recently, tan spot disease of wheat caused by pyrenophora tritici-repentis(died.) drechsler has become very important disease in northern parts of iran and causes severe yield loss. although the anamorph of the fungus has been reported previously on infected leaves from mazandaran province (forotan et al., 1995), but there is no report on mass production of conidia in laboratory and the teleomo...

Pyrenophora tritici-repentis, the causal agent of tan spot disease of wheat, mediates disease by the production of host-selective toxins (HST). The known toxins are recognized in an 'inverse' gene-for-gene manner, where each is perceived by the product of a unique locus in the host and recognition leads to disease susceptibility. Given the importance of HSTs in disease development, we would pre...