Back to Search
Start Over
Revisiting Stagonosporopsis species associated with chrysanthemum and pyrethrum ray blight
- Source :
- Australasian Plant Pathology. 45:561-570
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- Ray blight is a destructive disease of Asteraceae affecting chrysanthemum and pyrethrum industries worldwide. Three morphologically similar but phylogenetically distinct species of the family Didymellaceae; Stagonosporopsis chrysanthemi, S. inoxydabilis and S. tanaceti are associated with the disease. Despite their close evolutionary relationship and cross host pathogenicity, these species have marked differences in their biology and epidemiology. Stagonosporopsis chrysanthemi and S. inoxydabilis are both homothallic with a MAT locus that carries both mating type genes. Ascomata play a major role in survival and dispersal of S. chrysanthemi, contributing to the onset of ray blight epidemics on chrysanthemum. However, S. tanaceti is either asexual or heterothallic due to the presence of only MAT1-2 idiomorph in its genome. Morphological similarity of the species causing ray blight on various Asteraceae, multiple changes in their taxonomy and historical confusion with other Phoma-like species have resulted in lack of clarity in their taxonomy, host range and global distribution. Host specificity studies and reports on global distribution of S. chrysanthemi published before its separation from S. inoxydabilis should be treated with caution. A recently developed species-specific multiplex PCR assay provides a rapid and robust tool to study the global distribution of these important quarantine pathogens. When global populations from cultivated and/or wild Asteraceae are available, population genetic analyses may aid in understanding the origin, evolutionary history and global migration patterns of the Stagonosporopsis spp. associated with ray blight of Asteraceae.
- Subjects :
- 0106 biological sciences
0301 basic medicine
education.field_of_study
Host (biology)
Pyrethrum
Population
Plant Science
Biology
biology.organism_classification
01 natural sciences
03 medical and health sciences
030104 developmental biology
Botany
Stagonosporopsis
Biological dispersal
Blight
Didymellaceae
Heterothallic
education
010606 plant biology & botany
Subjects
Details
- ISSN :
- 14486032 and 08153191
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- Australasian Plant Pathology
- Accession number :
- edsair.doi...........8fb25d06aeb900aabeedd4555e8691e5