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27 results on '"Ogris, N."'

1. The increasing threat to European forests from the invasive foliar pine pathogen, Lecanosticta acicola

Author

Estonian Science Foundation, Russian Academy of Sciences, Swedish Research Council, Ministry of Regional Affairs and Agriculture (Estonia), Ministry of Education and Science (Bulgaria), Università degli Studi di Firenze, European Commission, Slovenian Research Agency, Federal Office for the Environment (Switzerland), Tubby, K. [0000-0001-6864-4185], Adamčikova, K. [0000-0001-5407-5233], Adamson, K. [0000-0002-8810-8838], Akiba, M. [0000-0003-1412-9596], Barnes, Irene [0000-0002-4349-3402], Boroń, P. [0000-0002-8581-6759], Bragança, H. [0000-0002-7957-5493], Bulgakov, T. [0000-0002-4874-6851], Capretti, P. [0000-0002-1893-9871], Cech, T. [0000-0001-6681-5040], Cleary, M. [0000-0002-0318-5974], Davydenko, K. [0000-0001-6077-8533], Elvira Recuenco, Margarita [0000-0001-6749-3346], Enderle, R. [0000-0002-3436-9581], Georgieva, M. [0000-0003-3165-1992], Ghelardini, L. [0000-0002-3180-4226], Husson, C. [0000-0002-9148-9926], Iturritxa, Eugenia [0000-0002-6390-5873], Markovskaja, S. [0000-0003-3111-6949], Mesanza, Nebai [0000-0002-1578-9193], Ogris, N. [0000-0002-4058-9417], Oskay, F. [0000-0002-8918-5595], Piškur, B. [0000-0002-9914-4930], Queloz, V. [0000-0002-1888-4882], Raitelaitytė, K. [0000-0001-9753-9712], Raposo Llobet, María Rosa [0000-0002-4893-6874], Soukainen, M. [0000-0001-6686-0191], Vahalík, P. [0000-0003-3404-3095], Vester, M. [0000-0003-3596-4873], Mullett, M. [0000-0002-6013-0347], Tubby, K., Adamčikova, K., Adamson, K., Akiba, M., Barnes, Irene, Boroń, P., Bragança, H., Bulgakov, T., Burgdorf, N., Capretti, P., Cech, T., Cleary, M., Davydenko, K., Drenkhan, R., Elvira Recuenco, Margarita, Enderle, R., Gardner, J., Georgieva, M., Ghelardini, L., Husson, C., Iturritxa, Eugenia, Markovskaja, S., Mesanza, Nebai, Ogris, N., Oskay, F., Piškur, B., Queloz, V., Raitelaitytė, K., Raposo Llobet, María Rosa, Soukainen, M., Strasser, Ludwig, Vahalík, P., Vester, M., Mullett, M., Estonian Science Foundation, Russian Academy of Sciences, Swedish Research Council, Ministry of Regional Affairs and Agriculture (Estonia), Ministry of Education and Science (Bulgaria), Università degli Studi di Firenze, European Commission, Slovenian Research Agency, Federal Office for the Environment (Switzerland), Tubby, K. [0000-0001-6864-4185], Adamčikova, K. [0000-0001-5407-5233], Adamson, K. [0000-0002-8810-8838], Akiba, M. [0000-0003-1412-9596], Barnes, Irene [0000-0002-4349-3402], Boroń, P. [0000-0002-8581-6759], Bragança, H. [0000-0002-7957-5493], Bulgakov, T. [0000-0002-4874-6851], Capretti, P. [0000-0002-1893-9871], Cech, T. [0000-0001-6681-5040], Cleary, M. [0000-0002-0318-5974], Davydenko, K. [0000-0001-6077-8533], Elvira Recuenco, Margarita [0000-0001-6749-3346], Enderle, R. [0000-0002-3436-9581], Georgieva, M. [0000-0003-3165-1992], Ghelardini, L. [0000-0002-3180-4226], Husson, C. [0000-0002-9148-9926], Iturritxa, Eugenia [0000-0002-6390-5873], Markovskaja, S. [0000-0003-3111-6949], Mesanza, Nebai [0000-0002-1578-9193], Ogris, N. [0000-0002-4058-9417], Oskay, F. [0000-0002-8918-5595], Piškur, B. [0000-0002-9914-4930], Queloz, V. [0000-0002-1888-4882], Raitelaitytė, K. [0000-0001-9753-9712], Raposo Llobet, María Rosa [0000-0002-4893-6874], Soukainen, M. [0000-0001-6686-0191], Vahalík, P. [0000-0003-3404-3095], Vester, M. [0000-0003-3596-4873], Mullett, M. [0000-0002-6013-0347], Tubby, K., Adamčikova, K., Adamson, K., Akiba, M., Barnes, Irene, Boroń, P., Bragança, H., Bulgakov, T., Burgdorf, N., Capretti, P., Cech, T., Cleary, M., Davydenko, K., Drenkhan, R., Elvira Recuenco, Margarita, Enderle, R., Gardner, J., Georgieva, M., Ghelardini, L., Husson, C., Iturritxa, Eugenia, Markovskaja, S., Mesanza, Nebai, Ogris, N., Oskay, F., Piškur, B., Queloz, V., Raitelaitytė, K., Raposo Llobet, María Rosa, Soukainen, M., Strasser, Ludwig, Vahalík, P., Vester, M., and Mullett, M.

