Australasian Plant Pathology最新文献

Genome characterization of the cantaloupe isolate of beet curly top Iran virus and interaction analysis with two betasatellites 甜菜卷顶伊朗病毒哈密瓜分离物的基因组特征及其与两个betasat卫星的互作分析

IF 1.1 4区农林科学

Australasian Plant Pathology Pub Date : 2026-05-07 DOI: 10.1007/s13313-026-01147-5

Maryam Esmaeili, Jahangir Heydarnejad

{"title":"Genome characterization of the cantaloupe isolate of beet curly top Iran virus and interaction analysis with two betasatellites","authors":"Maryam Esmaeili, Jahangir Heydarnejad","doi":"10.1007/s13313-026-01147-5","DOIUrl":"10.1007/s13313-026-01147-5","url":null,"abstract":"<div>Beet curly top Iran virus (BCTIV; Becurtovirus betae, family Geminiviridae) is widespread in crop-growing regions across Iran. In this study, BCTIV was detected in a severely infected cantaloupe (Cucumis melo L.) farms in Khorasan Razavi Province, northeastern Iran. The complete genome of a cantaloupe isolate of the virus shared 87.15–99.44% nucleotide identities with available sequences in GenBank, showing the highest identity (99.44%) with an isolate recovered from cowpea in the same Province. Phylogenetic analysis revealed a clear association between genetic clustering and geographic origin, with the cantaloupe isolate grouping with other northeastern Iranian isolates and one Turkish isolate. Given the widespread occurrence of the promiscuous betasatellites, tomato leaf curl betasatellite (ToLCB; Betasatellite solani) and okra leaf curl Oman betasatellite (OLCOMB; Betasatellite abelmoschusomanense) in Iran, we evaluated their potential interaction with BCTIV using agroinoculation assays. Sugar beet and cantaloupe plants were inoculated with infectious clones of BCTIV alone or in combination with ToLCB or OLCOMB. Co-inoculation did not result in enhanced symptom severity compared with BCTIV alone, and neither betasatellite was detected in inoculated plants by PCR. However, symptom onset in sugar beet inoculated with BCTIV + ToLCB occurred slightly earlier than in plants inoculated with BCTIV alone or with BCTIV + OLCOMB. These findings expand the known host range of BCTIV to include cantaloupe and indicate that, despite their broad host and helper virus associations, ToLCB and OLCOMB are not efficiently maintained by BCTIV. The results contribute to a better understanding of interactions between a becurtovirus and two betasatellites and their implications for disease development.</div>","PeriodicalId":8598,"journal":{"name":"Australasian Plant Pathology","volume":"55 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829096","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

Effect of biological soil disinfestation on ethanol-irrigated Shimajiri Mahji soil against bitter gourd diseases in Miyako Island, Okinawa, Japan 日本冲绳岛宫古岛岛尻町乙醇灌溉土壤生物除害对苦瓜病害的影响

IF 1.1 4区农林科学

Australasian Plant Pathology Pub Date : 2026-05-04 DOI: 10.1007/s13313-026-01151-9

