Lettuce Mosaic Virus Positive Results

Total Page：16

File Type：pdf, Size：1020Kb

Lettuce Mosaic Virus Positive Results The County of Imperial requires that all lettuce seed sold to be planted in Imperial County be tested for lettuce mosaic disease. In the ordinance the species and varieties of lettuce (Lactuca sativa L.) includes head, romaine, leaf, endive and chicory. While endive and chicory are included in the ordinance and are hosts of LMV, the disease is not seed-borne in either of them. They are not subject to testing.Imperial Valley Vegetables Growers Association is the designated coordinator for this testing. All seed productions company should conclude a MOU with IVVGA prior to any testing. Once that MOU is in place, instructions for shipping seed for testing and the process will be provided. We appreciate the cooperation of the industry in this important requirement. As of December 31, 2017, the following seed samples tested positive and cannot be sold or planted in Imperial County. One seed in a sample of 30,000 creates a positive result. Company Variety Lot Number Result Year Central Valley Seeds CVX 47-M 210774-01 5/30,000 2012 Central Valley Seeds CVX 47-M 212774-02J 7/30,000 2012 Nunhems/Bayer Crop Regency 21749901001 5/30,000 2012 Science Vegetable Seeds Seminis Vegetable Grizzly 101711791/01-99 1/30,000 2012 Seeds Seminis Vegetable Grizzly 101711791/02 1/30,000 2012 Seeds Shamrock Seed MasterBlaster 300054-14093 HVY 100%* 2014 Company, Inc. Seminis Vegetable Bubba 102326293-2 2/30,000 2014 Seeds Tozer Seeds America Wigmore 5435992 1/30,000 2015 Lettuce Mosaic Virus Positive Results Company Variety Lot Number Result Year Seminis Vegetable BraveHeart 102423815-1 1/30,000 2015 Seeds Shamrock Seed MasterBlaster 300054-15096 23/30,000 2015 Company, Inc. Gowan Seed Company T & T Marsala V103635 203/30,000 2015 Gowan Seed Company T & T Smeraldo L15041 2/30,000 2015 Shamrock Seed Serengeti 30765-15084 2/30,000 2015 Company, Inc. Shamrock Seed Mainman 300053-15095 9/30,000 2015 Company, Inc. Enza Zaden North Diamond 892300 4/30,000 2015 America Enza Zaden North Diamond 940188 5/30,000 2015 America Enza Zaden North Tellmark 892296 1/30,000 2015 America Enza Zaden North Diamond 2312016 7/30,000 2016 America Central Valley Seeds EXP-16 2154094-01R 1/30,000 2016 Central Valley Seeds CVX -16 215408-01J 1/30,000 2016 Central Valley Seeds CVX -16 215408-01J (a second 1/30,000 2016 lot sample) Shamrock Seed Serengeti 30765-15085 Med-Hvy 2/30,000 2016 Company, Inc Shamrock Seed Serengeti 30765-15085 Med-Hvy 2/30,000 2016 Company, Inc Lettuce Mosaic Virus Positive Results Company Variety Lot Number Result Year Shamrock Seed Mojito 30384-16072 3/30,000 2017 Company, Inc Progeny Advanced Dover 569-61-61 2/30,000 2017 Genetics End of List as of December 31, 2017.

