{"id":1931,"date":"2016-05-10T11:18:51","date_gmt":"2016-05-10T18:18:51","guid":{"rendered":"http:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1931"},"modified":"2024-04-26T11:13:48","modified_gmt":"2024-04-26T18:13:48","slug":"colletotrichum-fructicola-prihastuti-l-cai-k-d-hyde-2009","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1931","title":{"rendered":"Colletotrichum fructicola Prihastuti, L. Cai &#038; K. D. Hyde, 2009"},"content":{"rendered":"<h5 style=\"text-align: center;\">California Pest Rating for<\/h5>\n<h5 style=\"text-align: center;\"><em>Colletotrichum fructicola <\/em>Prihastuti, L. Cai &amp; K. D. Hyde, 2009<\/h5>\n<h5 style=\"text-align: center;\">Pest Rating: \u00a0B<\/h5>\n<hr \/>\n<h5 style=\"text-align: center;\">PEST RATING PROFILE<\/h5>\n<h5><strong>Initiating Event: <\/strong><\/h5>\n<p>On March 29, 2016, a shipment of Chinese evergreen (<em>Aglaonema<\/em> sp.)<strong>\u00a0 <\/strong>cuttings showing leaf spotting symptoms and destined to a nursery in San Luis Obispo County, was intercepted and sampled by San Luis Obispo County Agricultural officials.\u00a0 The shipment had originated in Costa Rica.\u00a0 Diseased plant samples were sent to the CDFA Plant Diagnostics Branch for diagnosis.\u00a0 Suzanne Latham, CDFA plant pathologist, identified the anthracnose and fruit rot pathogen, <em>Colletotrichum fructicola<\/em>, as the cause for the disease.\u00a0 This species was first detected within California on August 26, 2015, in mango fruit shipped from Puerto Rico and intercepted by the California Dog Team.\u00a0 The fruit shipment was destined to a private citizen in Sacramento County.\u00a0 The identity of the fungal pathogen was confirmed on August 18, 2015, by the USDA National Identification Services at Beltsville, Maryland.\u00a0 Several detections of <em>C. fructicola <\/em>followed the initial find: on August 14, 2015, in <em>Cymbidium<\/em> orchid leaves from a nursery in San Diego County; on August 19, 2015, on mango fruit from Florida and destined for Stanislaus County; on November 9, 2015, in <em>Dracaena massangeana<\/em> cuttings from Costa Rica and destined to a nursery in San Diego County; on March 15, 2016, in black sapote fruit from Florida and destined to a private citizen in Los Angeles County.\u00a0 In all these cases, subsequent to the detection of <em>C. fructicola<\/em>, all fruit and plant shipments\/nursery stock were either destroyed or rejected from entering California.\u00a0 Currently, <em>C. fructicola <\/em>has a temporary \u2018Q\u2019 rating.\u00a0 The risk of introduction and establishment of this pathogen in California is assessed and a permanent rating is proposed herein.<\/p>\n<h5><strong>History &amp; Status:<\/strong><\/h5>\n<p><strong><u>Background<\/u>:<\/strong>\u00a0 <em>Colletotrichum fructicola<\/em> was originally reported to be associated with coffee berries (<em>Coffea arabica<\/em>) in northern Thailand (Prihastuti <em>et al<\/em>., 2009) and as a leaf endophyte from Central America (as <em>C. ignotum<\/em>). Since then, <em>C. fructicola<\/em> has been found on several tropical and subtropical hosts from diverse geographical regions. In the USA, <em>C. fructicola<\/em> was reported in 2012 from Florida and North Carolina on strawberry crown and apple fruit respectively (Weir <em>et al<\/em>., 2012). During 2015-16, the pathogen was also detected in California associated with several quarantine nursery plant\/fruit shipments and regulatory nursery samples.