{"id":827,"date":"2015-04-09T07:00:06","date_gmt":"2015-04-09T14:00:06","guid":{"rendered":"http:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=827"},"modified":"2024-04-26T11:24:08","modified_gmt":"2024-04-26T18:24:08","slug":"pea-seed-borne-mosaic-virus-psbmv","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=827","title":{"rendered":"Pea Seed-borne Mosaic Virus (PSbMV)"},"content":{"rendered":"<h5 style=\"text-align: center;\"><strong>California Pest Rating for<\/strong><\/h5>\n<h5 style=\"text-align: center;\"><strong><em>Pea Seed-borne Mosaic Virus<\/em><\/strong><strong> (PSbMV)<\/strong><\/h5>\n<h5 style=\"text-align: center;\"><strong>Pest\u00a0Rating: B<\/strong><\/h5>\n<hr \/>\n<h5 style=\"text-align: center;\"><strong>PEST RATING PROFILE<\/strong><\/h5>\n<h5><strong>Initiating Event:\u00a0 <\/strong><\/h5>\n<p>There is no initiating event.\u00a0 The risk of infestation of <em>Pea seed-borne mosaic virus<\/em> in California is evaluated and a permanent rating is proposed.<\/p>\n<h5><strong>History &amp; Status:<\/strong><\/h5>\n<p><span style=\"text-decoration: underline;\"><strong>Background<\/strong><\/span>: In 1966 a virus disease of pea was first reported in Europe.\u00a0 The same virus was also described in Japan as <em>Pea seed-borne mosaic virus<\/em>. During the early 1980s the virus was also discovered in New Zealand and England and is now known to be widespread throughout the globe due to the movement of infected pea seeds through high international trade.\u00a0 In California, the pathogen was first discovered in 2004 on pea cultivated in a field in Monterey County.<\/p>\n<p><em>Pea seed-borne mosaic virus<\/em> belongs to the genus Potyvirus in the family Potyviridae and RNA viruses group.\u00a0 The nucleic acid consists of a positive-sense single stranded RNA.\u00a0 The virus consists of several strains or pathovars that are serologically closely related.\u00a0 Three strains of PSbMV (P1, P2 and P4) have been identified and the most common strains include P-1 and P-4 from pea and the L-1 from lentil. Usually, differential hosts have been used to identify specific strains (Larsen, 2001).<\/p>\n<p style=\"padding-left: 30px;\"><em><strong>Hosts<\/strong>:<\/em> The host range for PSbMV includes at least 47 plant species belonging to 12 families.\u00a0 However, only three hosts are considered to be economically important, namely, <em>Pisum sativum<\/em> (pea), <em>Lens culinaris<\/em> subsp. <em>culinaris<\/em> (lentil), and <em>Vicia<\/em> <em>faba<\/em> (bean).\u00a0 Chickpea is also a susceptible host however, there is no evidence that it transmitted through contaminated seed.\u00a0 Other hosts include a wide range of experimental hosts.<\/p>\n<p style=\"padding-left: 30px;\"><em><strong>Symptoms<\/strong>:<\/em>\u00a0 Symptoms on peas are affected by age of plant at the time of infection, temperature, virus strain or pathotype and plant genotype.\u00a0 Symptoms may develop in as few as 3 days after infection.\u00a0 Certain pea cultivars never express symptoms (Khetarpal &amp; Maury, 1987). Symptoms may be more severe on plants germinating from infected seed.\u00a0 Symptoms include general stunting, leaf mild chlorosis, shortening and downward rolling of leaflets, vein clearing and swelling, rosetting (due to reduction of internodal growth), mosaic, distorted flower or seed pods and failure to set pods. However, symptoms disappear soon after infection.\u00a0 Seed coats of PSbMV-infected seed may become cracked, split or banded and often serve as indicators of possible PSbMV infection although these symptoms may also be caused by physiological or environmental factors.\u00a0 Contrarily, healthy appearing seeds with normal seed coats may also bear the virus pathogen (CABI, 2014; Larson, 2001).<\/p>\n<p style=\"padding-left: 30px;\"><em><strong>Damage Potential<\/strong>:<\/em>\u00a0 The loss of market due to infected seed is a significant factor in the estimated economic loss caused by the virus.