Fig. 1

Rhynchosporium rDNA structures. The sequences of the rDNA regions of all Rhynchosporium species were obtained by Sanger sequencing. 18S, 5.8S and 28S genes are separated by ITS1 and ITS2, respectively (grey lines). The introns (black lines) in the 18S and 28S genes of R. lolii and R. orthosporum are identical except for 1 additional nucleotide in the R. lolii 28S intron. The 28S intron of R. agropyri is highly similar to those of the CCG species (87% identity) except for 5′- and 3′-terminal extensions of 99 and 87 bp, respectively