<\/p>\n<p>The pathogen is a distinct fungus species belonging to the vastly morphological and physiological variable <em>C. gloeosporioides <\/em>complex and is generally identified from other species of the complex only by gene sequencing. \u00a0However, <em>C. ignotum<\/em> and <em>Glomerella cingulata<\/em> var. <em>minor<\/em> are synonyms of <em>C. fructicola<\/em> (Prihastuti <em>et al.,<\/em> 2009; Rojas <em>et al<\/em>., 2010; Weir <em>et al<\/em>, 2012).<\/p>\n<p><strong>Hosts:<\/strong> <em>Aglaonema<\/em> sp. (Chinese evergreen), <em>Annona reticulata<\/em> (custard apple), <em>A. squamosa<\/em> (sugar apples), <em>Artocarpus heterophyllus<\/em> (jackfruit), <em>Coffea arabica<\/em> (coffee), <em>Coffea<\/em> sp., <em>Camellia japonica<\/em> (Japanese camellia), <em>Camellia sinensis (tea)<\/em>, <em>Camellia<\/em> sp., <em>Capsicum frutescens<\/em> (chili pepper), <em>Carica papaya<\/em> (papaya), <em>Cestrum parqui<\/em> (green cestrum), <em>Citrullus vulgaris<\/em> (watermelon), <em>Citrus limon<\/em> (lemon), <em>C. reticulata<\/em> (Mandarin orange), <em>C. sinensis<\/em> (sweet orange), <em>Citrus x paradisi<\/em>, <em>Crinum asiaticum<\/em> (spider lily), <em>Cucumis sativus<\/em> (cucumber),<em> Cymbidium sp. <\/em>(orchid), <em>Dendrobium<\/em> sp. (orchid), <em>Dioscorea alata<\/em> (purple yam), <em>D. rotundata<\/em> (white yam), <em>Diospyros nigra<\/em> (black sapote), <em>Dracaena massangeana<\/em> (corn plant\/cornstalk Dracaena), <em>Epidendrum<\/em> sp. (orchid), <em>Ficus carica<\/em> (common fig), <em>F. edulis<\/em> (fig), <em>F. pumila<\/em> (creeping fig), <em>Fortunella margarita<\/em> (oval kumquat) <em>Fragaria ananassa <\/em>(strawberry), <em>Limonium sinuatum<\/em> (statice), <em>Limonium<\/em> sp., <em>Lobularia maritima<\/em> (sweet alyssum), <em>Lupinus angustifolius<\/em> (blue lupine), <em>Lycopersicon esculentum<\/em> (tomato), <em>Lycium chinensis<\/em> (boxthorn), <em>Malus domestica<\/em> (apple), <em>M. sylvestris<\/em> (crab apple), <em>Mangifera indica<\/em> (mango), <em>Matthiola incana<\/em> (stock), <em>Medicago polymorpha<\/em> (burclover), <em>Musa acuminata<\/em> (edible banana), <em>Nerium oleander<\/em> (oleander), <em>Nicotiana tabacum<\/em> (tobacco), <em>Passiflora edulis<\/em> (passion fruit), <em>Persea americana<\/em> (avocado), <em>Phalaenopsis <\/em>sp. (moth orchid), <em>Phormium tenax<\/em> (flax), <em>Portulaca oleracea<\/em> (little hogweed\/common purslane), <em>Psidium guajava<\/em> (guava), <em>Pyrus bretschneideri<\/em> (Chinese white pear), <em>P. pyrifolia<\/em> (pear), <em>Saccolabium<\/em> sp. (orchid), <em>Tetragastris panamensis<\/em>, <em>Theobroma cacao<\/em> (cocoa), <em>Vanda<\/em> sp. (orchid) (Farr &amp; Rossman, 2016; Li <em>et al<\/em>., 2014; Prihastuti <em>et al<\/em>., 2009; Wang <em>et al.<\/em>, 2016, Weir <em>et al<\/em>., 2012; Zhang <em>et al.<\/em>, 2015).<\/p>\n<p><strong>Symptoms:\u00a0<\/strong> Generally, <em>Colletotrichum<\/em>-infected host plants exhibit symptoms of anthracnose which include dark brown leaf, stem and fruit spots, fruit rot, and wilting of leaves which often result in dieback and reduction in plant quality.\u00a0 In China, early stages of the disease in pear was characterized by the presence of black spots on young fruit which was always followed by severe bitter rot in matured fruit, and less than 1 mm black spots on leaves resulting in severe defoliation and loss of fruit (Jiang <em>et al<\/em>., 2014; Zhang <em>et al<\/em>., 2015). Anthracnose symptoms on tobacco leaves initiate as discrete, yellow-green spots which coalesce into larger lesions with white centers and dark brown margins (Wang <em>et al.,<\/em> 2016).