Abstract

European forests are threatened by increasing numbers of invasive pests and pathogens. Over the past century, Lecanosticta acicola, a foliar pathogen predominantly of Pinus spp., has expanded its range globally, and is increasing in impact. Lecanosticta acicola causes brown spot needle blight, resulting in premature defoliation, reduced growth, and mortality in some hosts. Originating from southern regions of North American, it devastated forests in the USA's southern states in the early twentieth century, and in 1942 was discovered in Spain. Derived from Euphresco project 'Brownspotrisk,' this study aimed to establish the current distribution of Lecanosticta species, and assess the risks of L. acicola to European forests. Pathogen reports from the literature, and new/ unpublished survey data were combined into an open-access geo-database (http://www.portalofforestpathology.com), and used to visualise the pathogen's range, infer its climatic tolerance, and update its host range. Lecanosticta species have now been recorded in 44 countries, mostly in the northern hemisphere. The type species, L. acicola, has increased its range in recent years, and is present in 24 out of the 26 European countries where data were available. Other species of Lecanosticta are largely restricted to Mexico and Central America, and recently Colombia. The geo-database records demonstrate that L. acicola tolerates a wide range of climates across the northern hemisphere, and indicate its potential to colonise Pinus spp. forests across large swathes of the Europe. Preliminary analyses suggest L. acicola could affect 62% of global Pinus species area by the end of this century, under climate change predictions. Although its host range appears slightly narrower than the similar Dothistroma species, Lecanosticta species were recorded on 70 host taxa, mostly Pinus spp., but including, Cedrus and Picea spp. Twenty-three, including species of critical ecological, environmental and economic significan

Published
2023

2. The increasing threat to European forests from the invasive foliar pine pathogen, Lecanosticta acicola

Author

Tubby, K., primary, Adamčikova, K., additional, Adamson, K., additional, Akiba, M., additional, Barnes, I., additional, Boroń, P., additional, Bragança, H., additional, Bulgakov, T., additional, Burgdorf, N., additional, Capretti, P., additional, Cech, T., additional, Cleary, M., additional, Davydenko, K., additional, Drenkhan, R., additional, Elvira-Recuenco, M., additional, Enderle, R., additional, Gardner, J., additional, Georgieva, M., additional, Ghelardini, L., additional, Husson, C., additional, Iturritxa, E., additional, Markovskaja, S., additional, Mesanza, N., additional, Ogris, N., additional, Oskay, F., additional, Piškur, B., additional, Queloz, V., additional, Raitelaitytė, K., additional, Raposo, R., additional, Soukainen, M., additional, Strasser, L., additional, Vahalík, P., additional, Vester, M., additional, and Mullett, M., additional

Published
2023
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3. The increasing threat to European forests from the invasive foliar pine pathogen, Lecanosticta acicola

Author

Tubby K., Adamčikova K., Adamson K., Akiba M., Barnes I., Boroń P., Bragança H., Bulgakov T., Burgdorf N., Capretti P., Cech T., Cleary M., Davydenko K., Drenkhan R., Elvira-Recuenco M., Enderle R., Gardner J., Georgieva M., Ghelardini L., Husson C., Iturritxa E., Markovskaja S., Mesanza N., Ogris N., Oskay F., Piškur B., Queloz V., Raitelaitytė K., Raposo R., Soukainen M., Strasser L., Vahalík P., Vester M., Mullett M., Tubby K., Adamčikova K., Adamson K., Akiba M., Barnes I., Boroń P., Bragança H., Bulgakov T., Burgdorf N., Capretti P., Cech T., Cleary M., Davydenko K., Drenkhan R., Elvira-Recuenco M., Enderle R., Gardner J., Georgieva M., Ghelardini L., Husson C., Iturritxa E., Markovskaja S., Mesanza N., Ogris N., Oskay F., Piškur B., Queloz V., Raitelaitytė K., Raposo R., Soukainen M., Strasser L., Vahalík P., Vester M., and Mullett M.

