Molecules match morphology: mitochondrial DNA supports Bayer's Lytreia - Bebryce - Heterogorgia (Alcyonacea : Octocorallia) clade hypothesis

2010 ◽  
Vol 24 (1) ◽  
pp. 23 ◽  
Author(s):  
Sergio Vargas ◽  
Michael Eitel ◽  
Odalisca Breedy ◽  
Bernd Schierwater
Keyword(s):  
Mitochondrial Dna ◽  
Molecular Phylogeny ◽  
Phylogenetic Relationship ◽  
Morphological Variation ◽  
Mitochondrial Marker ◽  
Morphological Studies ◽  
Close Phylogenetic Relationship ◽  
Morphological Assessment ◽  
Molecular Characters

Several studies attempting to clarify the taxonomy and systematics of Octocorallia have highlighted the important role of molecular characters in corroborating or rejecting previous hypotheses based on morphological variation. One such hypothesis is that of a close phylogenetic relationship between the genera Lytreia, Bebryce and Heterogorgia proposed by Bayer based on morphological studies of the genera. Herein, we tested Bayer’s hypothesis using the mitochondrial marker mshI. We deduced a molecular phylogeny including members of the families Gorgoniidae and ‘Paramuriceidae’ that corroborated the existence of Bayer’s Lytreia–Bebryce–Heterogorgia clade. In addition, we provide a morphological assessment of the three genera as well as diagnoses for each of them. We also discuss, based on the phylogenetic results obtained, the evolution of sclerite morphology within Bayer’s Lytreia–Bebyce–Heterogorgia clade. Finally, we propose a Tethyan origin for the Lytreia–Bebryce–Heterogorgia clade.

scholarly journals The Role of Wild and Domesticated Animals in the Origin and Transmission of the Coronavirus SARS-CoV-2

2021 ◽  
Vol 7 (9) ◽  
pp. 136-143
Author(s):  
S. Rustamova ◽  
M. Ali
Keyword(s):  
Phylogenetic Relationship ◽  
Middle Eastern ◽  
Domestic Cats ◽  
Safety Measures ◽  
Domesticated Animals ◽  
Biological Safety ◽  
International Team ◽  
Close Phylogenetic Relationship ◽  
Relationship Of

The review highlights animal coronaviruses, their pathogenicity, and the possible role of domestic and agricultural animals in the further spread of the COVID-19. Joint researches have been established amongst international team of scientists regarding a close phylogenetic relationship of the coronavirus SARS-CoV-2 with the coronaviruses of bats and carnivores, especially with the representatives of Felidae family (domestic cats). However, the case of Middle Eastern SARS transmitted by camels is required a special attention to biological safety measures in farms.

The role of mitochondrial DNA in the cancerogenesis of cervix HPV positive women

2008 ◽  
Vol 21 (2) ◽  
pp. 85-89
Author(s):  
Alicja Warowicka ◽  
Joanna Pacholska-Bogalska ◽  
Anna Kwaśniewska ◽  
Anna Goździcka-Józefiak
Keyword(s):  
Mitochondrial Dna

Role of Mitochondrial DNA in Inflammatory Airway Diseases

2021 ◽  
pp. 1485-1499
Author(s):  
Ryan J. Snyder ◽  
Steven R. Kleeberger
Keyword(s):  
Mitochondrial Dna ◽  
Airway Diseases

scholarly journals Cytosolic Ribosomal Mutations That Abolish Accumulation of Circular Intron in the Mitochondria Without Preventing Senescence of Podospora anserina

Genetics ◽  
1997 ◽  
Vol 145 (3) ◽  
pp. 697-705 ◽  
Author(s):  
Philippe Silar ◽  
France Koll ◽  
Michèle Rossignol
Keyword(s):  
Mitochondrial Dna ◽  
Ribosomal Proteins ◽  
Podospora Anserina ◽  
Cox1 Gene ◽  
Accuracy Control ◽  
Additional Function ◽  
Mutant Proteins ◽  
Double Stranded Dna ◽  
Dna Modifications

