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

•Lecanosticta spp.now recorded in 44 countries, mostly in the northern hemisphere.•L. acicola has increased its range, now found in 24 out of 26 European countries.•Climate change means L. acicola could affect 74% of Pinus forested area by 2100.•Lecanosticta species were recorded on 70 hosts, includ...

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Published in:Forest ecology and management 2023-05, Vol.536, p.120847-120847, Article 120847
Main Authors: 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.
Format: Article
Language:English
Subjects:
Brown spot needle blight
Climate change
Ecology
Ekologi
Emerging and invasive pathogens
Forest conservation
Forest health protection
Forest management
Forest Science
Mycosphaerella dearnessii
Pinus
Skogsvetenskap
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Summary:•Lecanosticta spp.now recorded in 44 countries, mostly in the northern hemisphere.•L. acicola has increased its range, now found in 24 out of 26 European countries.•Climate change means L. acicola could affect 74% of Pinus forested area by 2100.•Lecanosticta species were recorded on 70 hosts, including Pinus, Cedrus and Picea.•We explore global BSNB management strategies using European Case studies. 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 significance in Europe, are highly susceptible to L. acicola, suffering heavy defoliation and sometimes mor
ISSN:0378-1127
1872-7042
1872-7042
0378-1127
DOI:10.1016/j.foreco.2023.120847