Takashi Hanagasaki, Atsushi Ajitomi

{"title":"Effect of biological soil disinfestation on ethanol-irrigated Shimajiri Mahji soil against bitter gourd diseases in Miyako Island, Okinawa, Japan","authors":"Takashi Hanagasaki, Atsushi Ajitomi","doi":"10.1007/s13313-026-01151-9","DOIUrl":"10.1007/s13313-026-01151-9","url":null,"abstract":"<div>In Okinawa Main Island, the effect of biological soil disinfestation (BSD) using ethanol solution on Jahgaru soil was elucidated. In Miyako Island, a part of Okinawa Prefecture, farming land is covered with a dark-red neutral soil, which is known as Shimajiri Mahji soil. Bitter gourd (Momordica charantia L.), Goya, is a popular vegetable in Okinawa and is commonly cultivated on Shimajiri Mahji soil in Miyako Island. However, several diseases, such as Fusarium wilt by Fusarium cugenangense, bacterial wilt by Ralstonia solanacearum, and root-knot disease by plant-parasitic nematodes, often occur when Goya is cultivated. Weeds around cultivated Goya often prevent its growth and reduce yield production. In this study, the detailed conditions of BSD using ethanol solution, which are suitable to Shimajiri Mahji soil in Miyako Island, were investigated to elucidate the effect of BSD against bitter gourd diseases and weed germination. Results indicated that BSD with air leakage considerably weakens its effects against diseases and that BSD with a larger air space below the cover after application (a lower volume of ethanol solution) further weakens the effects. Moreover, ethanol with a concentration ranging from 0.5% to 2.0% (not 0.25%) should be used to achieve more positive effects against Fusarium cugenangense, Ralstonia solanacearum, and plant-parasitic nematodes. In addition, BSD-treated soil irrigated with 0.5% ECOLOGA ~ L® (corresponding to 0.5% ethanol solution) in the field sterilized these pathogens and plant-parasitic nematodes and completely prevented weed germination. In particular, soaking soil thoroughly with 0.5%–2.0% EtOH is necessary to sterilize Ralstonia solanacearum. In conclusion, BSD using ≥ 0.5% ECOLOGA ~ L® by soaking Shimajiri Mahji soil thoroughly had significant effects on soil-borne plant pathogens of bitter gourd, plant-parasitic nematodes, and weed germination in the field in Miyako Island.</div>","PeriodicalId":8598,"journal":{"name":"Australasian Plant Pathology","volume":"55 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829122","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 cherry virus A (Capillovirus alphavii) from sweet cherry (Prunus avium L.) in Türkiye 从甜樱桃（Prunus avium L.）中分离到的樱桃病毒A（甲冠病毒）在日本首次报道

IF 1.1 4区农林科学

Australasian Plant Pathology Pub Date : 2026-05-02 DOI: 10.1007/s13313-026-01101-5

Erge Irem Nursal, Bahar Tunc, Vahid Roumi, Kadriye Caglayan

引用次数: 0

The effect of synthetic fungicides and plant elicitors on wheat development, Fusarium infection, and deoxynivalenol biosynthesis and accumulation 合成杀菌剂和植物激发剂对小麦发育、镰刀菌感染和脱氧雪腐镰刀菌醇生物合成和积累的影响

IF 1.1 4区农林科学

Australasian Plant Pathology Pub Date : 2026-05-02 DOI: 10.1007/s13313-026-01137-7

João Américo Wordell Filho, Cristiano Nunes Nesi, Siumar Pedro Tironi, Francine Zaiosc Simmi, Adriano Nunes-Nesi, Rafael Dal Bosco Ducatti, Vanessa Fernandes Soares, Yasmim Branger Figueiredo

{"title":"The effect of synthetic fungicides and plant elicitors on wheat development, Fusarium infection, and deoxynivalenol biosynthesis and accumulation","authors":"João Américo Wordell Filho, Cristiano Nunes Nesi, Siumar Pedro Tironi, Francine Zaiosc Simmi, Adriano Nunes-Nesi, Rafael Dal Bosco Ducatti, Vanessa Fernandes Soares, Yasmim Branger Figueiredo","doi":"10.1007/s13313-026-01137-7","DOIUrl":"10.1007/s13313-026-01137-7","url":null,"abstract":"<div>Fusarium head blight (FHB), caused by the Fusarium graminearum species complex, is a devastating disease of wheat that significantly reduces yield and kernel quality due to the biosynthesis and accumulation of the mycotoxin deoxynivalenol (DON). This study investigated the effects of combinations of synthetic fungicides and plant elicitors (phosphites and seaweed extracts) on DON biosynthesis and accumulation in wheat kernels of the TBio Duque cultivar. The experiment was conducted in Chapecó, Santa Catarina, Brazil. Physiological variables, including photosynthetic and transpiration rates, were measured under different treatments. Yield components such as thousand kernel weight (TKW) and hectoliter weight (HW) were also evaluated. Disease progression was monitored weekly, and grains were analyzed for the presence of the Fusarium graminearum species complex and DON content. The CO₂ assimilation rate increased by up to 33.7% compared with the untreated control, while the application of elicitors alone after flowering increased TKW by 0.92%, HW by 0.62%, and FN by 2.79%. Although most treatments did not significantly reduce FHB severity, a 13.4% reduction in disease severity and a 6.71% decrease in DON content were observed in some fungicide–elicitor combinations. Significant correlations were found between DON levels and kernel quality variables. These findings highlight the importance of selecting appropriate combinations of fungicides and plant elicitors to maximize wheat yield and kernel quality, reduce F. graminearum incidence, and minimize DON biosynthesis and accumulation, providing a basis for improved integrated wheat disease management strategies.</div>","PeriodicalId":8598,"journal":{"name":"Australasian Plant Pathology","volume":"55 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796683","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 Colletotrichum theobromicola causing anthracnose on Japanese spindletree (Euonymus japonicus) in Türkiye 日本赤杨炭疽菌引起炭疽病的首次报道