Published
2023

6. The increasing threat to European forests from the invasive foliar pine pathogen, Lecanosticta acicola

Author

Tubby, Katherine, Adamcikova, K., Adamson, K., Akiba, M., Barnes, I., Boron, P., Braganca, H., Bulgakov, T., Capretti, P., Cleary, Michelle, Davydenko, Kateryna, Elvira-Recuenco, M., Enderle, R., Gardner, J., Geogieva, M., Ghelardini, L., Husson, C., Iturritxa, E., Markovskaja, S., Mesanza, N., Ogris, N., Piskur, B., Queloz, V., Raitelaityte, K., Raposo, R., Soukainen, M., Strasser, L., Vester, M., Vahalik, P., and Mullett, Martin

Subjects
Ecology, Forest Science
Abstract

European forests are threatened by increasing numbers of invasive pests and pathogens. Over the past century, Lecanosticta acicola, a foliar pathogen predominantly of Pinus spp., has expanded its range globally, and is increasing in impact. Lecanosticta acicola causes brown spot needle blight, resulting in premature defoliation, reduced growth, and mortality in some hosts. Originating from southern regions of North American, it devastated forests in the USA's southern states in the early twentieth century, and in 1942 was discovered in Spain.Derived from Euphresco project 'Brownspotrisk,' this study aimed to establish the current distribution of Lecanosticta species, and assess the risks of L. acicola to European forests. Pathogen reports from the literature, and new/ unpublished survey data were combined into an open-access geo-database (http://www.portaloff orestpathology.com), and used to visualise the pathogen's range, infer its climatic tolerance, and update its host range. Lecanosticta species have now been recorded in 44 countries, mostly in the northern hemisphere. The type species, L. acicola, has increased its range in recent years, and is present in 24 out of the 26 European countries where data were available. Other species of Lecanosticta are largely restricted to Mexico and Central America, and recently Colombia.The geo-database records demonstrate that L. acicola tolerates a wide range of climates across the northern hemisphere, and indicate its potential to colonise Pinus spp. forests across large swathes of the Europe. Pre-liminary analyses suggest L. acicola could affect 62% of global Pinus species area by the end of this century, under climate change predictions.Although its host range appears slightly narrower than the similar Dothistroma species, Lecanosticta species were recorded on 70 host taxa, mostly Pinus spp., but including, Cedrus and Picea spp. Twenty-three, including species of critical ecological, environmental and economic significance in Europe, are highly susceptible to L. acicola, suffering heavy defoliation and sometimes mortality. Variation in apparent susceptibility between reports could reflect variation between regions in the hosts' genetic make-up, but could also reflect the signif-icant variation in L. acicola populations and lineages found across Europe. This study served to highlight sig-nificant gaps in our understanding of the pathogen's behaviour.Lecanosticta acicola has recently been downgraded from an A1 quarantine pest to a regulated non quarantine pathogen, and is now widely distributed across Europe. With a need to consider disease management, this study also explored global BSNB strategies, and used Case Studies to summarise the tactics employed to date in Europe.

