<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>In this study, the fruit bodies (pycnidial) colonization and spore presence of <italic>Sphaeropsis sapinea</italic> (Fr.) Dyko &amp; B. Sutton on Scots pine (<italic>Pinus sylvestris</italic> L.) trees in stands affected by long-term drought in the Czech Republic were evaluated. A total of 520 cones at four sites were evaluated every 1.5 months from June 2019 to December 2020. The pycnidia of <italic>S. sapinea</italic> in relation to colonization by subcortical insects in inner bark and wood, and wood-decaying fungi a total of 340 trunks at 17 sites during the autumn of 2020 were also evaluated. Pycnidial colonization of <italic>S. sapinea</italic> on cones was significantly higher at the site with the highest air humidity and significantly lower in the sampling periods of June 2019, August 2019, and November 2019, which were characterized by low precipitation levels. <italic>S. sapinea</italic> spore presence on cones was significantly higher at sites in Bohemia compared to those in Moravia, in sites with higher air humidity, and in three consecutive sampling periods in March 2020–June 2020. Pycnidial colonization of <italic>S. sapinea</italic> on trunks was significantly positively dependent on the colonization of subcortical insects in both inner bark and wood, but not with the colonization of wood-decaying fungi. The results of this study show a positive relationship between high humidity and colonization by subcortical insects in inner bark and wood with <italic>S. sapinea</italic> on Scots pine.</p>
</abstract>

In this study, the fruit bodies (pycnidial) colonization and spore presence of Sphaeropsis sapinea (Fr.) Dyko & B. Sutton on Scots pine (Pinus sylvestris L.) trees in stands affected by long-term drought in the Czech Republic were evaluated. A total of 520 cones at four sites were evaluated every 1.5 months from June 2019 to December 2020. The pycnidia of S. sapinea in relation to colonization by subcortical insects in inner bark and wood, and wood-decaying fungi a total of 340 trunks at 17 sites during the autumn of 2020 were also evaluated. Pycnidial colonization of S. sapinea on cones was significantly higher at the site with the highest air humidity and significantly lower in the sampling periods of June 2019, August 2019, and November 2019, which were characterized by low precipitation levels. S. sapinea spore presence on cones was significantly higher at sites in Bohemia compared to those in Moravia, in sites with higher air humidity, and in three consecutive sampling periods in March 2020–June 2020. Pycnidial colonization of S. sapinea on trunks was significantly positively dependent on the colonization of subcortical insects in both inner bark and wood, but not with the colonization of wood-decaying fungi. The results of this study show a positive relationship between high humidity and colonization by subcortical insects in inner bark and wood with S. sapinea on Scots pine.

<italic>Sphaeropsis sapinea</italic> (Fr.) Dyko &amp; B. Sutton in <italic>Pinus sylvestris</italic> L. stands affected by long-term drought

Central European Forestry Journal

This work is licensed under the Creative Commons Attribution 4.0 International License.

 (Fr.) Dyko & B. Sutton in  L. stands affected by long-term drought

In this study, the fruit bodies (pycnidial) colonization and spore presence of Sphaeropsis sapinea (Fr.) Dyko & B. Sutton on Scots pine (Pinus sylvestris L.)...

Sphaeropsis sapinea (Fr.) Dyko & B. Sutton in Pinus sylvestris L. stands affected by long-term drought

Article Category: Original Paper

Published Online: Oct 21, 2022

Page range: 214 - 223

DOI: https://doi.org/10.2478/forj-2022-0010

Keywords
tip blight, fungal pathogens, Scots pine, subcortical insects, wood-decaying fungi

© 2022 František Lorenc et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Sphaeropsis sapinea (Fr.) Dyko & B. Sutton in Pinus sylvestris L. stands affected by long-term drought

Article Category: Original Paper

Published Online: Oct 21, 2022

Page range: 214 - 223

DOI: https://doi.org/10.2478/forj-2022-0010

Keywordstip blight, fungal pathogens, Scots pine, subcortical insects, wood-decaying fungi

© 2022 František Lorenc et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
tip blight, fungal pathogens, Scots pine, subcortical insects, wood-decaying fungi