scholarly journals Independent domestication events in the blue-cheese fungusPenicillium roqueforti

2018 ◽  
Author(s):  
Emilie Dumas ◽  
Alice Feurtey ◽  
Ricardo C Rodríguez de la Vega ◽  
Stéphanie Le Prieur ◽  
Alodie Snirc ◽  
...  
Keyword(s):  
Population Genomics ◽  
Lipolytic Activity ◽  
Adaptive Divergence ◽  
Blue Cheese ◽  
History Of ◽  
Colonization Ability ◽  
Genetic Resource Conservation ◽  
Genomic Regions ◽  
Cheese Production ◽  
Selection Of

AbstractDomestication provides an excellent framework for studying adaptive divergence. Using population genomics and phenotypic assays, we reconstructed the domestication history of the blue cheese moldPenicillium roqueforti.We showed that this fungus was domesticated twice independently. The population used in Roquefort originated from an old domestication event associated with weak bottlenecks and exhibited traits beneficial for pre-industrial cheese production (slower growth in cheese and greater spore production on bread, the traditional multiplication medium). The other cheese population originated more recently from the selection of a single clonal lineage, was associated to all types of blue cheese worldwide but Roquefort, and displayed phenotypes more suited for industrial cheese production (high lipolytic activity, efficient cheese cavity colonization ability and salt tolerance). We detected genomic regions affected by recent positive selection and putative horizontal gene transfers. This study sheds light on the processes of rapid adaptation and raises questions about genetic resource conservation.

scholarly journals Population genomics of parallel hybrid zones in the mimetic butterflies, H. melpomene and H. erato

2013 ◽  
Author(s):  
Nicola Nadeau ◽  
Mayte Ruiz ◽  
Patricio Salazar ◽  
Brian Counterman ◽  
Jose Alejandro Medina ◽  
...  
Keyword(s):  
Population Genomics ◽  
De Novo ◽  
Reference Sequence ◽  
Colour Pattern ◽  
Adaptive Divergence ◽  
Population Divergence ◽  
Hybrid Zones ◽  
Data Alignment ◽  
Parallel Hybrid ◽  
Genomic Regions

Hybrid zones can be valuable tools for studying evolution and identifying genomic regions responsible for adaptive divergence and underlying phenotypic variation. Hybrid zones between subspecies of Heliconius butterflies can be very narrow and are maintained by strong selection acting on colour pattern. The co-mimetic species H. erato and H. melpomene have parallel hybrid zones where both species undergo a change from one colour pattern form to another. We use restriction associated DNA sequencing to obtain several thousand genome wide sequence markers and use these to analyse patterns of population divergence across two pairs of parallel hybrid zones in Peru and Ecuador. We compare two approaches for analysis of this type of data; alignment to a reference genome and de novo assembly, and find that alignment gives the best results for species both closely (H. melpomene) and distantly (H. erato, ~15% divergent) related to the reference sequence. Our results confirm that the colour pattern controlling loci account for the majority of divergent regions across the genome, but we also detect other divergent regions apparently unlinked to colour pattern differences. We also use association mapping to identify previously unmapped colour pattern loci, in particular the Ro locus. Finally, we identify within our sample a new cryptic population of H. timareta in Ecuador, which occurs at relatively low altitude and is mimetic with H. melpomene malleti.

Conclusion: What is Speculative Empiricism?

2018 ◽  
Author(s):  
Didier Debaise
Keyword(s):  
Social Groups ◽  
Speculative Philosophy ◽  
System P ◽  
History Of ◽  
Selection Of

Process and Reality ends with a warning: ‘[t]he chief danger to philosophy is narrowness in the selection of evidence’ (PR, 337). Although this danger of narrowness might emerge from the ‘idiosyncrasies and timidities of particular authors, of particular social groups, of particular schools of thought, of particular epochs in the history of civilization’ (PR, 337), we should not be mistaken: it occurs within philosophy, in its activity, its method. And the fact that this issue arises at the end of Process and Reality reveals the ambition that has accompanied its composition: Whitehead has resisted this danger through the form and ambition of his speculative construction. The temptation of a narrowness in selection attempts to expel speculative philosophy at the same time as it haunts each part of its system.

