20.500.12556/DiRROS-9580
Pseudodidymella fagi in Slovenia : first report and expansion of host range
The fungus Pseudodidymella fagi is spreading in Europe and causing leaf blotch of European beech, Fagus sylvatica. Between 2008 and 2017, outbreaks of P. fagi were observed on European beech in Switzerland, Germany (also on F. orientalis), Austria, and Slovakia. In Slovenia, leaf blotch symptoms were first observed on F. sylvatica in 2018. P. fagi was identified as the causal agent of the observed symptoms in Slovenia by morphological examinations together with sequencing of the internal transcribed spacer (ITS) region of the rDNA. This study links the fungus to the expansion of the known distribution of the disease to Slovenia, and based on in vitro pathogenicity trials, also to a new potential host, Quercus petraea. The pathogenicity tests confirmed F. sylvatica and F. orientalis as hosts for P. fagi, but not Castanea sativa, where pathogenicity to F. orientalis was proved for first time in vitro. Although Koch%s postulates could not be proven for C. sativa, it seems to be partially susceptible in vitro because some of the inoculation points developed lesions. Additionally, damage to Carpinus betulus related to P. fagi near heavily infected beech trees was observed in vivo but was not tested in laboratory trials. Based on the results and our observations in the field, it is likely that P. fagi has a wider host range than previously thought and that we might be witnessing host switching.
Pycnopleiospora fagi
leaf blotch
pathogenicity test
inoculation test
Fagus orientalis
Fagus sylvatica
Quercus petraea
mycopappus-like propagule
Carpinus betulus
host switching
Pycnopleiospora fagi
rjava pegavost bukovih listov
test patogenosti
inokulacija
Fagus orientalis
Fagus sylvatica
Quercus petraea
Carpinus betulus
zamenjava gostitelja
vzhodna bukev
graden
hrast
beli gaber
domači kostanj
true
false
true
Angleški jezik
Ni določen
Neznano
2019-08-23 11:01:53
2019-08-23 11:03:13
2022-08-15 03:33:22
0000-00-00 00:00:00
2019
0
0
Nasl. iz nasl. zaslona;
Opis vira z dne 22. 8. 2019;
10 str.
iss. 9
article 718
2019
0000-00-00
Zaloznikova
Objavljeno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
630*17(497.4)(045)0111
1999-4907
10.3390/f10090718
5454758
3872166
RAZ_Ogris_Nikica_i2019.pdf
RAZ_Ogris_Nikica_i2019.pdf
1
10B8A6919D2EDE2BB1D6FA94139228A3
892e1d7db429034f52cfcd57d14d93e5167834b4433f9eebd6800e6c2cd6ea10
8f8a9ce2-17b5-11ed-b6b8-001a4af901a5
https://dirros.openscience.si/Dokument.php?lang=slv&id=11540
https://www.mdpi.com/1999-4907/10/9/718
1
https://dirros.openscience.si/Dokument.php?lang=slv&id=11538
Gozdarski inštitut Slovenije
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