NDLI: Molecular Phylogeny and Cryptic Diversity of the Genus Phacus (Phacaceae, Euglenophyceae) and the Descriptions of Seven New Species.

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Molecular Phylogeny and Cryptic Diversity of the Genus Phacus (Phacaceae, Euglenophyceae) and the Descriptions of Seven New Species.

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Molecular Phylogeny and Cryptic Diversity of the Genus Phacus (Phacaceae, Euglenophyceae) and the Descriptions of Seven New Species.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Kim, Jong Im Shin, Woongghi
Description	Author Affiliation: Kim JI ( Department of Biology, Chungnam National University, Daejeon, 305-764, Korea.); Shin W ( Department of Biology, Chungnam National University, Daejeon, 305-764, Korea.)
Abstract	The photosynthetic euglenoid genus Phacus is commonly found in freshwater; it is characterized by a rigid to semi-rigid cell, usually flat with numerous small discoid chloroplasts without pyrenoids. To understand the phylogenetic relationships among Phacus species, we used combined cytoplasmic SSU and LSU rDNA and plastid-encoded SSU and LSU rDNA sequence data from 82 strains, including seven Lepocinclis, three Discoplastis, one Eutreptia, and two Eutreptiella strains, as well as morphological data. The combined molecular dataset was analyzed using Bayesian and maximum likelihood methods. The resulting tree revealed that the genus Phacus was not monophyletic and fully resolved the phylogenetic relationships among eight lineages that were congruent with unique morphological characters in each clade. Molecular phylogeny and detailed morphological data led to the descriptions of seven new species: P. brevisulca, P. claviformis, P. hordei-formis, P. longisulca, P. minimus, P. paraorbicularis, and P. viridioryza. The new species were well supported as independent species and formed close relationships with small Phacus species and P. orbicularis in the tree. In addition, the new species had unique molecular signatures and showed high genetic diversity. Although the strains of P. orbicularis sensu Hübner were morphologically very similar, the phylogenetic analyses and genetic diversity suggested that P. orbicularis sensu Hübner should be divided into two subclades.
File Format	HTM / HTML
ISSN	00223646
Issue Number	5
Journal	Journal of Phycology
Volume Number	50
e-ISSN	15298817
Language	English
Publisher	Wiley
Publisher Date	2014-10-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Botany
Content Type	Text
Resource Type	Article
Subject	Plant Science Aquatic Science

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Molecular Phylogeny and Cryptic Diversity of the Genus Phacus (Phacaceae, Euglenophyceae) and the Descriptions of Seven New Species.

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