The filamentous fungus Podospora anserina presents a degeneration syndrome called Senescence associated with mitochondrial DNA modifications. We show that mutations affecting the two different and interacting cytosolic ribosomal proteins (S7 and S19) systematically and specifically prevent the accumulation of senDNAα (a circular double-stranded DNA plasmid derived from the first intron of the mitochondrial cox1 gene or intron α) without abolishing Senescence nor affecting the accumulation of other usually observed mitochondrial DNA rearrangements. One of the mutant proteins is homologous to the Escherichia coli S4 and Saccharomyces cerevisiae S13 ribosomal proteins, known to be involved in accuracy control of cytosolic translation. The lack of accumulation of senDNAα seems to result from a nontrivial ribosomal alteration unrelated to accuracy control, indicating that S7 and S19 proteins have an additional function. The results strongly suggest that modified expression of nucleus-encoded proteins contributes to Senescence in P. anserina. These data do not fit well with some current models, which propose that intron α plays the role of the cytoplasmic and infectious Determinant of Senescence that was defined in early studies.

scholarly journals The Role of Mitochondria in Carcinogenesis

2021 ◽  
Vol 22 (10) ◽  
pp. 5100
Author(s):  
Paulina Kozakiewicz ◽  
Ludmiła Grzybowska-Szatkowska ◽  
Marzanna Ciesielka ◽  
Jolanta Rzymowska
Keyword(s):  
Prostate Cancer ◽  
Mitochondrial Dna ◽  
Nuclear Dna ◽  
Dna Polymorphisms ◽  
Gene Encoding ◽  
Dna Mutations ◽  
Nadh Ubiquinone Oxidoreductase ◽  
Gene Coi ◽  
The Impact

The mitochondria are essential for normal cell functioning. Changes in mitochondrial DNA (mtDNA) may affect the occurrence of some chronic diseases and cancer. This process is complex and not entirely understood. The assignment to a particular mitochondrial haplogroup may be a factor that either contributes to cancer development or reduces its likelihood. Mutations in mtDNA occurring via an increase in reactive oxygen species may favour the occurrence of further changes both in mitochondrial and nuclear DNA. Mitochondrial DNA mutations in postmitotic cells are not inherited, but may play a role both in initiation and progression of cancer. One of the first discovered polymorphisms associated with cancer was in the gene NADH-ubiquinone oxidoreductase chain 3 (mt-ND3) and it was typical of haplogroup N. In prostate cancer, these mutations and polymorphisms involve a gene encoding subunit I of respiratory complex IV cytochrome c oxidase subunit 1 gene (COI). At present, a growing number of studies also address the impact of mtDNA polymorphisms on prognosis in cancer patients. Some of the mitochondrial DNA polymorphisms occur in both chronic disease and cancer, for instance polymorphism G5913A characteristic of prostate cancer and hypertension.

The role of mitochondrial DNA large deletion for the development of presbycusis in Fischer 344 rats

2007 ◽  
Vol 27 (3) ◽  
pp. 370-377 ◽  
Author(s):  
Shankai Yin ◽  
Zhiping Yu ◽  
Ravi Sockalingam ◽  
Manohar Bance ◽  
Genlou Sun ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Large Deletion ◽  
Fischer 344 Rats ◽  
Fischer 344

CHROMOSOME PAIRING IN TWO INTERSPECIFIC HYBRIDS OF TRIFOLIUM

1970 ◽  
Vol 12 (4) ◽  
pp. 790-794 ◽  
Author(s):  
Chi-Chang Chen ◽  
Pryce B. Gibson
Keyword(s):  
Phylogenetic Relationship ◽  
Chromosome Pairing ◽  
Trifolium Repens ◽  
Interspecific Hybrids ◽  
Triploid Hybrid ◽  
Close Phylogenetic Relationship ◽  
Metaphase I

Both Trifolium repens (2n = 32) and T. nigrescens (2n = 16) formed bivalents during meiosis. However, their triploid hybrid showed an average of 4.27 trivalents per microsporocyte at metaphase I. The frequency of trivalents in the hybrid between T. nigrescens and autotetraploid T. occidentale (2n = 32) was 5.69. The data are interpreted to indicate: (1) a possible autotetraploid origin of T. repens; and (2) a close phylogenetic relationship among T. repens, T. nigrescens and T. occidentale.

Role of mitochondrial DNA in human aging

Mitochondrion ◽  
2002 ◽  
Vol 2 (1-2) ◽  
pp. 27-37 ◽  
Author(s):  
Giuseppe Attardi
Keyword(s):  
Mitochondrial Dna ◽  
Human Aging
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