scholarly journals First Report of Rose Rosette Disease Caused by Rose rosette virus on Knock Out Roses in Louisiana

2016 ◽  
Vol 17 (3) ◽  
pp. 195-196
Author(s):  
Raghuwinder Singh ◽  
Rodrigo Valverde ◽  
Madeline Cook ◽  
Allen Owings
Keyword(s):  
The State ◽  
Knock Out ◽  
First Report ◽  
Rose Rosette ◽  
Rose Rosette Disease

To the authors' knowledge, this is the first report of rose rosette disease caused by Rose rosette virus on Knock Out roses in Louisiana. It is difficult to assess the total value of roses in Louisiana but this disease has the potential to negatively impact the thriving rose industry in the state. Accepted for publication 23 August 2016.

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.

scholarly journals First Report of Rose Rosette Virus Associated with Rose Rosette Disease Affecting Roses in California

Plant Disease ◽  
2019 ◽  
Vol 103 (2) ◽  
pp. 380-380
Author(s):  
M. Al Rwahnih ◽  
J. Karlik ◽  
A. Diaz-Lara ◽  
K. Ong ◽  
D. Mollov ◽  
...  
Keyword(s):  
First Report ◽  
Rose Rosette ◽  
Rose Rosette Disease

scholarly journals First Report of Rose rosette virus Associated with Rose Rosette Disease Infecting Knockout Roses in Florida

Plant Disease ◽  
2014 ◽  
Vol 98 (10) ◽  
pp. 1449-1449 ◽  
Author(s):  
B. Babu ◽  
H. Dankers ◽  
E. Newberry ◽  
C. Baker ◽  
T. Schubert ◽  
...  
Keyword(s):  
Blot Hybridization ◽  
Pairwise Comparison ◽  
The United States ◽  
Rt Pcr ◽  
Specific Primers ◽  
Knock Out ◽  
First Report ◽  
Plant Pathol ◽  
Buffer Control ◽  
Rose Rosette

Roses are one of the most popular flowering shrubs in the United States, with a total wholesale value of US$194 million. Among the major states, Florida is the fourth largest producer of roses with a total value exceeding US$20 million (4). In Florida, the roses have become especially popular in recent years with the introduction of Knock Out and other shrub roses. Virus-like symptoms including witches'-broom, excessive thorns, abnormal red discoloration of shoots and foliages, distorted leaves, and deformed buds and flowers were initially observed on Knock Out roses in a commercial nursery in Quincy, FL, in November 2013. Fifteen plants out of ~250,000 plants showed these characteristic symptoms. Total RNA extracts (RNeasy Plant Mini Kit, Qiagen, Valencia, CA) from eight symptomatic and two non-symptomatic rose samples were subjected to reverse-transcription (RT) assays using SuperScript III Reverse transcriptase (Invitrogen, Life Technologies, NY) and random hexamer primers. The cDNA synthesized was then subjected to PCR assay using Platinum Taq DNA polymerase (Invitrogen, Life Technologies) and using Rose rosette virus (RRV) specific primers RRV-F and RRV-R (1), targeting the core region of the RNA1 genome of the virus. The RT-PCR assays using the specific primers produced amplicons of 375 bp, only in the symptomatic leaf samples. The obtained amplicons were PCR purified and sequenced directly (GenBank Accession Nos. KF990370 to KF990377). BLAST analysis of these sequences revealed a higher identity of 99% with the RRV (HQ871942) in the NCBI database. Pairwise comparison of the eight RRV sequences exhibited 99 to 100% identity among themselves. These results revealed the association of RRV with the symptomatic rose plants. Eight symptomatic and two non-symptomatic rose plant samples were tested for RRV using blot hybridization assay, utilizing a digoxigenin-labeled DNA probe of 511 bp, targeting the RNA1 genome of the RRV. All eight symptomatic rose plants showed a positive reaction to the RRV-specific probes, confirming the presence of RRV in the samples, while the non-symptomatic and the buffer control did not produce any reactions. Even though the virus is reported to spread by an eriophyid mite Phyllocoptes fructiphilus, thorough examination of the infected samples showed absence of the vector. The samples were also tested using RT-PCR for the presence of Rose cryptic virus (RCV) and Blackberry chlorotic ringspot virus (BCRV) using specific primers (2,3). The samples tested negative for the RCV and BCRV. This is the first report of occurrence of RRV on rose in Florida. Considering the economic importance of the rose plants and the highly destructive nature of RRV, this report underscores the need for immediate effective quarantine and management of the virus for protecting the economically important rose industry in Florida. References: (1) A. G. Laney et al. J. Gen. Virol. 92:1727, 2011. (2) S. Sabanadzovic and N. Abou Ghanem-Sabanadzovic. J. Plant Pathol. 90:287, 2008. (3) I. E. Tzanetakis et al. Plant Pathol. 55:568, 2006. (4) USDA. 2007 Census of Agriculture 3:25, Washington, DC, 2010.