<\/p>\n<p><strong>Damage Potential:<\/strong>\u00a0 Anthracnose disease caused by <em>Colletotrichum fructicola <\/em>can result in reduced plant quality and growth, fruit production and marketability.\u00a0 \u00a0In China, sudden outbreaks of the disease resulted in severe defoliation and a loss of pear fruit quality and yield resulting in fresh market losses ranging from 60-90% which, in 2008, were estimated at US$150 million. (Li, <em>et al.,<\/em> 2013; Zhang, <em>et al.,<\/em> 2015).\u00a0 In 2014, also in China, 90% of tobacco leaves on ~2% plants in a 3-ha commercial tobacco field were infected with <em>C. fructicola<\/em> (Wang, <em>et al<\/em>., 2016). \u00a0In California, nursery production of potted host plants or in greenhouses are particularly at risk as nursery conditions are often conducive to infection by <em>Colletotrichum<\/em> species.\u00a0 In California\u2019s cultivated fields, disease development may be sporadic as it is affected by levels of pathogen inoculum and environmental conditions.<\/p>\n<p><strong>Disease Cycle:\u00a0<\/strong> It is likely that <em>Colletotrichum fructicola<\/em> has a similar life cycle to that of other <em>Colletotrichum<\/em> species and survives between crops during winter as mycelium on plant residue in soil, on infected plants, and on seeds.\u00a0 During active growth, the pathogen produces masses of hyphae (stromata) which bear conidiophores, on the plant surface. Conidia (spores) are produced at the tips of the conidiophores and disseminated by wind, rain, cultivation tools, equipment, and field workers.\u00a0 \u00a0Conidia are transmitted to host plants.\u00a0 Humid, wet, rainy weather is necessary for infection to occur.\u00a0 These requirements in particular may limit the occurrence of the pathogen in California fields and subsequently, the pathogen may be more of a problem under controlled environments of greenhouses.\u00a0 Conidia germinate, penetrate host tissue by means of specialized hyphae (appresoria) and invade host tissue.<\/p>\n<p><strong>Transmission:\u00a0<\/strong> Wind, wind-driven rain, cultivation tools, and human contact.<\/p>\n<p><strong><u>Worldwide Distribution<\/u>:<\/strong> <em>Asia<\/em>: China, India, Israel, Japan, Korea, Thailand; <em>Africa<\/em>: Angola, Nigeria; <em>Europe<\/em>: United Kingdom; <em>North America<\/em>: Canada, Panama, USA (California, Florida, North Carolina); <em>Australia<\/em> (Farr &amp; Rossman, 2016; Li <em>et al<\/em>., 2014; Prihastuti <em>et al<\/em>., 2009; Wang <em>et al.<\/em>, 2016, Weir <em>et al<\/em>., 2012; Zhang <em>et al.,<\/em> 2015).<\/p>\n<p><strong><u>Official Control<\/u>:\u00a0<\/strong> In California <em>C. fructicola<\/em> is an actionable, Q-rated pathogen, and infected plant material is subject to destruction or rejection.<\/p>\n<p><strong><u>California Distribution<\/u>:<\/strong> <em>Colletotrichum fructicola <\/em>was detected in a nursery in San Diego County (see \u201cInitiating Event\u201d).<\/p>\n<p><strong><u>California Interceptions<\/u>:<\/strong> \u00a0During 2015-16, <em>Colletotrichum fructicola<\/em> has been intercepted several times mainly in shipments of mango and black sapote fruits, Dracaena and Chinese evergreen cuttings that originated in Costa Rica, Puerto Rico, and Florida (see \u2018Initiating event\u2019).<\/p>\n<p>The risk <em>Colletotrichum fructicola<\/em> would pose to California is evaluated below.<\/p>\n<h5><strong>Consequences of Introduction:\u00a0 <\/strong><\/h5>\n<p><strong>1) <span style=\"text-decoration: underline;\">Climate\/Host Interaction<\/span>:<\/strong> Evaluate if the pest would have suitable hosts and climate to establish in California. Score:<\/p>\n<p style=\"padding-left: 30px;\">&#8211; Low (1) Not likely to establish in California; or likely to establish in very limited areas.