IF 1.1 4区农林科学

Australasian Plant Pathology Pub Date : 2026-05-01 DOI: 10.1007/s13313-026-01149-3

Zühtü Polat, Mehmet Akif Gültekin, Tuğba Bozoğlu, Muharrem Türkkan, Sibel Derviş, Göksel Özer

引用次数: 0

First report of Fusarium compactum causing leaf spot on Photinia × fraseri ‘Red Robin’ (Fraser’s photinia) in Türkiye 红叶石楠‘红知更鸟’叶斑病病原菌压缩镰刀菌首次报道

IF 1.1 4区农林科学

Australasian Plant Pathology Pub Date : 2026-04-30 DOI: 10.1007/s13313-026-01148-4

İlhan Bal, Mehtap Alkan, Göksel Özer, Mehmet Erhan Göre

引用次数: 0

Molecular docking of phenolic compounds against 3-Phytase and G-Protein β Subunit FGB1 of Fusarium oxysporum f. sp. albedinis: insights into natural strategies to combat bayoud disease of date palm 酚类化合物对3-植酸酶和g -蛋白β亚基FGB1的分子对接：对枣树bayoud病自然防治策略的见解

IF 1.1 4区农林科学

Australasian Plant Pathology Pub Date : 2026-04-30 DOI: 10.1007/s13313-026-01146-6

Faiza Hamini, Soumaya Hachani, Ahmed Boufissiou, Mohamed Yousfi

{"title":"Molecular docking of phenolic compounds against 3-Phytase and G-Protein β Subunit FGB1 of Fusarium oxysporum f. sp. albedinis: insights into natural strategies to combat bayoud disease of date palm","authors":"Faiza Hamini, Soumaya Hachani, Ahmed Boufissiou, Mohamed Yousfi","doi":"10.1007/s13313-026-01146-6","DOIUrl":"10.1007/s13313-026-01146-6","url":null,"abstract":"<div>\u0000 \u0000 Fusarium oxysporum f. sp. albedinis, the causal agent of Bayoud disease, poses a serious threat to date palm (Phoenix dactylifera L.) cultivation. This study evaluated natural phenolic compounds from selected date palm cultivars as potential inhibitors of two proteins, 3-phytase and FGB1 (G-protein β subunit), and conducted a detailed analysis of their binding interactions. Seventeen phenolic compounds were retrieved from PubChem, energy-minimized, and docked onto AlphaFold-predicted structures of 3-phytase and FGB1 using AutoDock Vina v1.2.5. Binding affinities were ranked, and protein–ligand interactions were characterized with Discovery Studio Visualizer. Resveratrol exhibited the strongest affinity toward both proteins (− 7.12 kcal/mol with 3-phytase; − 7.30 kcal/mol with FGB1), forming multiple hydrogen bonds (SER389, ILE390, ARG191) and π–π stacking interactions that stabilized its binding within the active sites. Ferulic acid, p-coumaric acid, and sinapic acid also displayed favorable binding, mediated by hydrogen bonding and aromatic interactions. Comparative mapping highlighted target-specific preferences. Overall, the study supports the potential of phenolic metabolites as natural inhibitors against Bayoud disease, providing a foundation for developing environmentally sustainable control strategies for date palm cultivation.\u0000 </div>","PeriodicalId":8598,"journal":{"name":"Australasian Plant Pathology","volume":"55 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797201","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

