-
Development of molecular markers to identify distinct populations of Plasmodiophora brassicae Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-14 Michael D. Holtz, Sheau-Fang Hwang, Victor P. Manolii, Ileana S. Strelkov, Stephen E. Strelkov
Clubroot, caused by Plasmodiophora brassicae, has become a serious production problem for canola (Brassica napus) on the Canadian prairies. Recently, clubroot-resistant (CR) canola cultivars have begun to show susceptibility to particular strains of P. brassicae. Using next generation sequencing data, a search was undertaken to identify genomic insertions unique to Canadian P. brassicae isolates belonging
-
Triticum varieties grown as ‘ancient grains’ in New York differ in susceptibility to Fusarium head blight and harbor diverse Fusarium flora Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-14 Michael R. Fulcher, James B. Winans, David Benscher, Mark E. Sorrells, Gary C. Bergstrom
Fusarium head blight (FHB) of Triticum spp. is caused by diverse, mycotoxigenic members of the genus Fusarium. In New York, United States, Fusarium graminearum is considered the primary FHB incitant on common wheat (Triticum aestivum), but there is no record of the Fusarium spp. colonizing wheat crops marketed as high value ‘ancient grains’ (T. dicoccum, T. spelta, and T. monococcum). The incidence
-
Wheat seed germination and kernel weight affected by blast depend on the cultivar resistance and spikes age Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-14 Ernesto Ticiano Silva, Jonas Alberto Rios, Dwillian Firmiano Cunha, Marcela Uli Peixoto Araújo, Ueder Pedro Lopes, Fabrício Ávila Rodrigues
Blast, caused by Pyricularia oryzae, on wheat can negatively impact yield. This study investigated the effect of blast on seed germination and kernel weight of seeds obtained from the infected spikes of plants from the wheat cultivars BR-18 (moderately resistant) and BRS-Guamirim (susceptible). Spikes of each plant were inoculated at anthesis (0) as well as at 7, 14, and 21 days after anthesis (daa)
-
Preharvest application of salicylic acid induces some resistant genes of sweet pepper against black mold disease Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-13 Fayz A. Abdel-Rahman, Eman Y. Khafagi, Maali S. Soliman, Tahsin Shoala, Yosra Ahmed
Pepper fruits are subjected to various postharvest diseases such as black mold caused by Alternaria alternata. The efficacy of exogenous applications of salicylic acid (SA) in bulk and nanoscale forms to control the black mold was studied. In vitro studies revealed that both SA bulk materials and SA nanoparticles (SANPs) at 1.4 mM significantly suppressed the growth of A. alternata, yet SANPs showed
-
Incidence of cymbidium mosaic, odontoglossum ringspot, and orchid fleck virus in orchids in Minnesota and production of antibodies for use in ELISA to detect orchid fleck virus Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-13 Sara A. Bratsch, Neil Olszewski, Benham Lockhart
Ninety-six symptomatic orchids representing 36 genera from seven orchid collections, including two conservatories, in Minnesota, USA were tested for cymbidium mosaic virus (CymMV), odontoglossum ringspot virus (ORSV), and orchid fleck virus (OFV) using dipsticks (CymMV and ORSV), RT-PCR (OFV), and transmission electron microscopy (all viruses). CymMV was identified in 22% of the samples, OFV was identified
-
Genetic diversity of Australian Fusarium pseudograminearum populations causing crown rot in wheat Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-11 Mohammed Khudhair, F. Obanor, K. Kazan, D. M. Gardiner, E. Aitken, A. McKay, D. Giblot-Ducray, S. Simpfendorfer, L. F. Thatcher
Fusarium crown rot (FCR) caused by the fungus Fusarium pseudograminearum (Fp) is an important disease of wheat that reduces yield and grain quality in many countries, including Australia. In this study, we investigated mating type idiomorph composition, putative chemotype and population genotypic structure of 98 Fp isolates from Western Australia (WA) and the eastern Australian states of New South
-
pH modulation of the environment by Stagonosporopsis cucurbitacearum , an important pathogen causing fruit rot in Cucurbitaceae Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-11 S. Van Laethem, M. Frans, R. Aerts, J. Ceusters
The Cucurbitaceae is a genetically diverse group of plants containing several important commodity crops in many parts of the world such as cucumber, pumpkin and melon. In the last decades, fruit rot caused by Stagonosporopsis spp. became a major disease in both field grown and greenhouse grown cucurbits. Yield losses due to Stagonosporopsis can show seasonal peaks up to 30%. Despite its economic importance
-
Short and long term efficacy and prevalence of Cryphonectria parasitica hypovirulent strains released as biocontrol agents of chestnut blight Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-11 Valentim Coelho, Luís Nunes, Eugénia Gouveia
