First Record of Dothistroma Septospora (Dorog.) Morelet in Poland: A Contribution to the Symptomatology and Epidemiology. Kowalski, T. & Jankowiak, R. 16:15–29.
First Record of Dothistroma Septospora (Dorog.) Morelet in Poland: A Contribution to the Symptomatology and Epidemiology [link]Paper  abstract   bibtex   
Investigations were carried out in the Miechów Forest District (20 km north of Kraków, Poland) where, in May 1990, D. septospora [Mycosphaerella pini] was observed on Pinus nigra for the first time in Poland. The disease symptoms were analysed, the fungi were isolated from needles exhibiting varying stages of disease, and the time of the occurrence of ripe spores was determined. Red transverse bands present on the attacked, prematurely dying needles were among the most characteristic symptoms. The intensity of this disease varied on individual trees and depended, among other things, on the age of the needles, their location in the crown, and age of the tree. It also varied in individual years during the study period 1990-1997. Over 30 species of fungi were isolated from infected needles. It turned out that even from needle fragments with typical symptoms of red band disease it was difficult to isolate M. pini, a proper causal agency of this disease. Great differences in size of the macroconidia were found, depending on whether they were produced in vivo or in vitro. The macroconidia occurred on attacked and dead needles of P. nigra during an entire growing season. They were most abundant during the period from May to July with a distinct peak in June. Their frequency also depended on needle age, as well as whether the needles remained on shoots or fell on the litter. In the area under investigation M. pini frequently produced microconidia, while the ascospores were observed only sporadically (on 2 needles). Various detailed aspects concerning the symptomatology and epidemiology of red band disease caused by M. pini are also discussed.
@article{kowalskiFirstRecordDothistroma1998,
  title = {First Record of {{Dothistroma}} Septospora ({{Dorog}}.) {{Morelet}} in {{Poland}}: A Contribution to the Symptomatology and Epidemiology},
  author = {Kowalski, T. and Jankowiak, R.},
  date = {1998},
  journaltitle = {Phytopathologia Polonica},
  volume = {16},
  pages = {15--29},
  issn = {1230-0462},
  url = {http://www.cabdirect.org/abstracts/19991001930.html},
  abstract = {Investigations were carried out in the Miechów Forest District (20 km north of Kraków, Poland) where, in May 1990, D. septospora [Mycosphaerella pini] was observed on Pinus nigra for the first time in Poland. The disease symptoms were analysed, the fungi were isolated from needles exhibiting varying stages of disease, and the time of the occurrence of ripe spores was determined. Red transverse bands present on the attacked, prematurely dying needles were among the most characteristic symptoms. The intensity of this disease varied on individual trees and depended, among other things, on the age of the needles, their location in the crown, and age of the tree. It also varied in individual years during the study period 1990-1997. Over 30 species of fungi were isolated from infected needles. It turned out that even from needle fragments with typical symptoms of red band disease it was difficult to isolate M. pini, a proper causal agency of this disease. Great differences in size of the macroconidia were found, depending on whether they were produced in vivo or in vitro. The macroconidia occurred on attacked and dead needles of P. nigra during an entire growing season. They were most abundant during the period from May to July with a distinct peak in June. Their frequency also depended on needle age, as well as whether the needles remained on shoots or fell on the litter. In the area under investigation M. pini frequently produced microconidia, while the ascospores were observed only sporadically (on 2 needles). Various detailed aspects concerning the symptomatology and epidemiology of red band disease caused by M. pini are also discussed.},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13826940,forest-pests,forest-resources,mycosphaerella-pini,pinus-nigra,poland}
}
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