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A PCR-based Genotyping Method to Distinguish Between Wild-type and Ornamental Varieties of Imperata cylindrica

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The genus Cyclidiopsis: an obituary.

Matthew S Bennett¹, Richard E Triemer

¹Department of Plant Biology, Michigan State University, 612 Wilson Rd, Room# 166 Plant Biology Labs, East Lansing, MI, 48824, USA.

The Journal of Eukaryotic Microbiology

|December 12, 2013

Summary

The genus Cyclidiopsis is invalid. Phylogenetic analysis of Euglenid DNA shows Cyclidiopsis species belong to the genus Lepocinclis, necessitating taxonomic revisions for these algae.

Keywords:

Cyclidiopsis acus Lepocinclis multiple displacement amplification

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Area of Science:

Protistology
Phycology
Eukaryotic Taxonomy

Background:

The taxonomic status of the genus Cyclidiopsis has been debated since its establishment in 1917.
Previous classifications have suggested Cyclidiopsis is a subgenus of Astasia or should be dissolved entirely.

Purpose of the Study:

To resolve the taxonomic uncertainty surrounding the genus Cyclidiopsis.
To determine the phylogenetic placement of Cyclidiopsis acus, the type species.

Main Methods:

Sequencing of small subunit and large subunit ribosomal DNA from Cyclidiopsis acus.
Phylogenetic analyses using molecular data.
Extensive literature review and morphological examination of described taxa.

Main Results:

Phylogenetic analyses placed Cyclidiopsis acus within the genus Lepocinclis.
Cyclidiopsis acus was reclassified as Lepocinclis cyclidiopsis nom. nov.
Two other Cyclidiopsis taxa were moved to Lepocinclis, becoming L. crescentia comb. nov. and L. pseudomermis comb. nov.
Morphological characters defining Cyclidiopsis were found to be invalid.

Conclusions:

The genus Cyclidiopsis is considered invalid based on molecular phylogenetic evidence.
The type species and other valid taxa previously assigned to Cyclidiopsis are now placed within the genus Lepocinclis.
This taxonomic revision clarifies the evolutionary relationships within the Euglenids.