\u00a0 As much as 36% reduction in pea seed yields are estimated to be due to PSbMV infection (Khetarpal &amp; Maury, 1987).\u00a0 Seed infections greater than 30% have been reported (CABI, 2014).<\/p>\n<p style=\"padding-left: 30px;\"><strong><em>Transmission<\/em><\/strong>:\u00a0 The most common means of long-distance transmission of PSbMV is through infected seed.\u00a0 The virus infects seed internally and all parts of inflorescences from infected plants contain the virus.\u00a0 Infected seed is an important means of introducing the virus into new, non-infected areas.\u00a0 Spread from plant to plant is brought about mainly by aphid vectors and mechanical transmission. The virus can be transmitted in a non-persistent manner by 21 aphid species.\u00a0 \u00a0The pea aphid (<em>Acyrthosiphon pisum<\/em>), green peach aphid (<em>Myzus persicae<\/em>), and cotton aphid (<em>Aphis gossypii<\/em>) are the most common vectors.\u00a0 Natural aphid vectors are the pea aphid, cowpea aphid (<em>Aphis craccivora<\/em>), black bean aphid (<em>Aphis fabae<\/em>), <em>Dactynotus escalanti<\/em>, mint aphid (<em>Ovatus crataegarius<\/em>), and bird cherry-oat aphid (<em>Rhopalosiphum padi<\/em>). If aphid populations are high and uncontrolled during a growing season, then only a few PSbMV-infected seeds can result in spreading the disease over a large percentage of a field.\u00a0 Typically, the aphid vector can acquire the virus in 5 min and transmit it after a single probe of one minute or less (Larsen, 2001).\u00a0 Hampton and Mink (1975) reported that aphids acquire PSbMV and inoculate it in 10-90 sec feeding periods without requiring a latent period.\u00a0 High aphid populations are favored by cool growing seasons thereby enabling effective spread of PSbMV.<\/p>\n<p><strong><span style=\"text-decoration: underline;\">Worldwide Distribution<\/span><\/strong>: \u00a0\u00a0PSbMV is distributed worldwide largely due to the distribution of pea germplasm infected with the seed-transmitted virus (Larsen, 2001; Hampton <em>et al.,<\/em> 1993).\u00a0 It is distributed in <em>Asia<\/em>: India, Iran, Israel, Japan, Jordan, Lebanon, Nepal, Pakistan, Syria, Taiwan, Turkey, Yemen; <em>Africa<\/em>: Algeria, Egypt, Ethiopia, Libya, Morocco, South Africa, Sudan, Tanzania, Tunisia, Zambia, Zimbabwe; <em>North America<\/em>: Canada, USA; <em>South America<\/em>: Brazil; <em>Europe<\/em>: Belgium, Bulgaria, Czech Republic, former Czechoslovakia, Denmark, Finland, France, Germany, Netherland, Poland, Romania, Russian Federation, Serbia, Slovakia, Sweden, Switzerland, United Kingdom, Yugoslavia; <em>Oceania<\/em>: Australia, New Zealand.<\/p>\n<p>In the USA is it has been found in California, Idaho, Maryland, Minnesota, New York, Oregon, Vermont, Washington, and Wisconsin (CABI, 2014; EPPO, 2014).<\/p>\n<p><span style=\"text-decoration: underline;\"><strong>Official Control<\/strong><\/span>:\u00a0 Since 1995, PSbMV has been listed by Argentina and Brazil as an A1 quarantine pathogen (EPPO, 2014). \u00a0The pathogen is on the \u2018Harmful Organism List\u2019 for nine countries: Australia, Costa Rica, Georgia, Japan, Nambia, Nauru, South Africa, Taiwan and Uruguay (PCIT, 2014).<\/p>\n<p><span style=\"text-decoration: underline;\"><strong>California Distribution<\/strong><\/span>: Monterey County, California.<\/p>\n<p><span style=\"text-decoration: underline;\"><strong>California Interceptions<\/strong><\/span>:\u00a0 There are no official records of PSbMV detected in incoming plant shipments to California.<\/p>\n<p>The risk <em>Pea seed-borne mosaic virus<\/em> would pose to California is evaluated below.<\/p>\n<h5><strong>Consequences of Introduction:\u00a0<\/strong><\/h5>\n<p><strong>1) Climate\/Host Interaction<\/strong>: Evaluate if the pest would have suitable hosts and climate to establish in California. Score:<\/p>\n<p style=\"padding-left: 30px;\"><strong>&#8211; Low (1)<\/strong> Not likely to establish in California; or likely to establish in very limited areas.