Published
2023

7. Global geographic distribution and host range of fusarium circinatum, the causal agent of pine pitch canker

Author

European Commission, Estonian Science Foundation, Agence Nationale de la Recherche (France), Scottish Government, Office fédéral de l'environnement (Suisse), Martín-García, Jorge [0000-0002-3057-3710], Vahalík, P. [0000-0003-3404-3095], Adamson, K. [0000-0002-8810-8838], Adamčikova, K. [0000-0001-5407-5233], Ahumada, Rodrigo [0000-0002-2397-2721], Blank, Lior [0000-0002-8753-0113], Bragança, H. [0000-0002-7957-5493], Capretti, P. [0000-0002-1893-9871], Cleary, M. [0000-0002-0318-5974], Cornejo, Carolina [0000-0003-3259-6198], Davydenko, K. [0000-0001-6077-8533], Díez, Julio Javier [0000-0003-0558-8141], Doǧmuş-Lehtijärvi, Hatice T. [0000-0002-1050-8823], Dvorák, Milon [0000-0002-4390-4718], Enderle, R. [0000-0002-3436-9581], Fourie, Gerda [0000-0003-2650-5448], Georgieva, M. [0000-0003-3165-1992], Ghelardini, L. [0000-0002-3180-4226], Hantula, Jarkko [0000-0002-1016-0636], Ioos, Renaud [0000-0001-9359-5098], Iturritxa, Eugenia [0000-0002-6390-5873], Kanetis, Loukas [0000-0002-1869-558X], Karpun, Natalia N. [0000-0002-7696-3618], Koltay, András [0000-0001-6865-2601], Markovskaja, S. [0000-0003-3111-6949], Mesanza, Nebai [0000-0002-1578-9193], Milenkovic, Ivan [0000-0003-2792-0221], Musolin, Dmitry L. [0000-0002-3913-3674], Nowakowska, Justyna A. [0000-0001-5863-053X], Ogris, N. [0000-0002-4058-9417], Oskay, F. [0000-0002-8918-5595], Oszako, Tomasz [0000-0003-4688-2582], Papazova-Anakieva, Irena [0000-0002-7260-4685], Paraschiv, Marius [0000-0001-6916-8600], Pasquali, Matias [0000-0002-9102-2066], Pecori, Francesco [0000-0002-6577-7190], Rafoss, Trond [0000-0002-8489-4771], Raitelaitytė, K. [0000-0001-9753-9712], Raposo Llobet, María Rosa [0000-0002-4893-6874], Robin, Cecile [0000-0002-8145-245X], Rodas, Carlos A. [0000-0002-8895-8883], Sanz-Ros, Antonio V. [0000-0002-4791-8308], Selikhovkin, Andrey V. [0000-0003-4227-9647], Solla, A. [0000-0002-2596-1612], Soukainen, M. [0000-0001-6686-0191], Soulioti, Nikoleta [0000-0001-5011-0863], Steenkamp, Emma T. [0000-0003-0217-8219], Tsopelas, Panaghiotis [0000-0002-7853-4534], Vemic, Aleksandar [0000-0001-9195-8967], Vettraino, A. M. [0000-0003-0797-3297], Wingfield, Michael J. [0000-0001-9346-2009], Woodward, Stephen [0000-0002-6627-7702], Zamora-Ballesteros, Cristina [0000-0002-9728-5553], Mullett, M. [0000-0002-6013-0347], Drenkhan, R., Ganley, Beccy, Martín-García, Jorge, Vahalík, P., Adamson, K., Adamčikova, K., Ahumada, Rodrigo, Blank, Lior, Bragança, H., Capretti, P., Cleary, M., Cornejo, Carolina, Davydenko, K., Díez, Julio Javier, Doǧmuş-Lehtijärvi, Hatice T., Dvorák, Milon, Enderle, R., Fourie, Gerda, Georgieva, M., Ghelardini, L., Hantula, Jarkko, Ioos, Renaud, Iturritxa, Eugenia, Kanetis, Loukas, Karpun, Natalia N., Koltay, András, Landeras, Elena, Markovskaja, S., Mesanza, Nebai, Milenkovic, Ivan, Musolin, Dmitry L., Nikolaou, Konstantinos, Nowakowska, Justyna A., Ogris, N., Oskay, F., Oszako, Tomasz, Papazova-Anakieva, Irena, Paraschiv, Marius, Pasquali, Matias, Pecori, Francesco, Rafoss, Trond, Raitelaitytė, K., Raposo Llobet, María Rosa, Robin, Cecile, Rodas, Carlos A., Santini, Alberto, Sanz-Ros, Antonio V., Selikhovkin, Andrey V., Solla, A., Soukainen, M., Soulioti, Nikoleta, Steenkamp, Emma T., Tsopelas, Panaghiotis, Vemic, Aleksandar, Vettraino, A. M., Wingfield, Michael