Chestnut blight, Cryphonectria parasitica (Murrill) Barr, was reported in Portugal in 1989. The disease rapidly spread within the chestnut region of the Trás-os-Montes (the Northeast of Portugal). Eradication and mechanical/burning exclusion failed to control the disease and natural hypovirulence is still absent or of very low incidence. The introduction of human-assisted therapeutic hypovirulence
-
Characterization of leaf rust progress in wheat cultivars with different resistance levels and sowing dates Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-11 Bita Naseri, Farzad Jalilian
A better understanding of leaf rust progress curves is highly desired by wheat breeders and pathologists to achieve more precise and ambitious predictors of disease development. High variations in leaf rust progress across different wheat cropping systems can cause difficulties and uncertainties for study of disease increase rate. A number of standard curves were fitted to a four-season data set on
-
Biofumigation with Brassica seed-based products combined with calcium carbonate to control Phytophthora cinnamomi root rot in cork and holm oaks Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-08 María Carmen Rodríguez-Molina, Pilar Fernández-Rebollo, Paula Serrano-Pérez, Ana De Santiago, María Teresa Hidalgo-Fernández, Francisco J. Campos-Navarro
The root rot of holm and cork oaks caused by Phytophthora cinnamomi is one of the main phytosanitary problems in dehesas and montados, open woodlands of the Southern Iberian Peninsula. Biofumigation with seed meals rich in sinigrin is a promising technique to diminish the impact of this disease, but verification of its effectiveness is necessary before applying it in the field. The effectiveness to
-
Occurrence of fungal diseases in faba bean ( Vicia faba L.) under salt and drought stress Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-08 Imen Haddoudi, Haythem Mhadhbi, Mahmoud Gargouri, Fethi Barhoumi, Samir Ben Romdhane, Moncef Mrabet
The present work was initiated in order to test whether the growth and pathogenic behavior of fungal isolates infecting Faba bean (FB) are influenced by salt and drought stress. A collection of 108 fungal isolates was recovered from different infected FB plants grown in various bioclimatic zones in Tunisia. Koch’s postulates revealed that 54% of those isolates caused root rots infection by 25% to 100%
-
Survival and viability of ascospores of Erysiphe necator in Austrian vineyards Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-07 M. Redl, S. Möth, E. Koschier, B. Spangl, S. Steinkellner
Grape powdery mildew caused by Erysiphe necator is a limiting factor in grape production. In order to develop effective management strategies, the factors influencing the survival of the fungus need to be identified and characterized accordingly. For this purpose, we focused on the effect of weather conditions during overwintering on the survival and viability of ascospores. In spring 2017 and 2018
-
Lachancea thermotolerans acts as a resistance inducer in soybean infected with Meloidogyne incognita Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-07 T. M. Mioranza, A. Miamoto, A. P. Mattos, B. B. Rissato, C. R. Dias-Arieira, K. R. F. Schwan-Estrada
The worldwide interest in sustainable agriculture has contributed to the development of alternative methods for the control of plant pests and diseases. This study aimed to assess the efficiency of Lachancea thermotolerans CCMA 0763 and its metabolites in controlling Meloidogyne incognita in soybean and their effects on plant defense enzymes and glyceollin synthesis. The following treatments were applied
-
Preharvest high-intensity, pulsed polychromatic light and low-intensity UV-C treatments control Botrytis cinerea on lettuce ( Lactuca sativa ) Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-07 G. Scott, M. Dickinson, G. Shama
Hormetic treatments using high-intensity, pulsed polychromatic light (HIPPL) and low-intensity UV-C (LIUV) can control Botrytis cinerea on lettuce (Lactuca sativa) in a controlled environment. For the cv. Temira, 48 pulses of HIPPL significantly reduced mean disease progression (26%), while 0.64 kJ/m2 of LIUV gave reductions of 27%. No LIUV or HIPPL treatment significantly reduced disease progression
-
Effect of crop rotation on common bean cultivars against bacterial wilt caused by Curtobacterium flaccumfaciens pv. flaccumfaciens Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-07 Ricardo Marcelo Gonçalves, Tadeu Antônio Fernandes da Silva Júnior, José Marcelo Soman, João César da Silva, Antonio Carlos Maringoni
A crop rotation system can reduce phytopathogen inoculum, and consequently reduce the incidence and severity of disease. Bean bacterial wilt is an important disease and several crops can act as inoculum sources for Curtobacterium flaccumfaciens pv. flaccumfaciens (Cff). The aim was to evaluate the influence of crop rotation systems on 10 common bean cultivars against bacterial wilt. Experiments were
-
Effects of seed treatment with mustard meal in control of Fusarium culmorum Sacc. and the growth of common wheat ( Triticum aestivum ssp. vulgare ) Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-07 Jolanta Kowalska, Józef Tyburski, Joanna Krzymińska, Magdalena Jakubowska
