Canadian Journal of Microbiology - Revue Canadienne de Microbiologie (2006) 52, 673-680
T.S. Murali, T.S. Suryanarayanan and R. Geeta (2006)
Endophytic Phomopsis species: host range and implications for diversity estimates
Canadian Journal of Microbiology - Revue Canadienne de Microbiologie 52 (7), 673-680
Abstract: Foliar endophyte assemblages of teak trees growing in dry deciduous and moist deciduous forests of Nilgiri Biosphere Reserve were compared. A species of Phomopsis dominated the endophyte assemblages of teak, irrespective of the location of the host trees. Internal transcribed spacer sequence analysis of 11 different Phomopsis isolates (ten from teak and one from Cassia fistula) showed that they fall into two groups, which are separated by a relatively long branch that is strongly supported. The results showed that this fungus is not host restricted and that it continues to survive as a saprotroph in teak leaf, possibly by exploiting senescent leaves as well as the litter. Although the endophyte assemblage of a teak tree growing about 500 km from the forests was also dominated by a Phomopsis sp., it separated into a different group based on internal transcribed spacer sequence analysis. Our results with an endophytic Phomopsis sp. reinforce the earlier conclusions reached by others for pathogenic Phomopsis sp., i.e., that this fungus is not host specific, and the species concept of Phomopsis needs to be redefined.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: English)
Link to article at publishers website
Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
identification/taxonomy
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Diaporthe phaseolorum | ||||
| Diaporthe ampelina | ||||
| Diaporthe helianthi | ||||
| Diaporthe amygdali | ||||
| Diaporthe rudis | ||||
| Diaporthe sojae | ||||
| Diaporthe vitimegaspora | ||||
| Diaporthe ambigua | ||||
| Phomopsis asparagi | ||||
| Phomopsis quercina | ||||
| Diaporthe sclerotioides |
