scholarly journals Expanded Taxonomic Sampling Coupled with Gene Genealogy Interrogation Provides Unambiguous Resolution for the Evolutionary Root of Angiosperms

2017 ◽  
Vol 9 (11) ◽  
pp. 3154-3161 ◽  
Author(s):  
Bojian Zhong ◽  
Ricardo Betancur-R
Keyword(s):  
Gene Genealogy ◽  
Taxonomic Sampling ◽  
Evolutionary Root

Comparative gene genealogical analyses of strains of serotype AD identify recombination in populations of serotypes A and D in the human pathogenic yeast Cryptococcus neoformans

Microbiology ◽  
2003 ◽  
Vol 149 (8) ◽  
pp. 2147-2154 ◽  
Author(s):  
Jianping Xu ◽  
Thomas G. Mitchell
Keyword(s):  
Monoclonal Antibodies ◽  
Cryptococcus Neoformans ◽  
Natural Populations ◽  
The Other ◽  
Pathogenic Yeast ◽  
Gene Genealogy ◽  
Serotype A ◽  
The World ◽  
Significant Divergence ◽  
Allelic Group

Cryptococcus neoformans is a major pathogen of humans throughout the world. Using commercial monoclonal antibodies to capsular epitopes, strains of C. neoformans manifest five serotypes: A, B, C, D and AD. Previous studies demonstrated significant divergence among serotypes A, B, C and D, which are typically haploid. In contrast, most strains of serotype AD are diploid or aneuploid and result from recent hybridization between strains of serotypes A and D. Whether serotypes A, B, C and D represent strictly asexual lineages is not known. Using comparative genealogical analyses of two genes, the authors investigated whether recombination occurred among strains within serotypes A and D. For each of 14 serotype AD strains, a portion (642 bp) of the orotidine monophosphate pyrophosphorylase (URA5) gene was cloned and sequenced. Each of these 14 strains contained two different alleles and sequences for both alleles were obtained. The URA5 gene genealogy was compared to that derived from the laccase (LAC) gene, which was reported recently for the same 14 strains. For both genes, each of the 14 serotype AD strains contained two phylogenetically distinct alleles: one allele was highly similar to those from serotype A strains and the other to alleles from serotype D strains. However, within both the serotype A allelic group and the serotype D allelic group, there was significant incongruence between genealogies derived from URA5 and LAC. The results suggest recombination in natural populations of both serotypes A and D.

Lichen chemistry is concordant with multilocus gene genealogy in the genus Cetrelia (Parmeliaceae, Ascomycota)

2019 ◽  
Vol 123 (2) ◽  
pp. 125-139 ◽  
Author(s):  
Kristiina Mark ◽  
Tiina Randlane ◽  
Göran Thor ◽  
Jae-Seoun Hur ◽  
Walter Obermayer ◽  
...  
Keyword(s):  
Gene Genealogy

scholarly journals Gene genealogy in a population of variable size

Heredity ◽  
1997 ◽  
Vol 78 (4) ◽  
pp. 417-423 ◽  
Author(s):  
Bruce Rannala
Keyword(s):  
Variable Size ◽  
Gene Genealogy

A multiple gene genealogy reveals the phylogenetic placement of Iodosphaeria tongrenensis sp. nov. in Iodosphaeriaceae (Xylariales)

Phytotaxa ◽  
2015 ◽  
Vol 234 (2) ◽  
pp. 121 ◽  
Author(s):  
Qirui Li ◽  
JI-CHUAN KANG ◽  
KEVIN D. HYDE
Keyword(s):  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Guizhou Province ◽  
Monotypic Genus ◽  
Multiple Gene ◽  
Gene Genealogy ◽  
Phylogenetic Placement

During collections of Sordariomycetes in Guizhou Province, China, we collected Iodosphaeria tongrenensis sp. nov.. It is unique in the genus because of its ellipsoidal ascospores (18.5–22.5 × 6.5–8.5 μm) with a slimy sheath covering the whole spore, and J+, wedge-shaped, ascal apical apparatus. Iodosphaeria is a monotypic genus in Iodosphaeriaceae and phylogenetic analyses of combined LSU, ITS and SSU sequence data indicate that it is a distinct family in the order Xylariales.

Taxonomic uncertainty of a highly endangered brook damselfly, Copera tokyoensis Asahina, 1948 (Odonata: Platycnemididae), revealed by the mitochondrial gene genealogy

2011 ◽  
Vol 12 (3) ◽  
pp. 845-849 ◽  
Author(s):  
Takuya Kiyoshi ◽  
Jun-ichi Takahashi ◽  
Takehiko Yamanaka ◽  
Koichi Tanaka ◽  
Kenji Hamasaki ◽  
...  
Keyword(s):  
Mitochondrial Gene ◽  
Gene Genealogy ◽  
Taxonomic Uncertainty

scholarly journals What phylogeny and gene genealogy analyses reveal about homoplasy in citrus microsatellite alleles

2009 ◽  
Vol 282 (1-2) ◽  
pp. 71-86 ◽  
Author(s):  
Noelle A. Barkley ◽  
Robert R. Krueger ◽  
Claire T. Federici ◽  
Mikeal L. Roose
Keyword(s):  
Gene Genealogy ◽  
Microsatellite Alleles
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