Faculty of 1000 evaluation for Alpha3, a transposable element that promotes host sexual reproduction.

2010 ◽  
Author(s):  
Joe Heitman ◽  
Marianna Feretzaki
Keyword(s):  
Transposable Element ◽  
Sexual Reproduction

scholarly journals  3, a transposable element that promotes host sexual reproduction

2009 ◽  
Vol 24 (1) ◽  
pp. 33-44 ◽  
Author(s):  
E. Barsoum ◽  
P. Martinez ◽  
S. U. Astrom
Keyword(s):  
Transposable Element ◽  
Sexual Reproduction

scholarly journals No evidence that sex and transposable elements drive genome size variation in evening primroses

2014 ◽  
Author(s):  
J Arvid Agren ◽  
Stephan Greiner ◽  
Marc TJ Johnson ◽  
Stephen I Wright
Keyword(s):  
Transposable Elements ◽  
Transposable Element ◽  
Sexual Reproduction ◽  
Genome Size ◽  
Reproductive System ◽  
Size Variation ◽  
Comparative Approach ◽  
Element Abundance ◽  
Whole Genome ◽  
Genome Size Variation

Genome size varies dramatically across species, but despite an abundance of attention there is little agreement on the relative contributions of selective and neutral processes in governing this variation. The rate of sexual reproduction can potentially play an important role in genome size evolution because of its effect on the efficacy of selection and transmission of transposable elements. Here, we used a phylogenetic comparative approach and whole genome sequencing to investigate the contribution of sex and transposable element content to genome size variation in the evening primrose (Oenothera) genus. We determined genome size using flow cytometry from 30 Oenothera species of varying reproductive system and find that variation in sexual/asexual reproduction cannot explain the almost two-fold variation in genome size. Moreover, using whole genome sequences of three species of varying genome sizes and reproductive system, we found that genome size was not associated with transposable element abundance; instead the larger genomes had a higher abundance of simple sequence repeats. Although it has long been clear that sexual reproduction may affect various aspects of genome evolution in general and transposable element evolution in particular, it does not appear to have played a major role in the evening primroses.

scholarly journals Asexual reproduction drives the reduction of transposable element load

2018 ◽  
Author(s):  
Jens Bast ◽  
Kamil S. Jaron ◽  
Donovan Schuseil ◽  
Denis Roze ◽  
Tanja Schwander
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Transposable Element ◽  
Sexual Reproduction ◽  
Asexual Reproduction ◽  
Direct Evidence ◽  
Purifying Selection ◽  
Load Reduction ◽  
Over Time

AbstractTheory predicts that sexual reproduction can both facilitate and restrain transposable element (TE) accumulation by providing TEs with a means of spreading to all individuals in a population and facilitating TE load reduction via purifying selection. By quantifying genomic TE loads over time in experimental sexual and asexual Saccharomyces cerevisiae populations, we provide direct evidence that asexual reproduction drives a reduction of TE loads. We show, using simulations, that this reduction occurs via evolution of TE activity, most likely via increased excision rates. Thus, sex is a major driver of genomic TE loads and at the root of the success of TEs.

scholarly journals Asexual reproduction reduces transposable element load in experimental yeast populations

eLife ◽  
2019 ◽  
Vol 8 ◽  
Author(s):  
Jens Bast ◽  
Kamil S Jaron ◽  
Donovan Schuseil ◽  
Denis Roze ◽  
Tanja Schwander
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Transposable Element ◽  
Sexual Reproduction ◽  
Asexual Reproduction ◽  
Direct Evidence ◽  
Purifying Selection ◽  
Load Reduction ◽  
Over Time

Theory predicts that sexual reproduction can either facilitate or restrain transposable element (TE) accumulation by providing TEs with a means of spreading to all individuals in a population, versus facilitating TE load reduction via purifying selection. By quantifying genomic TE loads over time in experimental sexual and asexual Saccharomyces cerevisiae populations, we provide direct evidence that TE loads decrease rapidly under asexual reproduction. We show, using simulations, that this reduction may occur via evolution of TE activity, most likely via increased excision rates. Thus, sex is a major driver of genomic TE loads and at the root of the success of TEs.

Life cycle of Spirogyra decimina var. juergensii (Kütz.) O.V. Petlovany from Lake Baikal

2018 ◽  
pp. 1-7
Author(s):  
Ekaterina A. Volkova
Keyword(s):  
Life Cycle ◽  
Sexual Reproduction ◽  
Lake Baikal

Identification of Spirogyra species is based on the morphology of the fertile specimens. This work provides characteristics of growth and the time of reproduction of Spirogyra decimina var. juergensii in Lake Baikal and describes sexual reproduction and conditions for germination of new filaments of this species isolated from the lake.

Sexual Reproduction of a Red Tide Dinoflagellate Gymnodinium mikimotoi

1994 ◽  
Vol 60 (1) ◽  
pp. 125-126 ◽  
Author(s):  
Akira Ouchi ◽  
Satoshi Aida ◽  
Takuji Uchida ◽  
Tsuneo Honjo
Keyword(s):  
Sexual Reproduction ◽  
Red Tide

Definitions and concepts of reproductive biology of diatoms (terminological glossary)

2017 ◽  
Vol 51 ◽  
pp. 71-105 ◽  
Author(s):  
N. A. Davidovich
Keyword(s):  
Mating System ◽  
Sexual Reproduction ◽  
Reproductive Biology ◽  
World Literature ◽  
Russian Literature ◽  
Life Cycles ◽  
Transfer Of Knowledge ◽  
Research Experience ◽  
Key Terms

The absence of a conceptual terminology, sufficiently developed and widely accepted in the Russian literature, significantly hinders progress in the field of reproductive biology of diatoms, restricts communication and debate, prevents training and transfer of knowledge. The present work is an attempt, based on world literature and our own research experience, to summarize, systematize, add, and clarify the existing terms, concepts and definitions related to research which are focused on sex and sexual reproduction in diatoms. A glossary of key terms (more than 200, including synonyms) is provided. Terms refer to diatom reproductive biology, life cycles, fertilization, mating system, gender (including inheritance and determination of sex, as well as inheritance associated with sex). Contradictions between possible interpretations of certain terms are briefly discussed.

Sign in / Sign up

Export Citation Format

Share Document