Geographical cline of DNA variation within the F intersterility group of Heterobasidion annosum in Italy
| Autor: | K. Kammiovirta, Kari Korhonen, Reijo Karjalainen, Paolo Capretti, N. La Porta |
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| Rok vydání: | 1997 |
| Předmět: |
0106 biological sciences
0303 health sciences biology UPGMA Heterobasidion annosum Population genetics Zoology Plant Science Cline (biology) Horticulture biology.organism_classification 01 natural sciences Genetic analysis RAPD 03 medical and health sciences Botany Genetic variation Genetics Genetic variability Agronomy and Crop Science 030304 developmental biology 010606 plant biology & botany |
| Zdroj: | Plant Pathology. 46:773-784 |
| ISSN: | 1365-3059 0032-0862 |
| Popis: | Eighty-six Heterobasidion annosum isolates, mainly belonging to the F intersterility group and obtained from 32 different geographical localities in Italy, were subjected to genetic analysis by the Random Amplified Polymorphic DNA (RAPD) markers. The similarity between F and S groups was higher than that between F and P. In UPGMA Cluster Analysis, the F isolates originating from the same locality usually grouped in the same cluster. The isolates also showed a tendency to group at the level of larger geographical areas. Within the F group, isolates from the south of the Italian peninsula showed the highest genetic variation and northern isolates from the Alpine regions showed the lowest. This indicates a gradual cline along the peninsula. The genetic variability in the Italian F group is discussed in relation to the past and present distribution of the host species in Italy and Europe. |
| Databáze: | OpenAIRE |
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