RIPing in an asexual fungus

ResearchBlogging.orgA.niger conidiophoreA paper in Current Genetics describes the discovery of Repeat Induced Polymorphism (RIP) in two Euriotiales fungi.  RIP has been extensively studied in Neurospora crassa and has been identified in other Sordariomycete fungi Magnaporthe, Fusiarium. This is not the first Aspergillus species to have RIP described as it was demonstrated in the biotech workhorse Aspergillus oryzae.  However, I think this study is the first to describe RIP in a putatively asexual fungus.  The evidence for RIP is only found in transposon sequences in the Aspergillus and Penicillium.  A really interesting aspect of this discovery is RIP is thought to only occur during sexual stage, but a sexual state has never been observed for these fungi.   Continue reading RIPing in an asexual fungus