<br \/>\n<span style=\"color: #008000;\"><strong>&#8211; Medium (2)<\/strong> may be able to establish in a larger but limited part of California.<\/span><br \/>\n<strong>&#8211; High (3)<\/strong> likely to establish a widespread distribution in California.<\/p>\n<p style=\"padding-left: 30px;\"><strong><em>Risk is <span style=\"color: #008000;\">Medium (2)<\/span><\/em><\/strong><em> \u2013 The establishment of <\/em>PSbMV<em> within CA is closely related to the establishment of its major hosts and associated aphid vector. Cultivation of pea and bean plants requires cool and humid climate \u2013 such as is found mainly along the California\u2019s coastal regions.\u00a0 Already PSbMV is established in Monterey County, California.<\/em><\/p>\n<p><strong>2) \u00a0Known Pest Host Range<\/strong>: Evaluate the host range of the pest. Score:<\/p>\n<p style=\"padding-left: 30px;\"><strong>&#8211; Low (1)<\/strong> has a very limited host range.<br \/>\n<span style=\"color: #008000;\"><strong>&#8211; Medium (2)<\/strong> has a moderate host range.<\/span><br \/>\n<strong>&#8211; High (3)<\/strong> has a wide host range.<\/p>\n<p style=\"padding-left: 30px;\"><strong><em>Risk is <span style=\"color: #008000;\">Medium (2) <\/span><\/em><\/strong>\u2013 PSbMV <em>has a moderate host range of 47 plant species belonging to 12 families.\u00a0 However, the main hosts of economic importance are pea, bean and lentil.\u00a0 The former two crops are in limited commercial production in California.<\/em><\/p>\n<p><strong>3) Pest Dispersal Potential<\/strong>: Evaluate the natural and artificial dispersal potential of the pest. Score:<\/p>\n<p style=\"padding-left: 30px;\"><strong>&#8211; Low (1)<\/strong> does not have high reproductive or dispersal potential.<br \/>\n<strong>&#8211; Medium (2)<\/strong> has either high reproductive or dispersal potential.<br \/>\n<span style=\"color: #008000;\"><strong>&#8211; High (3)<\/strong> has both high reproduction and dispersal potential.<\/span><\/p>\n<p style=\"padding-left: 30px;\"><strong><em>Risk is <span style=\"color: #008000;\">High (3)<\/span> <\/em><\/strong><em>\u2013 The spread of <\/em>PSbMV<em> is through infected seed and several (21) Aphid species.\u00a0 The combination of both agents, plus the high rate of multiplication of the virus within an infected host render the pathogen a high risk potential for spread to non-infected sites.<\/em><\/p>\n<p><strong>4) Economic Impact<\/strong>: Evaluate the economic impact of the pest to California using the criteria below. Score:<\/p>\n<p style=\"padding-left: 30px;\">A. The pest could lower crop yield.<br \/>\nB.The pest could lower crop value (includes increasing crop production costs).<br \/>\nC. The pest could trigger the loss of markets (includes quarantines).<br \/>\nD. The pest could negatively change normal cultural practices.<br \/>\nE. The pest can vector, or is vectored, by another pestiferous organism.<br \/>\nF. The organism is injurious or poisonous to agriculturally important animals.<br \/>\nG. The organism can interfere with the delivery or supply of water for agricultural uses.<\/p>\n<p style=\"padding-left: 30px;\"><strong>&#8211; Low (1)<\/strong> causes 0 or 1 of these impacts.<br \/>\n<strong>&#8211; Medium (2)<\/strong> causes 2 of these impacts.<br \/>\n<span style=\"color: #008000;\"><strong>&#8211; High (3)<\/strong> causes 3 or more of these impacts.<\/span><\/p>\n<p style=\"padding-left: 30px;\"><strong><em>Risk is <span style=\"color: #008000;\">High (3)<\/span><\/em><\/strong><em> \u2013Incidence and spread of PSbMV could adversely affect pea and bean production in California by lowering crop yield, value, increasing production costs, affecting local and international\u00a0 markets, negatively change normal cultivation practices to prevent incidence of further occurrence and spread of the virus and its whitefly vector.<\/em><\/p>\n<p><strong>5) Environmental Impact<\/strong>: Evaluate the environmental impact of the pest on California using the criteria below.