Copy Link

Recommended publications

Aphid-Transmitted Viruses in Vegetable Crops Department of Departmentof Integrated Virus Disease Management
Agri-Science Queensland Employment, Economic Development and Innovation and Development Economic Employment, Aphid-transmitted viruses in vegetable crops Department of Departmentof Integrated virus disease management The majority of viruses infecting plants are spread by Non-persistent transmission insects, and aphids are the most common group of • It takes less than one minute of feeding for an virus vectors or carriers. All potyviruses (the largest aphid to acquire the virus and the same short time group of plant viruses) are transmitted by aphids. to infect another plant when feeding. Aphids are sap-sucking insects and have piercing, • Viruses remain viable on aphids mouthparts for a sucking mouthparts. Their mouthparts include a few hours only. needle-like stylet that allows the aphid to access • When an aphid loses the virus from its mouthparts and feed on the contents of plant cells. During when feeding it has to feed again on another feeding, aphids simultaneously ingest sap contents infected plant to obtain a new ‘charge’ of virus and inject saliva, which can contain viruses if the before it can infect other plants. aphid has previously fed on an infected plant. Persistent transmission The structure of aphid mouthparts, their searching • It takes several hours of feeding for an aphid to behaviour for host plants, the range of available acquire a virus. host plants and high reproductive rates contribute to • The virus must circulate through the aphid’s body the efficiency of aphids to act as virus carriers. to the salivary glands before transmission can Aphid transmission occur. This period is at least 12 hours.
[Show full text]
Plant Pathology Circular No. 275 Fla. Dept. Agric. & Consumer Serv
Plant Pathology Circular No. 275 Fla. Dept. Agric. & Consumer Serv. September 1985 Division of Plant Industry LETTUCE MOSAIC VIRUS Gail C. Wislerl Lettuce mosaic virus (LMV) was first reported in 1921 in Florida by Jagger (6). Due to transmission of LMV through seed, it has now been reported in at least 14 countries (4) or wherever lettuce is commercially grown. Although specific leaf symptoms are difficult to detect in mature lettuce, the overall effect on lettuce production is significant in terms of stunting, the absence of heading, and early bolting. The 50-million dollar per year Florida lettuce industry was severely threatened during the early 1970's by an outbreak of LMV. Fortunately, the lettuce growers in California had already established a viable indexing program for control of LMV through years of observation, experimentation, and research. This program was designed to establish the minimum allowable percentage of infected seed in commercial seedlots. It had been demonstrated that even with 1-3% infected seed, the spread by aphids could lead to 100% infection by harvest time. Research has shown that seed infection greater than even 0.1% gives inadequate disease control (2). Therefore, the allowable tolerance under Florida law adopted in 1973 and by California at an earlier date is less than one infected seed in 30,000. If one seed in 30,000 is infected, the entire seedlot is rejected. SYMPTOMS: Symptoms of LMV are most easily detected in young plants. First seen is an inward rolling of the leaves along the long axis, and the first true leaf is irregularly shaped and slightly lobed.
[Show full text]
Aphid Transmission of Potyvirus: the Largest Plant-Infecting RNA Virus Genus
Supplementary Aphid Transmission of Potyvirus: The Largest Plant-Infecting RNA Virus Genus Kiran R. Gadhave 1,2,*,†, Saurabh Gautam 3,†, David A. Rasmussen 2 and Rajagopalbabu Srinivasan 3 1 Department of Plant Pathology and Microbiology, University of California, Riverside, CA 92521, USA 2 Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC 27606, USA; [email protected] 3 Department of Entomology, University of Georgia, 1109 Experiment Street, Griffin, GA 30223, USA; [email protected] * Correspondence: [email protected]. † Authors contributed equally. Received: 13 May 2020; Accepted: 15 July 2020; Published: date Abstract: Potyviruses are the largest group of plant infecting RNA viruses that cause significant losses in a wide range of crops across the globe. The majority of viruses in the genus Potyvirus are transmitted by aphids in a non-persistent, non-circulative manner and have been extensively studied vis-à-vis their structure, taxonomy, evolution, diagnosis, transmission and molecular interactions with hosts. This comprehensive review exclusively discusses potyviruses and their transmission by aphid vectors, specifically in the light of several virus, aphid and plant factors, and how their interplay influences potyviral binding in aphids, aphid behavior and fitness, host plant biochemistry, virus epidemics, and transmission bottlenecks. We present the heatmap of the global distribution of potyvirus species, variation in the potyviral coat protein gene, and top aphid vectors of potyviruses. Lastly, we examine how the fundamental understanding of these multi-partite interactions through multi-omics approaches is already contributing to, and can have future implications for, devising effective and sustainable management strategies against aphid- transmitted potyviruses to global agriculture.
