Under Construction

Rhodomonas | Rhinomonas | Storeatula

Kerstin Hoef-Emden and John M. Archibald
Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window
Containing group: Cryptomonads



Discussion of Phylogenetic Relationships

A mixture of genera with different periplast types across the tree provides evidence for dimorphism in this cryptophyte group (Figure 1; Marin et al. 1998; Deane et al. 2002; Hoef-Emden et al. 2002). This is most obvious from existence of two Rhinomonas strains and Storeatula major that have almost identical DNA sequences. Therefore, this genus complex requires revision to eliminate inconsistencies.

Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window

Figure 1. Molecular phylogeny of the Rhodomonas/Rhinomonas/Storeatula genus complex. Maximum likelihood tree inferred from nuclear SSU rDNA sequences. Scale bar = substitutions per site. © 2008 Kerstin Hoef-Emden


Deane JA, Hill DRA, Brett SJ, McFadden GI (2002) Cryptomonad evolution: Nuclear 18S rDNA phylogeny versus cell morphology and pigmentation. J. Phycol. 38: 1236-1244

Hill DRA (1991a) A revised circumscription of Cryptomonas (Cryptophyceae) based on examination of Australian strains. Phycologia 30: 170-188

Hill DRA, Wetherbee R (1988) The structure and taxonomy of Rhinomonas pauca gen. et sp. nov. (Cryptophyceae). Phycologia 27: 355-365

Hill DRA, Wetherbee R (1989) A reappraisal of the genus Rhodomonas (Cryptophyceae). Phycologia 28: 143-158

Hoef-Emden K, Marin B, Melkonian M (2002) Nuclear and nucleomorph SSU rDNA phylogeny in the Cryptophyta and the evolution of cryptophyte diversity. J. Mol. Evol. 55: 161-179

Karsten G (1898) Rhodomonas baltica N. g. et sp. Wiss. Meeresunters. Abt. Kiel 3: 15

Marin B, Klingberg M, Melkonian M (1998) Phylogenetic relationships among the Cryptophyta: analyses of nuclear-encoded SSU rRNA sequences support the monophyly of extant plastid-containing lineages. Protist 149: 265-276

Title Illustrations
Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window
Scientific Name Rhodomonas salina
Location material from Provasoli-Guillard National Center for Culture of Marine Phytoplankton
Source Rhodomonas salina
Source Collection Micro*scope
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License - Version 2.5.
Copyright © Bob Andersen and D. J. Patterson
About This Page

This page is being developed as part of the Tree of Life Web Project Protist Diversity Workshop, co-sponsored by the Canadian Institute for Advanced Research (CIFAR) program in Integrated Microbial Biodiversity and the Tula Foundation.

Kerstin Hoef-Emden
Universität zu Köln, Köln, Germany

John M. Archibald
Dalhousie University, Halifax, Nova Scotia, Canada

Correspondence regarding this page should be directed to Kerstin Hoef-Emden at and John M. Archibald at

Page: Tree of Life Rhodomonas | Rhinomonas | Storeatula. Authored by Kerstin Hoef-Emden and John M. Archibald. The TEXT of this page is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

Citing this page:

Hoef-Emden, Kerstin and John M. Archibald. 2010. Rhodomonas | Rhinomonas | Storeatula. Version 02 April 2010 (under construction). http://tolweb.org/Rhodomonas_%7C_Rhinomonas_%7C_Storeatula/128540/2010.04.02 in The Tree of Life Web Project, http://tolweb.org/

edit this page
close box

This page is a Tree of Life Branch Page.

Each ToL branch page provides a synopsis of the characteristics of a group of organisms representing a branch of the Tree of Life. The major distinction between a branch and a leaf of the Tree of Life is that each branch can be further subdivided into descendent branches, that is, subgroups representing distinct genetic lineages.

For a more detailed explanation of the different ToL page types, have a look at the Structure of the Tree of Life page.

close box

Rhodomonas | Rhinomonas | Storeatula

Page Content

articles & notes



Explore Other Groups

random page

  go to the Tree of Life home page