Vera K. Chizhik, Maria A. Kuznetsova, Elena V. Rogozina, Viktor V. Martynov
{"title":"Polymorphism of Avr Genes in Russian Populations of Phytophthora infestans","authors":"Vera K. Chizhik, Maria A. Kuznetsova, Elena V. Rogozina, Viktor V. Martynov","doi":"10.1111/jph.13400","DOIUrl":"https://doi.org/10.1111/jph.13400","url":null,"abstract":"<div>\u0000 \u0000 <p>The oomycete <i>Phytophthora infestans</i> (Mont.) de Bary is a causative agent of the most harmful potato disease, late blight. The pathogenicity of <i>P. infestans</i> is associated with (a)virulence genes (<i>Avr</i> genes). Changes in the composition and nucleotide sequence of these genes lead to the emergence of new races of the pathogen, which affect potato varieties previously considered resistant. Therefore, to successfully combat late blight, it is important to study polymorphisms in <i>Avr</i> genes in populations of this pathogen. We conducted a large-scale molecular and phytopathological study of <i>P. infestans</i> strains collected in European Russia. In this study, polymorphisms of 11 <i>Avr</i> genes were analysed using SSCP analysis and sequencing. The genes included <i>Avr1</i>, <i>Avr2</i>, <i>Avr2</i>-<i>like</i>, <i>Avr3a</i>, <i>Avr3b</i>, <i>Avr4</i>, <i>Avr8</i>, <i>Avr</i>-<i>Smira1</i>, <i>Avr</i>-<i>blb1</i>, <i>Avr</i>-<i>blb2</i> and <i>Avr</i>-<i>vnt1</i>. As a result, the allelic composition of <i>Avr</i> genes was studied and new alleles unique to Russia were identified in Russian populations of <i>P. infestans</i> for all studied <i>Avr</i> genes, with the exception of <i>Avr4</i> and <i>Avr8</i>. The vast majority of the <i>Avr1</i>, <i>Avr2</i>-<i>like</i>, <i>Avr3a</i>, <i>Avr4</i>, <i>Avr</i>-<i>vnt1</i> and <i>Avr</i>-<i>Smira1</i> gene sequences correspond to known virulence variants of these genes that avoid recognition by the corresponding potato resistance genes. The <i>Avr</i>-<i>blb2</i> gene was represented by approximately equal amounts of virulent and avirulent variants. Predominantly avirulent variants were found for the <i>Avr</i>-<i>blb1</i> gene. The <i>Avr2</i>, <i>Avr3b</i> and <i>Avr8</i> genes were represented only by avirulent variants. Summarising the results of our study, we can conclude that the populations of the European territory of Russia differ from the populations of Europe and the USA in the allelic composition of virulence genes. We failed to detect a dominant clonal lineage in the territory of Russia, and the Russian population of <i>P. infestans</i> is highly diverse.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"172 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142359939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Perry Lorraine Duran Canare, Roselyn Jove Uy, Shinju Konishi, Hana Tonami, Dionisio G. Alvindia, Chiharu Nakashima
{"title":"Development of Loop-Mediated Isothermal Amplification (LAMP) Kit for the Detection of Fusarium Wilt Using SIX8 Genes","authors":"Perry Lorraine Duran Canare, Roselyn Jove Uy, Shinju Konishi, Hana Tonami, Dionisio G. Alvindia, Chiharu Nakashima","doi":"10.1111/jph.13398","DOIUrl":"https://doi.org/10.1111/jph.13398","url":null,"abstract":"<p>Panama disease, or <i>Fusarium</i> wilt, is a soil-borne fungal disease of <i>Musa</i> spp. and the most severe threat to the banana industry and food security worldwide with no cure. Therefore, early detection of the pathogen <i>Fusarium oxysporum</i> f. sp. <i>cubense</i> (<i>Foc</i>) through reliable diagnostics will aid in implementing plant quarantine and containment measures to prevent the spread of this disease. In this study, a primary diagnostic procedure was developed based on the DNA sequences of the <i>Foc</i>-TR4 <i>SIX8a</i> homologue, extracted from a piece of pseudostem tissue of <i>M. acuminata</i> Gros Michel Subgroup from Japan. A set of primers for the loop-mediated isothermal amplification (LAMP) reaction was designed. The developed specific marker can be used to accurately, rapidly, and reliably detect early diagnosis of <i>Foc</i>-TR4 infection without cutting down the unconfirmed young plant in banana fields.</p>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"172 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jph.13398","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Identification of Major Locus Conferring Resistance to Urdbean Leaf Crinkle Disease in Black Gram [Vigna mungo (L.) Hepper]","authors":"Sathya Palanivelu, Manivannan Narayana, Viswanathan Palaniappan","doi":"10.1111/jph.13402","DOIUrl":"https://doi.org/10.1111/jph.13402","url":null,"abstract":"<div>\u0000 \u0000 <p>Urdbean leaf crinkle disease (ULCD) is a major factor causing severe yield loss in black gram production. The identification of quantitative trait loci (QTL) linked to ULCD resistance is highly useful in breeding programmes. A mapping population was developed from a cross between the resistant parent CO 5 and the susceptible