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\">&#8211; <strong>Medium (2)<\/strong> may be able to establish in a larger but limited part of California.<\/span><\/p>\n<p style=\"padding-left: 30px;\">&#8211; High (3) likely to establish a widespread distribution in California.<\/p>\n<p style=\"padding-left: 30px;\"><strong><em><span style=\"color: #008000;\">Risk is Medium (2)<\/span> <\/em><\/strong><em>\u2013 Similar to other species of <\/em>Colletotrichum<em>, <\/em>C. fructicola<em> requires humid, wet, rainy weather for conidia to infect host plants. This environmental requirement may limit the ability of the pathogen to fully establish and spread under dry field conditions in California.<\/em><\/p>\n<p><strong>2) <span style=\"text-decoration: underline;\">Known Pest Host Range<\/span>:<\/strong> Evaluate the host range of the pest. Score:<\/p>\n<p style=\"padding-left: 30px;\">&#8211; Low (1) has a very limited host range.<\/p>\n<p style=\"padding-left: 30px;\">&#8211; Medium (2) has a moderate host range.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\">&#8211; <strong>High (3)<\/strong> has a wide host range.<\/span><\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong><em>Risk is High (3) <\/em><\/strong><\/span>\u2013 <em>The host range of <\/em>Colletotrichum fructicola <em>is relatively wide and diverse and includes several tropical and subtropical plants, as well as agricultural and ornamental crops grown in California.<\/em><\/p>\n<p><strong>3)\u00a0<span style=\"text-decoration: underline;\">Pest Dispersal Potential<\/span>:<\/strong> Evaluate the natural and artificial dispersal potential of the pest. Score:<\/p>\n<p style=\"padding-left: 30px;\">&#8211; Low (1) does not have high reproductive or dispersal potential.<\/p>\n<p style=\"padding-left: 30px;\">&#8211; Medium (2) has either high reproductive or dispersal potential.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\">&#8211; <strong>High (3)<\/strong> has both high reproduction and dispersal potential.<\/span><\/p>\n<p style=\"padding-left: 30px;\"><strong><em><span style=\"color: #008000;\">Risk is High (3)<\/span> <\/em><\/strong><em>\u2013 The pathogen has high reproductive potential and conidia are produced successively.\u00a0 They are transmitted by wind, wind-driven rain, cultivation tools, and human contact however conidial germination and plant infection require long, wet periods.<\/em><\/p>\n<p><strong>4) <span style=\"text-decoration: underline;\">Economic Impact<\/span>:<\/strong> Evaluate the economic impact of the pest to California using the criteria below. Score:<\/p>\n<p style=\"padding-left: 30px;\">A. \u00a0The pest could lower crop yield.<\/p>\n<p style=\"padding-left: 30px;\">B. \u00a0The pest could lower crop value (includes increasing crop production costs).<\/p>\n<p style=\"padding-left: 30px;\">C. \u00a0The pest could trigger the loss of markets (includes quarantines).<\/p>\n<p style=\"padding-left: 30px;\">D. \u00a0The pest could negatively change normal cultural practices.<\/p>\n<p style=\"padding-left: 30px;\">E. \u00a0The pest can vector, or is vectored, by another pestiferous organism.<\/p>\n<p style=\"padding-left: 30px;\">F. \u00a0The organism is injurious or poisonous to agriculturally important animals.<\/p>\n<p style=\"padding-left: 30px;\">G. \u00a0The organism can interfere with the delivery or supply of water for agricultural uses.<\/p>\n<p style=\"padding-left: 30px;\">&#8211; Low (1) causes 0 or 1 of these impacts.