Journal of Phytopathology最新文献

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Efficacy of Trichoderma harzianum as a Natural Biocontrol and Growth-Promoting Agent Against Selected Tomato Fungal Pathogens 哈兹木霉作为天然生物防治和促生剂对番茄真菌病原菌的效果研究
IF 1.1 4区 农林科学
Journal of Phytopathology Pub Date : 2025-07-21 DOI: 10.1111/jph.70130
Tavga Sulaiman Rashid
{"title":"Efficacy of Trichoderma harzianum as a Natural Biocontrol and Growth-Promoting Agent Against Selected Tomato Fungal Pathogens","authors":"Tavga Sulaiman Rashid","doi":"10.1111/jph.70130","DOIUrl":"https://doi.org/10.1111/jph.70130","url":null,"abstract":"<div>\u0000 \u0000 <p>Tomato production faces serious pressure from fungal pathogens, which reduce yield and quality. Biological control could be an approach to minimise the impact of some pathogens by using antagonistic fungi such as <i>Trichoderma</i> species. <i>Trichoderma harzianum</i> has been used widely as a biocontrol agent due to its antagonistic properties against different plant pathogens and its ability to promote plant growth. The present study deals with the efficacy of <i>T. harzianum</i>, isolated from the tomato rhizosphere, in controlling selected fungal pathogens of tomatoes, including <i>Fusarium solani</i>, <i>F. acuminatum</i>, <i>Rhizoctonia solani and Phoma destructiva</i> based on in vitro and in vivo assays. The results showed that <i>T. harzianum</i> inhibited the growth of the above-mentioned pathogens by 88.0% to 100% in dual culture assays after 5–7 days. Tomato plants treated with <i>T. harzianum</i> demonstrated better root and shoot growth compared to untreated controls. In greenhouse tests, maximum disease reductions were recorded in tomato plants treated with <i>T. harzianum</i> and challenged with <i>F. acuminatum</i> (92.4%), <i>P. destructiva</i> (86.6%), <i>R. solani</i> (74.38%) and <i>F. solani</i> (72.76%) in comparison to non-treated. <i>T. harzianum</i> also showed a higher percent disease reduction compared to chemical fungicides. These findings suggest that <i>T. harzianum</i> could be used effectively in integrated pest management practices in fresh tomato cultivation.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"173 4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672948","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}
引用次数: 0
Genetic Diversity of Different Begomoviruses Infecting Tomato in Oman 阿曼番茄不同Begomoviruses的遗传多样性
IF 1.1 4区 农林科学
Journal of Phytopathology Pub Date : 2025-07-19 DOI: 10.1111/jph.70126
Sohail Akhtar, Amir Raza, Muhammad Shafiq, Abdullah M. Al-Sadi, Muhammad Shafiq Shahid
{"title":"Genetic Diversity of Different Begomoviruses Infecting Tomato in Oman","authors":"Sohail Akhtar,&nbsp;Amir Raza,&nbsp;Muhammad Shafiq,&nbsp;Abdullah M. Al-Sadi,&nbsp;Muhammad Shafiq Shahid","doi":"10.1111/jph.70126","DOIUrl":"https://doi.org/10.1111/jph.70126","url":null,"abstract":"<div>\u0000 \u0000 <p>In Oman, vegetable crops, especially tomatoes, have been severely infected by geminivirus disease, with symptoms observed in both the south and north. A comprehensive survey confirmed the presence of Tomato leaf curl diseases (ToLCD), caused by various begomoviruses (family: <i>Geminiviridae</i>). This study reports the characterisation of viruses isolated from tomato exhibiting ToLCD symptoms in both regions. Forty-nine sequences of seven viruses (six monopartite and one bipartite begomoviruses) were analysed. The identified viruses include <i>Tomato yellow leaf curl virus</i>-Oman (TYLCV-OM; <i>Begomovirus coheni</i>), <i>Tomato leaf curl Barka virus</i> (ToLCBrV), <i>Tomato leaf curl Liwa virus</i> (ToLCLwV; <i>Begomovirus solanumliwaense</i>), <i>Tomato leaf curl Sudan virus</i>-Oman (ToLCSDV-OM; <i>Begomovirus solanumsudanense</i>), <i>Cotton leaf curl Gezira virus</i>-Albatinah (CLCuGeV-AB; <i>Begomovirus