This study investigated the bio-control activity of organic mustard meal as a seed dressing against Fusarium culmorum Sacc., the methods of its application on seed germination and germination capacity, and the parameters of plant development of wheat under in vitro, greenhouse and field conditions. White mustard meal applied as a wet dressing at a dose of 15 and 30 g per kg of seed, as well as dry
-
Practical considerations in the application of a polypyridyl complex of Ru(II) in physiological and biochemical studies of Pectobacterium spp. and other bacteria Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-06 Joanna Jońca, Aneta Stachowska, Agnieszka Chylewska, Katarzyna Turecka, Krzysztof Waleron, Malgorzata Waleron
Assessment of bacterial growth is an essential tool in many fields of study. Numerous methods are available for that purpose, but they are not without disadvantages. The present study aimed to investigate the application of a water soluble oxygen sensor [Ru(dpp(SO3Na)2)3]Cl2x6H2O (RuBPS) in physiological and biochemical studies of Pectobacterium spp. and other bacteria in 96-well microplate systems
-
Genetic diversity of ‘ Candidatus Liberibacter africanus’ in South Africa based on microsatellite markers Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-06 Ronel Roberts, Hong Lin, Gerhard Pietersen
Citrus Greening disease (CG) in South Africa (SA) is associated with the fastidious bacterium ‘Candidatus Liberibacter africanus’ (Laf). It has been observed that Laf isolates obtained from different geographic localities in SA differed in the rate of transmission during grafting experiments leading to the hypothesis that genetic variation of Laf may exist in this country. To determine this, 167 Laf
-
Fusarium oxysporum is the pathogen responsible for stem rot of the succulent plant Echeveria ‘Perle von Nürnberg’ and observation of the infection process Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-06 Jinai Yao, Peng Huang, Hanxin Chen, Deyi Yu
Echeveria ‘Perle von Nürnberg’ is a popular ornamental potted plant. In 2017–2018, stem rot lesions caused by Fusarium spp. were repeatedly observed on Echeveria ‘Perle von Nürnberg’ in Zhangzhou, Fujian Province, China. In this study, samples were collected to isolate the pathogen. After morphological observations, molecular identification, and pathogenicity measurements, the pathogen was confirmed
-
Evaluation of tomato, eggplant and pepper accessions for resistance to Ralstonia solanacearum species complex (RSSC) strains from Louisiana Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-06 Melanie L. Lewis Ivey, Alejandra M. Jimenez Madrid, Marie-Christine Daunay, Denis A. Shah
Bacterial wilt (BW), caused by Ralstonia solanacearum species complex (RSSC), is a major disease affecting tomato and other solanaceous crops produced in Louisiana and worldwide. The most effective and economic management strategy for BW is the use of crop genetic resistance. However, regional genetic variation among RSSC strains has made stable and durable resistance elusive. A collection of tomato
-
Morphological and molecular characterization of plant-parasitic nematode Quinisulcius capitatus (Allen, 1955) Siddiqi, 1971 from Gilgit Province, Pakistan Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-05 Erum Iqbal, Ebrahim Shokoohi, Sagir Hussain, Phatu William Mashela, Nasira Kazi
In a comprehensive survey of plant-parasitic nematodes of Gilgit Province, Pakistan, Quinisulcius capitatus (Allen, 1955) Siddiqi, 1971, was detected from 10 localities at high population density (≥1000 nematodes/100 g of soil) infecting different crop plantations. Morphplogical and molecular variations using principle component analysis of Q. capitatus have been given in this research. This species
-
Increase of canker disease severity in blueberries caused by Neofusicoccum parvum or Lasiodiplodia theobromae due to interaction with Macrophomina phaseolina root infection Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-05 M. Avilés, B. de los Santos, C. Borrero
Huelva (Spain) is the largest European producer of blueberry for early spring harvest. Blueberry fields in Huelva are intensively cultured. Canker or stem blight of blueberry and the resultant twig dieback caused mostly by botryosphaeriaceous species has become a serious problem throughout blueberry producing areas worldwide; although the presence of Botryosphaeriaceae species associated with this
-
Metabarcoding shows multiple Phytophthora species associated with individual plant species: implications for restoration Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-05 Jamba Gyeltshen, William A. Dunstan, Christopher Shaw, Kay Howard, Andrew H. Grigg, Giles E. St. J. Hardy, Treena I. Burgess
Severe tree decline in natural ecosystems around the world has driven Phytophthora research, resulting in a better understanding of the diversity and association of Phytophthora species with different host plants. Improved molecular techniques have contributed significantly to that understanding. The devastating impact of Phytophthora dieback in native vegetation in the southwest of Western Australia