J., Woodward, Stephen, Zamora-Ballesteros, Cristina, Mullett, M., European Commission, Estonian Science Foundation, Agence Nationale de la Recherche (France), Scottish Government, Office fédéral de l'environnement (Suisse), Martín-García, Jorge [0000-0002-3057-3710], Vahalík, P. [0000-0003-3404-3095], Adamson, K. [0000-0002-8810-8838], Adamčikova, K. [0000-0001-5407-5233], Ahumada, Rodrigo [0000-0002-2397-2721], Blank, Lior [0000-0002-8753-0113], Bragança, H. [0000-0002-7957-5493], Capretti, P. [0000-0002-1893-9871], Cleary, M. [0000-0002-0318-5974], Cornejo, Carolina [0000-0003-3259-6198], Davydenko, K. [0000-0001-6077-8533], Díez, Julio Javier [0000-0003-0558-8141], Doǧmuş-Lehtijärvi, Hatice T. [0000-0002-1050-8823], Dvorák, Milon [0000-0002-4390-4718], Enderle, R. [0000-0002-3436-9581], Fourie, Gerda [0000-0003-2650-5448], Georgieva, M. [0000-0003-3165-1992], Ghelardini, L. [0000-0002-3180-4226], Hantula, Jarkko [0000-0002-1016-0636], Ioos, Renaud [0000-0001-9359-5098], Iturritxa, Eugenia [0000-0002-6390-5873], Kanetis, Loukas [0000-0002-1869-558X], Karpun, Natalia N. [0000-0002-7696-3618], Koltay, András [0000-0001-6865-2601], Markovskaja, S. [0000-0003-3111-6949], Mesanza, Nebai [0000-0002-1578-9193], Milenkovic, Ivan [0000-0003-2792-0221], Musolin, Dmitry L. [0000-0002-3913-3674], Nowakowska, Justyna A. [0000-0001-5863-053X], Ogris, N. [0000-0002-4058-9417], Oskay, F. [0000-0002-8918-5595], Oszako, Tomasz [0000-0003-4688-2582], Papazova-Anakieva, Irena [0000-0002-7260-4685], Paraschiv, Marius [0000-0001-6916-8600], Pasquali, Matias [0000-0002-9102-2066], Pecori, Francesco [0000-0002-6577-7190], Rafoss, Trond [0000-0002-8489-4771], Raitelaitytė, K. [0000-0001-9753-9712], Raposo Llobet, María Rosa [0000-0002-4893-6874], Robin, Cecile [0000-0002-8145-245X], Rodas, Carlos A. [0000-0002-8895-8883], Sanz-Ros, Antonio V. [0000-0002-4791-8308], Selikhovkin, Andrey V. [0000-0003-4227-9647], Solla, A. [0000-0002-2596-1612], Soukainen, M. [0000-0001-6686-0191], Soulioti, Nikoleta [0000-0001-5011-0863], Steenkamp, Emma T. [0000-0003-0217-8219], Tsopelas, Panaghiotis [0000-0002-7853-4534], Vemic, Aleksandar [0000-0001-9195-8967], Vettraino, A. M. [0000-0003-0797-3297], Wingfield, Michael J. [0000-0001-9346-2009], Woodward, Stephen [0000-0002-6627-7702], Zamora-Ballesteros, Cristina [0000-0002-9728-5553], Mullett, M. [0000-0002-6013-0347], Drenkhan, R., Ganley, Beccy, Martín-García, Jorge, Vahalík, P., Adamson, K., Adamčikova, K., Ahumada, Rodrigo, Blank, Lior, Bragança, H., Capretti, P., Cleary, M., Cornejo, Carolina, Davydenko, K., Díez, Julio Javier, Doǧmuş-Lehtijärvi, Hatice T., Dvorák, Milon, Enderle, R., Fourie, Gerda, Georgieva, M., Ghelardini, L., Hantula, Jarkko, Ioos, Renaud, Iturritxa, Eugenia, Kanetis, Loukas, Karpun, Natalia N., Koltay, András, Landeras, Elena, Markovskaja, S., Mesanza, Nebai, Milenkovic, Ivan, Musolin, Dmitry L., Nikolaou, Konstantinos, Nowakowska, Justyna A., Ogris, N., Oskay, F., Oszako, Tomasz, Papazova-Anakieva, Irena, Paraschiv, Marius, Pasquali, Matias, Pecori, Francesco, Rafoss, Trond, Raitelaitytė, K., Raposo Llobet, María Rosa, Robin, Cecile, Rodas, Carlos A., Santini, Alberto, Sanz-Ros, Antonio V., Selikhovkin, Andrey V., Solla, A., Soukainen, M., Soulioti, Nikoleta, Steenkamp, Emma T., Tsopelas, Panaghiotis, Vemic, Aleksandar, Vettraino, A. M., Wingfield, Michael J., Woodward, Stephen, Zamora-Ballesteros, Cristina, and Mullett, M.

