physiology*; D007887:Fabaceae / Q000821:virology; D014644:Genetic Variation; D016679:Genome, Viral; D059014:High-Throughput Nucleotide Sequencing; D058507:Host Specificity; D010641:Phenotype; D010802:Phylogeny; D010935:Plant Diseases / Q000821:virology*; D018515:Plant Leaves / Q000821:virology; D010942:Plant Viruses / Q000145:classification / Q000502:physiology*
Diversity; Emaravirus; Legume virus; Next generation sequencing; Redbud