<\/p>\n<p style=\"padding-left: 30px;\">&#8211; Medium (2) causes 2 of these impacts.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\">&#8211; <strong>High (3)<\/strong> causes 3 or more of these impacts.<\/span><\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong><em>Risk is High (3)<\/em><\/strong><\/span><em> \u2013Under suitable, wet climates, the pathogen could lower plant growth, fruit production and value and trigger the loss of markets.<\/em><\/p>\n<p><strong>5) <span style=\"text-decoration: underline;\">Environmental Impact<\/span>:<\/strong> Evaluate the environmental impact of the pest on California using the criteria below.<\/p>\n<p style=\"padding-left: 30px;\">The pest could have a significant environmental impact such as lowering biodiversity, disrupting natural communities, or changing ecosystem processes.<\/p>\n<p style=\"padding-left: 30px;\">The pest could directly affect threatened or endangered species.<\/p>\n<p style=\"padding-left: 30px;\">The pest could impact threatened or endangered species by disrupting critical habitats.<\/p>\n<p style=\"padding-left: 30px;\">The pest could trigger additional official or private treatment programs.<\/p>\n<p style=\"padding-left: 30px;\">The 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;\">&#8211; Low (1) causes none of the above to occur.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\">&#8211; <strong>Medium (2)<\/strong> causes one of the above to occur.<\/span><\/p>\n<p style=\"padding-left: 30px;\">&#8211; High (3) causes two or more of the above to occur.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong><em>Risk is <\/em><\/strong><strong><em>Medium (2<\/em><\/strong><\/span><strong><em><span style=\"color: #008000;\">)<\/span> <\/em><\/strong><em>\u2013 The pathogen could significantly impact cultural practices or home garden plantings.<\/em><\/p>\n<h5>Consequences of Introduction to California for <em>Colletotrichum fructicola:<\/em><\/h5>\n<p>Add up the total score and include it here. (Score)<\/p>\n<p style=\"padding-left: 30px;\">-Low = 5-8 points<\/p>\n<p style=\"padding-left: 30px;\">-Medium = 9-12 points<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\">&#8211;<strong>High<\/strong> = 13-15 points<\/span><\/p>\n<p>Total points obtained on evaluation of consequences of introduction of <em>Colletotrichum fructicola<\/em> to California = <strong><span style=\"color: #008000;\">(13)<\/span>.<\/strong><\/p>\n<p><strong>6) <span style=\"text-decoration: underline;\">Post Entry Distribution and Survey Information<\/span><\/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>-Not established (0) Pest never detected in California, or known only from incursions.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\">&#8211;<strong>Low (-1)<\/strong> Pest has a localized distribution in California, or is established in one suitable climate\/host area (region).<\/span><\/p>\n<p style=\"padding-left: 30px;\">-Medium (-2) Pest is widespread in California but not fully established in the endangered area, or pest established in two contiguous suitable climate\/host areas.<\/p>\n<p style=\"padding-left: 30px;\">-High (-3) 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><span style=\"color: #008000;\">Evaluation is Low (-1)<\/span> <\/em><\/strong><em>&#8211;<\/em> Colletotrichum fructicola<em> was detected in a nursery in San Diego County.<\/em><\/p>\n<h5>Final Score:<\/h5>\n<p><strong>7) The final score is<\/strong> the consequences of introduction score minus the post entry distribution and survey information score: (Score)<\/p>\n<p><span style=\"color: #008000;\"><strong><em>Final Score: <\/em><\/strong><\/span><em>\u00a0Score of Consequences of Introduction \u2013 Score of Post Entry Distribution and Survey Information <span style=\"color: #008000;\"><strong>=<\/strong> <strong>12.