Emerging virus and viroid pathogen species identified for the first time in horticultural plants in Finland in 1997-2010

Abstract

Expansion and intensification of global trade in horticultural plants has increased the risk of spread of new alien pathogen species in the European Union (EU). Alien species of pathogenic viruses and viroids in horticultural plants have been introduced into Finland in infected plant material (plants, seedlings, cuttings, tubers, seeds). By 1997, about 30 virus species of horticultural plants had been detected in Finland. We aimed at compiling emerging new virus and viroid records during 1997-2010. Eight new viruses belonging to tospo-, potex-, poty-, tymo-, ilar-and allexiviruses were detected in horticultural plants: four occurred in greenhouse crops, two in vegetables and two in garden ornamentals outdoors. Five new findings of viroids were made in ornamental and vegetable greenhouse crops during 2008-2009. More rapid and accurate diagnostic methods have contributed to identifying new alien pathogens. Global trade seems to be the main reason for the introduction of the newest virus and viroid pathogens into Finland.

Impacts of exotic forest pathogens on Mediterranean ecosystems: four case studies

“…Since it can be reasonably assumed that the likelihood of entry is proportionate to the traded volume of susceptible or potentially infected plant host material (Krcmar 2008;MacLeod et al 2010;Marini et al 2011), the increase over the last decades in traded plants Lemmetty et al 2011) cannot but have increased the risk of introducing Phytophthora species in countries where they were not yet present. Establishment and spread potentials are related to the number of introduction events, but are also limited by the presence of suitable climate and hosts.…”

Climate change and its effects on agricultural production in Finland – research efforts during the past 50 years

“…The results of different agriculture-related projects in ISTO pointed to the need to prepare Finnish agriculture for new opportunities for production (ILMASOPU: Peltonen-Sainio et al 2009a, 2009b, 2011a, 2011b, but also for new pests, pathogens and weeds (TUPOLEV: Latvala-Kilby et al 2009, Lehtinen et al 2009, Hannukkala 2011, Heikkilä 2011, Hyvönen 2011, Hyvönen and Jalli 2011, Lemmetty et al 2011, Lilja et al 2011, Vänninen et al 2011, Hyvönen and Ramula 2014. A need for a new level of resilience of farms, crops and cropping systems to meet the increasing frequency of extreme events, such as long periods of hot weather or heavy rains, was identified (ADACAPA: Hakala et al 2012b, Kahiluoto et al 2014.…”

Риски Распространения В РФ Новых Вирусных И Бактериальных Болезней Овощных Культур Через Предприятия Защищенного Грунта

“…Растения томата, заразившиеся в молодом возрасте, останавливаются в росте и не образуют плодов. Следующие листья хлоротичные, с деформированными пластинками, закрученными вверх краями и искривлениями между жилками [14] (рис. 2).…”