gossypigeziraense</i>), <i>Chilli leaf curl virus</i>-Oman (ChLCV-OM; <i>Begomovirus chillicapsici</i>) and <i>Mungbean yellow mosaic India virus</i> (MYMIV; <i>Begomovirus vignaradiataindiaense</i>). All clones exhibited high nucleotide identity with the corresponding virus isolates reported previously. The ChLCV-OM clones exhibited 93.54% to 100% nucleotide identity to each other, indicating they belong to the same begomovirus species. Among these, five isolates grouped separately as G1 share 93.54% to 94.08% identity with the remaining 11 isolates grouped as G2. This indicates the occurrence of two strains of ChLCV-OM in tomato in Oman. Twenty-one potentially full-length clones of Tomato leaf curl betasatellite (ToLCB) were also characterised, associated with different ToLCD-infecting begomoviruses. Notably, ToLCLwV and ToLCSDV-OM with ToLCB were also reported, which was not the case previously. The phylogenetic analysis results based on viruses and betasatellites formed closed clusters with the respective viruses and the betasatellites. The findings of this study confirm the significance of geminivirus diseases on tomato crop in Oman and highlight the evolving complexity of ToLCD association.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"173 4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663811","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}
引用次数: 0
Antagonistic Activity of Purpureocillium lilacinum PL2 Against Root-Knot Nematode (Meloidogyne incognita) Infection on Pepper Plants 紫紫色紫霉PL2对辣椒根结线虫的拮抗活性研究
IF 1.1 4区 农林科学
Journal of Phytopathology Pub Date : 2025-07-19 DOI: 10.1111/jph.70132
Hai Nguyen Thi, Xuan Huong Nguyen Thi, Nhi Huynh, Anh Ngan Phan, Thanh Hieu Dinh, Anh Duy Do
{"title":"Antagonistic Activity of Purpureocillium lilacinum PL2 Against Root-Knot Nematode (Meloidogyne incognita) Infection on Pepper Plants","authors":"Hai Nguyen Thi,&nbsp;Xuan Huong Nguyen Thi,&nbsp;Nhi Huynh,&nbsp;Anh Ngan Phan,&nbsp;Thanh Hieu Dinh,&nbsp;Anh Duy Do","doi":"10.1111/jph.70132","DOIUrl":"https://doi.org/10.1111/jph.70132","url":null,"abstract":"<div>\u0000 \u0000 <p>Root-knot nematodes, particularly <i>Meloidogyne incognita</i>, pose a significant threat to pepper (<i>Piper nigrum</i>) cultivation, causing substantial agricultural losses. This study aimed to isolate, characterise and evaluate the effectiveness of the local nematophagous fungus <i>Purpureocillium lilacinum</i> PL2 as a biological control agent against <i>M. incognita</i>. The fungal strain was isolated from pepper plantation soils and underwent comprehensive morphological, molecular and functional characterisation. <i>P. lilacinum</i> PL2 demonstrated remarkable adaptability, surviving in pH ranges of 5–8 and showing consistent growth under various lighting conditions. Enzymatic analysis revealed the potential synthesis of degrading enzymes, including chitinase and protease, which facilitate the destruction of nematode eggshells and cuticles. Sporulation was successfully achieved through solid-state fermentation using cost-effective substrates like rice and maize. In vitro lethal assays demonstrated the fungus's high efficacy in parasitising both nematode eggs (74.33% ± 8.52% mortality) and females (92.5% ± 6.12% mortality). Field trials further validated its potential, revealing a significant 57.7% ± 11.76% reduction in mobile nematode populations after 15 days of treatment. These findings highlight <i>P. lilacinum</i> PL2 as a promising eco-friendly biological control agent, offering a sustainable approach to managing root-knot nematodes in pepper plantations.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"173 4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663812","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}
引用次数: 0
