All episodes of PaperPlayer biorxiv evolutionary biology

PaperPlayer biorxiv evolutionary biology

Episodes

The Genetic Variation Landscape of African Swine Fever Virus Reveals Frequent Positive Selection on Amino Acid Replacements

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.12.249045v1?rss=1 Authors: Bao, Y.-J., Qiu, J., Rodriguez, F., Qiu, H.-J. Abstract: African swine fever virus (ASFV) is a lethal disease agent that causes high mortality in swine population and devastating loss in swine industries. The development of efficacious vaccines has been hindered by the knowledge gap in genetic properties of ASFV and the interface of virus-host interactions. In this study, we performed a genetic...

Published 08/14/20

Evolution of Chi motifs in Proteobacteria

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.13.249359v1?rss=1 Authors: Bobay, L.-M., Buton, A. J. Abstract: Homologous recombination is a key pathway found in nearly all bacterial taxa. The recombination complex allows bacteria to repair DNA double strand breaks but also promotes adaption through the exchange of DNA between cells. In Proteobacteria, this process is mediated by the RecBCD complex, which relies on the recognition of a DNA motif named Chi to initiate...

Published 08/14/20

Temporal instability of lake charr phenotypes: synchronicity of growth rates and morphology linked to environmental variables?

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.13.249557v1?rss=1 Authors: Chavarie, L., Voelker, S., Hansen, M., Bronte, C., Muir, A., Zimmerman, M., Krueger, c. Abstract: Pathways through which phenotypic variation arises among individuals arise can be complex. One assumption often made in relation to intraspecific diversity is that the stability or predictability of the environment will interact with expression of the underlying phenotypic variation. To address...

Published 08/14/20

Culture volume influences the dynamics of adaptation under long-term stationary phase

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.13.249599v1?rss=1 Authors: Gross, J., Avrani, S., Katz, S., Hershberg, R. Abstract: Escherichia coli and many other bacterial species, which are incapable of sporulation, can nevertheless survive within resource exhausted media by entering a state termed long-term stationary phase (LTSP). We have previously shown that E. coli populations adapt genetically under LTSP in an extremely convergent manner. Here we examine how...

Published 08/14/20

Differing effects of size and lifestyle on bone structure in mammals

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.13.249128v1?rss=1 Authors: Amson, E., Bibi, F. Abstract: The skeleton is involved in most aspects of vertebrate life history. Previous macroevolutionary analyses have shown that structural, historical, and functional factors influence the gross morphology of bone. The inner structure of bone has, however, received comparatively little attention. Here we address this gap in our understanding of vertebrate evolution by...

Published 08/14/20

Rapid Parallel Adaptation to Anthropogenic Heavy Metal Pollution

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.12.248328v1?rss=1 Authors: PAPADOPULOS, A. S. T., Helmstetter, A. J., Osborne, O. G., Comeault, A. A., Wood, D. P., Straw, E. A., Mason, L. D., Fay, M. F., Parker, J., Dunning, L. T., Foote, A. D., Smith, R. J., Lighten, J. Abstract: The impact of human mediated environmental change on the evolutionary trajectories of wild organisms is poorly understood. In particular, species' capacity to adapt rapidly (in hundreds of...

Published 08/14/20

Changes in Cell Size and Shape During 50,000 Generations of Experimental Evolution with Escherichia coli

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.13.250415v1?rss=1 Authors: Grant, N. A., Abdel Magid, A., Franklin, J., Dufour, Y. S., Lenski, R. Abstract: Bacteria adopt a wide variety of sizes and shapes, with many species exhibiting stereotypical morphologies. How morphology changes, and over what timescales, is less clear. Previous work examining cell morphology in an experiment with Escherichia coli showed that populations evolved larger cells and, in some cases,...

Published 08/14/20

Gene-tree Species-tree Discordance in the Eared Seals is best explained by Incomplete Lineage Sorting following Explosive Radiation in the Southern Hemisphere

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.11.246108v1?rss=1 Authors: Lopes, F., Oliveira, L. R., Kessler, A., Crespo, E., Cardenas-Alayza, S., Majluf, P., Sepulveda, M., Brownell, R. L., Franco-Trecu, V., Paez-Rosas, D., Chaves, J., Loch, C., Robertson, B., Acevedo-Whitehouse, K., Elorriaga-Verplancken, F. R., Kirkman, S. P., Peart, C. R., Wolf, J. B. W., Bonatto, S. L. Abstract: The phylogeny and systematics of fur seals and sea lions (Otariidae) have long been...

