scholarly journals Facing Rose rosette virus : A risk to European rose cultivation

2020 ◽  
Vol 69 (9) ◽  
pp. 1603-1617
Author(s):  
Ines Vazquez‐Iglesias ◽  
Francisco M. Ochoa‐Corona ◽  
Joe Tang ◽  
Rebekah Robinson ◽  
Gerard R. G. Clover ◽  
...  
Keyword(s):  
Rose Rosette

scholarly journals A discovery 70 years in the making: characterization of the Rose rosette virus

2011 ◽  
Vol 92 (7) ◽  
pp. 1727-1732 ◽  
Author(s):  
Alma G. Laney ◽  
Karen E. Keller ◽  
Robert R. Martin ◽  
Ioannis E. Tzanetakis
Keyword(s):  
Rna Virus ◽  
Causal Agent ◽  
Low Diversity ◽  
The Usa ◽  
Rose Rosette ◽  
Diversity Studies ◽  
The Rose ◽  
Negative Sense ◽  
Eastern Half

Rose rosette was first described in the early 1940s and it has emerged as one of the most devastating diseases of roses. Although it has been 70 years since the disease description, the rosette agent is yet to be characterized. In this communication, we identify and characterize the putative causal agent of the disease, a negative-sense RNA virus and new member of the genus Emaravirus. The virus was detected in 84/84 rose rosette-affected plants collected from the eastern half of the USA, but not in any of 30 symptomless plants tested. The strong correlation between virus and disease is a good indication that the virus, provisionally named Rose rosette virus, is the causal agent of the disease. Diversity studies using two virus proteins, p3 and p4, demonstrated that the virus has low diversity between isolates as they share nucleotide identities ranging from 97 to 99%.

Impact of Foliar Application of Acibenzolar S-Methyl on Rose Rosette Disease and Rose Plant Quality

Plant Disease ◽  
2021 ◽  
Author(s):  
Binoy Babu ◽  
Mathews L Paret ◽  
Xavier Martini ◽  
Gary Knox ◽  
Barron Riddle ◽  
...  
Keyword(s):  
Plant Growth ◽  
Disease Severity ◽  
Untreated Control ◽  
Systemic Acquired Resistance ◽  
Foliar Application ◽  
Acquired Resistance ◽  
Water Control ◽  
Knock Out ◽  
Rose Rosette ◽  
Rose Rosette Disease

Rose rosette disease (RRD) caused by rose rosette emaravirus (RRV) is a major issue in the U.S. rose industry with no effective method for its management. This study evaluated the effect of foliar application of Acibenzolar S-methyl (ASM), a plant systemic acquired resistance inducer in reducing RRD disease severity on Rosa species cv. Radtkopink (Pink Double Knock Out®) under greenhouse condition, and the effect of ASM on plant growth under commercial nursery production conditions. ASM at 50 or 100 mg/L at weekly intervals significantly reduced RRD severity compared to the untreated control in two of the three greenhouse trials (P < 0.05). The plants in these trials were subsequently pruned and observed for symptoms, which further indicated that application of ASM at 50 or 100 mg/L lowered disease severity compared to the untreated control (P < 0.05) in these two trials. Plants treated with ASM at 50 or 100 mg/L had delayed incidence of RRD compared to the non-treated controls. Plants treated with ASM at 50 or 100 mg/L rate in all three trials either did not have RRV present or the virus was present in fewer leaf samples than untreated controls as indicated by RT-qPCR analysis. Overall, plants treated with ASM at 50 mg/L had 36-43% reduced RRD incidence compared to the water control. The treatment of two cultivars of rose, ‘Radtkopink’ and ‘Meijocos’ (Pink Drift®), with weekly foliar applications of ASM at three rates (0.5, 0.75 and 1.0 oz/A) indicated that ASM had no negative effect on flowering or plant growth at even the highest rate.