Abstract

Fusarium circinatum, the causal agent of pine pitch canker (PPC), is currently one of the most important threats of Pinus spp. globally. This pathogen is known in many pine-growing regions, including natural and planted forests, and can affect all life stages of trees, from emerging seedlings to mature trees. Despite the importance of PPC, the global distribution of F. circinatum is poorly documented, and this problem is also true of the hosts within countries that are affected. The aim of this study was to review the global distribution of F. circinatum, with a particular focus on Europe. We considered (1) the current and historical pathogen records, both positive and negative, based on confirmed reports from Europe and globally; (2) the genetic diversity and population structure of the pathogen; (3) the current distribution of PPC in Europe, comparing published models of predicted disease distribution; and (4) host susceptibility by reviewing literature and generating a comprehensive list of known hosts for the fungus. These data were collated from 41 countries and used to compile a specially constructed geo-database. A review of 6297 observation records showed that F. circinatum and the symptoms it causes on conifers occurred in 14 countries, including four in Europe, and is absent in 28 countries. Field observations and experimental data from 138 host species revealed 106 susceptible host species including 85 Pinus species, 6 non-pine tree species and 15 grass and herb species. Our data confirm that susceptibility to F. circinatum varies between different host species, tree ages and environmental characteristics. Knowledge on the geographic distribution, host range and the relative susceptibility of different hosts is essential for disease management, mitigation and containment strategies. The findings reported in this review will support countries that are currently free of F. circinatum in implementing effective procedures and restrictions and prevent further

Published
2020

23. Temperature effect on Chalara fraxinea: heat treatment of saplings as a possible disease control method.

Author

Hauptman, T., Piškur, B., Groot, M., Ogris, N., Ferlan, M., Jurc, D., and Holdenrieder, O.

Subjects
CHALARA fraxinea, ASH dieback, TREATMENT of fungal diseases of plants, PLANT tissue culture, HOT water heating, PLANT cells & tissues, PLANT diseases
Abstract

Ash dieback is an emerging disease caused by the fungus Chalara fraxinea that severely affects Fraxinus excelsior and F. angustifolia stands in Europe. Previous studies have shown that this pathogen prefers temperatures around 20°C, while its growth in pure cultures at 30°C proved to be very limited. The purpose of this study was to determine the effects of temperature on the development and growth of C. fraxinea in pure cultures and in plant tissues, as well as to test the heat tolerance of F. excelsior saplings. The sensitivity of fungus to heat in ash tissues was higher than in pure cultures. Low isolation success rate from diseased ash tissue after a five-hour hot water treatment at 36°C and the relatively high survival rate of ash saplings after hot water treatments at 36°C and 40°C indicate possibilities for the development of a C. fraxinea eradication method in ash saplings. Field monitoring showed that in hot weather periods, thermal conditions inside the ash tissues can be extreme enough to markedly decrease the viability of C. fraxinea in infected plant tissues. [ABSTRACT FROM AUTHOR]

Published
2013
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24. First Report of Diplodia fraxini and Diplodia subglobosa Causing Canker and Dieback of Fraxinus excelsior in Slovenia.

Author

Linaldeddu BT, Bregant C, Montecchio L, Brglez A, Piškur B, and Ogris N

Subjects
Ascomycota, Plant Diseases, Slovenia, Fraxinus genetics
Abstract

In recent decades the vitality and productivity of European ash trees in Slovenia have been reduced by the onset of canker and dieback disease symptoms on young and old trees, identified primarily as ash dieback caused by Hymenoscyphus fraxineus . Given the limited information available about the etiology of this emerging disease, a study was carried out to isolate, identify, and characterize the fungal species involved in the observed ash symptoms. Field surveys were conducted in five forest sites where 50 symptomatic branch samples were collected. All samples were inspected and used for fungal isolation. Based on morphology, colony appearance, and DNA sequence data of the internal transcribed spacer region, 125 fungal colonies belonging to five species were isolated and identified. Only a few symptomatic ash samples yielded colonies of H. fraxineus , whereas Botryosphaeriaceae species were isolated with a high frequency, with Diplodia fraxini as the dominant species. A pathogenicity test proved that all isolated species were pathogenic on European ash, causing bark lesions and wood discoloration. All Botryosphaeriaceae species isolated in this study are reported for the first time on European ash in Slovenia.

