Plant Pathology Journal最新文献

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Volatile Organic Compounds from Pseudomonas koreensis KF32 and P. fitomaticsae KF45 Suppress Ralstonia pseudosolanacearum and Reduce Bacterial Wilt in Tomato. 韩国假单胞菌KF32和番茄假单胞菌KF45挥发性有机化合物对番茄青枯病的抑制作用
IF 2.5 3区 农林科学
Plant Pathology Journal Pub Date : 2025-10-01 DOI: 10.5423/PPJ.OA.07.2025.0088
Mi Jin Jeon, Mee Kyung Sang
{"title":"Volatile Organic Compounds from Pseudomonas koreensis KF32 and P. fitomaticsae KF45 Suppress Ralstonia pseudosolanacearum and Reduce Bacterial Wilt in Tomato.","authors":"Mi Jin Jeon, Mee Kyung Sang","doi":"10.5423/PPJ.OA.07.2025.0088","DOIUrl":"https://doi.org/10.5423/PPJ.OA.07.2025.0088","url":null,"abstract":"<p><p>Bacterial wilt caused by Ralstonia pseudosolanacearum is a destructive disease with a broad host range and global impact. To explore eco-friendly biocontrol strategies for bacterial wilt, we screened Pseudomonas strains that produce volatile organic compounds (VOCs) with antibacterial activity against R. pseudosolanacearum and potential biocontrol effects on tomato bacterial wilt. We evaluated antibacterial activity of VOCs produced by bacterial strains using on I-plate, and conducted plant assays against of bacterial wilt tomato plant. Two strains, KF32 and KF45, were identified as Pseudomonas koreensis, and P. fitomaticsae, respectively. Their VOCs significantly inhibited R. pseudosolanacearum growth in vitro and reduced disease incidence in tomato plants. Transcriptomic analysis was performed on R. pseudosolanacearum exposed to VOCs from strains KF32 and KF45. RNA sequencing revealed that VOCs from KF32 and KF45 downregulated genes related to cell motility and xenobiotic degradation of the pathogen. We analyzed VOCs produced by strains KF32 and KF45 using gas chromatography-mass spectrometry. Among the identified VOCs, 2-decanone which was produced by strain KF32 significantly inhibited the growth of R. pseudosolanacearum and reduced tomato bacterial wilt symptoms. This study highlights the potential of VOC-producing Pseudomonas strains KF32 and KF45 as biocontrol agents and contributing to the development of long-term strategies for managing bacterial wilt in tomato. Furthermore, understanding VOC-mediated interactions provides valuable insights for developing improved strategies to manage plant pathogenic bacteria.</p>","PeriodicalId":20173,"journal":{"name":"Plant Pathology Journal","volume":"41 5","pages":"628-642"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Dimethyl Sulfoxide Suppresses Fusarium graminearum Pathogenicity by Modulating Key Life Cycle Traits. 二甲亚砜通过调节关键生命周期性状抑制禾谷镰刀菌致病性。
IF 2.5 3区 农林科学
Plant Pathology Journal Pub Date : 2025-10-01 DOI: 10.5423/PPJ.OA.06.2025.0074
Taiying Li, Seunghyun Lee, Taewon Choi, Yurim Lim, Tianling Ma, Jungkwan Lee
{"title":"Dimethyl Sulfoxide Suppresses Fusarium graminearum Pathogenicity by Modulating Key Life Cycle Traits.","authors":"Taiying Li, Seunghyun Lee, Taewon Choi, Yurim Lim, Tianling Ma, Jungkwan Lee","doi":"10.5423/PPJ.OA.06.2025.0074","DOIUrl":"https://doi.org/10.5423/PPJ.OA.06.2025.0074","url":null,"abstract":"<p><p>Dimethyl sulfoxide (DMSO) is widely recognized for its versatile solvent properties, and for its role as a cryoprotectant in the preservation of cell and microorganism. Despite its extensive use across various fields, its impact on plant pathogens has received comparatively less attention in existing literature. This study focuses on investigating the effects of DMSO on Fusarium graminearum, a fungal pathogen that affects grains, through both bioinformatic and biological experiments. Our findings demonstrate that, although DMSO induces mycotoxin production in F. graminearum in vitro, it significantly reduces production and maturation of perithecia and pigmentation. Additionally, DMSO supplementation inhibits mycelial growth and conidial germination, potentially contributing to reduced pathogenicity on wheat coleoptiles. These results highlight DMSO's potential influence on plant pathogenic fungi beyond F. graminearum and may provide valuable insights for future research.</p>","PeriodicalId":20173,"journal":{"name":"Plant Pathology Journal","volume":"41 5","pages":"595-606"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Application of Nanocomposites-Based Polymers on Managing Fungal Diseases in Crop Production. 纳米复合材料聚合物在作物真菌病害防治中的应用