[Show full text]
Virus Diseases in Agriculture
Journal of the Department of Agriculture, Western Australia, Series 4 Volume 16 Number 1 March, 1975 Article 2 1-1-1975 Virus diseases in agriculture George McLean Follow this and additional works at: https://researchlibrary.agric.wa.gov.au/journal_agriculture4 Part of the Agronomy and Crop Sciences Commons, Entomology Commons, Horticulture Commons, and the Viticulture and Oenology Commons Recommended Citation McLean, George (1975) "Virus diseases in agriculture," Journal of the Department of Agriculture, Western Australia, Series 4: Vol. 16 : No. 1 , Article 2. Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture4/vol16/iss1/2 This article is brought to you for free and open access by Research Library. It has been accepted for inclusion in Journal of the Department of Agriculture, Western Australia, Series 4 by an authorized administrator of Research Library. For more information, please contact [email protected]. Electron micrographs of virus particles. Photographs by courtesy of Dr. C. Bracker, Department of Botany and Plant Pathology, Purdue University, Indiana, U.S.A. Straight rod-shaped virus Virus diseases in agriculture By George D. McLean, some viruses have been shown to and viruses that are spread by mealy Plant Pathologist contain an enzyme. Viruses do not bugs are not spread by leafhoppers. reproduce by division, but the viral Some species of aphids transmit Viruses are extremely small par nucleic acid "orders" the plant cell many viruses while other species ticles which can only be seen with to produce virus particles. transmit only a few. Aphids spread an electron microscope. A virus is How plant viruses are spread is cucumber mosaic virus, watermelon present in a diseased plant as huge important since a virus disease can mosaic virus and potato leaf roll numbers of tiny particles within not be "cured" and we must control virus and many other viruses.
[Show full text]
Virus Diseases of Lettuce in Arizona
Virus Diseases of Lettuce in Arizona Item Type Article Authors Nelson, M. R.; Davison, A. D. Publisher College of Agriculture, University of Arizona (Tucson, AZ) Journal Progressive Agriculture in Arizona Rights Copyright © Arizona Board of Regents. The University of Arizona. Download date 30/09/2021 22:15:02 Link to Item http://hdl.handle.net/10150/299784 VIRUS DISEASES OF LETTUCE IN ARIZONA By M. R. Nelson and A. D. Davison Lettuce Leaf With Big Vein Healthy Lettuce Leaf As is true of most crops grown in Arizona, lettuce has its share of virus diseases.Probably the best known of these is the seed transmitted lettuce mosaic.How- ever, the long recognized big vein disease is also ever present.Recently, several other virus diseases have been discovered in commercial lettuce fields in Arizona, namely cucumber mosaic and alfalfa mosaic.However, the presence of spotted wilt or "San Pablo blight," long thought to be a disease of Arizona lettuce, has not been confirmed. Lettuce Diseases Present Big Vein Virus: Big vein virus. This virus disease has long been present in Arizona What Pathologists Call "Calico" lettuce fields.The virus causes, as the name suggests, enlarged veins in the leaves of lettuce.In addition, the Thus it is believed that the virus somehow exists between leaf margins become frilled and distorted, giving fields crops, along with the fungus spores, in soil. ( or areas in a field ) a very differentappearance than Lettuce Calico healthy lettuce fields. Virus :Alfalfa mosaic virus( AMV ). This is a unique virus when compared with others This aphid- transmitted viruscauses mosaic -like cali- in Arizona lettuce because itis soil -borne.The virus cannot be transmitted from plant to plant by any means co patterns in many different crop and ornamental plants.