scholarly journals First Report of Rose rosette virus Associated with Rose Rosette Disease in Rosa hybrida in Minnesota

2017 ◽  
Vol 18 (2) ◽  
pp. 102-103
Author(s):  
Sara Bratsch ◽  
David Zlesak ◽  
Dimitre Mollov ◽  
Benham Lockhart
Keyword(s):  
Reverse Transcription ◽  
Rosa Hybrida ◽  
Disease Symptoms ◽  
First Report ◽  
Reverse Transcription Pcr ◽  
Rose Rosette ◽  
Hybrida Plant ◽  
Rose Rosette Disease

A Rosa hybrida plant was identified with rose rosette disease symptoms and was positive for Rose rosette virus (RRV) by reverse transcription PCR. It is important to monitor routinely roses for RRV symptoms and to test and rogue symptomatic plants. This is the first report of RRV infecting roses in Minnesota.

Notes on the known species of Trichomyia Haliday of Mexico, with the establishment of a synonymy and the description of a new species (Diptera: Psychodidae)

Zootaxa ◽  
2004 ◽  
Vol 523 (1) ◽  
pp. 1 ◽  
Author(s):  
SERGIO IBÁÑEZ-BERNAL
Keyword(s):  
New Species ◽  
The State ◽  
Female Specimen ◽  
Male And Female ◽  
First Report ◽  
As Species ◽  
Species Inquirenda ◽  
A New Species

Only three species of Trichomyia Haliday have been recorded in Mexico. Trichomyia cirrata Coquillett, 1902, is recognized by its female characteristics, T. fairchildi Vargas and D az-N jera, 1953, was described based only on the wing and must be considered as species inquirenda, and T. maldonadoi (Vargas, 1953), which was described based on one female specimen. Specimens of Trichomyia collected in the states of Campeche, Yucatan, and Oaxaca, Mexico, allowed this female to be associated with the male of T. brevitarsa (Rapp, 1945), thus providing a first report of this species in Mexico. Consequently, T. maldonadoi is proposed as a synonym of T. brevitarsa. Additionally, a new species of Trichomyia from the state of Veracruz, Mexico, is described and illustrated based on the male and female characteristics.

First report on the isolation and genotyping of Toxoplasma gondii strains from free-range chickens in the state of Mato Grosso, Midwestern Brazil

2021 ◽  
pp. 101725
Author(s):  
Rute Witter ◽  
Hilda Fátima Jesus Pena ◽  
Maerle Oliveira Maia ◽  
Leodil da Costa Freitas ◽  
Sayanne Luns Hatum Almeida ◽  
...  
Keyword(s):  
Toxoplasma Gondii ◽  
The State ◽  
Mato Grosso ◽  
First Report ◽  
Free Range

scholarly journals First report of Eratyrus mucronatus, Stal, 1859, (Hemiptera, Reduviidae, Triatominae), in the State of Rondônia, Brazil

2011 ◽  
Vol 44 (4) ◽  
pp. 511-512 ◽  
Author(s):  
Dionatas Ulises de Oliveira Meneguetti ◽  
Olzeno Trevisan ◽  
Renato Moreira Rosa ◽  
Luís Marcelo Aranha Camargo
Keyword(s):  
Geographical Distribution ◽  
Chagas Disease ◽  
The State ◽  
First Report ◽  
First Time

INTRODUCTION: This paper reports, for the first time, the presence of the Eratyrus mucronatus species in the State of Rondonia, Brazil. METHODS: These specimens were caught by chance in the forest and later they were collected using luminous traps. RESULTS: After finding these specimens, the number of the Triatominae genera in Rondonia rose to four, while its species rose to seven. CONCLUSIONS: Complimentary studies will be conducted in order to allow for clearer understanding the ecology of this arthropod, its possible role in transmitting Chagas' disease and its current geographical distribution.