IF 2.5 3区 农林科学
Plant Pathology Journal Pub Date : 2025-08-01 DOI: 10.5423/PPJ.RW.02.2025.0029
Nguyen Huy Hoang, Toan Le Thanh, Chanon Saengchan, Rungthip Sangpueak, Wannaporn Thepbandit, Xiaolu Zhou, Anyanee Kamkaew, Kumrai Buensanteai
{"title":"Application of Nanocomposites-Based Polymers on Managing Fungal Diseases in Crop Production.","authors":"Nguyen Huy Hoang, Toan Le Thanh, Chanon Saengchan, Rungthip Sangpueak, Wannaporn Thepbandit, Xiaolu Zhou, Anyanee Kamkaew, Kumrai Buensanteai","doi":"10.5423/PPJ.RW.02.2025.0029","DOIUrl":"10.5423/PPJ.RW.02.2025.0029","url":null,"abstract":"<p><p>Phytopathogen caused loss of global crop production of 16% and up to 25% in developing countries. Among them, fungi accounted for the highest ratio value with 42%, which direct reduced crop yield and quality. Nanotechnology can be applied to crop protection to build sustainable agricultural production. Polymers (gum, mucilage, chitosan) are naturally derived, readily available, inexpensive, convertible, and biodegradable, which could be combined with nanotechnology to enhance their properties and benefit. In this review, ionic gelation is more popular than nanoprecipitation, emulsion, γ-rays irradiation, and chemical reduction methods in preparing nanocomposites-based polymers in the management of fungal diseases in crop production. The chitosan was often dominated among the polymers. Moreover, the chitosan can be applied as chitosan nanoparticles or combined with an active ingredient (saponin, copper, silver, zinc, titanium dioxide, ethanolic blueberry extract, methanol of nanche extract, Mentha longifolia extract, Cymbopogon martinii essential oil, Harpin, salicylic acid, Thiamine, hexaconazole, dazomet, hexaconazole-dazomet) to enhance their efficacy in managing plant fungal disease. The fungicide, mental, and plant extracts are often loaded into the chitosan matrix to enhance antifungal and/or physical barrier properties. While phytohormones, vitamins, and mental are often used to stimulate plant disease resistance. And chitosan can be used as an adjuvant in metal/oxide mixture. In recent years, other polymers including polyethylene glycol, nanoliposomes, and poly(L-lactide) have been shown remarkable capabilities including resisting water washing and acting as a membrane filter with antifungal properties. These results show that the nanocomposites based-polymer has the ability to effectively manage plant diseases.</p>","PeriodicalId":20173,"journal":{"name":"Plant Pathology Journal","volume":"41 4","pages":"437-455"},"PeriodicalIF":2.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12332492/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Biological Control and Growth-Promoting Activities of Burkholderia vietnamiensis FBCC-B8049 Isolated from Freshwater. 淡水分离越南伯克氏菌FBCC-B8049的生物防治及促生长活性研究
IF 2.5 3区 农林科学
Plant Pathology Journal Pub Date : 2025-08-01 DOI: 10.5423/PPJ.OA.03.2025.0041
Gil Han, Wonsu Cheon, Yunjeong Heo, Chang Soo Lee