[Show full text]
Outdoor Lettuce Virus Disease Project 2016-2018 Year 1 Report
PFR SPTS No. 14591 Outdoor lettuce virus disease project 2016-2018 Year 1 report Fletcher J, Walker M, Davidson M, Paull S, Palmer A April 2017 Confidential report for: Vegetables New Zealand Incorporated 9858 DISCLAIMER Unless agreed otherwise, The New Zealand Institute for Plant & Food Research Limited does not give any prediction, warranty or assurance in relation to the accuracy of or fitness for any particular use or application of, any information or scientific or other result contained in this report. Neither Plant & Food Research nor any of its employees shall be liable for any cost (including legal costs), claim, liability, loss, damage, injury or the like, which may be suffered or incurred as a direct or indirect result of the reliance by any person on any information contained in this report. LIMITED PROTECTION This report may be reproduced in full, but not in part, without prior consent of the author or of the Chief Executive Officer, The New Zealand Institute for Plant & Food Research Ltd, Private Bag 92169, Victoria Street West, Auckland 1142, New Zealand. CONFIDENTIALITY This report contains valuable information in relation to the VNZ Outdoor lettuce virus disease project Yr 1 programme that is confidential to the business of Plant & Food Research and Vegetables New Zealand Incorporated. This report is provided solely for the purpose of advising on the progress of the VNZ Outdoor lettuce virus disease project Yr 1 programme, and the information it contains should be treated as “Confidential Information” in accordance with the Plant & Food Research Agreement with Vegetables New Zealand Incorporated. PUBLICATION DATA Fletcher J, Walker M, Davidson M, Paull S, Palmer A.
[Show full text]
A Member of a New Genus in the Potyviridae Infects Rubus James Susaimuthu A,1, Ioannis E
Available online at www.sciencedirect.com Virus Research 131 (2008) 145–151 A member of a new genus in the Potyviridae infects Rubus James Susaimuthu a,1, Ioannis E. Tzanetakis b,∗,1, Rose C. Gergerich a, Robert R. Martin b,c a Department of Plant Pathology, University of Arkansas, Fayetteville 72701, United States b Department of Botany and Plant Pathology, Oregon State University, Corvallis 97331, United States c Horticultural Crops Research Laboratory, USDA-ARS, Corvallis 97330, United States Received 6 March 2007; received in revised form 30 August 2007; accepted 1 September 2007 Available online 22 October 2007 Abstract Blackberry yellow vein disease causes devastating losses on blackberry in the south and southeastern United States. Blackberry yellow vein associated virus (BYVaV) was identified as the putative causal agent of the disease but the identification of latent infections of BYVaV led to the investigation of additional agents being involved in symptomatology. A potyvirus, designated as Blackberry virus Y (BVY), has been identified in plants with blackberry yellow vein disease symptoms also infected with BYVaV. BVY is the largest potyvirus sequenced to date and the first to encode an AlkB domain. The virus shows minimal sequence similarity with known members of the family and should be con- sidered member of a novel genus in the Potyviridae. The relationship of BVY with Bramble yellow mosaic virus, the only other potyvirus known to infect Rubus was investigated. The presence of the BVY was verified in several blackberry plants, but it is not the causal agent of blackberry yellow vein disease since several symptomatic plants were not infected with the virus and BVY was also detected in asymptomatic plants.