First Report of Fusarium equiseti Causing Postharvest Fruit Rot of Avocado in Türkiye 台湾牛油果采后腐病由马镰刀菌引起初报
IF 1.1 4区 农林科学
Journal of Phytopathology Pub Date : 2025-07-19 DOI: 10.1111/jph.70131
Tuğba Bozoğlu, Sibel Derviş, Göksel Özer, Muharrem Türkkan
{"title":"First Report of Fusarium equiseti Causing Postharvest Fruit Rot of Avocado in Türkiye","authors":"Tuğba Bozoğlu,&nbsp;Sibel Derviş,&nbsp;Göksel Özer,&nbsp;Muharrem Türkkan","doi":"10.1111/jph.70131","DOIUrl":"https://doi.org/10.1111/jph.70131","url":null,"abstract":"<p>In September 2024, postharvest fruit rot, including stem-end rot, was observed on avocado in the Altınordu district of Ordu province, located in the Eastern Black Sea Region of Türkiye. A market survey revealed that 5% of fruit exhibited fruit rot symptoms, a subset of which displayed stem-end rot symptoms, including brown to black lesions extending into the mesocarp, shrivelling and fungal mycelium growth. <i>Fusarium equiseti</i> was identified as the causal agent through morphological characterisation and molecular analysis using PCR amplification and sequencing of translation elongation factor 1-alpha (<i>tef1</i>) and RNA polymerase II second largest subunit (<i>rpb2</i>) gene sequences, including phylogenetic analysis. Artificial inoculation and subsequent re-isolation confirmed Koch's postulates, verifying <i>F</i>. <i>equiseti</i> as the causal pathogen. This is the first report of <i>F</i>. <i>equiseti</i> causing both fruit rot and stem-end rot on avocado in Türkiye, highlighting the need for improved postharvest disease management strategies to reduce economic losses in Türkiye's avocado industry.</p>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"173 4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jph.70131","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663813","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}
引用次数: 0
Spatially-Explicitly Predicting Suitability of Three Apple Diseases in China: A Comparative Analysis of Five Species Distribution Models 中国三种苹果病害适宜性的空间显式预测——五种物种分布模型的比较分析
IF 1.1 4区 农林科学
Journal of Phytopathology Pub Date : 2025-07-15 DOI: 10.1111/jph.70123
Bin Chen, Gang Zhao, Qi Tian, Linjia Yao, Amit Kumar Srivastava, Sen Chen, Ning Yao, Liang He, Qiang Yu
{"title":"Spatially-Explicitly Predicting Suitability of Three Apple Diseases in China: A Comparative Analysis of Five Species Distribution Models","authors":"Bin Chen,&nbsp;Gang Zhao,&nbsp;Qi Tian,&nbsp;Linjia Yao,&nbsp;Amit Kumar Srivastava,&nbsp;Sen Chen,&nbsp;Ning Yao,&nbsp;Liang He,&nbsp;Qiang Yu","doi":"10.1111/jph.70123","DOIUrl":"https://doi.org/10.1111/jph.70123","url":null,"abstract":"<div>\u0000 \u0000 <p>Apple Valsa Canker (AVC), Apple Ring Rot (ARR), and Alternaria Blotch on Apple (ABA) represent major threats to China's apple industry. Understanding the environmental suitability of these diseases is essential for effective orchard management and disease prevention. However, their large-scale spatial distribution and environmental interactions remain insufficiently studied. In this research, we analysed data from 1392 locations using five species distribution models—Generalised Linear Model (GLM), Generalised Additive Model (GAM), Support Vector Machines (SVM), Maximum Entropy (MaxEnt) and Random Forest (RF)—to predict the environmental suitability of these diseases across apple-growing regions in China. Model performance was evaluated using the True Skill Statistic (TSS) and the Area Under the Receiver Operating Characteristic Curve (AUC). MaxEnt and RF consistently outperformed the other models, achieving AUC values above 0.95 and TSS scores exceeding 0.78 for all three diseases. Areas with the highest environmental suitability were primarily located in the Bohai Bay, Loess Plateau and Old Course of the Yellow River regions. Among the environmental