{"title":"Biological Control and Growth-Promoting Activities of Burkholderia vietnamiensis FBCC-B8049 Isolated from Freshwater.","authors":"Gil Han, Wonsu Cheon, Yunjeong Heo, Chang Soo Lee","doi":"10.5423/PPJ.OA.03.2025.0041","DOIUrl":"10.5423/PPJ.OA.03.2025.0041","url":null,"abstract":"<p><p>Colletotrichum and Fusarium are globally important plant-pathogenic fungi that cause serious diseases in chili pepper and other crops, leading to substantial yield losses due to their broad host range, environmental persistence, and the limited effectiveness of chemical control, thereby highlighting the need for sustainable alternatives such as biological control. We investigate the biological control and plant growth-promoting potential of Burkholderia vietnamiensis FBCC-B8049, isolated from freshwater environments. The strain exhibited significant antifungal activity against Colletotrichum gloeosporioides, Colletotrichum acutatum, and Fusarium oxysporum in dual-culture assays, with stronger effects against Colletotrichum species. The inhibition was likely due to direct antagonism and volatile organic compounds (VOCs) produced by FBCC-B8049, which were particularly effective against Colletotrichum species. Additionally, FBCC-B8049 demonstrated plant growth-promoting activities including siderophore production for iron acqusition, phosphate solubilization for enhanced nutrient availability, and indole-3-acetic acid synthesis to promote root development. These combined activities enhance nutrient availability and promote seed germination and seedling growth in chili pepper. Ex vivo assays further revealed the effectiveness of FBCC-B8049 in suppressing anthracnose disease on pepper fruits through both direct application and bacterial VOCs emission. Phylogenetic analysis of 16S rRNA and recA gene sequences positioned FBCC-B8049 closely to Burkholderia vietnamiensis, a known plant growth-promoting rhizobacterium. These findings highlight FBCC-B8049 as a promising candidate for sustainable agricultural applications.</p>","PeriodicalId":20173,"journal":{"name":"Plant Pathology Journal","volume":"41 4","pages":"484-497"},"PeriodicalIF":2.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12332408/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Ten-Year Comparison of Fungicide Sensitivity and Mycotoxin Production of Fusarium Head Blight Isolates from Korea. 韩国赤霉病分离株杀菌剂敏感性及产毒量的10年比较。
IF 2.5 3区 农林科学
Plant Pathology Journal Pub Date : 2025-08-01 DOI: 10.5423/PPJ.OA.05.2025.0068
Parthiban Subramanian, Jung-Hye Choi, So-Soo Kim, Bo-Eun Kim, Ja-Yeong Jang, Ji-Seon Baek, Theresa Lee
{"title":"Ten-Year Comparison of Fungicide Sensitivity and Mycotoxin Production of Fusarium Head Blight Isolates from Korea.","authors":"Parthiban Subramanian, Jung-Hye Choi, So-Soo Kim, Bo-Eun Kim, Ja-Yeong Jang, Ji-Seon Baek, Theresa Lee","doi":"10.5423/PPJ.OA.05.2025.0068","DOIUrl":"10.5423/PPJ.OA.05.2025.0068","url":null,"abstract":"<p><p>Fusarium head blight (FHB) is an important disease reducing yield and quality of wheat and barley. To study changes in fungicide efficacy over time, 161 FHB isolates (F. asiaticum and F. graminearum) were obtained from infected wheat and barley in the Jeolla provinces of the Republic of Korea from 2010-2013 and 2020-2023. Over 10 years, FHB fungi developed resistance to demethylation inhibitors (DMIs), methyl benzimidazole carbamates (MBCs), and phthalimides, with few exceptions. Also, no significant resistance against succinate dehydrogenase inhibitors (SDHI) and quinoneoutside inhibitors (QoI) was observed, but sensitivity to phenylpyrrole (PP) increased. Mycotoxin production by four representative isolates of both species indicated that higher doses of DMI, DMI + DMI, MBC, MBC + DMI, and PP controlled trichothecenes, whereas zearalenone was controlled only by SDHI. QoI, QoI + DMI, and phthalimide did not control mycotoxin production in either species. Despite resistance development, DMI, MBC, and PP can still be used to control FHB and mycotoxins in wheat and barley in Korea with close monitoring of resistance.</p>","PeriodicalId":20173,"journal":{"name":"Plant Pathology Journal","volume":"41 4","pages":"518-531"},"PeriodicalIF":2.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12332407/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Composition, Diversity, and Functional Roles of the Rhizosphere Microbiome in Panax ginseng. 人参根际微生物群的组成、多样性及其功能作用。
