Genome characterization of Pyrenophora tritici-repentis isolates reveals high plasticity and independent chromosomal location of ToxA and ToxB.

ABSTRACT: The fungus Pyrenophora tritici-repentis (Died.) causes tan spot, an important leaf disease of wheat worldwide. Isolates of this pathogen have been collected and characterized into eight races on the basis of their ability to produce three different host-selective toxins. The karyotype of 47 isolates was determined by pulsed field gel electrophoresis. The collection originated from different parts of the world and included genotypes from all races. A single isolate was characterized for each of races 3, 4 and 6, whereas fourteen, five, nine, five and eleven isolates were karyotyped for races 1, 2, 5, 7 and 8, respectively. The survey showed that the chromosome number of P. tritici-repentis was highly variable, with some isolates having as few as eight chromosomes, but others having 11 or mo

SUBMITTER: Aboukhaddour R 

PROVIDER: S-EPMC6640439 | biostudies-literature | 2009 Mar

REPOSITORIES: biostudies-literature