<\/strong><\/span><\/em><\/p>\n<h5><strong>Uncertainty:<\/strong><\/h5>\n<p><em>Periodic surveys need to be conducted to confirm the presence\/absence of <\/em>C. fructicola<em> in commercial and private production regions within California.\u00a0 Subsequent results may alter the herein proposed rating for the pathogen<\/em>.<\/p>\n<h5><strong>Conclusion and Rating Justification: <\/strong><\/h5>\n<p>Based on the evidence provided above <strong>the proposed rating for the anthracnose pathogen, <em>Colletotrichum fructicola<\/em> is <span style=\"color: #008000;\">B<\/span>.<\/strong><\/p>\n<h5>References:<\/h5>\n<p><strong>C<\/strong>ABI.\u00a0 2016.\u00a0 <em>Colletotrichum fructicola<\/em> basic datasheet report.\u00a0 Crop Protection Compendium.\u00a0 <a href=\"http:\/\/www.cabi.org\/cpc\/\" target=\"_blank\" rel=\"noopener\">www.cabi.org\/cpc\/<\/a><\/p>\n<p><strong>F<\/strong>arr, D. F., &amp; A. Y. Rossman.\u00a0 Fungal databases, systematic mycology and microbiology laboratory, ARS, USDA. Retrieved April 3, 2016, from<\/p>\n<p><a href=\"http:\/\/nt.ars-grin.gov\/fungaldatabases\/\" target=\"_blank\" rel=\"noopener\">http:\/\/nt.ars-grin.gov\/fungaldatabases\/<\/a><\/p>\n<p><a href=\"http:\/\/www.sciencedirect.com\/science\/article\/pii\/S0261219414000064\" target=\"_blank\" rel=\"noopener\"><strong>J<\/strong>. Jiang, Zhai, H. Li, Z. Wang, Y. Chen, N. Hong, G. Wang, G. N. Chofong, and W. Xu. 2014. <\/a>Identification and characterization of <em>Colletotrichum fructicola<\/em> causing black spots on young fruits related to bitter rot of pear (<em>Pyrus bretschneideri <\/em>Rehd.) in China.\u00a0 Crop Protection 58:41-48.<\/p>\n<p><strong>Li, H.N., Jiang, J.J., Hong, N., Wang, G.-P., and Xu, W.X.<\/strong> 2013. First Report of <strong><em>Colletotrichum fructicola<\/em><\/strong> Causing Bitter Rot of Pear<strong> (<strong><em>Pyrus bretschneideri<\/em><\/strong>) <\/strong>in China. Plant Disease 97:1000. <a href=\"http:\/\/dx.doi.org\/10.1094\/PDIS-01-13-0084-PDN\" target=\"_blank\" rel=\"noopener\">http:\/\/dx.doi.org\/10.1094\/PDIS-01-13-0084-PDN<\/a>.<\/p>\n<p><strong>P<\/strong>rihastuti, H., L. Cai, H. Chen, E. H. C. McKenzie, and K. D. Hyde. \u00a02009. Characterization of <em>Colletotrichum <\/em>species associated with coffee berries in northern Thailand. Fungal Diversity 39: 89-109.<\/p>\n<p><strong>W<\/strong>ang, H. C., Y. F. Huang, Q. Chen, M. S. Wang, H. Q. Xia, S. H. Shang, and C. Q. Zhang.\u00a0 2016.\u00a0 Anthracnose caused by Colletotrichum fructicola on tobacco (Nicotiana tabacum) in China.\u00a0 Plant Disease (posted on line March 8, 2016). <a href=\"http:\/\/dx.doi.org\/10.1094\/PDIS-06-15-0724-PDN\" target=\"_blank\" rel=\"noopener\">http:\/\/dx.doi.org\/10.1094\/PDIS-06-15-0724-PDN<\/a>.<\/p>\n<p><strong>W<\/strong>eir, B. S., P. R. Johnston, and U. Damm.\u00a0 2012.\u00a0 The <em>Colletotrichum gloeosporioides<\/em> species complex.\u00a0 Studies in Mycology, 73:115-180. DOI:10.3114\/sim0011.<\/p>\n<p><strong>P<\/strong>.\u00a0F.\u00a0Zhang, L.\u00a0F.\u00a0Zhai, X.\u00a0K.\u00a0Zhang, X.\u00a0Z.\u00a0Huang, N.\u00a0Hong, W.\u00a0Xu, and G.\u00a0Wang. Characterization of <em>Colletotrichum fructicola<\/em>, a new causal agent of leaf black spot disease of sandy pear (<em>Pyrus pyrifolia<\/em>).\u00a0 European Journal of Plant Pathology 143:651-662.<\/p>\n<hr \/>\n<h5>Responsible Party:<\/h5>\n<p>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<h5>Comment Format:<\/h5>\n<p>\u2666 \u00a0Comments should refer to the appropriate California Pest Rating Proposal Form subsection(s)\u00a0being commented on, as shown below.