The mitogenomes of Phytophthora meadii and P. palmivora: organization, evolution and phylogeny 媒介疫霉和棕榈疫霉的有丝分裂基因组：组织、进化和系统发育

IF 1.1 4区农林科学

Australasian Plant Pathology Pub Date : 2026-04-24 DOI: 10.1007/s13313-026-01129-7

Rajesh M.K., Prathibha V.H., Roli Budhwar, Praveen Kumar Oraon, Rohit Shukla, Thava Prakasa Pandian R., Jasmin Habeeb, Gangaraj K.P., Merin Babu, Nirmal Kumar B.J., Chaitra M., Muralikrishna K.S., Bobby Paul

{"title":"The mitogenomes of Phytophthora meadii and P. palmivora: organization, evolution and phylogeny","authors":"Rajesh M.K., Prathibha V.H., Roli Budhwar, Praveen Kumar Oraon, Rohit Shukla, Thava Prakasa Pandian R., Jasmin Habeeb, Gangaraj K.P., Merin Babu, Nirmal Kumar B.J., Chaitra M., Muralikrishna K.S., Bobby Paul","doi":"10.1007/s13313-026-01129-7","DOIUrl":"10.1007/s13313-026-01129-7","url":null,"abstract":"<div>\u0000 \u0000 Phytophthora meadii and P. palmivora are highly destructive plant pathogens, causing fruit and crown rot in arecanut and bud rot in coconut, respectively. In this study, we assembled and characterized the mitochondrial genomes of P. palmivora and P. meadii, analyzing their gene composition and structural organization. Additionally, we performed comparative analyses of mitochondrial genomes and investigated phylogenetic relationships among oomycete species. The complete mitochondrial genomes of P. palmivora (38,708 bp) and P. meadii (37,974 bp) were assembled, with coding regions accounting for approximately 74% and 72% of the total genome in P. palmivora and P. meadii, respectively, with G + C contents of 21.88% and 21.45%. Intergenic regions comprised approximately 11.3% of the P. palmivora mitogenome and 10.2% of the P. meadii mitogenome. While P. palmivora was predicted to encode 39 protein-coding genes (PCGs), P. meadii contained 37 PCGs. Both mitogenomes included two ribosomal RNA genes (rns and rnl) and 25 transfer RNA (tRNA) genes. Nucleotide composition analysis revealed a bias toward A/T over G/C. Phylogenomic analysis based on 34 protein-coding genes placed P. palmivora and P. meadii within the same clade, further supporting their close evolutionary relationship.\u0000 </div>","PeriodicalId":8598,"journal":{"name":"Australasian Plant Pathology","volume":"55 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738383","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

The resistance of lemon myrtle (Backhousia citriodora) to myrtle rust (Austropuccinia psidii) 柠檬桃金娘对桃金娘锈病的抗性研究

IF 1.1 4区农林科学

Australasian Plant Pathology Pub Date : 2026-04-14 DOI: 10.1007/s13313-026-01145-7

Emily Kathryn Lancaster, Geoffrey Samuel Pegg, R. Andrew Hayes, André Drenth, David John Lee

