Skip to main content
padlock icon - secure page this page is secure

Phylogenetic position of Phlyctochytrium planicorne (Chytridiales, Chytridiomycota) based on zoospore ultrastructure and partial nuclear LSU rRNA gene sequence analysis

Buy Article:

$39.00 + tax (Refund Policy)

The genus Phlyctochytrium (Chytridiales, Chytridiomycota) is an assemblage of approximately 70 described taxa that exhibit morphological, ultrastructural, and molecular diversity. Although the type species Phlyctochytrium hydrodictyi is not available for study, a similar taxon, Phlyctochytrium planicorne, has been brought into pure culture. Like the type, P. planicorne is an apophysate algal parasite. In this study zoospore ultrastructure and nuclear large subunit ribosomal RNA gene sequences are used to infer the phylogenetic position of P. planicorne among the Chytridiales. This is the first use of a Phlyctochytrium in a molecular phylogeny and the first Phlyctochytrium to exhibit the zoospore type herein described. The chytridialean zoospore of P. planicorne contains a rumposome, a bundle of 5-7 microtubules in a microtubular root connecting the rumposome to the kinetosome, an electron-opaque saddle over the kinetosome, an electronopaque plug in the base of the flagellar axoneme, and a paracrystalline inclusion in the peripheral cytoplasm; in these features it is similar to the zoospore described for Chytridium lagenaria. In a parsimony analysis, Phlyctochytrium planicorne is nested as a lone taxon in a polytomy including the Lacustromyces, Nowakowskiella, and Rhizophydium clades. Because there are so many species of Phlyctochytrium for which the ultrastructure and molecular characters are unknown, further studies are necessary to determine whether the genus as described is monophyletic.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: CHYTRID; LARGE SUBUNIT RRNA GENE; PHYLOGENY; ZOOSPORE

Document Type: Research Article

Publication date: February 1, 2005

More about this publication?
  • Nova Hedwigia is an international journal publishing original, peer-reviewed papers on current issues of taxonomy, morphology, ultrastructure and ecology of all groups of cryptogamic plants, including cyanophytes/cyanobacteria and fungi. The half-tone plates in Nova Hedwigia are known for their high quality, which makes them especially suitable for the reproduction of photomicrographs and scanning and transmission electron micrographs.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more