variables analysed, the mean temperature of the driest quarter and the annual maximum temperature emerged as the most influential, consistent with the physiological conditions favourable for pathogen development. The key climatic variables identified and their associated disease response curves align with established epidemiological patterns for the three diseases. By integrating ecological insights with predictive modelling, this study provides a robust foundation for targeted disease management and the development of early warning systems under changing climate conditions.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"173 4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635238","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}
引用次数: 0
Viability, Pathogenicity and Fungicide Sensitivity of Botrytis cinerea Isolates After Storage for up to 6 Years 贮藏6年后灰葡萄孢菌的生存力、致病性和杀菌剂敏感性
IF 1.1 4区 农林科学
Journal of Phytopathology Pub Date : 2025-07-11 DOI: 10.1111/jph.70127
Juliana Nicolau Maia, Giovana Beger, Débora Rendoki, Louise Larissa May De Mio, Henrique da Silva Silveira Duarte
{"title":"Viability, Pathogenicity and Fungicide Sensitivity of Botrytis cinerea Isolates After Storage for up to 6 Years","authors":"Juliana Nicolau Maia,&nbsp;Giovana Beger,&nbsp;Débora Rendoki,&nbsp;Louise Larissa May De Mio,&nbsp;Henrique da Silva Silveira Duarte","doi":"10.1111/jph.70127","DOIUrl":"https://doi.org/10.1111/jph.70127","url":null,"abstract":"<p><i>Botrytis cinerea</i> causes pre- and postharvest diseases in several crops. Effective methods for long-term storage to maintain its viability and characteristics are necessary. This study evaluated the viability and pathogenicity of 125 isolates collected in 2017 and stored for 2 and 6 years using four methods: Castellani (water, room temperature), filter paper discs with silica gel (−18°C), glycerol (−18°C), and filter paper strips (−18°C). It also assessed changes in resistance to azoxystrobin, boscalid, fluazinam, and procymidone in 20 isolates. Viability was highest with silica gel and filter paper discs (average 71.2% and 60.0%, respectively), and more than 90% of the viable isolates remained pathogenic on strawberry fruit, except for those stored using the Castellani and glycerol methods after 6 years. Resistance to azoxystrobin and boscalid was stable, while the number of resistant isolates declined by 25% and 30% for fluazinam and procymidone, respectively. Overall, the method utilising silica gel with filter paper discs proved to be the most effective storage method for <i>B. cinerea</i> isolates, and the results confirmed the instability of resistance to fluazinam and procymidone.</p>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"173 4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jph.70127","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606692","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}
引用次数: 0
Prevalence and Pathotype Diversity of Wheat Stem Rust (Puccinia graminis f.sp. tritici) in Eastern Ethiopia 小麦茎锈病的流行及病型多样性埃塞俄比亚东部的小麦
IF 1.1 4区 农林科学
Journal of Phytopathology Pub Date : 2025-07-11 DOI: 10.1111/jph.70113
Mulu Nigus, Mulusew Fikere, Hussein Shimelis
{"title":"Prevalence and Pathotype Diversity of Wheat Stem Rust (Puccinia graminis f.sp. tritici) in Eastern Ethiopia","authors":"Mulu Nigus,&nbsp;Mulusew Fikere,&nbsp;Hussein Shimelis","doi":"10.1111/jph.70113","DOIUrl":"https://doi.org/10.1111/jph.70113","url":null,"abstract":"<p>Stem rust, caused by <i>Puccinia graminis</i> f.sp. <i>tritici</i> (<i>Pgt</i>) is a major constraint to wheat production worldwide, including Ethiopia. Up-to-date information on stem rust epidemics and pathotype diversity is crucial for effective disease management. This study aimed to assess the prevalence and severity of wheat stem rust and characterise