TY - JOUR
T1 - Phylogenetic positions of rust fungi parasitic on ferns
T2 - Evidence from 18S rDNA sequence analysis
AU - Sugiyama, Junta
AU - Sjamsuridzal, Wellyzar
PY - 1999/2/15
Y1 - 1999/2/15
N2 - Molecular phylogenetic analyses of fern rusts were carried out based on 18S rDNA sequences. We sequenced the 18S rDNAs of fern rusts (Hyalopsora polypodii and Uredinopsis intermedia) and non-fern rusts (Aecidium epimedii, Coleosporium asterum, Ochropsora kraunhiae, Puccinia suzutake and Physopella ampelopsidis) and analyzed their phylogenetic relationships with other members of the Urediniomycetes. Our bootstrapped neighbor-joining tree obtained from these analyses showed that rust fungi were apparently monophyletic at high confidence level (100% bootstrap confidence). In this molecular phylogenetic tree, the two fern rusts did not occupy the basal position within the rust fungal lineage and did not form a monophyletic lineage. Two species of the Cronartiaceae (Peridermium harknessii, Cronartium ribicola) and one species of the Coleosporiaceae (Coleosporium asterum) grouped with the fern rusts. Therefore, our results suggested that the two fern rusts were not primitive. On the other hand, Mixia osmundae, which is parasitic on the primitive fern Osmunda, was phylogenetically far from the fern rusts.
AB - Molecular phylogenetic analyses of fern rusts were carried out based on 18S rDNA sequences. We sequenced the 18S rDNAs of fern rusts (Hyalopsora polypodii and Uredinopsis intermedia) and non-fern rusts (Aecidium epimedii, Coleosporium asterum, Ochropsora kraunhiae, Puccinia suzutake and Physopella ampelopsidis) and analyzed their phylogenetic relationships with other members of the Urediniomycetes. Our bootstrapped neighbor-joining tree obtained from these analyses showed that rust fungi were apparently monophyletic at high confidence level (100% bootstrap confidence). In this molecular phylogenetic tree, the two fern rusts did not occupy the basal position within the rust fungal lineage and did not form a monophyletic lineage. Two species of the Cronartiaceae (Peridermium harknessii, Cronartium ribicola) and one species of the Coleosporiaceae (Coleosporium asterum) grouped with the fern rusts. Therefore, our results suggested that the two fern rusts were not primitive. On the other hand, Mixia osmundae, which is parasitic on the primitive fern Osmunda, was phylogenetically far from the fern rusts.
KW - 18S rDNA
KW - Fern parasites
KW - Molecular phylogenetics
KW - Rust fungi
KW - Urediniomycetes
UR - http://www.scopus.com/inward/record.url?scp=0033557594&partnerID=8YFLogxK
U2 - 10.1007/bf02465669
DO - 10.1007/bf02465669
M3 - Article
AN - SCOPUS:0033557594
VL - 40
SP - 21
EP - 27
JO - Mycoscience
JF - Mycoscience
SN - 1340-3540
IS - 1
ER -