[Show full text]
Virus Diseases of Lettuce in Brazil
® Plant Viruses ©2008 Global Science Books Virus Diseases of Lettuce in Brazil Marcelo Agenor Pavan1 • Renate Krause-Sakate1 • Norberto da Silva1 • Francisco Murilo Zerbini2 • Olivier Le Gall3* 1 Departamento de Produção Vegetal, FCA-UNESP, Rua José Barbosa de Barros, 1780, CEP: 18610-307, Botucatu, SP, Brazil 2 Departamento de Fitopatologia/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Brazil 3 Virologie Végétale, UMR GDPP INRA-Bordeaux 2, IBVM, INRA, BP81, F-33883 Villenave d’Ornon Cedex, France Corresponding author : * [email protected] ABSTRACT Several viruses have been reported to infect lettuce. The most important is Lettuce mosaic virus (LMV), a potyvirus found worldwide transmitted by seeds and aphids, in a non-persistent manner. LMV causes quite variable symptoms, including mosaic, dwarfing, failure to form proper heads, and sometimes necrotic reactions. Cultivars carrying the mo11 and mo12 genes have resistance to the common strains, although most (mo breaking seed transmitted) strains can overcome this resistance. At least three species of tospovirus, including Tomato spotted wilt virus (TSWV), Tomato chlorotic spot virus (TCSV) and Groundnut ringspot virus (GRSV) causes significant losses, especially during summer, in which high populations of thrips vectors can be found in the field. Tospoviruses causes systemic necrosis and plant death. During the cooler season (May to September), two viruses have been found associated with big-vein disease, Mirafiori lettuce big-vein virus (MLBVV) which belongs to the genus Ophiovirus and Lettuce big-vein associated virus (LBVaV; genus Varicosavirus). LBVaV and MLBVV are both transmitted by the soil-borne fungus Olpidium brassicae. Lettuce mottle virus (LeMoV, genus Sequivirus); Cucumber mosaic virus (CMV, genus Cucumovirus), and Bidens mosaic virus (BiMV, genus Potyvirus) are also found to cause mosaic symptoms on lettuce, although their incidence in lettuce fields is low throughout the year.
[Show full text]
Identification of Some Viruses Causing Mosaic on Lettuce and Characterization of Lettuce Mosaic Virus from Tehran Province in Iran
African Journal of Agricultural Research Vol. 6(13), pp. 3029-3035, 4 July, 2011 Available online at http://www.academicjournals.org/AJAR DOI: 10.5897/AJAR11.114 ISSN 1991-637X ©2011 Academic Journals Full Length Research Paper Identification of some viruses causing mosaic on lettuce and characterization of Lettuce mosaic virus from Tehran Province in Iran Parisa Soleimani 1*, Gholamhossein Mosahebi 2 and Mina Koohi Habibi 2 1Department of Plant Protection, College of Agriculture, Dezful Branch, Islamic Azad university, Khuzestan, Iran. 2Department of Plant Pathology and Entomology, College of Agriculture, University of Tehran, Karaj, Iran. Accepted 19 May, 2011 Lettuce mosaic virus (LMV) , Cucumber mosaic virus (CMV) and Tomato spotted wilt virus (TSWV) were identified in lettuce fields in Tehran province. In this study, 452 infected lettuce plants having viral infection symptoms including, mosaic, mottling, leaf distortion, stunting defective heading, were collected from the fields throughout Tehran province. Distribution of Lettuce mosaic virus (LMV), Cucumber mosaic virus (CMV), Tomato spotted wilt virus (TSWV) and Arabis mosaic virus (ArMV) were determined with DAS-ELISA. LMV, CMV and TSWV were found on lettuce in this region, but no infection by ArMV was found. Percentage of single infection by LMV, CMV or TSWV was 21, 16 and 10% respectively. Also, 16% of samples were co-infected with LMV+CMV, 8% with LMV+TSWV and 8% with CMV+TSWV. 5% of samples were infected to all of these viruses. LMV was found in 49%, CMV in 44% and TSWV in 31% of samples totally. Therefore, LMV is major agent of lettuce mosaic disease in Tehran province.