Published
2022
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25. Biotic threats for 23 major non-native tree species in Europe.

Author

Pötzelsberger E, Gossner MM, Beenken L, Gazda A, Petr M, Ylioja T, La Porta N, Avtzis DN, Bay E, De Groot M, Drenkhan R, Duduman ML, Enderle R, Georgieva M, Hietala AM, Hoppe B, Jactel H, Jarni K, Keren S, Keseru Z, Koprowski M, Kormuťák A, Lombardero MJ, Lukjanova A, Marozas V, Mauri E, Monteverdi MC, Nygaard PH, Ogris N, Olenici N, Orazio C, Perny B, Pinto G, Power M, Puchalka R, Ravn HP, Sevillano I, Stroheker S, Taylor P, Tsopelas P, Urban J, Voolma K, Westergren M, Witzell J, Zborovska O, and Zlatkovic M

Subjects
Animals, Conservation of Natural Resources, Europe, Fungi, Insecta, Nematoda, Plant Diseases, Introduced Species, Trees
Abstract

For non-native tree species with an origin outside of Europe a detailed compilation of enemy species including the severity of their attack is lacking up to now. We collected information on native and non-native species attacking non-native trees, i.e. type, extent and time of first observation of damage for 23 important non-native trees in 27 European countries. Our database includes about 2300 synthesised attack records (synthesised per biotic threat, tree and country) from over 800 species. Insects (49%) and fungi (45%) are the main observed biotic threats, but also arachnids, bacteria including phytoplasmas, mammals, nematodes, plants and viruses have been recorded. This information will be valuable to identify patterns and drivers of attacks, and trees with a lower current health risk to be considered for planting. In addition, our database will provide a baseline to which future impacts on non-native tree species could be compared with and thus will allow to analyse temporal trends of impacts., (© 2021. The Author(s).)

Published
2021
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26. Calculation procedure for RITY-A phenology model of Ips typographus .

Author

Ogris N

Abstract

The RITY-2 phenology model was developed for the spatiotemporal simulation of the seasonal development of European spruce bark beetle, Ips typographus . RITY-2 is based on the PHENIPS model and was developed through improving PHENIPS with innovative approaches and calibrating and validating it for Slovenia. RITY-2 predictions are based on air temperatures from Integrated Nowcasting through a Comprehensive Analysis (INCA) system, which is used to calculate the effective bark temperature for beetle development. In this paper we describe the calculation procedure for RITY-2.•INCA enables high resolution spatial and temporal simulations and predictions.•An innovative procedure was introduced that finds the most appropriate spring date threshold from which the calculation of the phenological model is initiated.•Simplified and customized linear models for calculation of the air temperature in the forest and bark temperatures were developed., (© 2020 The Author(s). Published by Elsevier B.V.)

Published
2020
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27. Species-Specific Primers for Eutypella parasitica, the Causal Agent of Eutypella Canker of Maple.

Author

Piškur B, Ogris N, and Jurc D

Abstract

Eutypella parasitica was recently reported in Europe for the first time, and this study reports the molecular evaluation of the internal transcribed spacer (ITS)1/5.8S/ITS2 regions of 68 isolates of the fungus obtained in pure culture with polymerase chain reaction restriction fragment length polymorphism (RFLP). The RFLP patterns of all isolates proved identical and the restriction profiles served to differentiate E. parasitica from Eutypa lata, another pathogenic member of the family Diatrypaceae. Low intraspecific variability was detected in the sequenced ITS1/5.8S/ITS2 regions of eight Eutypella parasitica isolates originating from different hosts and geographical locations. Based on this ITS region, EpR/F primers specific to E. parasitica were constructed and tested with a wide range of fungal isolates. The EpR/F primer pair successfully amplified the expected fragment size of 341 bp from isolates of E. parasitica and also directly from infected maple wood shavings. The RFLP patterns and species-specific primers represent a step toward routine, large-scale, and rapid molecular diagnostics and identification of E. parasitica.

Published
2007
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