When the Trauma Draws a Rose: Rosette Cataract

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Madbouhi K ◽  
◽  
Cherkaoui O ◽  
Keyword(s):  
Visual Acuity ◽  
Emergency Room ◽  
Male Patient ◽  
Slit Lamp ◽  
Posterior Subcapsular Cataract ◽  
Slit Lamp Examination ◽  
Corrected Visual Acuity ◽  
The Hours ◽  
Rose Rosette

A 40-year-old male patient referred to the ophthalmologic emergency room for complaints of diminution of vision in the left eye since three months after a trauma. Examination of the left eye showed a corrected visual acuity of 20/70. Slit-lamp examination revealed a rosette cataract (Figure 1). The patient underwent phacoemulsification with implantation of an IOL in the bag. The rosette cataract is a posterior subcapsular cataract due to a violent contusion with a closed globe. It can develop in the hours that follow, or on the contrary several years later.

scholarly journals Epidemiology of Blackberry chlorotic ringspot virus

Plant Disease ◽  
2014 ◽  
Vol 98 (4) ◽  
pp. 547-550 ◽  
Author(s):  
Bindu Poudel ◽  
Thien Ho ◽  
Alma Laney ◽  
Archana Khadgi ◽  
Ioannis E. Tzanetakis
Keyword(s):  
Seed Transmission ◽  
Ringspot Virus ◽  
Control Measures ◽  
Breeding Programs ◽  
Specialty Crops ◽  
Tree Fruit ◽  
Blackberry Yellow Vein Disease ◽  
Rose Rosette ◽  
Infected Material ◽  
Vein Disease

The pollen- and seed-borne ilarviruses pose a substantial threat to many specialty crops, including berries, rose, and tree fruit, because there are no efficient control measures other than avoidance. The case of Blackberry chlorotic ringspot virus (BCRV) is of particular interest because the virus has been found to be an integral part of blackberry yellow vein disease and is widespread in rose plants affected by rose rosette disease. This study provides insight into the epidemiology of BCRV, including incidence in blackberry and rose; host range, with the addition of apple as a host of the virus; and seed transmission that exceeded 50% in rose. Sensitive detection protocols that can be used to avoid dissemination of infected material through nurseries and breeding programs were also developed.

Rose rosette virus: An emerging pathogen of garden roses in India

2017 ◽  
Vol 46 (3) ◽  
pp. 223-226 ◽  
Author(s):  
P. Chakraborty ◽  
S. Das ◽  
B. Saha ◽  
A. Karmakar ◽  
D. Saha ◽  
...  
Keyword(s):  
Emerging Pathogen ◽  
Rose Rosette

scholarly journals A simplified strategy for sensitive detection of Rose rosette virus compatible with three RT-PCR chemistries

2016 ◽  
Vol 232 ◽  
pp. 47-56 ◽  
Author(s):  
Shefali Dobhal ◽  
Jennifer D. Olson ◽  
Mohammad Arif ◽  
Johnny A. Garcia Suarez ◽  
Francisco M. Ochoa-Corona
Keyword(s):  
Sensitive Detection ◽  
Rt Pcr ◽  
Rose Rosette

IDENTIFICATION OF THE ROSE ROSETTE DISEASE AGENT

2015 ◽  
pp. 295-298 ◽  
Author(s):  
P.L. Di Bello ◽  
T. Ho ◽  
I.E. Tzanetakis
Keyword(s):  
Disease Agent ◽  
Rose Rosette ◽  
The Rose ◽  
Rose Rosette Disease

scholarly journals Evaluation of Rosa Species Accessions for Resistance to Eriophyid Mites1

2019 ◽  
Vol 37 (4) ◽  
pp. 108-112
Author(s):  
K. M. Solo ◽  
S. B. Collins ◽  
L. G. Schneider ◽  
M. R. Hajimorad ◽  
F. A. Hale ◽  
...  
Keyword(s):  
High Variability ◽  
Rosa Rugosa ◽  
Eriophyid Mite ◽  
Chestnut Rose ◽  
Rosa Roxburghii Tratt ◽  
Rosa Roxburghii ◽  
Rose Rosette ◽  
Rosa Species ◽  
Forest Farm ◽  
Rose Rosette Disease