-
Impact of DNA extraction efficiency on the sensitivity of PCR-based plant disease diagnosis and pathogen quantification Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-05 Yalong Yang, Qixing Zhou, Kher Zahr, Michael W. Harding, David Feindel, Jie Feng
PCR and qPCR are important methods for plant disease diagnosis and quantification of pathogen populations in host tissues or soil. For most plant diseases, DNA extracted from infected tissue or soil is a prerequisite for PCR or qPCR. The efficiency of DNA extraction should have a direct impact on the sensitivity of PCR and qPCR systems. In this study, plant pathogen DNA extraction efficiencies were
-
Identification and pathogenicity of Fusarium spp. associated with tuber dry rot and wilt of potato in Algeria Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-05 Nadia Azil, Emil Stefańczyk, Sylwester Sobkowiak, Saliha Chihat, Houda Boureghda, Jadwiga Śliwka
Fusarium is one of the most important genera of phytopathogenic fungi, causing potato wilt in the field and potato tuber dry rot during storage. The objectives of this study were to identify Fusarium species associated with both potato diseases in different growing regions in Algeria, and to assess their pathogenicity. Among the 152 isolates collected from symptomatic potato plants and tubers in different
-
6-pentyl-α-pyrone from Trichoderma koningii induces systemic resistance in tobacco against tobacco mosaic virus Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-26 Mohamed A. Taha, Ahmed A. Ismaiel, Rania M. Ahmed
This study aimed at evaluating the ability of 6-pentyl-α-pyrone (6PP) isolated from Trichoderma koningii CTX1172 (AUMC 11520), an endophytic fungal strain to induce systemic resistance in tobacco (Nicotiana tabacum cv. White Burley) plant against tobacco mosaic virus (TMV). 6PP exhibited 10–60% symptoms inhibition at low concentrations (10–30 μg mL−1) achieving 100% biocontrol efficacy at high concentrations
-
Characterization of Fusarium root rot disease in grafted watermelon Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-24 Man Zhang, Xingping Yang, Jinhua Xu, Guang Liu, Xiefeng Yao, Runsheng Ren
Root rot is an emerging disease of grafted watermelon in China that causes severe yield losses. The causal agents associated with this disease were characterized in this study. A total of 70 fungal isolates were recovered from infected roots, and the most prevalent isolates were identified as Fusarium oxysporum (31% of isolates recovered). F. oxysporum isolates induced typical root rot disease symptoms
-
Effectiveness and efficacy of superficial disinfectants to prevent mechanical transmission of Cryphonectria parasitica from chestnut scion woods Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-26 Seçil Akilli Şimşek, Burak Akyüz, Yakup Zekai Katircioğlu, Ümit Serdar, Salih Maden
Chestnut blight caused by Cryphonectria parasitica is a severe disease worldwide affecting chestnut trees. One pathway for its long-range transmission is grafting by using non-symptomatic scions. The effects of five disinfectants, 80% ethanol, 2.5% NaOCl, 5% H2O2, 2% copper sulphate and Lysol® (Brand III), were evaulated on artificially inoculated scions of 15–20 cm with a spore suspension (1 × 106
-
Occurrence of Curtobacterium flaccumfaciens pv . flaccumfaciens in the state of Paraná and its pathogenicity in beans Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-03 Jacqueline Dalbelo Puia, Merilin Gabrieli Dal Ben Ferreira, Adriano Thibes Hoshino, Leandro Camargo Borsato, Marcelo Giovanetti Canteri, Sandra Cristina Vigo
Curtobacterium flaccumfaciens pv. flaccumfaciens (Cff) is a bacterial vascular pathogen that infects economically important crops, such as soybean and beans. Currently, this pathogen is widespread in the main bean-producing regions, causing great economic losses. Considering the environmental adaptability of this pathogen and its evolution over time, it is necessary to obtain new information and analyse
-
Whole genome characterization of strains belonging to the Ralstonia solanacearum species complex and in silico analysis of TaqMan assays for detection in this heterogenous species complex Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2021-01-02 Viola Kurm, Ilse Houwers, Claudia E. Coipan, Peter Bonants, Cees Waalwijk, Theo van der Lee, Balázs Brankovics, Jan van der Wolf
Identification and classification of members of the Ralstonia solanacearum species complex (RSSC) is challenging due to the heterogeneity of this complex. Whole genome sequence data of 225 strains were used to classify strains based on average nucleotide identity (ANI) and multilocus sequence analysis (MLSA). Based on the ANI score (>95%), 191 out of 192(99.5%) RSSC strains could be grouped into the
-
The occurrence of bacteria from different species of Pectobacteriaceae on seed potato plantations in Poland Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-12-12 Agata Motyka-Pomagruk, Sabina Zoledowska, Wojciech Sledz, Ewa Lojkowska