{"title":"The resistance of lemon myrtle (Backhousia citriodora) to myrtle rust (Austropuccinia psidii)","authors":"Emily Kathryn Lancaster, Geoffrey Samuel Pegg, R. Andrew Hayes, André Drenth, David John Lee","doi":"10.1007/s13313-026-01145-7","DOIUrl":"10.1007/s13313-026-01145-7","url":null,"abstract":"<div>\u0000 \u0000 Lemon myrtle (Backhousia citriodora, F. Muell.) is a native Australian myrtaceous species, highly valued for its unique, citral-rich essential oil. The development and success of this Australian industry has been in jeopardy since the detection of myrtle rust (Austropuccinia psidii) in Australia (April 2010). Since the initial invasion, it has spread across the major lemon myrtle growing regions in New South Wales and Queensland. The main commercial clones are highly susceptible to infection, with plantations experiencing up to 70% production losses. To identify resistance to A. psidii for industry use, disease assessments were conducted on germplasm originating from 13 Queensland provenances, established in two clonal field trials. Newly collected germplasm from the Ubobo provenance was also screened under controlled conditions. Infection caused symptoms ranging from small, restricted sori on a low percentage of leaves, to infection on up to 100% of leaves, with distorted shoots and severe dieback on infected stems. No fully resistant germplasm was identified, but significant differences in observed disease offer opportunities to select more resistant clones than those currently relied on by the industry. Germplasm from Eumundi, Noosa and Woondum (southern Queensland), and Silver Valley (northern Queensland), showed superior resistance to A. psidii across assessments and trial sites. Substantial variation in plant growth traits of importance to commercial production (e.g. canopy structure and foliage density) was observed among the provenances, families, and clones evaluated across the trials, suggesting the need to consider plant growth, biomass yield and essential oil properties when selecting industry-suitable germplasm. Implementing a breeding or hybridisation program should be a priority for the industry.\u0000 </div>","PeriodicalId":8598,"journal":{"name":"Australasian Plant Pathology","volume":"55 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13313-026-01145-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147737332","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

First report of Nigrospora lacticolonia as the agent causing brown leaf blight disease on Nelumbo nucifera in Hue, Vietnam 越南顺化地区乳色黑孢子虫引起褐叶枯病的首次报道

IF 1.1 4区农林科学

Australasian Plant Pathology Pub Date : 2026-04-14 DOI: 10.1007/s13313-026-01143-9

Nguyen Quang Hoang Vu, Hoang Thị Kim Hong, Pham Thi Diem Thi, Tran Thuy Lan, Tran Thi Ngoc Tram, Hoang Tan Quang

{"title":"First report of Nigrospora lacticolonia as the agent causing brown leaf blight disease on Nelumbo nucifera in Hue, Vietnam","authors":"Nguyen Quang Hoang Vu, Hoang Thị Kim Hong, Pham Thi Diem Thi, Tran Thuy Lan, Tran Thi Ngoc Tram, Hoang Tan Quang","doi":"10.1007/s13313-026-01143-9","DOIUrl":"10.1007/s13313-026-01143-9","url":null,"abstract":"<div>\u0000 \u0000 Nelumbo nucifera, commonly known as the sacred lotus, has significant cultural, medicinal, and nutritional value as an aquatic plant in Vietnam. From 2022 to 2023, lotus plants in Hue City, Vietnam, exhibited symptoms of brown leaf blight. Initially, irregular light brown spots appeared on the leaves, which gradually expanded until the entire leaf turned dark brown and wilted. Based on morphological characteristics and DNA sequence data of three loci, the internal transcribed spacer (ITS), beta-tubulin (TUB2), and translation elongation factor 1-alpha (TEF1-α), supported by phylogenetic analysis, the pathogen was identified as Nigrospora lacticolonia. BLASTn analyses revealed 99.5–100% sequence similarity with N. lacticolonia accessions in GenBank. Multigene phylogenetic analysis based on a concatenated dataset of the three loci (ITS, TUB2, and TEF1-α) further clustered the isolates with N. lacticolonia, providing robust molecular support for this identification. Pathogenicity tests on whole plants grown under controlled conditions verified that the fungus was the causal agent of the disease, fulfilling Koch’s postulates. The disease incidence was approximately 91.67% (11/12) after 15 days post-inoculation, with an average lesion diameter of 121.27 ± 34.19 mm and an average lesion length to leaf length ratio of 75.40%. To our knowledge, this is the first report of brown leaf blight caused by N. lacticolonia on N. nucifera in Vietnam and worldwide. These findings provide new insights into fungal pathogens affecting lotus and highlight the importance of developing effective disease management strategies to mitigate the economic impact of this disease on lotus cultivation.\u0000 </div>","PeriodicalId":8598,"journal":{"name":"Australasian Plant Pathology","volume":"55 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147737329","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