parent TU 68. ULCD screening was carried out through the artificial sap inoculation method. In the F<sub>2:3</sub> population, the ULCD score was assessed 60 days after infection. Composite interval mapping was carried out with a 1000-run permutation. Another mapping population, VBN(Bg) 4 × CO 5 in F<sub>2:3</sub> generation was used to validate the identified QTL. A single locus, qULCD3.1 was identified in linkage group 3. It explains 17.98% of the variation in ULCD resistance. Markers VR086 and CEDG 305 flanked the QTL region. The marker CEDG 305 explains 20.5% of the phenotypic variation for ULCD resistance in the validation population VBN(Bg) 4 × CO 5. This is the first report to identify a QTL for ULCD disease resistance. The identified markers can be used to incorporate ULCD resistance in black gram through marker-assisted selection.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"172 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142324610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Perla R. Nuñez-García, Willie A. S. Vieira, Isabel Cruz-Lachica, Raymundo S. García-Estrada, Isidro Marquez-Zequera, Guillermo Márquez-Licona, Juan M. Tovar-Pedraza
{"title":"Occurrence of Phytopythium helicoides Causing Root and Crown Rot of Blueberry in Mexico","authors":"Perla R. Nuñez-García, Willie A. S. Vieira, Isabel Cruz-Lachica, Raymundo S. García-Estrada, Isidro Marquez-Zequera, Guillermo Márquez-Licona, Juan M. Tovar-Pedraza","doi":"10.1111/jph.13403","DOIUrl":"https://doi.org/10.1111/jph.13403","url":null,"abstract":"<div>\u0000 \u0000 <p>In August 2023, severe symptoms of crown and root rot were detected on blueberry plants in two commercial fields located in Guasave, Sinaloa, Mexico. Colonies with oomycete morphology were obtained and two isolates were purified. The causal agent was identified as <i>Phytopythium helicoides</i> by a combination of morphological studies, pathogenicity tests, and phylogenetic analysis including data from internal transcribed spacer and large subunit sequences. This is the first report of <i>P. helicoides</i> causing crown and root rot of blueberry worldwide.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"172 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142324611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Benjamin Azu Okorley, Sabine Ravnskov, Francis C. Brentu, Samuel K. Offei
{"title":"Characterisation of Fusarium and Neocosmospora Species Associated With Crown Rot and Wilt of African Eggplant (Solanum aethiopicum) in Ghana","authors":"Benjamin Azu Okorley, Sabine Ravnskov, Francis C. Brentu, Samuel K. Offei","doi":"10.1111/jph.13393","DOIUrl":"https://doi.org/10.1111/jph.13393","url":null,"abstract":"<p>African eggplant (AEP) (<i>Solanum aethiopicum</i> group Gilo) is an important vegetable with considerable economic value in Ghana and tropical Africa. However, fungal diseases threaten its cultivation. Surveys conducted in 2021 and 2022 growing seasons across 35 commercial farms in five regions of Ghana revealed symptoms of crown rot and wilt affecting AEP. This study was undertaken to identify and characterise 36 fungal isolates causing these diseases in AEPs using morphological, molecular and pathogenicity assays. Morphological and molecular analyses of the <i>Btub2</i>, <i>Tef-1α</i> and <i>Rpb2</i> sequences identified two <i>Fusarium</i> species (<i>F</i>. <i>elaeidis</i> and <i>F</i>. <i>fredkrugeri</i>) and three <i>Neocosmospora</i> species (<i>N</i>. <i>falciforme</i>, <i>N</i>. <i>suttoniana</i> and <i>N</i>. <i>solani</i>) associated with the plant diseases. <i>F</i>. <i>elaeidis</i> (14 isolates) and <i>N</i>. <i>falciforme</i> (14) were the most commonly isolated species from symptomatic plants. Specifically, <i>F</i>. <i>elaeidis</i> was found in wilting plants, while <i>F</i>. <i>fredkrugeri</i> and the three <i>Neocosmospora</i> spp. were more associated with wilting plants with crown rot symptoms than plants with only wilt symptoms. All identified species exhibited pathogenicity when inoculated onto AEP roots and stems, confirming field observations. <i>F</i>. <i>elaeidis</i> was the most aggressive in inducing wilt symptoms, while <i>N</i>. <i>solani</i> and <i>N</i>. <i>suttoniana</i> were particularly aggressive in inducing crown rot symptoms. This study is the first to document that <i>F</i>. <i>elaeidis</i>, <i>F</i>. <i>fredkrugeri</i>, <i>N</i>. <i>falciforme</i> and <i>N</i>. <i>suttoniana</i> are pathogens causing wilt and crown rot in AEP in Ghana. These findings provide essential insights for developing effective disease management strategies to reduce losses from these fungal species.</p>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"172 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jph.13393","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142313395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hexing Qi, Xiangxing Qi, Wenhua Xu, Zhouluo An, Taiyan Fan