Bacteria from the genera Dickeya and Pectobacterium, the causative agents of soft rot and blackleg, trigger significant economic losses in potato production worldwide. Efficient struggle with these phytopathogens is highly challenging taking into consideration the lack of available control procedures. As only preventive measures are accessible, we decided to provide insight into the soft rot Pectobacteriaceae
-
Identification and characterization of a new potyvirus infecting Muscari in Hungary Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-12-11 János Ágoston, Asztéria Almási, Katalin Salánki, László Palkovics
Grape hyacinths (Muscari spp.) are popular spring flowering bulbs in Europe and also in Hungary. In the spring of 2017, we came across grape hyacinth plants showing mosaic symptoms, which indicated viral infection. Currently Hyacinth mosaic virus (genus Potyvirus), a proposed member of the genus named Muscari mosaic virus, Arabis mosaic virus (genus Nepovirus), Cucumber mosaic virus (genus Cucumovirus)
-
Correction to: Antifungal activity and bean growth promotion of Trichoderma strains isolated from seed vs soil Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-12-03 S. Mayo-Prieto, M. P. Campelo, A. Lorenzana, A. Rodríguez-González, B. Reinoso, S. Gutiérrez, P. A. Casquero
A Correction to this paper has been published: https://doi.org/10.1007/s10658-020-02174-8
-
Entoleuca sp. infected by mycoviruses as potential biocontrol agents of avocado white root rot Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-27 Juan M. Arjona-López, Carlos J. López-Herrera
Rosellinia necatrix Prill. the causal agent of white root rot diseases causes major losses in avocado crops in Spain. To study the biocontrol of this disease, 31 antagonistic isolates were collected from the avocado rhizosphere and identified as Entoleuca sp. Studies were carried out in mycovirus detection, in vitro optimal growth temperature, mycelial compatibility groups of these isolates, and their
-
Epitypification of Cercospora coffeicola and its involvement with two different symptoms on coffee leaves in Brazil Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-26 Paula Adrielly Souza Vale, Mário Lúcio Vilela de Resende, Deila Magna dos Santos Botelho, Camila Cristina Lage de Andrade, Eduardo Alves, Cláudio Ogoshi, Sarah da Silva Costa Guimarães, Ludwig H. Pfenning
Cercospora coffeicola is the causal agent of brown eye spot, an important disease of coffee (Coffea arabica) in Brazil. However, atypical symptom as darker and larger lesions, named black spot, has been reported in field. In this study, we tested the hypothesis that the causal agent of black spot belongs to the same species pathogenic to brown eye spot. Nineteen strains obtained from diseased coffee
-
Genome-wide identification and expression analysis of the MLO gene family reveal a candidate gene associated with powdery mildew susceptibility in bitter gourd ( Momordica charantia ) Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-24 Longzheng Chen, Jing Liu, Zhiyang Liu, Pengfei Xia, Xihan Yuan, Yu Ning
Powdery mildew (PM), caused by Podosphaera xanthii, is one of the most serious disease in bitter gourd (Momordica charantia). Specific members of the Mildew Locus O (MLO) gene family act as susceptibility factors by recognizing PM pathogens and the corresponding loss-of-function mutations confer broad-spectrum durable host resistance. However, the potential PM-susceptibility genes in bitter gourd have
-
Monitoring virulence of Bremia lactucae as a breeding tool against lettuce downy mildew from south and southwest Brazilian regions Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-21 C. A. Franco, M. V. Marin, E. H. C. Silva, R. S. Soares, W. S. Candido, L. N. Souza, C. H. Caprio, R. L. Vidal, R. C. Panizzi, L. T. Braz
Lettuce downy mildew caused by Bremia lactucae is one of the main diseases in high humidity and low temperature conditions. The identification of virulence factors appearing in the pathogen population could help improve breeding programs against this disease. This study aimed to monitor and evaluate virulence dynamic changes in B. lactucae virulence among two Brazilian regions to recommend resistance
-
Disease responses of hexaploid spring wheat ( Triticum aestivum ) culms exhibiting premature senescence (dead heads) associated with Fusarium pseudograminearum crown rot Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-20 Noel L. Knight, Bethany Macdonald, Cassy Percy, Mark W. Sutherland
Hexaploid spring wheat (Triticum aestivum) may exhibit significant crown rot disease responses to infection by Fusarium pseudograminearum, with a range of susceptibility levels available in commercial cultivars. Dry conditions during grain-fill may lead to the expression of prematurely senescing culms, which typically fail to set grain. Assessment of hexaploid spring wheat plants exhibiting both non-senescent
-
Control techniques and evaluation of pathogen influence on African mahogany ( Khaya grandifoliola C. Dc.) infected by Lasiodiplodia theobromae Pat. Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-16 Thaís Vieira Webber, Tulio Veríssimo Martins, Daniella Vieira Cândida, Cristiane Aparecida Fioravante Reis, Marcos Gomes da Cunha, Carlos Roberto Sette Jr, Érico de Campos Dianese
