<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Phytopathogenic fungi induced considerable economic losses in strawberry production industry; therefore, more attention should be paid to development and implementation of preventative treatment that is environmentally friendly. Coniferous trees produce a wide variety of compounds, such as terpenoids and phenolics. Several studies are known on fungicidal activity of different components of coniferous tree bark. The aim of this study was to evaluate <italic>in vitro</italic> pine (<italic>Pinus sylvestris</italic> L.) and spruce (<italic>Picea abies</italic> (L.) Karst.) bark ethanol extracts impact on pathogenous fungi causing diseases of strawberries. Products of processed pine (<italic>Pinus sylvestris</italic>) and spruce (<italic>Picea abies</italic>) bark were tested. During 2011 to 2013, several <italic>in vitro</italic> experiments were carried out to test the effectiveness of pine and spruce bark extracts against various phytopathogenic fungi isolated from strawberries: <italic>Botrytis cinerea, Colletotrichum acutatum, Phytophthora cactorum</italic> and <italic>Mycosphaerella fragariae.</italic> Radial growth tests showed that coniferous bark extracts inhibit mycelial growth of <italic>B. cinerea, C. acutatum, P. cactorum</italic> and <italic>M. fragariae</italic>. Extracts had the highest antifungal effect on <italic>B. cinerea</italic> two and five days after inoculation (<italic>p</italic> &lt; 0.05). Bark extracts can reduce the sporulation of <italic>B. cinerea, C. acutatum</italic> and <italic>P. cactorum.</italic></p></abstract>

Phytopathogenic fungi induced considerable economic losses in strawberry production industry; therefore, more attention should be paid to development and implementation of preventative treatment that is environmentally friendly. Coniferous trees produce a wide variety of compounds, such as terpenoids and phenolics. Several studies are known on fungicidal activity of different components of coniferous tree bark. The aim of this study was to evaluate in vitro pine (Pinus sylvestris L.) and spruce (Picea abies (L.) Karst.) bark ethanol extracts impact on pathogenous fungi causing diseases of strawberries. Products of processed pine (Pinus sylvestris) and spruce (Picea abies) bark were tested. During 2011 to 2013, several in vitro experiments were carried out to test the effectiveness of pine and spruce bark extracts against various phytopathogenic fungi isolated from strawberries: Botrytis cinerea, Colletotrichum acutatum, Phytophthora cactorum and Mycosphaerella fragariae. Radial growth tests showed that coniferous bark extracts inhibit mycelial growth of B. cinerea, C. acutatum, P. cactorum and M. fragariae. Extracts had the highest antifungal effect on B. cinerea two and five days after inoculation (p < 0.05). Bark extracts can reduce the sporulation of B. cinerea, C. acutatum and P. cactorum.

Impact Of Pine (<italic>Pinus sylvestris</italic> L.) And Spruce (<italic>Picea abies</italic> (L.) Karst.) Bark Extracts On Important Strawberry Pathogens

Institute of Biology of University of Latvia, Miera iela 3, Salaspils, LV-2169, LATVIA

Latvian Forest Research Institute “Silava”, Rīgas iela 111, Salaspils, LV-2169, LATVIA

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Impact Of Pine ( L.) And Spruce ( (L.) Karst.) Bark Extracts On Important Strawberry Pathogens

Phytopathogenic fungi induced considerable economic losses in strawberry production industry; therefore, more attention should be paid to development and...

Impact Of Pine (Pinus sylvestris L.) And Spruce (Picea abies (L.) Karst.) Bark Extracts On Important Strawberry Pathogens

Published Online: Jul 14, 2015

Page range: 62 - 67

Received: Dec 12, 2013

DOI: https://doi.org/10.1515/prolas-2015-0008

Keywords
inhibition of mycelial growth, inhibition of sporulation

© Sandra Minova et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Impact Of Pine (Pinus sylvestris L.) And Spruce (Picea abies (L.) Karst.) Bark Extracts On Important Strawberry Pathogens

Published Online: Jul 14, 2015

Page range: 62 - 67

Received: Dec 12, 2013

DOI: https://doi.org/10.1515/prolas-2015-0008

Keywordsinhibition of mycelial growth, inhibition of sporulation

© Sandra Minova et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
inhibition of mycelial growth, inhibition of sporulation