First Report of Sclerotinia Blight Caused by Sclerotinia sclerotiorum on Peanut in Arkansas

2017 ◽  
Vol 18 (1) ◽  
pp. 7-8
Author(s):  
T. R. Faske ◽  
G. Drennan ◽  
K. Hurd
Keyword(s):  
Sclerotinia Sclerotiorum ◽  
Negative Impact ◽  
The State ◽  
First Report ◽  
Sclerotinia Blight ◽  
Peanut Production

This is the first report of Sclerotinia blight caused by Sclerotinia sclerotiorum on peanut occurring in Arkansas. There has been renewed interest in commercial peanut production in Arkansas, and this pathogen could have a negative impact on peanut in the state.

scholarly journals Cavernicola pilosa Barber, 1937 (Hemiptera: Reduviidae: Triatominae): First report in the state of Maranhão, Brazil

Check List ◽  
2014 ◽  
Vol 10 (4) ◽  
pp. 944-946 ◽  
Author(s):  
Hélcio R. Gil-Santana ◽  
Cleber Galvão ◽  
Carlos G. C. Mielke
Keyword(s):  
The State ◽  
First Report

scholarly journals First Report of Grapevine leafroll associated virus-3 in American Vitis spp. Grapevines in Washington State

Plant Disease ◽  
2006 ◽  
Vol 90 (11) ◽  
pp. 1461-1461 ◽  
Author(s):  
M. J. Soule ◽  
K. C. Eastwell ◽  
R. A. Naidu
Keyword(s):  
New York ◽  
Economic Impact ◽  
Virus Disease ◽  
The United States ◽  
Washington State ◽  
The State ◽  
Enzyme Linked Immunosorbent Assay ◽  
Rt Pcr ◽  
First Report ◽  
Table Grapes

Washington State is the largest producer of juice grapes (Vitis labruscana ‘Concord’ and Vitis labrusca ‘Niagara’) and ranks second in wine grape production in the United States. Grapevine leafroll disease (GLD) is the most wide spread and economically significant virus disease in wine grapes in the state. Previous studies (2) have shown that Grapevine leafroll associated virus-3 (GLRaV-3) is the predominant virus associated with GLD. However, little is known about the incidence and economic impact of GLD on juice and table grapes. Because typical GLD symptoms may not be obvious among these cultivars, the prevalence and economic impact of GLD in Concord and Niagara, the most widely planted cultivars in Washington State, has received little attention from the grape and nursery industries. During the 2005 growing season, 32 samples from three vineyards and one nursery of ‘Concord’ and three samples from one nursery of ‘Niagara’ were collected randomly. Petiole extracts were tested by single-tube reverse transcription-polymerase chain reaction (RT-PCR; 3) with primers LC 1 (5′-CGC TAG GGC TGT GGA AGT ATT-3′) and LC 2 (5′-GTT GTC CCG GGT ACC AGA TAT-3′), specific for the heat shock protein 70 homologue (Hsp70h gene) of GLRaV-3 (GenBank Accession No. AF037268). One ‘Niagara’ nursery sample and eleven ‘Concord’ samples from the three vineyards tested positive for GLRaV-3, producing a single band of the expected size of 546 bp. The ‘Niagara’ and six of the ‘Concord’ RT-PCR products were cloned in pCR2.1 (Invitrogen Corp, Carlsbad, CA) and the sequences (GenBank Accession Nos. DQ780885, DQ780886, DQ780887, DQ780888, DQ780889, DQ780890, and DQ780891) compared with the respective sequence of a New York isolate of GLRaV-3 (GenBank Accession No. AF037268). The analysis revealed that GLRaV-3 isolates from ‘Concord’ and ‘Niagara’ share nucleotide identities of 94 to 98% and amino acid identities and similarities of 97 to 98% with the Hsp70h gene homologue of the New York isolate of GLRaV-3. Additional testing by double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) using antibodies specific to GLRaV-3 (BIOREBA AG, Reinach, Switzerland) further confirmed these results in the ‘Niagara’ and two of the ‘Concord’ isolates. GLRaV-3 has previously been reported in labrusca cvs. Concord and Niagara in western New York (4) and Canada (1), but to our knowledge, this is the first report of GLRaV-3 in American grapevine species in the Pacific Northwest. Because wine and juice grapes are widely grown in proximity to each other in Washington State and grape mealybug (Pseudococcus maritimus), the putative vector of GLRaV-3, is present in the state vineyards, further studies will focus on the role of American grapevine species in the epidemiology of GLD. References: (1) D. J. MacKenzie et al. Plant Dis. 80:955, 1996. (2) R. R. Martin et al. Plant Dis. 89:763, 2005. (3) A. Rowhani et al. ICGV, Extended Abstracts, 13:148, 2000. (4) W. F. Wilcox et al. Plant Dis. 82:1062, 1998.

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