IF 2.5 3区 农林科学
Plant Pathology Journal Pub Date : 2025-08-01 DOI: 10.5423/PPJ.RW.02.2025.0027
Tae Kyung Hyun
{"title":"Composition, Diversity, and Functional Roles of the Rhizosphere Microbiome in Panax ginseng.","authors":"Tae Kyung Hyun","doi":"10.5423/PPJ.RW.02.2025.0027","DOIUrl":"10.5423/PPJ.RW.02.2025.0027","url":null,"abstract":"<p><p>The rhizosphere microbiome of Panax ginseng plays a crucial role in promoting plant growth, enhancing stress resilience, and facilitating the biosynthesis of pharmacologically significant ginsenosides. However, continuous monocropping disrupts the microbial community balance, leading to soil degradation, the proliferation of soilborne pathogens, and decreased crop productivity. Advanced multi-omics technologies, such as metagenomics and metabolomics, have provided valuable insights into the structure and function of the ginseng rhizosphere microbiome. These studies highlight its potential for nutrient mobilization, disease suppression, and stress mitigation. Root exudates, including phenolic acids and ginsenosides, influence microbial composition; however, they may also exacerbate soil imbalances by promoting pathogenic fungi. Conversely, beneficial microbes, such as phosphate-solubilizing bacteria and siderophore-producing strains, enhance nutrient availability, mitigate heavy metal toxicity, and suppress pathogens through bioactive metabolites. This review emphasizes the functional roles of the ginseng rhizosphere microbiome and highlights knowledge gaps in leveraging microbial interactions for sustainable cultivation. A more comprehensive understanding of plant-microbe interactions, coupled with the integration of microbiome-driven strategies, can enhance ginseng productivity, boost bioactive compound yields, and support environmentally sustainable agricultural practices. These findings provide a foundation for advancing microbiome research and addressing challenges in ginseng cultivation.</p>","PeriodicalId":20173,"journal":{"name":"Plant Pathology Journal","volume":"41 4","pages":"425-436"},"PeriodicalIF":2.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12332491/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Design and Validation of Specific qPCR Primers for Soil-Borne and Apple Tree-Associated Phytopathogenic Fungi. 土传和苹果树相关植物病原真菌特异性qPCR引物的设计与验证。
IF 2.5 3区 农林科学
Plant Pathology Journal Pub Date : 2025-08-01 DOI: 10.5423/PPJ.NT.05.2025.0062
Gudam Kwon, Kook-Hyung Kim
{"title":"Design and Validation of Specific qPCR Primers for Soil-Borne and Apple Tree-Associated Phytopathogenic Fungi.","authors":"Gudam Kwon, Kook-Hyung Kim","doi":"10.5423/PPJ.NT.05.2025.0062","DOIUrl":"10.5423/PPJ.NT.05.2025.0062","url":null,"abstract":"<p><p>Soil-borne pathogenic fungi cause substantial economic losses worldwide by infecting the underground parts of plants. In fruit trees, infections are especially damaging, as they often result in the death of the entire plant. Therefore, early detection is essential for effective disease management caused by soil-borne pathogens. In this study, we designed and validated real-time PCR primers targeting eight soil-borne and apple tree-associated phytopathogenic fungi. Each primer set successfully detected 20 ng of target genomic DNA (gDNA) within 25 cycles, while the same amount of non-target gDNA mixture was detected only after 35 cycles of amplification. Moreover, target DNA amplification remained unaffected in the presence of mixed non-target gDNA background, confirming the high specificity of the primers. Sensitivity test showed that 1 fg of plasmid DNA, corresponding to about 290 copies, was detectable around 30 cycles with all primer sets. These primers support accurate pathogen detection and early diagnosis in various environmental samples.