Endophytic fungi in needles of Pinus nigra growing under different site conditions
Tadeusz Kowalski | Paweł Zych
anglais. Endophytic fungi in symptomless needles of Pinus nigra Arn. were studied in three stands differing in intensity of pollution by industrial emissions. A total 565 colonies of fungi belonging to 40 taxa were isolated from 1728 needle segments. The following fungi occurred most frequently: Anthostomella formosa Kirschst., A. pedemontana Ferr. & Sacc., Cenangium ferruginosum Fr.: Fr., Cladosporium cladosporioides (Fresen.) N. F. de Vries, Cyclaneusma minus (Butin) DiCosmo, Peredo & Minter, Lophodermium pinastri (Schrad. & J. M. Hook) Chev., L. seditiosum Minter, Staley & Millar, Sclerophoma pythiophila (Corda) Höhn. and Verticicladium trifidum Preuss. The frequency of latent infection depended on needle age, needle portion and position in the tree crown. Local site conditions affected the infection frequency as well. There was a distinct reduction in the qualitative and quantitative composition of the endophytic community in a zone heavily polluted by industrial emissions. Endophytes of Pinus nigra are compared with a community of fungi infecting symptomless needles of Pinus sylvestris L. growing in the vicinity.
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