Abstract
The genetic variability of 22 Italian isolates of Heterobasidion annosum belonging to intersterility group (ISG) P was studied by using the M13 minisatellite, as marker, in PCR experiments. Phylogenetic dendrogram constructed with the UPGMA method clearly differentiated the P group isolates from F and S ones, used for comparison. Within the tested population, P isolates related by the same geographical origin tend to form separated clusters. A stronger differentiation was observed in this Italian P population than in other European P populations previously studied with the same methods. The observed stronger genetic differentiation may be related to a more marked differentiation in host populations, considering that Italy was a refugee area during glaciation and a differentiation centre after. Also the specific morphology of Italy may not allow the genetic flow between the pathogen populations of different areas. Further investigations are needed to relate the genetic differentiation with isolates virulence.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.