<\/p>\n<p style=\"padding-left: 30px;\">A. \u00a0The pest could have a significant environmental impact such as lowering biodiversity, disrupting natural communities, or changing ecosystem processes.<br \/>\nB. \u00a0The pest could directly affect threatened or endangered species.<br \/>\nC. \u00a0The pest could impact threatened or endangered species by disrupting critical habitats.<br \/>\nD. \u00a0The pest could trigger additional official or private treatment programs.<br \/>\nE. \u00a0The pest significantly impacts cultural practices, home\/urban gardening or ornamental plantings.<\/p>\n<p>Score the pest for Environmental Impact. Score:<\/p>\n<p style=\"padding-left: 30px;\"><strong>&#8211; Low (1)<\/strong> causes none of the above to occur.<br \/>\n<span style=\"color: #008000;\"><strong>&#8211; Medium (2)<\/strong> causes one of the above to occur.<\/span><br \/>\n<strong>&#8211; High (3)<\/strong> causes two or more of the above to occur.<\/p>\n<p style=\"padding-left: 30px;\"><strong><em>Risk is <span style=\"color: #008000;\">Medium (2) <\/span><\/em><\/strong><em>\u2013 Several weeds may be hosts of PSbMV and serve as sources of inoculum acquired by aphids against economically important hosts. However, several weed hosts may be asymptomatic and it is not known how well the whitefly vector will acquire the virus from such infected hosts that may comprise natural environments.\u00a0 The effect on these hosts in nature is not known.\u00a0 Nevertheless, PSbMV infections may impact home\/urban gardening and cultivation of ornamentals.<\/em><\/p>\n<h5><strong>Consequences of Introduction to California for <em>Peas seed-borne mosaic virus<\/em><\/strong><\/h5>\n<p>Add up the total score and include it here. (Score)<\/p>\n<p style=\"padding-left: 30px;\"><strong>-Low<\/strong> = 5-8 points<br \/>\n<span style=\"color: #008000;\"><strong>-Medium<\/strong> = 9-12 points<\/span><br \/>\n<strong>-High<\/strong> = 13-15 points<\/p>\n<p>Total points obtained on evaluation of consequences of introduction of PSbMV to California = <strong><span style=\"color: #008000;\">(12)<\/span>.<\/strong><\/p>\n<p><strong>6) Post Entry Distribution and Survey Information<\/strong>: Evaluate the known distribution in California. Only official records identified by a taxonomic expert and supported by voucher specimens deposited in natural history collections should be considered. Pest incursions that have been eradicated, are under eradication, or have been delimited with no further detections should not be included. (Score)<\/p>\n<p style=\"padding-left: 30px;\"><strong>-Not established (0)<\/strong> Pest never detected in California, or known only from incursions.<br \/>\n<span style=\"color: #008000;\"><strong>-Low (-1)<\/strong> Pest has a localized distribution in California, or is established in one suitable climate\/host area (region).<\/span><br \/>\n<strong>-Medium (-2)<\/strong> Pest is widespread in California but not fully established in the endangered area, or pest established in two contiguous suitable climate\/host areas.<br \/>\n<strong>-High (-3)<\/strong> Pest has fully established in the endangered area, or pest is reported in more than two contiguous or non-contiguous suitable climate\/host areas.<\/p>\n<p style=\"padding-left: 30px;\"><strong><em>Evaluation is <span style=\"color: #008000;\">(-1)<\/span>.\u00a0<\/em><\/strong><\/p>\n<h5>Final Score:<\/h5>\n<p>7) The final score is the consequences of introduction score minus the post entry distribution and survey information score: (Score)<\/p>\n<p><strong><em>Final Score: <\/em><\/strong><em>\u00a0Score of Consequences of Introduction \u2013 Score of Post Entry Distribution and Survey Information <span style=\"color: #008000;\"><strong>= 11<\/strong><\/span><\/em><\/p>\n<h5><strong>Uncertainty: <\/strong><\/h5>\n<p>Current field data is always needed on the probable establishment and spread of PSbMV beyond the known infested regions of Monterey County.\u00a0 Such information would be obtained through periodic surveys.