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Ndn needle blight11/8/2023 ![]() Lophodermium needle cast Lophodermium is a complex genus comprised of both needle casts pathogens and foliar endophytes on a diverse group of plant hosts (Ortiz-Garcia et al., 2003 Sieber, 1988 Müller & Hallaksela, 1998). acicola occurs in June and August (Kais, 1975). In North America, BSNB infection can take place throughout the year but the highest sporulation of L. As the infection progresses, lesions increase in size resulting in necrosis and premature defoliation (Adamson et al., 2015). ![]() Round black stromata develop under the epidermis of the needle and later form conidiomata. acicola has been maintained A1 quarantine status throughout South America, Africa, and Eurasian Economic Union countries (EPPO, 2008).īrown spot needle blight symptoms are first expressed as yellowish lesions with a clear border sometimes resin-soaked on infected needles. In Europe and Columbia, this fungus is considered as an A2 quarantine pathogen. This fungus is a cosmopolitan pathogen and has been reported in other continents such as Asia (Suto & Ougi, 1998), Africa (Patton, 1997) and Europe (Lavy & Lafaurie, 1994 Cleary et al., 2019). According to Nest et al., (2019), Mesoamerica (Mexico, Guatemala) is a center of diversity for the genus Lecanosticta but the origin of Lecanosticta acicola is believed to be North America. Thümen (1878) in South Carolina, USA (Tainter & Baker, 1996 Adamson et al., 2018). Lecanosticta acicola is the needle pathogen responsible for brown spot needle blight (BSNB) a disease of several conifer species.
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