{"title":"First Report of Root Rot Caused by Fusarium avenaceum and Fusarium flocciferum on Astragalus membranaceus var. mongholicus in China","authors":"Hexing Qi, Xiangxing Qi, Wenhua Xu, Zhouluo An, Taiyan Fan","doi":"10.1111/jph.13397","DOIUrl":"https://doi.org/10.1111/jph.13397","url":null,"abstract":"<div>\u0000 \u0000 <p><i>Astragalus membranaceus</i> var. <i>mongholicus</i> (Mongolian milkvetch) is one of the most important traditional Chinese medicinal plants. In July 2021, root rot of <i>A</i>. <i>membranaceus</i> var. <i>mongholicus</i> was found in a field in Tongren City, Huangnan Tibetan Autonomous Prefecture, Qinghai Province, China. The aboveground part of the plants exhibited yellowing, wilting and defoliation in severe cases. Seven fungal isolates were obtained, and their pathogenicity, morphology and phylogeny were analysed. A pathogenicity test was performed using the scratch and root irrigation methods, and the results showed that all seven isolates caused root rot on inoculated plants. Based on morphological characteristics and phylogenetic analysis of multi-locus sequences (ITS, translation elongation factor [<i>TEF-1α</i>], and RNA polymerase II beta subunit [<i>RPB2</i>] genes), two isolates were identified as <i>Fusarium avenaceum</i>, and five isolates were identified as <i>F</i>. <i>flocciferum</i>. To the best of our knowledge, this is the first report of <i>F</i>. <i>avenaceum</i> and <i>F</i>. <i>flocciferum</i> causing root rot of <i>A</i>. <i>membranaceus</i> var. <i>mongholicus</i> in China.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"172 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Embracing Biological Control of Septoria Tritici Blotch for Sustainable Wheat Protection","authors":"Marta Suarez-Fernandez, Agustina De Francesco","doi":"10.1111/jph.13395","DOIUrl":"https://doi.org/10.1111/jph.13395","url":null,"abstract":"<p>Wheat, one of the top-produced cereals worldwide, is affected by many abiotic and biotic stresses, such as the ascomycete fungus <i>Zymoseptoria tritici</i>, the causal agent of Septoria tritici blotch (STB). STB has historically been managed with fungicides, but the pathogen readily overcomes chemical control because of its rapid genetic evolution. In addition, many fungicides are now being banned or limited by governments aiming for more environment-friendly methods for pest management. This scenario gave rise to thinking about alternative control means such as biological control agents (BCAs) and organism-derived biomolecules (ODBs). In this work, we review microbial BCA candidates and ODBs currently studied for the control of STB. Key studies have identified successful candidates including bacterial strains of the genera <i>Pseudomonas</i> and <i>Bacillus</i>, and fungal strains such as <i>Trichoderma harzianum</i>, <i>Penicillium olsonii</i> and <i>Acremonium alternatum</i>. In addition, lesser-studied fungi, bacteria and compounds have been tested. Despite promising research, no BCA or ODB has been registered or commercially used against STB, and field trials are notably lacking, with existing studies being limited in scale. Further understanding of the interactions between <i>Z. tritici</i> and the wheat microbiome may uncover new potential candidates for STB biocontrol.</p>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"172 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jph.13395","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142273257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
María Alejandra Favaro, Roxana Lorena Maumary, Alejandra Lutz, Marcelo Carlos Soressi, Eleodoro Del Valle, Laura Noemí Fernandez
{"title":"Fusarium Species Causing Dry Rot of Carrot in Central Argentina","authors":"María Alejandra Favaro, Roxana Lorena Maumary, Alejandra Lutz, Marcelo Carlos Soressi, Eleodoro Del Valle, Laura Noemí Fernandez","doi":"10.1111/jph.13396","DOIUrl":"https://doi.org/10.1111/jph.13396","url":null,"abstract":"<div>\u0000 \u0000 <p>Carrot (<i>Daucus carota</i> L. subsp. <i>sativus</i>) cultivation is important in Argentina, with the Garay department in Santa Fe province being a key production area. In recent years, dry rot symptoms have afflicted various carrot cultivars, resulting in substantial field losses and postharvest discards. Several soilborne pathogens, including <i>Fusarium</i> species, have been implicated in similar carrot diseases globally. This study aimed to identify the specific causal agent responsible for dry rot in carrots in central Argentina to enable targeted disease management strategies. Samples of symptomatic carrots were collected from fields in the Garay department. Fungal isolates were obtained from the infected tissue and subjected to morphological and molecular analyses. Pathogenicity tests were conducted to confirm the ability of the isolates to cause disease symptoms in carrots. Based on morphological and molecular identification, isolates were identified as <i>Fusarium nirenbergiae, Fusarium triseptatum</i> and <i>Fusarium solani.