scholarly journals Molecular Phylogenetics and Mitochondrial Evolution

Life ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 4
Author(s):  
Andrea Luchetti ◽  
Federico Plazzi
Keyword(s):  
Mitochondrial Genome ◽  
Molecular Phylogenetics ◽  
Animal Kingdom ◽  
Mitochondrial Evolution

The myth of a “typical” mitochondrial genome (mtDNA) is a rock-hard belief in the field of genetics, at least for the animal kingdom [...]

scholarly journals Polymorphism within the mitochondrial genome of the ctenophore, Pleurobrachia bachei and its ongoing rapid evolution

2018 ◽  
Author(s):  
Andrea B. Kohn ◽  
Leonid L. Moroz
Keyword(s):  
Mitochondrial Genome ◽  
Gene Loss ◽  
Rapid Evolution ◽  
Mitochondrial Genes ◽  
Mitochondrial Genomes ◽  
Animal Kingdom ◽  
Proteomic Data ◽  
High Level ◽  
Pleurobrachia Bachei ◽  
Fast Evolution

AbstractThe mitochondrial genomes in ctenophores are among the most compact in the animal kingdom with multiple rearrangements and examples of gene loss. Here, by resequencing of the Pleurobrachia bachei mitochondrial genome, we show that the high level of polymorphism (>10%) in Pleurobrachia might contribute to the ongoing fast evolution of ctenophores including the presence of truncated versions of apparently canonical genes such as cox1. Second, the codon interpretations in ctenophores, without robust proteomic data related to mitochondrial genes, is still a challenging issue, which is open for future experimental analyses.

scholarly journals The Mitochondrial Genome of the Moss Physcomitrella patens Sheds New Light on Mitochondrial Evolution in Land Plants

2006 ◽  
Vol 24 (3) ◽  
pp. 699-709 ◽  
Author(s):  
Kimihiro Terasawa ◽  
Masaki Odahara ◽  
Yukihiro Kabeya ◽  
Tatsuhiko Kikugawa ◽  
Yasuhiko Sekine ◽  
...  
Keyword(s):  
Mitochondrial Genome ◽  
Physcomitrella Patens ◽  
Land Plants ◽  
Mitochondrial Evolution

On the cross-sectional shape of the cellulose crystallites in the tunicate Halocynthia papillosa

1990 ◽  
Vol 48 (3) ◽  
pp. 566-567
Author(s):  
J.-F. Revol ◽  
Y. Van Daele ◽  
F. Gaill
Keyword(s):  
Contrast Imaging ◽  
Animal Kingdom ◽  
Bright Field ◽  
Field Mode ◽  
Cross Sectional ◽  
Ultrathin Sections ◽  
The Cross ◽  
Sectional Shape ◽  
Valonia Ventricosa ◽  
C Nmr

The only form of cellulose which could unequivocally be ascribed to the animal kingdom is the tunicin that occurs in the tests of the tunicates. Recently, high-resolution solid-state l3C NMR revealed that tunicin belongs to the Iβ form of cellulose as opposed to the Iα form found in Valonia and bacterial celluloses. The high perfection of the tunicin crystallites led us to study its crosssectional shape and to compare it with the shape of those in Valonia ventricosa (V.v.), the goal being to relate the cross-section of cellulose crystallites with the two allomorphs Iα and Iβ.In the present work the source of tunicin was the test of the ascidian Halocvnthia papillosa (H.p.). Diffraction contrast imaging in the bright field mode was applied on ultrathin sections of the V.v. cell wall and H.p. test with cellulose crystallites perpendicular to the plane of the sections. The electron microscope, a Philips 400T, was operated at 120 kV in a low intensity beam condition.

The Animal Kingdom

2009 ◽  
Author(s):  
Georges Cuvier ◽  
Edward Griffith
Keyword(s):  
Animal Kingdom
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