Published 08/13/20

Phylogeography and population genetic structure of red muntjacs: Evidence of enigmatic Himalayan red muntjac from India

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.11.247403v1?rss=1 Authors: Singh, B., Kumar, A., Uniyal, V. P., GUPTA, S. K. Abstract: We investigated the phylogeographic pattern of red muntjac across its distribution range, intending to address the presence of distinct lineages from Northwest India. The Complete mitogenome analysis revealed that India holds three mitochondrial lineages of red muntjac, whereas four were identified from its entire distribution range:...

Published 08/13/20

Genetic diversity and population structure analyses in the Alpine plum (Prunus brigantina Vill.) confirm its affiliation to the Armeniaca section

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.12.247718v1?rss=1 Authors: Liu, S., DECROOCQ, S., Harte, E., Tricon, D., Chague, A., Balakishiyeva, G., Kostritsyna, T., Turdiev, T., Fischer Le Saux, M., Dallot, S., GIRAUD, T., DECROOCQ, V. Abstract: In-depth characterization of the genetic diversity and population structure of wild relatives of crops is of paramount importance for genetic improvement and biodiversity conservation, and is particularly crucial when the...

Published 08/13/20

Freshwater sponge hosts and their green algae symbionts: a tractable model to understand intracellular symbiosis

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.12.247908v1?rss=1 Authors: Hall, C., Camilli, S., Dwaah, H., Kornegay, B., Lacy, C., Hill, M., Hill, A. Abstract: In many freshwater habitats, green algae form intracellular symbioses with a variety of heterotrophic host taxa including several species of freshwater sponge. These sponges perform important ecological roles in their habitats, and the poriferan:green algae partnerships offers unique opportunities to study the...

Published 08/13/20

Pleistocene stickleback genomes reveal the constraints on parallel evolution

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.12.248427v1?rss=1 Authors: Kirch, M., Romundset, A., Gilbert, M. T. P., Jones, F. C., Foote, A. D. Abstract: Parallel evolution is typically studied by comparing modern populations from contrasting environments, therefore the chronology of adaptive changes remains poorly understood. We applied a paleogenomics approach to investigate this temporal component of adaptation by sequencing the genomes of 11-13,000-year-old...

Published 08/13/20

The Biogeography of Dromiciops in Southern South America: middle Miocene transgressions, speciation and associations with Nothofagus

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.12.207332v1?rss=1 Authors: Quintero-Galvis, J. F., Saenz-Agudelo, P., Amico, G., Vazquez, S., Celis-Diez, J., Shafer, A., Nespolo, R. Abstract: Aim: Several geological events affecting Southern South America during the middle Miocene climatic optimum acted as important drivers of diversification to the biota. This is the case of Microbiotheria, for which Dromiciops is considered the sole surviving lineage, the sister...

Published 08/13/20

Same-sex sexual behavior and selection for indiscriminate mating

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.12.248096v1?rss=1 Authors: Lerch, B. A., Servedio, M. R. Abstract: The widespread presence of same-sex sexual behavior (SSB) has long been thought to pose an evolutionary conundrum [1-3], as participants in SSB suffer the cost of failing to reproduce after expending the time and energy to find a mate. The potential for SSB to occur as part of an optimal strategy has received almost no attention, although indiscriminate...

Published 08/13/20

Analysis of fungal genomes reveals commonalities of intron lossgain and functions in intron-poor species

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.11.247098v1?rss=1 Authors: Lim, C. S., Weinstein, B. N., Roy, S. W., Brown, C. M. Abstract: Current evolutionary reconstructions predict that early eukaryotic ancestors including both the last common ancestor of eukaryotes and of all fungi had intron-rich genomes. However, some extant eukaryotes have few introns, raising the question as to why these few introns are retained. Here we have used recently available fungal...

Published 08/12/20

Molecular signatures of sexual communication in the phlebotomine sand flies

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.11.247155v1?rss=1 Authors: Hickner, P. V., Timoshevskaya, N., Nowling, R. J., Labbe, F., Nguyen, A. D., McDowell, M. A., Spiegel, C. N., Syed, Z. Abstract: Phlebotomine sand flies employ an elaborate system of pheromone communication wherein males produce pheromones that attracts other males to leks (thus acting as aggregation pheromone) and females to the lekking males (sex pheromone). In addition, the type of pheromone...

Published 08/12/20

Dynamics of mutation accumulation and adaptation during three years of evolution under long-term stationary phase

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.11.246462v1?rss=1 Authors: Katz, S., Avrani, S., Yavneh, M., Hilau, S., Gross, J., Hershberg, R. Abstract: Many bacterial species that cannot sporulate, such as the model bacterium Escherichia coli, can nevertheless survive for years under resource exhaustion, in a state termed long-term stationary phase (LTSP). Here we describe the dynamics of E. coli adaptation during the first three years spent under LTSP. We show that...