The constant demand by society for quality timber associated with reduced exploitation of native forests has promoted the use of alternative species such as the African Mahogany (Khaya grandifoliola C. Dc.). The production cycle of this species began with the introduction of seeds in the 1970s and good silvicultural performance of the first planted matrix trees, then spreading throughout several Brazilian
-
Expression difference of P450–1 and P450–4 between G- and F-groups of Fusarium fujikuroi Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-13 W. X. Bao, S. Inagaki, S. Tatebayashi, S. Sultana, M. Shimizu, K. Kageyama, H. Suga
Fusarium fujikuroi is the pathogen of rice bakanae disease and has been intensively studied for gibberellin (GA) production. F. fujikuroi is phylogenetically subclassified into G- and F-groups, which differ in GA and fumonisin production. A higher amount of GA is produced by the G-group than the F-group. A previous study found that the GA production difference between the G-group strain Gfc0801001
-
Correction to: Emergence of Fusarium verticillioides in Finland Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-27 Tatiana Yu Gagkaeva, T. Yli-Mattila
This erratum is published due to incorrect name placement in original article.
-
Broad bean wilt virus 1 encoded VP47 and SCP are suppressors of plant post-transcriptional gene silencing Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-09-28 Caterina Carpino, Inmaculada Ferriol, Laura Elvira-González, Luis Rubio, Ezio Peri, Salvatore Davino, Luis Galipienso
Broad bean wilt virus 1 (BBWV-1, genus Fabavirus, family Secoviridae) is a bipartite positive single-stranded RNA (+ssRNA) virus infecting important horticultural and ornamental crops worldwide. RNA1 encodes proteins involved in virus replication, whereas RNA2 encodes the large and small coat proteins (LCP, and SCP, respectively) and two putative movement proteins with overlapping C-terminal but different
-
A qPCR-based method for the detection and quantification of the peach powdery mildew ( Podosphaera pannosa ) in epidemiological studies Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-17 Neus Marimon, Iban Eduardo, Maela León, Mónica Berbegal, Josep Armengol, Jordi Luque
A qPCR-based method was developed to detect and quantify Podosphaera pannosa, the main causal agent of peach powdery mildew. A primer pair was designed to target part of the ITS region of the fungal ribosomal DNA, which proved to be highly specific and sensitive. A minimum of 2.81 pg µL− 1 of P. pannosa DNA and 6 conidia mL− 1 in artificially-prepared conidia suspensions were found to be the limit
-
Raspberry bushy dwarf virus in Slovenia - geographic distribution, genetic diversity and population structure Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-09-17 Irena Mavrič Pleško, Janja Lamovšek, Andreja Lešnik, Mojca Viršček Marn
Raspberry bushy dwarf virus (RBDV) is a long-known virus naturally infecting Rubus and grapevine. It is also one of the economically most important viruses of raspberries, but there are only a limited number of sequences covering a substantial part of the genome available in the databases. The aim of this study was: i) to study the geographic distribution of RBDV in Slovenia, and ii) to sequence RNA2
-
Virulence variability of Ethiopian Zymoseptoria tritici isolates and efficacy of wheat genotypes and Stb resistance genes against the isolates Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-22 Tilahun Mekonnen, Teklehaimanot Haileselassie, Bekele G. Abayo, Kassahun Tesfaye
Septoria tritici blotch caused by the fungus Zymoseptoria tritici is a serious threat to wheat production worldwide. Knowledge of physiologic specialization of the pathogen and identification of potential source of resistance are prerequisite for designing durable management strategies. The present study was targeted to determine the virulence pattern of eight bread wheat derived Ethiopian Z. tritici
-
Seasonal dynamics and tissue distribution of two major viruses associated with grapevine Leafroll under cool climate condition Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-21 Mehdi Shabanian, Huogen Xiao, Baozhong Meng
Grapevine leafroll-associated virus-2 (GLRaV-2) and GLRaV-3 are both (+) ssRNA viruses of the family Closteroviridae and are involved in grapevine leafroll, the most destructive viral disease affecting the global grape/wine industry. Outbreaks of the disease were recently reported in Canada, causing serious concerns to the grape/wine industry. Reliable, sensitive and timely detection is key to the
-
Correction to: Interaction between ‘Candidatus Phytoplasma australasiae’ and tomato yellow leaf curl virus in tomato plants Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-11 Nazanin Ebadi, Gilda Najafipour, Mohammad Mehdi Faghihi, Kavous Ayazpour, Mohammad Salehi
This erratum is published as author overlooked inclusion of minor correction during proofing.