Pgt pathotypes in eastern Ethiopia to support resistance breeding. Disease surveys were conducted across five districts in the East-Hararghe Zone (Girawa, Haramaya, Jarso, Malka Ballo and Meta) and three districts in the West-Hararghe Zone (Gamachis, Masela and Tulo) during the main cropping season. A total of 44 wheat fields were surveyed, and 27 stem rust samples were collected. Pathotyping was performed at the Ambo Plant Protection Research Center using 20 North American differential lines. Stem rust was detected in 77.3% of the surveyed fields, with varying disease severity. Five <i>Pgt</i> pathotypes were identified: TKKTF, TTTTF, TKTTF, TKPTF and TTKTT. Notably, the recently detected TTKTT race exhibited virulence against 95% of wheat genotypes, including those carrying the Sr24 resistance gene. This race was isolated from the widely grown variety Ogolcho in the Jarso district. The findings highlight eastern Ethiopia as a hotspot for wheat stem rust, harbouring genetically diverse and highly virulent pathotypes. The insights from this study provide valuable information for targeted disease screening and resistance breeding efforts in Ethiopia and beyond.</p>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"173 4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jph.70113","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606691","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}
引用次数: 0
High-Throughput Sequencing-Based Detection and Characterisation of a Putative Emaravirus Infecting Scaevola taccada 基于高通量测序的一种推测感染镰状鳞翅目的Emaravirus的检测和鉴定
IF 1.1 4区 农林科学
Journal of Phytopathology Pub Date : 2025-07-11 DOI: 10.1111/jph.70128
Haiyan Che, Min Li, Meijiao Hu, Daquan Luo, Haibo Long
{"title":"High-Throughput Sequencing-Based Detection and Characterisation of a Putative Emaravirus Infecting Scaevola taccada","authors":"Haiyan Che,&nbsp;Min Li,&nbsp;Meijiao Hu,&nbsp;Daquan Luo,&nbsp;Haibo Long","doi":"10.1111/jph.70128","DOIUrl":"https://doi.org/10.1111/jph.70128","url":null,"abstract":"<div>\u0000 \u0000 <p><i>Scaevola taccada</i> is an important perennial evergreen shrubby seaside plant that can be used to prevent coastal erosion and to protect cultivated plants against salt spray. In January 2022, a virus-like disease, tentatively named yellow blotch disease (YBD), that severely affected the growth of <i>S. taccada</i> was detected in Sansha City, Hainan Province, China. To identify the pathogen responsible for this disease, we examined the virome profile of a symptomatic <i>S. taccada</i> using ribosomal RNA-depleted total RNA sequencing. Sequence assembly and analysis revealed the presence of eleven viral genome segments in the symptomatic sample encoding a putative RNA-dependent RNA polymerase (RNA1a and RNA1b), glycoprotein precursor (RNA2a and RNA 2b), nucleocapsid protein (RNA3a and RNA3b), movement protein (RNA4a and RNA4b) and P5 (RNA5) and P6 proteins (RNA6a and RNA6b) of unknown function, respectively. Molecular signatures in the viral RNAs, sequence comparisons, and phylogenetic analysis collectively indicate the presence of a novel virus in the symptomatic <i>S. taccada</i> sample, tentatively named Scaevola yellow blotch virus (ScYBV). This virus belongs to a new species in the genus <i>Emaravirus</i> of family <i>Fimoviridae</i>, tentatively designated as <i>Emaravirus scaevolae</i>. This marks the first report of an emaravirus infecting <i>S. taccada</i> plants. Bioassays showed that ScYBV is not mechanically transmissible to <i>Nicotiana benthamiana</i> plants. Molecular screening of leaves from 52 symptomatic and 20 asymptomatic individual <i>S. taccada</i> plants suggested a strong relationship between yellow blotch and the presence of ScYBV. These findings provide a basis for effective control of YBD and contribute to a greater understanding of the genetic diversity of emaraviruses.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"173 4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606612","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}
