Phylogenetic Relationships among Rhizophydium Isolates from North America and Australia

The growth response of some Chytridiomycota to temperatures commonly observed in the soil

“…have been reported to grow at 42 x (Nielsen 1982). The maximum temperature for growth In a molecular phylogenetic study of 29 isolates of Rhizophydium and other genera of chytrids Letcher et al (2004b) identified groupings that contained both American and Australian isolates of Rhizophydium. The isolates used in the present study represent four of these groupings : (a) AUS 3 ; (b) AUS 2, 6 and 9 ; (c) AUS 7 and 8; and (d) AUS 12.…”

Homolaphlyctis polyrhiza gen. et sp. nov., a species in the Rhizophydiales (Chytridiomycetes) with multiple rhizoidal axes

“…Only nodes receiving >60% bootstrap support are labeled. Further strain details and GenBank accession numbers can be found in James et al (2006) and Letcher et al (2004Letcher et al ( , 2008b Zoospore ultrastructure typical for members of the Rhizophydiales, consisting of stack of 2-3 separate microtubules leading from the kinetosome to a rumposome on a single lipid globule; microbody on inner side of lipid. Lacking kinetosome-associated spur and vesiculated area around kinetosome.…”

“…Phylogenetic analysis of Rhizophydiales was conducted using the initial alignments of 18S, 28S, and 5.8S rRNA subunits produced by James et al (2006). Additional sequences were added from Letcher et al (2004Letcher et al ( , 2008b, and the alignment manually adjusted in MacClade 4.08 (Maddison & Maddison 1992). The phylogeny was estimated using maximum likelihood in RAxML-7.0.4 (Stamatakis 2006) with 100 heuristic searches beginning from random trees.…”

“…The microbody is appressed to the side of the lipid globule toward the center of the zoospore (Fig. 3b), and a rumposome (= fenestrated cisterna of Letcher et al 2004) is appressed to the lipid near the surface of the cell (Fig. 3b).…”

Large genetic divergence of new, morphologically similar species of sterile lichens from Europe (Lepraria, Stereocaulaceae, Ascomycota): concordance of DNA sequence data with secondary metabolites

“…Parallel occurrence of morphological structures, as known from many fungi (e.g., Percudani et al., 1999; Redecker, 2002; Letcher et al., 2004; Stensrud et al., 2005), can obscure their classification, especially if other characters are reduced (such as meiotic structures). This is a notorious problem in anamorphic fungi, where the same morphology may belong to diverse lineages (e.g., Okada et al., 1998; Shenoy et al., 2006; Réblová and Seifert, 2007).…”