Abstract Rose rosette disease, caused by rose rosette virus (RRV), is an epidemic affecting nearly every rose cultivar in the United States. The only hosts for Phyllocoptes fructiphilus, the eriophyid mite that vectors RRV, are Rosa species. Eighteen Rosa species were evaluated for mite resistance by collecting foliage samples from July to November in 2016 and 2017, from which mites were extracted. Mites were isolated through a series of sieves and counted using a stereomicroscope. The response variable was expressed as the number of mites per gram of optimal rose tissue. Mite data were evaluated to determine the peak week for mite populations for each year. The mite populations varied by rose species (α = 0.05) in 2016 but not 2017. Due to high variability in mite counts, the species were not as clearly distinguishable as expected. This high variability is likely due to factors such as differential growth rates of the roses, weather, presence of RRV in the rose, and the quality of the tissue collected throughout the season. Experimental design revisions are proposed for future studies looking at Rosa species resistance to eriophyid mite populations. Index words: rose rosette virus, rose rosette disease, Phyllocoptes fructiphilus Keifer, virus, vector. Species used in this study: Phyllocoptes fructiphilus (Keifer), Prairie Rose [Rosa arkansana (Porter), Forest Farm]; Carolina Rose [Rosa carolina (L.), Forest Farm]; Rosa clinophylla (Thory), Rogue Valley Rose; White Prairie Rose [Rosa foliolosa (Nutt.), Rogue Valley Rose]; White Prairie Rose [Rosa foliolosa (Nutt.) Antique Rose Emporium]; Father Hugo Rose [Rosa hugonis, Rogue Valley Rose]; Musk Rose [Rosa moschata (J. Herrm.), Antique Rose Emporium]; Multiflora Rose [Rosa multiflora (Thunb.)]; Shining Rose [Rosa nitida (Willd.), Rogue Valley Rose]; Shining Rose [Rosa nitida (Willd.), Antique Rose Emporium]; Nootka Rose [Rosa nutkana (C. Presl.), Rogue Valley Rose]; Tea Rose [Rosa odorata (Andrews), Foundation Plant Services, Davis, CA]; Swamp Rose [Rosa palustris (Marshall), Antique Rose Emporium]; Swamp Rose [Rosa palustris (Marshall), Ever Blooming Antique Rose Emporium]; Chestnut Rose [Rosa roxburghii (Tratt.), Antique Rose Emporium]; ‘Plena' Chestnut Rose [Rosa roxburghii (Tratt.), Rogue Valley Rose]; Rugosa Rose [Rosa rugosa (Thunb.), Bailey's Nursery]; ‘Alba' Rugosa Rose [Rosa rugosa (Thunb.), Bailey's Nursery]; Climbing Prairie Rose [Rosa setigera (Michx.), Antique Rose Emporium]; Rosa soulieana (Crép.), Ralph Moore; Virginia Rose [Rosa virginiana (Mill.), Forest Farm]; Porterfolia Memorial Rose [Rosa wichuraiana (Crép.), Antique Rose Emporium]; Mountain Woods' Rose [Rosa woodsii (Lindl.), Rogue Valley Rose].

scholarly journals Characteristics of virus and virus-like rose degeneration and dieback diseases

2013 ◽  
Vol 57 (1-2) ◽  
pp. 89-98
Author(s):  
Marek S. Szyndel
Keyword(s):  
Causal Agent ◽  
Rose Flower ◽  
Rose Rosette ◽  
Colour Break ◽  
Leaf Curl

Presented review of rose diseases, associated with the plant degeneration symptoms, includes rose streak, rose colour break, rose rosette or rose witches' broom, rose dieback, rose wilt, rose stunt, rose leaf curl, rose spring dwarf, rose little leaf, rose "frisure", rose bud proliferation and rose flower proliferation. Most of these disorders are characterized by stunting or dwarfing of plants accompanied by a partial wilt and dieback of shoots. Proliferation and epinasty often occurred. Apart from detected viruses (TSV. SLRSV) parts of degeneration syndrome have been transmitted by grafting other have failed to achieve any transmission of the causal agent. It seems likely that rose degeneration disorders in spite of symptom similarities are due to a complex of interacting factors including probably viruses.

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