引用次数: 0
First Report of Leaf Spot Caused by Fusarium proliferatum on Clivia miniata (Bush Lily) in China 中国小花兰(Clivia miniata)增生镰刀菌叶斑病报告初报
IF 1.1 4区 农林科学
Journal of Phytopathology Pub Date : 2025-07-10 DOI: 10.1111/jph.70108
Jiajia Li, Jialin Song, Zhaoyu Li, Yongqiang Tian, Xu Su, Zhepeng Deng
{"title":"First Report of Leaf Spot Caused by Fusarium proliferatum on Clivia miniata (Bush Lily) in China","authors":"Jiajia Li,&nbsp;Jialin Song,&nbsp;Zhaoyu Li,&nbsp;Yongqiang Tian,&nbsp;Xu Su,&nbsp;Zhepeng Deng","doi":"10.1111/jph.70108","DOIUrl":"https://doi.org/10.1111/jph.70108","url":null,"abstract":"<div>\u0000 \u0000 <p>In March 2024, a leaf spot disease of <i>Clivia miniata</i> was observed in the greenhouse of Lanzhou Jiaotong University in Lanzhou, Gansu Province, China. The symptoms initially consisted of small brown spots, which then developed into larger, round to irregular patches with a dark brown centre and chlorotic halo. Based on morphological characteristics and molecular identification using internal transcribed spacer (ITS), translation elongation factor 1α (EF-1α), RNA polymerase II second largest subunit (RPB2), and β-tubulin (TUB2) regions, the causal fungus was identified as <i>Fusarium proliferatum</i>. Koch's postulates were confirmed by injecting asymptomatic leaves with a conidial suspension of the fungus. <i>F. proliferatum</i> has been reported previously to cause sheath rot and bulb rot on <i>C. miniata</i> in China, but to our knowledge, this is the first report of this fungus causing leaf spot symptoms on this host.</p>\u0000 </div>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"173 4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598555","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}
引用次数: 0
Influence of Ginsenosides on the Pathogenicity of Ilyonectria spp. 人参皂苷对大肠杆菌致病性的影响。
IF 1.1 4区 农林科学
Journal of Phytopathology Pub Date : 2025-07-10 DOI: 10.1111/jph.70129
Anka Colo, Mark A. Bernards
{"title":"Influence of Ginsenosides on the Pathogenicity of Ilyonectria spp.","authors":"Anka Colo,&nbsp;Mark A. Bernards","doi":"10.1111/jph.70129","DOIUrl":"https://doi.org/10.1111/jph.70129","url":null,"abstract":"<p>Commercial cultivation of American ginseng (<i>Panax quinquefolius</i> L.) suffers from ginseng replant disease (GRD) when planted in a former ginseng garden. GRD typically manifests as a severe root rot due to the fungus <i>Ilyonectria mors-panacis</i> (A.A. Hildebr.) A. Cabral &amp; Crous. Ginsenosides released to the soil by ginseng are thought to contribute to GRD mainly through the alteration of soil microbial communities. However, ginsenosides do not persist in ginseng garden soil post-harvest, suggesting that they are not direct contributors during GRD. Instead, ginsenosides can alter the virulence of <i>Ilyonectria</i> spp., specifically <i>I. rufa</i> A. Cabral &amp; Crous, toward ginseng roots when pre-exposed to ginsenosides in vitro. Although <i>I. rufa</i> infection has not been previously implicated in GRD, a similar mechanism may occur in <i>I. mors-panacis</i>, thereby suggesting that ginsenosides may contribute to establishing the GRD state. Additionally, while various <i>Ilyonectria</i> isolates were able to metabolise select ginsenosides, this did not correlate with virulence.</p>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":"173 4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jph.70129","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598554","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}
引用次数: 0
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