</p>","PeriodicalId":20173,"journal":{"name":"Plant Pathology Journal","volume":"41 4","pages":"532-538"},"PeriodicalIF":2.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12332406/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Elevated Temperature Can Reduce Cucumber Mosaic Virus Transmission in Tobacco Plants by Altering the Insect Vector's Performance. 高温可通过改变黄瓜花叶病毒在烟草中的传播媒介的特性来减少黄瓜花叶病毒在烟草中的传播。
IF 2.5 3区 农林科学
Plant Pathology Journal Pub Date : 2025-08-01 DOI: 10.5423/PPJ.OA.02.2025.0016
Dineesha N Balagalla, Wikum H Jayasinghe, Hao Gefei, W M Wishwajith W Kandegama, Jihyun Kim, Hangil Kim
{"title":"Elevated Temperature Can Reduce Cucumber Mosaic Virus Transmission in Tobacco Plants by Altering the Insect Vector's Performance.","authors":"Dineesha N Balagalla, Wikum H Jayasinghe, Hao Gefei, W M Wishwajith W Kandegama, Jihyun Kim, Hangil Kim","doi":"10.5423/PPJ.OA.02.2025.0016","DOIUrl":"10.5423/PPJ.OA.02.2025.0016","url":null,"abstract":"<p><p>Disease dynamics are significantly influenced by insect vectors through their interactions with viruses and host plants. The objective of this study is to understand how increased temperatures affect virus transmission, providing insights critical for developing climate-resilient pest and disease management strategies. We investigated the effects of temperature on the survival and growth of Myzus persicae (Sulzer) (Hemiptera: Aphididae), a key vector of the cucumber mosaic virus (CMV). Experiments were conducted to assess aphid survival, reproduction, and intrinsic rate of increase on healthy and CMV-infected Nicotiana tabacum plants at 25℃ and 30℃. It was observed that higher temperatures did not negatively affect aphid survival. CMV transmission assay was performed by allowing aphids to acquire and inoculate the virus under varied temperature combinations, while the aphid feeding behavior was monitored at different temperatures. The transmission efficiency was markedly reduced at 30℃ compared to 25℃, regardless of variations in temperature during virus acquisition and inoculation. Analysis of probing behavior revealed that aphids' probing behavior differed at 30℃, likely contributing to reduced transmission efficiency at higher temperatures. These findings demonstrate the intricate interplay between temperature, vector behavior, and virus transmission. Together, this study emphasizes the importance of incorporating environmental temperature dynamics into the development of sustainable and climate-resilient strategies for managing vector-borne diseases in agriculture.</p>","PeriodicalId":20173,"journal":{"name":"Plant Pathology Journal","volume":"41 4","pages":"498-506"},"PeriodicalIF":2.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12332405/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Functional Characterization of Polyketide Synthase Clusters in Streptomyces anandii J6. anandii链霉菌聚酮合成酶簇的功能表征
IF 2.5 3区 农林科学
Plant Pathology Journal Pub Date : 2025-08-01 DOI: 10.5423/PPJ.NT.04.2025.0059
Da-Ran Kim, Youn-Sig Kwak
{"title":"Functional Characterization of Polyketide Synthase Clusters in Streptomyces anandii J6.","authors":"Da-Ran Kim, Youn-Sig Kwak","doi":"10.5423/PPJ.NT.04.2025.0059","DOIUrl":"10.5423/PPJ.NT.04.2025.0059","url":null,"abstract":"<p><p>Streptomyces species are well-known for their antifungal properties and the production of diverse secondary metabolites, including non-ribosomal peptides and polyketides. These metabolites can be identified through various genetic techniques, allowing for the investigation of gene functions using whole-genome databases. Numerous studies have explored the genetic