New rose rosette research
New research often will appear as a paper at a meeting before final publication in a scientific journal.
Here is a recent meeting abstract:
"Are emaraviruses mite viruses? The Rose rosette paradigm
Authors: A. G. LANEY (2), E. W. Kitajima (1), I. E. Tzanetakis (2)
(1) Escola Superior de Agricultura, Piracicaba, SP, Brazil; (2) University of Arkansas, Fayetteville, AR, U.S.A.
Rose rosette (RR) is a devastating rose disease, first described in the 1940s. RR is prevalent east of the Mississippi River and is characterized by elongated stems, malformed flowers and leaves, excessive thorns and witches� broom culminating in plant death in a few years. In the Midwest and the Southern United States, the main host is an invasive species, Rosa multiflora Thunb., though cultivated roses are also afflicted. RR has previously been shown to be transmitted by the eriophyid mite Phyllocoptes fructiphilus and has been proposed as a biological control agent for R. multiflora. Recently, a new member of the genus Emaravirus (family Bunyaviridae), named Rose rosette virus (RRV), has been found in close association with RR symptomatic roses.
Surprisingly, little diversity was seen in virus populations collected from eight different states. Given the low diversity and the fact that the genus Emaravirus belongs to the family Bunyaviridae, members of which replicate in their arthropod vector, it has been hypothesized that RRV replicates in its vector, P. fructiphilus. In order to facilitate testing this hypothesis, a quantitative RT-PCR assay was developed for both the genomic and virus complementary RNA. P. fructiphilus mites were collected from virus-positive R. multiflora and total nucleic acids were extracted. The RNA was then subjected to quantitative RT-PCR for the genomic or virus complimentary RNA strands. Additionally, the presence of capped virus mRNA in the mites was investigated using 5�RACER. The replication of RRV in its vector makes using RRV as a biological control agent unwise and care should be given to prevent the spread of RRV and its vector outside its current geographic range."
Here is a link that might be useful: 2012 Southern Division Meeting Abstracts