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Identification of a Second Vector for Rose Rosette Virus
Tobiasz Druciarek1, Mariusz Lewandowski2, Ioannis Tzanetakis1
1Department of Entomology and Plant Pathology, Division of Agriculture, University of Arkansas System Fayetteville, Fayetteville, AR 72701, U.S.A.
Plant Disease
|February 1, 2023
Summary
Rose rosette disease, caused by rose rosette emaravirus (RRV), is now known to be vectored by a second eriophyoid mite species, *Phyllocoptes arcani*. This discovery impacts understanding of RRV epidemiology and spread in ornamental plants.
Area of Science:
- Plant Pathology
- Entomology
- Virology
Background:
- Rose rosette disease (RRD) significantly impacts the ornamental horticulture industry in the United States.
- The disease is caused by the rose rosette emaravirus (RRV).
- RRV transmission is primarily attributed to the eriophyoid mite, *Phyllocoptes fructiphilus*.
Purpose of the Study:
- To investigate the vector competency of two additional *Phyllocoptes* mite species, *P. adalius* and *P. arcani*, for RRV.
- To determine the transmission efficiency of RRV by these potential new vectors.
Main Methods:
- Single and multiple mite transfer experiments were conducted using *P. adalius* and *P. arcani*.
- Mite vector competency and RRV transmission rates were assessed for each species.
Main Results:
- The eriophyoid mite species *Phyllocoptes arcani* was identified as a second vector of RRV.
- *P. adalius* did not demonstrate vector competency for RRV in these experiments.
Conclusions:
- The identification of *P. arcani* as a second RRV vector has significant implications for understanding the epidemiology of rose rosette disease.
- The presence of *P. arcani* in regions where *P. fructiphilus* is absent could facilitate RRV spread, impacting disease management strategies.