\u00a0 Also not known is the distribution of the virus in natural environments and the potential that infected natural hosts may play in its possible spread to legume fields.<\/p>\n<h5><strong>Conclusion and Rating Justification: <\/strong><\/h5>\n<p>Based on the evidence provided above <strong>the proposed rating for <em>Pea seed-borne mosaic virus<\/em> is B.<\/strong><\/p>\n<h5><strong>References:<\/strong><\/h5>\n<p><strong>C<\/strong>ABI\u00a0\u00a0 2014.\u00a0 <em>Pea seed-borne mosaic virus<\/em> full datasheet.\u00a0 Crop Protection Compendium.\u00a0 <a href=\"http:\/\/www.cabi.org\/cpc\/datasheet\/1695\" target=\"_blank\" rel=\"noopener\">http:\/\/www.cabi.org\/cpc\/datasheet\/1695<\/a><\/p>\n<p><strong>E<\/strong>PPO, 2014.\u00a0 <em>Pea seed-borne mosaic virus<\/em> (PSBMV0).\u00a0 New PQR database.\u00a0 Paris, France:\u00a0 European and Mediterranean Plant Protection Organization.\u00a0 <a href=\"http:\/\/newpqr.eppo.int\" target=\"_blank\" rel=\"noopener\">http:\/\/newpqr.eppo.int<\/a><\/p>\n<p><strong>H<\/strong>ampton, R. O and G. I. Mink. 1975. <em>Pea seed-borne mosaic virus<\/em>. CMI\/AAB Descriptions of Plant Viruses. No. 146, 4pp. Wellesbourne, UK: Association of Applied Biologists. <a href=\"http:\/\/www.dpvweb.net\/dpv\/showdpv.php?dpvno=146\" target=\"_blank\" rel=\"noopener\">http:\/\/www.dpvweb.net\/dpv\/showdpv.php?dpvno=146<\/a>.<\/p>\n<p><a href=\"http:\/\/www.cabi.org\/cpc\/abstract\/19932331602\" target=\"_blank\" rel=\"noopener\"><strong>H<\/strong>ampton, R. O, J. M. Kraft, F. J. Muehlbauer. 1993. Minimizing the threat of seedborne pathogens in crop germ plasm: elimination of pea seedborne mosaic virus from the USDA-ARS germ plasm collection of <em>Pisum sativum<\/em>. Plant Disease, 77(3):220-224<\/a><\/p>\n<p><a href=\"http:\/\/www.cabi.org\/cpc\/abstract\/19871664306\" target=\"_blank\" rel=\"noopener\"><strong>K<\/strong>hetarpal R. K. and Y. Maury. 1987. <em>Pea seed-borne mosaic virus<\/em>: a review. Agronomie, 7(4):215-224<\/a><\/p>\n<p><strong>L<\/strong>arsen, R. C.\u00a0 2001.\u00a0 Pea Seedborne mosaic virus.\u00a0 <em>In<\/em>: Compendium of Pea Diseases and Pests Second Edition.\u00a0 St.Paul, USA: APS Press, 37-38.<\/p>\n<p><strong>P<\/strong>CIT.\u00a0 2014.\u00a0 USDA Phytosanitary Certificate Issuance &amp; Tracking System.\u00a0 <a href=\"https:\/\/pcit.aphis.usda.gov\/PExD\/faces\/ReportHarmOrgs.jsp\" target=\"_blank\" rel=\"noopener\">https:\/\/pcit.aphis.usda.gov\/PExD\/faces\/ReportHarmOrgs.jsp<\/a>.<\/p>\n<h5>Responsible Party:<\/h5>\n<p>Dr. John J. Chitambar, Primary Plant Pathologist\/Nematologist, California Department of Food and Agriculture, 3294 Meadowview Road, Sacramento, CA 95832. Phone: 916-262-1110, plant.health[@]cdfa.ca.gov.<\/p>\n<hr \/>\n<h3 style=\"text-align: left;\"><strong>Pest\u00a0Rating: B<\/strong><\/h3>\n<hr \/>\n<p><em>Posted by ls<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>California Pest Rating for Pea Seed-borne Mosaic Virus (PSbMV) Pest\u00a0Rating: B PEST RATING PROFILE Initiating Event:\u00a0 There is no initiating event.\u00a0 The risk of infestation of Pea seed-borne mosaic virus in California is evaluated and a permanent rating is proposed. History &amp; Status: Background: In 1966 a virus disease of pea was first reported in &hellip; <a href=\"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=827\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Pea Seed-borne Mosaic Virus (PSbMV)<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1117,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[4,39],"tags":[155,41,154],"class_list":["post-827","post","type-post","status-publish","format-standard","hentry","category-plant-pathology","category-viruses-and-viroids","tag-pea-seed-borne-mosaic-virus","tag-plant-pathogens","tag-virus"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5l8vQ-dl","jetpack-related-posts":[{"id":7885,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=7885","url_meta":{"origin":827,"position":0},"title":"Soil-borne wheat mosaic virus","author":"Heather.Martin","date":"December 17, 2020","format":false,"excerpt":"California Pest Rating for Soil-borne wheat mosaic virusPest Rating: C download pest rating *NOTE You must be registered and logged in to post a comment. 