Fragmented environment affects birch leaf endophytes
Article first published online: 23 MAY 2007
Volume 175, Issue 3, pages 547–553, August 2007
How to Cite
Helander, M., Ahlholm, J., Sieber, T. N., Hinneri, S. and Saikkonen, K. (2007), Fragmented environment affects birch leaf endophytes. New Phytologist, 175: 547–553. doi: 10.1111/j.1469-8137.2007.02110.x
- Issue published online: 23 MAY 2007
- Article first published online: 23 MAY 2007
- Received: 5 March 2007 Accepted: 4 April 2007
- island biogeography;
- • The effect of environmental fragmentation on the species distribution and frequency of horizontally transmitted endophytic fungi in Betula pubescens and Betula pendula leaves was studied in an archipelago in southwestern Finland.
- • The study system consisted of 14 islands, ranging in size and distance to the mainland, and five mainland sites. Endophytic fungi were grown out from surface-sterilized leaves.
- • The frequency of endophytic fungi mainly depended on the size of the island, explaining 32–35% of the variation, and the distance to the mainland explaining 29–35% of the variation. The birch trees on the largest islands near the mainland had the highest endophyte frequencies. Fusicladium betulae, Gnomonia setacea and Melanconium betulinum were the most commonly isolated fungi.
- • Foliar endophytes of birch trees are able to disperse to fairly fragmented areas, but their frequencies seem to depend on environmental isolation and size of the island.