Fungal communities associated with pitch canker disease ofPinus radiatacaused byFusarium circinatumin northern Spain: association with insects and pathogen-saprophyte antagonistic interactions
| Autor: | Arturo Goldarazena, A. Eguzkitza, Juan Carlos Iturrondobeitia, M. Troya, M. E. Fernández de Gamarra, Pedro Romón |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Canadian Journal of Plant Pathology. 30:241-253 |
| ISSN: | 1715-2992 0706-0661 |
| DOI: | 10.1080/07060661.2008.10540539 |
| Popis: | Association of phloeophagous insects colonizing Pinus radiata in northern Spain with Hypocreales fungi was determined by selective isolation and ITS1-5.8S-ITS2 and histone H3 gene sequencing. The general microbiota consisted of 11 species and was dominated by Fusarium circinatum. Among isolated fungi, Fusarium verticillioides, Fusarium culmorum, Fusarium proliferatum, and Fusarium oxysporum can cause seedling damping-off, whereas Fusarium lateritium is not pathogenic and, thus, was selected together with Penicillium chrysogenum, the second dominant species in aerial wood, for studying their biocontrol capabilities. Replacement series and primary resource capture assays indicated that P. chrysogenum outcompeted F. circinatum. In contrast, in secondary resource capture when F. circinatum appeared later in succession, both P. chrysogenum and F. lateritium completely inhibited its growth; there were no differences between the substrate occupied by both saprophytes. Testing these in vitro generated re... |
| Databáze: | OpenAIRE |
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