Displace of Documentary Heritage from the Soviet Union to Poland during the Third Decade of the XXth Century

2014 ◽  
Vol 3 ◽  
pp. 127-137
Author(s):  
Tatsiana Hiarnovich
Keyword(s):  
Soviet Union ◽  
International Agreements ◽  
Peace Treaty ◽  
Actual Process ◽  
Xxth Century ◽  
The Third ◽  
The Soviet Union ◽  
History Of ◽  
Selection Of

The paper explores the displace of Polish archives from the Soviet Union that was performed in 1920s according to the Riga Peace Treaty of 1921 and other international agreements. The aim of the research is to reconstruct the process of displace, based on the archival sources and literature. The object of the research is those documents that were preserved in the archives of Belarus and together with archives from other republics were displaced to Poland. The exploration leads to clarification of the selection of document fonds to be displaced, the actual process of movement and the explanation of the role that the archivists of Belarus performed in the history of cultural relationships between Poland and the Soviet Union. The articles of the Treaty of Riga had been formulated without taking into account the indivisibility of archive fonds that is one of the most important principles of restitution, which caused the failure of the treaty by the Soviet part.

Diagnostic approach to causes of spinal pain

2018 ◽  
pp. 66-70
Author(s):  
F. D. Nasirova
Keyword(s):  
Spinal Pain ◽  
Rapid Loss ◽  
Loss Of Weight ◽  
History Of ◽  
Radiologic Investigation ◽  
Males And Females ◽  
Serious Disease ◽  
Pain At Rest ◽  
Oncologic Diseases ◽  
Selection Of

Causes of spinal pain are extremely varying. Sex composition of patients referring with spinal pain at the age of 16 to 35 was 35% and 65% for males and females, respectively. Peak number of complaints was observed in 30-40 years age group of highest work ability. The followings should be considered as precautions in spinal pain: onset of pain at the age of 20 and after 50, family history of oncologic diseases, walking disorders or dysfunctions of sphincters, numbness in extremities, general malaise and rapid loss of weight, pain at rest and primarily at night, as these conditions may be a warning of underlying serious disease. Selection of algorithm for radiologic investigation is decided by the treating physician.

Philosophcal review of h. white̕s tropological theory in the context of the new philosophy of history

2020 ◽  
Vol 3 (152) ◽  
pp. 92-99
Author(s):  
S. M. Geiko ◽  
◽  
O. D. Lauta
Keyword(s):  
Modern Science ◽  
Historical Knowledge ◽  
Text Organization ◽  
The Social ◽  
History Of ◽  
Actual Material ◽  
The Common ◽  
Historical Nature ◽  
Selection Of

The article provides a philosophical analysis of the tropological theory of the history of H. White. The researcher claims that history is a specific kind of literature, and the historical works is the connection of a certain set of research and narrative operations. The first type of operation answers the question of why the event happened this way and not the other. The second operation is the social description, the narrative of events, the intellectual act of organizing the actual material. According to H. White, this is where the set of ideas and preferences of the researcher begin to work, mainly of a literary and historical nature. Explanations are the main mechanism that becomes the common thread of the narrative. The are implemented through using plot (romantic, satire, comic and tragic) and trope systems – the main stylistic forms of text organization (metaphor, metonymy, synecdoche, irony). The latter decisively influenced for result of the work historians. Historiographical style follows the tropological model, the selection of which is determined by the historian’s individual language practice. When the choice is made, the imagination is ready to create a narrative. Therefore, the historical understanding, according to H. White, can only be tropological. H. White proposes a new methodology for historical research. During the discourse, adequate speech is created to analyze historical phenomena, which the philosopher defines as prefigurative tropological movement. This is how history is revealed through the art of anthropology. Thus, H. White’s tropical history theory offers modern science f meaningful and metatheoretically significant. The structure of concepts on which the classification of historiographical styles can be based and the predictive function of philosophy regarding historical knowledge can be refined.

Dynamics of Immigration: From Humanitarianism to Securitization

2018 ◽  
Author(s):  
Reumah Suhail
Keyword(s):  
World War Ii ◽  
Host Country ◽  
Country Of Origin ◽  
Immigration Policies ◽  
World War ◽  
Post World War Ii ◽  
Immigration Process ◽  
History Of ◽  
Selection Of

The paper addresses the different aspects of the politics of immigration, the underlying factors that motivate, force or pressurize people to move from their country of origin to new abodes in foreign nations. In the introduction the paper discusses different theories playing their due role in the immigration process, namely Realism and Constructivism. The paper examines the history of immigration and post-World War II resettlement followed by an analysis of how immigration policies are now centered towards securitization as opposed to humanitarianism after 9/11, within the scenario of globalization. Muslim migrant issues and more stringent immigration policies are also weighed in on, followed by a look at immigration in regions which are not hotspot settlement destinations. Lastly an analysis is presented about the selection of a host country a person opts for when contemplating relocation; a new concept is also discussed and determined whereby an individual can opt for “citizenship by investment” and if such a plan is an accepted means of taking on a new nationality.