<\/p>\n<p style=\"padding-left: 30px;\"><strong><span style=\"text-decoration: underline;\">Example Comment<\/span>:\u00a0<\/strong><\/p>\n<p style=\"padding-left: 30px;\">Consequences of Introduction: \u00a01. Climate\/Host Interaction:\u00a0[<em>Your comment that relates to \u201cClimate\/Host Interaction\u201d here.<\/em>]<\/p>\n<p>\u2666 \u00a0Posted comments will not be able to be viewed immediately.<\/p>\n<p>\u2666 \u00a0Comments may not be posted if they:<\/p>\n<p style=\"padding-left: 30px;\">Contain inappropriate language which is not germane to\u00a0the pest rating proposal;<\/p>\n<p style=\"padding-left: 30px;\">Contains defamatory, false, inaccurate, abusive, obscene, pornographic,\u00a0sexually oriented, threatening, racially offensive, discriminatory or illegal\u00a0material;<\/p>\n<p style=\"padding-left: 30px;\">Violates agency regulations prohibiting sexual harassment or other forms\u00a0of discrimination;<\/p>\n<p style=\"padding-left: 30px;\">Violates agency regulations prohibiting workplace violence, including threats.<\/p>\n<p>\u2666 \u00a0Comments may be edited prior to posting to ensure they are entirely germane.<\/p>\n<p>\u2666 \u00a0Posted comments shall be those which have been approved in content and posted to the\u00a0website to be viewed, not just submitted.<\/p>\n<hr \/>\n<h3 style=\"text-align: left;\">Pest Rating: \u00a0B<\/h3>\n<hr \/>\n<p style=\"text-align: left;\"><em>Posted by ls<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>California Pest Rating for Colletotrichum fructicola Prihastuti, L. Cai &amp; K. D. Hyde, 2009 Pest Rating: \u00a0B PEST RATING PROFILE Initiating Event: On March 29, 2016, a shipment of Chinese evergreen (Aglaonema sp.)\u00a0 cuttings showing leaf spotting symptoms and destined to a nursery in San Luis Obispo County, was intercepted and sampled by San Luis &hellip; <a href=\"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1931\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Colletotrichum fructicola Prihastuti, L. Cai &#038; K. D. Hyde, 2009<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1117,"featured_media":0,"comment_status":"open","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_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":[8,4],"tags":[329,46,41],"class_list":["post-1931","post","type-post","status-publish","format-standard","hentry","category-fungi","category-plant-pathology","tag-colletotrichum-fructicola","tag-fungi-2","tag-plant-pathogens"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5l8vQ-v9","jetpack-related-posts":[{"id":7913,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=7913","url_meta":{"origin":1931,"position":0},"title":"Colletotrichum karstii Yan L. Yang, Zuo Y. Liu, K. D. Hyde &#038; L. Cai 2011","author":"Heather.Martin","date":"December 22, 2020","format":false,"excerpt":"California Pest Rating for Colletotrichum karstii Yan L. Yang, Zuo Y. Liu, K.D. Hyde & L. Cai 2011Pest Rating: C DOWNLOAD PEST RATING *NOTE\u00a0 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\u2026","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":1369,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1369","url_meta":{"origin":1931,"position":1},"title":"Colletotrichum siamense Prihastuti, L. Cai &#038; K. D. Hyde, 2009","author":"Admin","date":"December 18, 2015","format":false,"excerpt":"California Pest Rating Proposal for Colletotrichum siamense Prihastuti, L. Cai & K. D. Hyde, 2009 Pest Rating: B PEST RATING PROFILE Initiating Event: \u00a0 On June 26, 2015, a California Dog Team intercepted Cacao seed pods with necrotic spots at a parcel distribution facility in Mariposa County and sent a\u2026","rel":"","context":"In &quot;Fungi&quot;","block_context":{"text":"Fungi","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=8"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1141,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1141","url_meta":{"origin":1931,"position":2},"title":"Colletotrichum asianum Prihastuti, L. Cai &#038; K. D. Hyde, 2009","author":"Admin","date":"October 9, 2015","format":false,"excerpt":"California Pest Rating for Colletotrichum asianum Prihastuti, L. Cai & K. D. Hyde, 2009 Pest Rating: B PEST RATING PROFILE Initiating Event: During July, 2014, mango fruit exhibiting spots or lesions were intercepted by the CDFA Dog Team in Santa Clara County and samples of symptomatic fruit were sent to\u2026","rel":"","context":"In &quot;Fungi&quot;","block_context":{"text":"Fungi","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=8"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6740,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=6740","url_meta":{"origin":1931,"position":3},"title":"Monilinia fructicola (G. Winter) Honey 1928","author":"Heather.Martin","date":"January 21, 2020","format":false,"excerpt":"California Pest Rating for Monilinia fructicola (G. Winter) Honey 1928 Brown fruit rot Pest Rating: C 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. Posted by ka","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":4275,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=4275","url_meta":{"origin":1931,"position":4},"title":"Colletotrichum cliviae Y.L. Yang, Zuo Y. Liu, K.D. Hyde &#038; L. Cai, 2009","author":"Admin","date":"December 4, 2017","format":false,"excerpt":"California Pest Rating for Colletotrichum cliviae Y.L. Yang, Zuo Y. Liu, K.D. Hyde & L. Cai, 2009 PEST RATING: B PEST RATING PROFILE Initiating Event: On October 17, 2017, diseased leaves of variegated croton plants (Codiaeum variegata) exhibiting leaf spotting symptoms, were collected from a nursery in San Diego, by\u2026","rel":"","context":"In &quot;Fungi&quot;","block_context":{"text":"Fungi","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=8"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1518,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1518","url_meta":{"origin":1931,"position":5},"title":"Colletotrichum cordylinicola Phoulivong, L. Cai &#038; K. D. Hyde, 2011","author":"Admin","date":"January 20, 2016","format":false,"excerpt":"California Pest Rating Proposal for Colletotrichum cordylinicola Phoulivong, L. Cai & K. D. Hyde, 2011 Pest Rating: B PEST RATING PROFILE Initiating Event: \u00a0 On October 6, 2015 a shipment of Green Ti plant cuttings (Cordyline glauca) showing leaf blight symptoms and destined to a nursery in San Diego County,\u2026","rel":"","context":"In &quot;Fungi&quot;","block_context":{"text":"Fungi","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=8"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/posts\/1931","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/users\/1117"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1931"}],"version-history":[{"count":10,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/posts\/1931\/revisions"}],"predecessor-version":[{"id":10482,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/posts\/1931\/revisions\/10482"}],"wp:attachment":[{"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1931"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1931"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}