Genetic variation, occurrence of mating types and different forms of Pyrenophora teres causing net blotch of barley in Finland

Prochloraz tolerance of Pyrenophora teres population in Finland

“…P. teres survives over the winter in infected stubble (Jordan 1981) and Finnish P. teres populations seem to be genetically differentiated between fields (Serenius et al 2005). At least one of the farmers' fields had barley cultivation before the study year, while another field was not ploughed before barley was sown.…”

Pyrenophora tritici-repentis, Causal Agent of Tan Spot: A Review of Intraspecific Genetic Diversity

“…The P. teres isolates obtained from Italy showed two MAT genes (1:1), suggesting that the sexual reproduction is the major influence in the population structure. On other hand, Serenius et al, (2005) observed a high variability between regions suggesting that the sexual reproduction occurs but its influence on the population structure is relative, and may be based in environmental differences. The taxonomic status of formae speciales of P. teres was proposed for reconsideration by Rau et al, (2005).…”

“…The taxonomic status of formae speciales of P. teres was proposed for reconsideration by Rau et al, (2005). A similar study of Rau et al, (2005) and Serenius et al, (2005) was developed by Lepoint et al, (2010) with isolates of P. tritici-repentis obtained from naturally infected leaves since 1980s in wheat-growing areas worldwide. They showed that all isolates amplified to MAT gene and they highlighted some points: a) the organization of MAT gene the MAT1-1 gene is followed by the MAT1-2 gene, with both ORFs transcribed left to right; b) some strains presented one fragment as insertion between primer PtrPLP5 and PtrPLP6 (Lepoint et al, 2010) in a variable region; c) some strains of P. tritici-repentis revealed a nonspecific profile with the primer par PtMat_fw (Rau et al, 2005) and PtrPLP2 (Lepoint et al, 2010).…”

“…The study of genetic diversity through of the mating type genes (MAT) allowed to clarify the population genetic structure of some plant pathogens fungi and provided the opportunity to evidence the sexuality reproduction in several fungi (Bennett et al, 2003;Lepoint et al, 2005Lepoint et al, , 2010Rau et al, 2005;Serenius et al, 2005).…”

“…The mating-type genes of P. teres have been studied by different researchs (Rau et al, 2005;Serenius et al, 2005). The P. teres isolates obtained from Italy showed two MAT genes (1:1), suggesting that the sexual reproduction is the major influence in the population structure.…”