A ABORDAGEM SOBRE O TERRITÓRIO EM AUTORES DA GEOGRAFIA BRASILEIRA: MUTAÇÕES DE UM CONCEITO

GEOgraphia ◽  
2018 ◽  
Vol 20 (42) ◽  
pp. 38
Author(s):  
Lucas Labigalini Fuini
Keyword(s):  
Theoretical Knowledge ◽  
History Of Thought ◽  
Palabras Clave ◽  
History Of ◽  
Territorial Approach ◽  
Selection Of

Resumo: O objetivo deste artigo é reconhecer, através de uma seleção de autores e obras, as características principais da abordagem territorial na Geografia brasileira desenvolvida desde fins dos anos 1970, quando se reconhece um verdadeiro interesse na sistematização e no conhecimento teórico sobre o conceito em nossa ciência. No perpassar por autores, objetiva-se identificar a crescente multidimensionalidade e transescalaridade que o conceito adquire nos seus conteúdos e aplicações e a mudança de sentido explicativo que assume no avançar dos anos 2000.Palavras-chave: Território. Territorialidade. História do pensamento. Político. Geografia brasileira. THE APPROACH TO THE TERRITORY IN AUTHORS OF THE BRAZILIAN GEOGRAPHY: MUTATIONS OF A CONCEPTAbstract: The purpose of this article is to recognize, through a selection of authors and works, the main features of the territorial approach in the Brazilian Geography developed since the late 1970s, when it recognizes a real interest in the systematization and theoretical knowledge about the concept in our science. In pervade by authors, aims to identify the increasing multidimensionality and transescalarity that the concept gets in their content and applications and the change in explanatory sense that assumes in advance the years 2000.Keywords: Territory. Territoriality. History of thought. Political. Brazilian geography. EL ENFOQUE SOBRE EL TERRITORIO EN AUTORES DE GEOGRAFÍA BRASILEÑA: MUTACIONES DE UN CONCEPTOResumen: El objetivo de este artículo es reconocer, a través de una selección de autores y obras, las características principales del abordaje territorial en la Geografía brasileña desarrollada desde fines de los años 1970, cuando se reconoce un verdadero interés en la sistematización y en el conocimiento teórico sobre el concepto en nuestra ciencia . En el traspaso por autores, se objetiva identificar la creciente multidimensionalidad y transescalaridad que el concepto adquiere en sus contenidos y aplicaciones y el cambio de sentido explicativo que asume a lo largo de los años 2000.Palabras-clave: Territorio. Territorialidad. Historia del pensamiento. Político. Geografía brasileña.

scholarly journals Mapping QTL for spike fertility and related traits in two doubled haploid wheat (Triticum aestivum L.) populations

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Nicole Pretini ◽  
Leonardo S. Vanzetti ◽  
Ignacio I. Terrile ◽  
Guillermo Donaire ◽  
Fernanda G. González
Keyword(s):  
Doubled Haploid ◽  
Marker Assisted Selection ◽  
Triticum Aestivum L ◽  
Physiological Model ◽  
Yield Potential ◽  
Breeding Programs ◽  
Per Se ◽  
Genomic Regions ◽  
Fertility Traits ◽  
Selection Of

Abstract Background In breeding programs, the selection of cultivars with the highest yield potential consisted in the selection of the yield per se, which resulted in cultivars with higher grains per spike (GN) and occasionally increased grain weight (GW) (main numerical components of the yield). In this study, quantitative trait loci (QTL) for GW, GN and spike fertility traits related to GN determination were mapped using two doubled haploid (DH) populations (Baguette Premium 11 × BioINTA 2002 and Baguette 19 × BioINTA 2002). Results In total 305 QTL were identified for 14 traits, out of which 12 QTL were identified in more than three environments and explained more than 10% of the phenotypic variation in at least one environment. Eight hotspot regions were detected on chromosomes 1A, 2B, 3A, 5A, 5B, 7A and 7B in which at least two major and stable QTL sheared confidence intervals. QTL on two of these regions (R5A.1 and R5A.2) have previously been described, but the other six regions are novel. Conclusions Based on the pleiotropic analysis within a robust physiological model we conclude that two hotspot genomic regions (R5A.1 and R5A.2) together with the QGW.perg-6B are of high relevance to be used in marker assisted selection in order to improve the spike yield potential. All the QTL identified for the spike related traits are the first step to search for their candidate genes, which will allow their better manipulation in the future.