</i> Pathogenicity tests demonstrated that the three <i>Fusarium</i> species were capable of causing dry rot symptoms in carrots. This study represents the first report of <i>Fusarium nirenbergiae, Fusarium triseptatum</i> and <i>Fusarium solani</i> causing dry rot in carrots in Argentina.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"172 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142273029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Seed Treatment With Fungicides and Biocontrol Agents for Fusarium Wilt Management and Improvement of Seed Quality in Lentil","authors":"Sunil Jadhav, Atul Kumar, Jameel Akthar, Praveen Patted, Gyna P. Mishra, Muralidhar Aski, Sakshi Tomar","doi":"10.1111/jph.13389","DOIUrl":"https://doi.org/10.1111/jph.13389","url":null,"abstract":"<div>\u0000 \u0000 <p>Lentil (<i>Lens culinaris</i>) is an important pulse crop in India. Fusarium wilt caused by <i>Fusarium oxysporum</i> f. sp. <i>lentis</i> (<i>Fol</i>), is a major biotic constraint in lentil production. The present investigation was undertaken to evaluate the efficacy of combination products of fungicides and bio-agents against <i>Fol</i> under in vitro and in vivo conditions. Fungicides were evaluated using the poisoned food technique, while the antagonistic activity of bio-agents was studied using dual culture technique. Among seven combination products of fungicides, carbendazim 12% + mancozeb 63% was the most effective fungicide in restricting the colony diameter of the pathogen. In field conditions, the seed treatment with carbendazim 12% + mancozeb 63% at 2.5 g/kg seed performed best in both yield and seed quality parameters. Among the bio-agents tested, <i>Trichoderma asperullum</i> gave the best results in suppressing pathogen growth under in vitro conditions. The seed treatment with the combination of <i>T. asperullum + Pseudomonas fluorescens</i> at 5 g/kg seed showed improvement in seed yield and seed quality parameters in the field. The present study has provided chemical and biological measures for the integrated management of lentil wilt.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"172 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142273031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Foliar Resistance to a Natural Population of Plasmopara viticola in Some Grapevine Varieties Grown in Türkiye","authors":"Duygu Mermer Doğu, Nuray Özer","doi":"10.1111/jph.13394","DOIUrl":"https://doi.org/10.1111/jph.13394","url":null,"abstract":"<div>\u0000 \u0000 <p>It is critical to use a population of the pathogen that contains different strains to determine the resistance of grapevine varieties to the downy mildew pathogen <i>Plasmopara viticola</i> in a specific region. This study tested six local grape varieties (Çavuş, Kalecik Karası, Müşküle, Papaz Karası, Sultana and Yapıncak), eight Turkish registered varieties (Barış, Bozbey, Güzgülü, Özer Karası, Reçel Üzümü, Tekirdağ Çekirdeksizi, Trakya İlkeren and Yalova İncisi) and seven varieties of foreign origin (Cabernet Sauvignon, Cardinal, Chardonnay, Cinsault, Isabella, Semillon and Gamay) using detached leaf and leaf disc assays with pathogen populations collected from vineyards. There was a significant correlation for disease severity between the two assay methods. No sporulation was observed on the varieties Çavuş and Isabella in both assay methods. The variety Yapıncak had very low disease severity (2.00%) in the leaf disc assay, and the pathogen did not sporulate on this variety in the detached leaf assay. Cluster analysis was performed to determine the resistance level of the varieties against the pathogen, as different disease severities were observed in some varieties depending on the test method used, and the 21 varieties were classified into four clusters. Barış, Bozbey, Cardinal, Çavuş, Isabella, Semillon and Yapıncak in Cluster I exhibited the lowest disease severity mean (2.88%), while those in Cluster 3, including Cabernet Sauvignon, Güzgülü, Papaz Karası and Yalova Incisi, had the highest disease severity mean (56.75%). These varieties in Clusters 1 and 3 were considered highly resistant and highly susceptible, respectively. Leaf hair density, as reported in official variety descriptions, did not associate with reduced disease severity in the two assays. This study assessed the response of grapevine varieties to the <i>P. viticola</i> population in the region for the first time. The highly resistant and resistant varieties identified will provide new material for breeders and contribute to the improvement of organic viticulture in the area.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"172 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142273033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}