-
Different wavelengths of visible light influence the conidial production and tolerance to ultra-violet radiation of the plant pathogens Colletotrichum acutatum and Fusarium fujikuroi Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-09 Tacyana P. C. Costa, Eliane M. Rodrigues, Luciana P. Dias, Breno Pupin, Paulo C. Ferreira, Drauzio E. N. Rangel
The effects of the visible light wavelengths on germination, mycelial radial growth, and conidial production of the plant pathogens Colletotrichum acutatum and Fusarium fujikuroi were studied. Both fungi were grown on potato dextrose agar medium (PDA) in the dark (control) or on PDA under continuous white, blue, green or red light. In addition, the conidia from each treatment were exposed to UV radiation
-
Sequevar distribution of Ralstonia spp. in Solanaceae in the semiarid climate of the Pernambuco state, Brazil Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-08 Greecy Mirian R. Albuquerque, Adriano M. F. Silva, Jéssica R. Silva, Edilaine A. Melo, Rosa L. R. Mariano, Maria Cristina Lemos, Edinardo Ferraz, Elineide B. Souza
The phylogenetic relationships and distribution of Ralstonia pseudosolanacearum and Ralstonia solanacearum sequevars were analyzed in 108 strains of Solanaceae in three mesoregions of the Pernambuco State, Brazil. These mesoregions are characterized by a semiarid climate and account for 88.20% of the area of the state. Ralstonia pseudosolanacearum (phylotype I, biovar 3) was predominant in Agreste
-
Panicum maximum as a reservoir of a potential maize pathogen Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-06 N. C. Maia, M. P. Melo, S. S. C. Guimarães, K. S. Matos, S. I. Moreira, U. G. P. Lana, P. G. Cardoso
Endophytic fungi are capable of infecting plants without inducing the development of any observable symptoms. Certain fungal species can also coexist as latent pathogens in their specific hosts. Several species of Fusarium have been reported to form an association with grasses as endophytes or latent pathogens, some of which are also mycotoxin producers. In this study, we aimed to address whether forage
-
Evaluation of the combined application of Purpureocillium lilacinum PLSAU-1 and Glomus sp. against Meloidogyne incognita : implications for arsenic phytotoxicity on eggplant Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-06 H. Khalid, F. M. Aminuzzaman, K. Amit, A. A. Faria, A. I. Mitu, M. S. M. Chowdhury, J. Shammi, M. A. Khan
Glasshouse pot experiments were conducted to evaluate the efficacy of Purpureocillium lilacinum PLSAU-1 (Pl) either alone or in combination with Glomus sp. (G) to control southern root-knot nematode, Meloidogyne incognita (Mi) in Solanum melongena in arsenic (AS)-contaminated soil. Root fragments of maize seedlings were applied to 5 g roots containing approximately 200 G colonized root fragments/100 g
-
Biological, epidemiological and population structure analyses of vitiviruses in Iran Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-11-04 Simin Sabaghian, Farshad Rakhshandehroo, H. R. Zamanizadeh, Toufic Elbeaino
The presence of three vitiviruses associated with grapevine rugose wood disease, i.e. grapevine virus B (GVB), grapevine virus E (GVE) and grapevine virus F (GVF), was studied in 650 grapevine samples collected from eight viticulture growing provinces of Iran. RT-PCR assays conducted on these samples showed that 69.5% of the grapevine material is infected at least with one virus; of which GVE was the
-
Disinfection treatments eliminated tomato brown rugose fruit virus in tomato seeds Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-31 N. Samarah, A. Sulaiman, N. M. Salem, M. Turina
Tomato brown rugose fruit virus (ToBRFV), belonging to the genus Tobamovirus, is a highly-virulent emerging virus species, causing disease outbreaks and significant crop losses worldwide. No effective measure has been identified to control ToBRFV infection. Therefore, the objectives of this study were to investigate the effectiveness of three seed disinfection treatments on the elimination of ToBRFV
-
Antifungal activity and bean growth promotion of Trichoderma strains isolated from seed vs soil Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-29 S. Mayo-Prieto, M. P. Campelo, A. Lorenzana, A. Rodríguez-González, B. Reinoso, S. Gutiérrez, P. A. Casquero