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Posted by ta","rel":"","context":"In &quot;C-Rated&quot;","block_context":{"text":"C-Rated","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=671"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":732,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=732","url_meta":{"origin":827,"position":1},"title":"Pepino Mosaic Virus (PepMV)","author":"Admin","date":"April 7, 2015","format":false,"excerpt":"California Pest Rating for Pepino Mosaic Virus (PepMV) Pest\u00a0Rating: B PEST RATING PROFILE Initiating Event:\u00a0 In January 2015, Tongyan Tian, CDFA Plant Pathologist, detected Pepino mosaic virus(PepMV) in two official tomato samples collected from plants grown in a greenhouse in San Diego County.\u00a0 The virus has been previously reported by\u2026","rel":"","context":"In &quot;Plant Pathogens&quot;","block_context":{"text":"Plant Pathogens","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=4"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1183,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1183","url_meta":{"origin":827,"position":2},"title":"Tomato Mottle Mosaic Virus (ToMMV)","author":"Admin","date":"October 12, 2015","format":false,"excerpt":"California Pest Rating for Tomato Mottle Mosaic Virus (ToMMV) Pest Rating: B PEST RATING PROFILE Initiating Event:\u00a0 On September 17, 2015, the CDFA was notified by a seed company of the detection of Tomato mottle mosaic virus (ToMMV) in tomatoes grown at the company\u2019s farm in San Joaquin County.\u00a0 Subsequently,\u2026","rel":"","context":"In &quot;Plant Pathogens&quot;","block_context":{"text":"Plant Pathogens","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=4"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":4314,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=4314","url_meta":{"origin":827,"position":3},"title":"Cucumber Green Mottle Mosaic Virus","author":"Admin","date":"January 4, 2018","format":false,"excerpt":"\u00a0California Pest Rating for Cucumber Green Mottle Mosaic Virus Pest Rating: A PEST RATING PROFILE Initiating Event: \u00a0 On December 15, 2017, Cucumber green mottle mosaic virus (CGMMV) was detected in a watermelon seed sample submitted by the USDA to the CDFA Plant Pathology Lab, and collected from a seed\u2026","rel":"","context":"In &quot;Plant Pathogens&quot;","block_context":{"text":"Plant Pathogens","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=4"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2226,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=2226","url_meta":{"origin":827,"position":4},"title":"Freesia Mosaic Virus","author":"Admin","date":"June 29, 2016","format":false,"excerpt":"California Pest Rating for Freesia Mosaic Virus Pest Rating: B PEST RATING PROFILE Initiating Event: On March 21, 2016, two samples of diseased Lilium sp. (lily) plants exhibiting leaf spots, were collected from a nursery in San Luis Obispo County, during a regulatory nursery inspection by San Luis Obispo County\u2026","rel":"","context":"In &quot;Plant Pathogens&quot;","block_context":{"text":"Plant Pathogens","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=4"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":8970,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=8970","url_meta":{"origin":827,"position":5},"title":"Citrus yellow mosaic virus","author":"Heather.Martin","date":"September 27, 2021","format":false,"excerpt":"California Pest Rating for Citrus yellow mosaic virus (mosaic of citrus)Pest Rating: A DOWNLOAD PEST RATING *NOTE You must be registered and logged in to post a comment. If you have registered and have not received the registration confirmation, please contact us at permits[@]cdfa.ca.gov. 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