[Show full text]
Guide to Identification of Aphids and Their Natural Enemies
Guide to identifi cation of aphids and their natural enemies Cristina Navarro Campos Ferrán García-Marí www.belchim.co.uk Guide-Puceron_FINAL_v2_ENG.indd 1 9/02/2015 11:02:29 introduction Belchim Crop Protection has been serving agriculture Damage can be direct – from physical feeding damage for almost 30 years. We have developed this guide with and loss of sugar or via transmission of phytopathogenic a view to increasing the knowledge of economically viruses. important crop pests and their natural enemies. For these reasons, aphids have the potential to cause a More than 4000 species of aphid have been identifi ed great deal of harm to crops if not controlled by natural in 10 distinct families. Although there is great variety predators and chemical insecticides. in colour, shape, size and food-source, there are several features in common; This guide has been produced with the assistance of Cristina Navarro Campos and Ferran Garcia-Mari, All aphids feed on plant sap using sucking mouthparts. both researchers at the Agroforestery Institute of the Mediterranean. We would like to express our deepest High reproductive capacity can result in very rapid gratitude for them making the development of this tool population increases. This gives them the potential to possible. be extremely destructive. These aphids will often form large colonies. Some aphids (eg Rosy apple aphid – Dysaphis plantaginea) feed on only a few specifi c species. This is known as host specifi city. Other aphids (eg Black bean aphid – Aphis fabae) are polyphagous and can
[Show full text]
Complete Nucleotide Sequence and Genetic Organization of Sunflower Mild Mosaic Virus (Summov)
Complete nucleotide sequence and genetic organization of Sunflower mild mosaic virus (SuMMoV) Fabián Giolitti1, Soledad de Breuil1, Nicolas Bejerman1 and Sergio Lenardon1,2 [email protected]; [email protected] 1- Instituto de Patología Vegetal (IPAVE), Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), Camino 60 cuadras Km. 5,5, X5020ICA, Córdoba, Argentina. 2- Facultad de Agronomía y Veterinaria Universidad, Nacional de Río Cuarto. ABSTRACT Two potyviruses that infect sunflower (Helianthus annuus L.) crops have been reported in Argentina. Sunflower chlorotic mottle virus (SuCMoV) is the most widely distributed one, with two strains: common and ring spot, which have been completely characterized. Sunflower mild mosaic virus (SuMMoV) that produces a chlorotic mild mosaic on sunflower commercial crops was detected in the rural area of Paraná (Entre Ríos Province). This virus has been biologically and serologically characterized but not fully characterized at the molecular level. The aim of this work was to determine the complete sequence of SuMMoV and study its genomic organization. A total RNA extraction was made from a preparation enriched with this virus. The quality of preparation was confirmed through electron microscopy and RT-PCR with specific primers for capsid protein gene. Total RNA obtained was pyrosequenced and the sequences obtained were analyzed. Electron microscopy from rapid preparations of samples enriched with the virus showed high concentration of potyvirus-like particles. RT-PCR showed an aplicon of expected size. The pyrosequencing resulted in a large contig of 9686 nucleotides (nt) with a single open reading frame (ORF) of 3077 amino acids (aa).
[Show full text]
Pea Seed-Borne Mosaic Virus : a Review Ravinder Kumar Khetarpal, Yves Maury
Pea seed-borne mosaic virus : a review Ravinder Kumar Khetarpal, Yves Maury To cite this version: Ravinder Kumar Khetarpal, Yves Maury. Pea seed-borne mosaic virus : a review. Agronomie, EDP Sciences, 1987, 7 (4), pp.215-224. hal-00884986 HAL Id: hal-00884986 https://hal.archives-ouvertes.fr/hal-00884986 Submitted on 1 Jan 1987 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Pea seed-borne mosaic virus : a review Ravinder Kumar KHETARPAL Yves MAURY LN.R.A., Pathologie végétale, Centre de Recherches de Versailles, 78000 Versailles SUMMARY Pea seed-borne mosaic virus (PSbMV), an economically significant seed-transmitted virus of pea has been commonly found in pea germplasm collections of many countries. The virus is suspected to have spread world-wide due to the exchange of infected germplasm material. Owing to the secondary spread of the virus in the field by aphid vectors, a low level of seed infection leads to a high proportion of the disease. The symptoms produced on sensitive pea cultivars are often not very characteristic. Resistance to this virus, known to be governed by a recessive gene ’sbm’, is in the process of being incorporated into improved pea varieties.
[Show full text]