First Report of Bark Canker Disease of Poplar Caused by Lonsdalea quercina subp. populi in Spain

Berruete, I.M. ; Cambra, M.A. ; Collados, R. ; Monterde, A. ; Lopez, M.M. ; Cubero, J. ; Palacio-Bielsa, A.

Resumen: Symptoms of a bacterial disease were observed in nine plantations of hybrid poplar clones (Populus × interamericana ‘Beaupré, ’ and Populus × euramericana ‘I-214’ and ‘MC’) in five localities of Castilla y León and Aragón (north and northeastern Spain, respectively) in summer 2002, 2014, and 2015. Affected trees were from 9 to 26 years old and disease incidence was up to 30% in some poplar stands. The bark of symptomatic trees was vertically cracked and copious white frothy fluid and creamy slime was observed. Some severely affected trees even died after few years. Isolations from exudates on King’s B medium yielded colonies light cream colored, round, slightly convex, and not fluorescent under UV light. A selection of 10 purified isolates was further characterized and compared with the reference strain DSM25466T of Lonsdalea quercina subsp. populi (Tóth et al. 2013). All bacterial isolates were Gram-negative, facultative anaerobic, produced levan positive colonies, and were esculin hydrolysis positive, but negative for oxidase, urease, and tobacco hypersensitivity...

Idioma: Inglés

DOI: 10.1094/PDIS-03-16-0405-PDN

Año: 2016

Publicado en: PLANT DISEASE 100, 10 (2016), 2159-2159
ISSN: 0191-2917

Factor impacto JCR: 3.173 (2016)

Categ. JCR: PLANT SCIENCES rank: 35 / 211 = 0.166 (2016) - Q1 - T1

Factor impacto SCIMAGO: 0.62 - Plant Science (Q2) - Agronomy and Crop Science (Q2)

Tipo y forma: Article (Published version)