Journal of General Plant Pathology (2014) 80, 109-122
From Pestinfo-Wiki
 | Selected publication you are invited to contribute to the discussion section (above tab) |
Alternaria host-selective toxins: determinant factors of plant disease
Journal of General Plant Pathology 80 (2), 109-122
Abstract: Seven diseases caused by pathotypes of Alternaria alternata, which produced host-selective toxins (HSTs), a diverse group of low-molecular-weight secondary metabolites, are known, and each HST has an essential role as a determinant of pathogenicity in all interactions between the plant host and A. alternata. Although these HST-producing pathotypes are morphologically indistinguishable, each has a distinct host range and can be distinguished by its specificity on the respective host plant, hence their designation as pathotypes of A. alternata. In 1933, Tanaka made the first discovery of a HST; fungus-free culture filtrates of A. kikuchiana (now called A. alternata Japanese pear pathotype) were toxic to susceptible cultivar Nijisseiki, but not to resistant cultivars. Over the 80 years since then, the structure of HST molecules, target sites and mode of actions of HSTs, and the molecular genetics of HST production regulating by supernumerary chromosomes encoding HST gene clusters have been studied extensively. We focus this review on studies of low-molecular-weight HSTs produced by A. alternata and give an overview of various types of HST studies.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Research topic(s) for pests/diseases/weeds:
molecular biology - genes
general biology - morphology - evolution
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant. |
|---|---|---|---|---|
| Alternaria citri | ||||
| Alternaria alternata | ||||
| Alternaria kikuchiana | Pear (Pyrus) |
