Villa NO, Kageyama K, Asano T, Suga H (2006) Phylo-
genetic relationships of Pythium and Phy-
tophthora species based on ITS, rDNA,
cytochrome oxidase II and b-tubulin gene
sequences. Mycologia 98:410–422
Vlk W (1939) U ̈ber die Geisselstruktur der Saprolegnia-
ceenschwa ̈rmer. Arch Protistenkd 92:157–160
Vogel HJ (1964) Distribution of lysine pathaways
among fungi: evolutionary implications. Am Nat
98:435–446
Voglmayer H, Riethmu ̈ller A (2006) Phylogenetic rela-
tionships ofAlbugospecies (white blister rusts)
based on LSU rDNA sequence and oospore data.
Mycol Res 110:75–85
Voglmayr H (2003) Phylogenetic study ofPeronospora
and related genera based on nuclear ribosomal ITS
sequences. Mycol Res 107:1132–1142
Voglmayr H (2008) Progress and challenges in system-
atics of downy mildews and white blister rusts:
new insights from genes and morphology. Eur J
Plant Pathol 122:3–18
Voglmayr H, Constantinescu O (2008) Revision and
reclassification of threePlasmoparaspecies based
on morphological and molecular phylogenetic
data. Mycol Res 112:487–501
Voglmayr H, Thines M (2007) Phylogenetic relation-
ships and nomenclature of Bremiella sphaeros-
perma (Chromista, Peronosporales). Mycotaxon
100:11–20
Voglmayr H, Bonner L, Dick MW (1999) Taxonomy and
oogonial ultrastructure of a new aero-aquatic per-
onosporomycete,Medusoidesgen nov. (Pythioge-
tonaceae fam nov). Mycol Res 103:591–606
Voglmayr H, Riethmu ̈ller A, Go ̈ker M, Weiss M, Ober-
winkler F (2004) Phylogenetic relationships of
Plasmopara, Bremia and other genera of downy
mildews with pyriform haustoria based on Bayes-
ian analysis of partial LSU rDNA sequence data.
Mycol Res 108:1011–1024
Watanabe T (1987)Plectospira myriandra, a rediscovered
water mold in Japanese soil. Mycologia 79:77–81
Waterhouse GM (1970) The genusPhytophthorade
Bary: Diagnoses (or descriptions) and figures
from the original papers, 2nd edn. Mycological
Papers 122:1–59
Waterhouse GM (1973) Peronosporales. In: Ainsworth
GC, Sparrow FK, Sussman AS (eds) The fungi, vol
IVb. Academic, New York, pp 165–183
Wavra S, Bain J, Durward E, Bruijn ID, Minor KL et al
(2012) Host-targeting protein 1 (SpHtp1) from the
oomycete Saprolegnia parasitica translocates
specifically into fish cells in a tyrosine-O-
sulphate-dependent manner. Proc Natl Acad Sci
USA 109:2096–2101
Webster J (1970) Introduction to fungi. Cambridge
University Press, Cambridge
Weston WH, Uppal BN (1932) The basis ofSclerospora
sorghias a species. Phytopathology 22:573–586
Whisson SC, Avrova A, Grenville-Briggs L, van West P
(2009) Mechanisms and applications of gene
silencing in oomycetes. In: Lamour K, Kamoun S
(eds) Oomycete genetics and genomics: diversity,
interactions and research tools. Wiley, New York,
pp 493–515
Willoughby LG (1962) The occurrence of reproductive
spores of Saprolegniaceae in freshwater. J Ecol
50:733–759
Willoughby LG, Roberts RJ (1991) Occurrence of the
sewage fungusLeptomitus lacteus, a necrotroph on
perch (Perca fluviatilis), in Windermere. Mycol
Res 95:755–768
Worden AZ, Not F (2008) Ecology and diversity of
piceukaryotes. In: Kirchman DL (ed) Microbial
ecology of the oceans, 2nd edn. Wiley, New York,
pp 159–205
Wynn AR, Epton HAS (1979) Parasitism of oospores of
thePhytophthora erythrosepticain soil. Trans Br
Mycol Soc 73:255–259
Yokoyama R, Honda D (2007) Taxonomic rearrange-
ment of the genus Schizochytrium sensu lato
based on morphology, chemotaxonomical charac-
teristics, and 18S rRNA gene phylogeny (Thrausto-
chytriaceae, Labyrinthulomycetes): emendation for
Schizochytriumand erection ofAurantiochytrium
andOblongichytriumgen nov. Mycoscience 48:199–
211
Yokoyama R, Salleh B, Honda D (2007) Taxonomic
rearrangement of the genusUlkeniasensu lato
based on morphology, chemotaxonomical charac-
teristics, and 18S rRNA gene phylogeny (Thraus-
tochytriaceae, Labyrinthulomycetes): emendation
forUlkeniaand erection ofBotrychytrium,Parie-
tichytrium, and Sicyoidochytrium gen. nov.
Mycoscience 48:329–341
Yubuki N, Leander BS, Silberan JD (2010) Ultrastruc-
ture and molecular phylogenetic position of a
novel phagotrophic position of a novel phago-
trophic stramenopile from low oxygen environ-
ments: Rictus lutensis gen. et sp. nov.
(Biocosoecida, incertae sedis). Protist 161:264–278
Systematics of the Straminipila: Labyrinthulomycota, Hyphochytriomycota, and Oomycota 97