Published 08/11/20

Negative correlation between mean female age at first birth and rates of molecular evolution in primates, with predictions of the reproductive age in early hominins

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.09.232769v1?rss=1 Authors: Bajdek, P. Abstract: mtDNA-based phylogenetic trees of the order Primates were constructed by the minimum evolution (ME) and maximum likelihood (ML) methods. Branch lengths were compared with the mean female age at first birth in the taxa studied. Higher reproductive age in females triggers a lower number of generations through time and, on average, at the molecular level smaller evolutionary...

Published 08/11/20

Contrasting selection at multiple life stages maintains divergent adaptation between sunflower ecotypes

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.08.242503v1?rss=1 Authors: Goebl, A. M., Kane, N. C., Doak, D. F., Rieseberg, L. H., Ostevik, K. L. Abstract: Conspecific populations living in adjacent, but contrasting, microenvironments represent excellent systems for studying natural selection. These systems are valuable because gene flow maintains genetic homogeneity except at loci experiencing strong, divergent selection. A history of reciprocal transplant and...

Published 08/10/20

Waiting for love but not forever: modelling the evolution of waiting time to selfing in hermaphrodites

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.10.243626v1?rss=1 Authors: Blüml, C., Ramm, S. A., van Benthem, K. J., Wittmann, M. J. Abstract: Although mixed mating systems involving both selfing and outcrossing are fairly common in hermaphrodites, it is unclear how they are maintained. In some species, individuals delay self-fertilization while they have not found a mating partner. The 'waiting time' is subject to two opposing selection pressures: waiting helps to...

Published 08/10/20

Action Potentials and Na+ voltage-gated ion channels in Placozoa

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.09.243113v1?rss=1 Authors: Romanova, D. Y., Smirnov, I. V., Nikitin, M. A., Kohn, A. B., Borman, A., Malyshev, A., Balaban, P. M., Moroz, L. L. Abstract: Placozoa are small disc-shaped animals, representing the simplest known, possibly ancestral, organization of free-living animals. With only six morphological distinct cell types, without any recognized neurons or muscle, placozoans exhibit fast effector reactions and...

Published 08/10/20

Rapid evolution drives the rise and fall of carbapenem resistance during an acute Pseudomonas aeruginosa infection

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.10.243741v1?rss=1 Authors: Wheatley, R., Diaz Caballero, J., Kapel, N., Quinn, A., del Barrio-Tofino, E., Lopez-Causape, C., Hedge, J., Torrens, G., Van der Schalk, T., Britto Xavier, B., Fernandez-Cuenca, F., Arenzana, A., Recanatini, C., Timbermont, L., Sifakis, F., Ruzin, A., Ali, O., Lammens, C., Goossens, H., Kluytmans, J., Kumar-Singh, S., Oliver, A., Malhotra-Kumar, S., MacLean, C. Abstract: It is well established...

Published 08/10/20

The interplay of SARS-CoV-2 evolution and constraints imposed by the structure and functionality of its proteins

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.10.244756v1?rss=1 Authors: Jaroszewski, L., Iyer, M., Alisoltani, A., Sedova, M., Godzik, A. Abstract: Fast evolution of the SARS-CoV-2 virus provides us with unique information about the patterns of genetic changes in a single pathogen in the timescale of months. This data is used extensively to track the phylodynamic of the pandemics spread and its split into distinct clades. Here we show that the patterns of SARS-CoV-2...

Published 08/10/20

Sex, fitness decline and recombination - Muller's ratchet vs. Ohta's ratchet

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.06.240713v1?rss=1 Authors: Ruan, Y., Wang, H., Zhang, L., Wen, H., Wu, C.-I. Abstract: It is generally accepted that the absence of recombination reduces the efficacy of natural selection for, or against, mutations. A special case is Muller's Ratchet (MR) whereby non-recombining genomes experience irreversible fitness decline due to the accumulation of deleterious mutations. MR has been a main hypothesis for sexual...

Published 08/07/20

An ancient, conserved gene regulatory network led to the rise of oral venom systems

Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.06.240747v1?rss=1 Authors: Barua, A., Mikheyev, A. S. Abstract: Oral venom systems evolved multiple times in numerous vertebrates enabling exploitation of unique predatory niches. Yet how and when they evolved remains poorly understood. Up to now, most research on venom evolution has focussed strictly on the toxins. However, using toxins present in modern day animals to trace the origin of the venom system is difficult,...

Published 08/07/20