The common bean is a legume crop distributed worldwide. Dry bean production has gone through increasing difficulties due to relatively low yields in the last few years. Rhizoctonia solani is one of the root and hypocotyl pathogens that causes most of the economic losses in this crop. One promising strategy to control plant diseases is the use of biological control agents, able to reduce the negative
-
Exploring actinomycetes and endophytes of rice ecosystem for induction of disease resistance against bacterial blight of rice Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-24 Kakumoni Saikia, L. C. Bora
Biocontrol agents and plant growth promoting microbes have emerged as promising tools for the management of plant diseases and in sustainable crop production. The present study was made to explore the potential metabolites of actinomycetes and endophytes of rice (Oryza sativa L.) and to assay the induced defence reactions in rice plants against bacterial blight (BB) of rice (Xanthomonas oryzae pv.
-
Fast and reliable procedure developed to generate soft rot Pectobacteriaceae ( Pectobacterium spp. and Dickeya spp.) Tn5 mutants resistant to bacteriophage infection Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-23 Robert Czajkowski
A simple and fast procedure has been developed to generate soft rot Pectobacteriaceae (SRP: Pectobacterium spp. and Dickeya spp.) Tn5 mutants in genes encoding receptors used by bacteriophages to interact with their hosts, for the follow-up studies. The procedure is inexpensive and does not require any specialized tools and/or dedicated technical support. The neomycin-resistant SRP Tn5 mutants are
-
Pectobacterium carotovorum subsp. actinidiae associated with canker on pear trees in Brazil Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-22 Leonardo Araujo, Yuliet Franco Cardoza, Valmir Duarte, Marcelo Gravina de Moraes
In summer of 2016, cankers were observed on 8-year-old pear trees (Pyrus communis L.) cv. Yali grafted on the Caleriana rootstock, in a commercial orchard in Monte Castelo, SC. Eight hundred out of 1200 trees died and the rest of the orchard was eradicated. Affected plants showed cankers on trunks and twigs with exudation; the branches turned brown and slowly died. Bacterial colonies were isolated
-
Study of infection process of five species of Colletotrichum comparing symptoms of glomerella leaf spot and bitter rot in two apple cultivars Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-21 Rafaele Regina Moreira, Erica Camila Zielinski, Camilla Castellar, Armando Bergamin Filho, Louise Larissa May De Mio
Bitter rot (BR) and glomerella leaf spot (GLS) occur in all the Brazilian South orchards with different species frequency per region. The main species found in Brazil belong to the Colletotrichum acutatum complex (Cac) and to the C. gloeosporioides complex (Cgc). The objectives of this study were to evaluate the favorable conditions for the germination and growth of five Colletotrichum species and
-
Seed health status and germination of Eucalyptus spp. Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-21 E. Mangwende, P. W. Chirwa, T. A. S. Aveling
The presence of disease causing microorganisms on seeds raises serious quarantine and economic concerns to nurserymen, foresters and seed traders. The agar plate method was used to examine seed-borne mycoflora associated with Eucalyptus seed lots and their effect on seed germination was determined. A total of 35 fungal species from 29 genera were identified from 12 different Eucalyptus species. The
-
Resistance of Monilinia fructicola to thiophanate-methyl in Croatia Eur. J. Plant Pathol. (IF 1.582) Pub Date : 2020-10-19 Dario Ivić, Tina Fazinić, Adrijana Novak, Lorena Šajbić, Miloš Stepanović, Tanja Gotlin Čuljak, Tihomir Miličević
Croatian isolates of Monilinia fructicola, M. laxa and M. fructigena have been collected from peach, nectarine, sweet cherry, plum and apricot fruits and assessed for their sensitivity to thiophanate-methyl. Out of 66 isolates collected, 34 were identified as M. fructicola (52%), 22 as M. fructigena (33%) and 10 as M. laxa (15%). Mycelial radial growth on water agar amended with thiophanate-methyl
Contents have been reproduced by permission of the publishers.