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ARS Home » Northeast Area » Washington, D.C. » National Arboretum » Floral and Nursery Plants Research » Research » Publications at this Location » Publication #394529

Research Project: Detection, Biology, and Genomics of New and Emerging Viral and Bacterial Diseases of Ornamental Plants

Location: Floral and Nursery Plants Research

Title: Rose Rosette Disease: A Diagnostic Guide

item CLAROS, NICOLAS - Universidad De Los Andes
item SHIRES, MADALYN - Washington State University
item Mollov, Dimitre
item Hammond, John
item Jordan, Ramon
item OCHOA-CORONA, FRANCISCO - Oklahoma State University
item OLSON, JENNIFER - Oklahoma State University
item ONG, KEVIN - Texas A&M University
item SALAMANCA, RODRIGUEZ - Iowa State University

Submitted to: Plant Health Progress
Publication Type: Review Article
Publication Acceptance Date: 6/12/2022
Publication Date: 6/13/2022
Citation: Claros, N.A., Shires, M., Mollov, D.S., Hammond, J., Jordan, R.L., Ochoa-Corona, F., Olson, J., Ong, K., Salamanca, R. 2022. Rose Rosette Disease: A Diagnostic Guide. Plant Health Progress.

Interpretive Summary:

Technical Abstract: Roses are one of the most important cultivated ornamental plants worldwide, grown for cut flowers and attractive perennial landscape plants. Roses comprise two-thirds of the international cut floral industry and exceed $40 billion in sales per year. Garden shrub roses, which form the cornerstone of the landscape industry, generated a wholesale US domestic production valued at more than $156 million in 2019, with 1,469 growers producing 25.1 million plants. Florist potted roses totaled an additional $25.9M, cut roses added $14.2M, and rose propagative landscape materials added another $10.3M in wholesale. Over the past several decades, Rose Rosette Disease (RRD) has become very serious and threatens to decimate the US rose industry. Rose production business in the US has reported losses of up to 25% in gross revenue due to RRD. The causal agent, rose rosette virus (RRV, Emaravirus), can be transmitted by grafting infected material onto clean stock materials and is naturally transmitted by wind-blown eriophyid mites (Phyllocoptes fructiphilus). Unlike other rose diseases, it can kill a rose within two to three years of infection. The only strategy currently available for disease management is early identification and eradication of the infected plants, thereby limiting its potential spread. Key to this effort is the development of efficient and affordable diagnostic tools to enable accurate detection of the virus. This Diagnostic Guide reviews and describes the current state of the art. It includes information on disease hosts; symptoms and signs of infection; and host, pathogen, and vector biology, and geographical distribution. A more in-depth review of the materials and methods (including images, assay diagrams, and RT-PCR primer details) used in collecting the mite vector and detecting the viral pathogen is presented. This Rose Rosette Disease Diagnostic Guide should be useful to public and private plant health practitioners, including research scientists, extension agents, and commercial and public diagnostic labs and clinics.