scholarly journals Elucidation of Early Evolution of HIV-1 Group M in the Congo Basin Using Computational Methods

Genes ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 517
Author(s):  
Marcel Tongo ◽  
Darren P. Martin ◽  
Jeffrey R. Dorfman
Keyword(s):  
Genetic Relatedness ◽  
Early Evolution ◽  
Congo Basin ◽  
Global Epidemic ◽  
The Past ◽  
History Of ◽  
Cold Spots ◽  
Genomic Regions ◽  
Basin Region ◽  
Hiv 1

The Congo Basin region is believed to be the site of the cross-species transmission event that yielded HIV-1 group M (HIV-1M). It is thus likely that the virus has been present and evolving in the region since that cross-species transmission. As HIV-1M was only discovered in the early 1980s, our directly observed record of the epidemic is largely limited to the past four decades. Nevertheless, by exploiting the genetic relatedness of contemporary HIV-1M sequences, phylogenetic methods provide a powerful framework for investigating simultaneously the evolutionary and epidemiologic history of the virus. Such an approach has been taken to find that the currently classified HIV-1 M subtypes and Circulating Recombinant Forms (CRFs) do not give a complete view of HIV-1 diversity. In addition, the currently identified major HIV-1M subtypes were likely genetically predisposed to becoming a major component of the present epidemic, even before the events that resulted in the global epidemic. Further efforts have identified statistically significant hot- and cold-spots of HIV-1M subtypes sequence inheritance in genomic regions of recombinant forms. In this review we provide ours and others recent findings on the emergence and spread of HIV-1M variants in the region, which have provided insights into the early evolution of this virus.

Le fonti, i metodi e le narrazioni della storia della videoarte in Italia negli anni Settanta

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Lisa Parola
Keyword(s):  
Comparative Study ◽  
Contemporary Art ◽  
Narrative Structure ◽  
Video Art ◽  
Wide Range ◽  
History Of ◽  
Selection For ◽  
The Many ◽  
Art And Architecture ◽  
Selection Of

This essay derives from the primary need to make order between direct and indirect sources available for the reconstruction of the history of video art in Italy in the seventies. In fact, during the researches for the Ph.D. thesis it became clear that in most cases it is difficult to define, in terms of facts, which of the different historiographies should be taken into consideration to deepen the study of video art in Italy. Beyond legitimate differences of perspectives and methods, historiographical narratives all share similar issues and narrative structure. The first intention of the essay is, therefore, to compare the different historiographic narratives on Italian video art of the seventies, verifying their genealogy, the sources used and the accuracy of the narrated facts. For the selection of the corpus, it was decided to analyze in particular monographic volumes dealing with the history of the origins of video art in Italy. The aim was, in fact, to get a wide range of types of "narrations", as in the case of contemporary art and architecture magazines, which are examined in the second part of the essay. After the selection, for an analytical and comparative study of the various historiography, the essay focuses only on the Terza Biennale Internazionale della Giovane Pittura. Gennaio ’70. Comportamenti, oggetti e mediazioni (Third International Biennial of Young Painting. January '70. Behaviors, Objects and Mediations, 1970, Bologna), the exhibition which - after Lucio Fontana's pioneering experiments - is said to be the first sign of the arrival of videotape in Italy (called at the time videorecording), curated by Renato Barilli, Tommaso Trini, Andrea Emiliani and Maurizio Calvesi. The narration given so far of this exhibition appeared more mythological than historical and could be compared structurally to that of the many numerous beginnings that historiographyies on international video art identify as ‘first’ and ‘generative’. In the first part of the essay the 'facts' related to Gennaio ’70, as narrated by historiography on video art, are compared. In the second part the survey is carried out through some of the direct sources identified during the research, with the aim of answering to questions raised by the comparison between historiographies. Concluding, it is important to underline that the tapes containing the videos transmitted have not been found and seem to have disappeared since the ending of the exhibition. Nevertheless, the deepening of the works and documentation transmitted during the exhibition is possible thanks to other types of sources which give us many valuable information regarding video techniques and practices at the beginning of 1970 in Italy.

Sign in / Sign up

Export Citation Format

Share Document