functions of Streptomyces using advanced techniques, such as CRISPR-Cas9 mutagenesis, to generate site-specific mutant strains. In this study, we re-identified Streptomyces sp. J6 as Streptomyces anandii J6 through whole-genome sequencing and average nucleotide identity (ANI) analysis. The type II and type III polyketide synthase clusters (PKS: clusters 9, 10, and 12) were further studied using CRISPR-Cas9 for functional analysis, revealing the role of srsA in the biosynthesis of alkylresorcinols, which are phenolic lipids with antifungal properties. These results indicate that metabolites belonging to the polyketide family produced by Streptomyces plays a significant role in the biocontrol activity of microorganisms against plant diseases. Furthermore, the findings suggest that specific PKS profiling enables the rapid and efficient screening of a large number of microbial candidates, thereby facilitating the selection of promising biocontrol agents.</p>","PeriodicalId":20173,"journal":{"name":"Plant Pathology Journal","volume":"41 4","pages":"539-544"},"PeriodicalIF":2.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12332411/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Isolation and Characterization of Plant Growth-Promoting Rhizobacteria from Mud Flats in South Korea: Potential for Lettuce Growth Promotion and Control of Sclerotinia Rot. 韩国泥滩植物促生根杆菌的分离与鉴定:促进生菜生长和防治菌核腐病的潜力。
IF 2.5 3区 农林科学
Plant Pathology Journal Pub Date : 2025-08-01 DOI: 10.5423/PPJ.OA.03.2025.0035
Jae-Uk Jee, Seog-Won Chang, Juhyun Ryu, Se-Chul Chun
{"title":"Isolation and Characterization of Plant Growth-Promoting Rhizobacteria from Mud Flats in South Korea: Potential for Lettuce Growth Promotion and Control of Sclerotinia Rot.","authors":"Jae-Uk Jee, Seog-Won Chang, Juhyun Ryu, Se-Chul Chun","doi":"10.5423/PPJ.OA.03.2025.0035","DOIUrl":"10.5423/PPJ.OA.03.2025.0035","url":null,"abstract":"<p><p>Various strategies have been developed to control lettuce diseases on farms and in food-packing plants. Biological control is considered a promising alternative owing to its eco-friendly nature. In the present study, bacteria isolated from coastal mudflats were evaluated for their efficacy in controlling Sclerotinia rot, and the plant growth-promoting activity in lettuce was also assessed. Among the screened microorganisms from the coastal mudflats, 12 bacterial strains exhibited antifungal activity against Sclerotinia sclerotiorum selected. These isolates have shown beneficial characteristics, such as nitrogen fixation, indole-3-acetic acid production, phosphate solubilization, and siderophore production. Additionally, the selected isolates showed antifungal effects on the pathogens of major plant disease, such as Alternaria porri, Colletotrichum acutatum, Fusarium oxysporum, Phytophthora capsici, Pythium ultimum, Rhizoctonia solani, and Stemphylium lycopersici. Among the selected bacterial strains, Bacillus subtilis GCM190 exhibited a high sclerotinia rot control rate, similar to that of the tebuconazole-treated group, and showed a significant effect in promoting the growth of lettuce leaves, stems, and roots (least significant difference, P = 0.05). The selection of rifampicin-resistant mutants and their tracing on lettuce roots and soil confirmed that they were well established in both the soil and lettuce roots. The selected microorganisms also exhibited antifungal effects in vitro against other crop diseases affecting cucumbers, tomatoes, red peppers, and green onions, suggesting high potential for practical applications.</p>","PeriodicalId":20173,"journal":{"name":"Plant Pathology Journal","volume":"41 4","pages":"456-471"},"PeriodicalIF":2.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12332413/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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