scholarly journals Molecular Analysis of a Plum pox virus W Isolate in Plum Germplasm Hand Carried into the USA from the Ukraine Shows a Close Relationship to a Latvian Isolate

Plant Disease ◽  
2013 ◽  
Vol 97 (1) ◽  
pp. 44-52 ◽  
Author(s):  
Vessela Mavrodieva ◽  
Delano James ◽  
Karen Williams ◽  
Sarika Negi ◽  
Aniko Varga ◽  
...  

Four of 19 Prunus germplasm accessions hand carried from the Ukraine into the United States without authorization were found to be infected with Plum pox virus (PPV). Of the three isolates characterized, isolates UKR 44189 and UKR 44191 were confirmed to be isolates of PPV strain W, and UKR 44188 was confirmed to be an isolate of PPV strain D. UKR 44189 and UKR 44191 are very closely related to the PPV strain W isolate LV-145bt (HQ670748) from Latvia. Nucleotide and amino acid sequence identities between these three isolates were greater than 99%. This indicates that the isolates are very closely related and likely originated from a common source. The high genetic diversity among PPV-W strain isolates allowed the identification of potential recombination events between PPV isolates. It appears also that GF 305 peach and Prunus tomentosa are not hosts for the PPV isolate UKR 44189.

2014 ◽  
Vol 49 (4) ◽  
pp. 265-272 ◽  
Author(s):  
Lucimara Junko Koga ◽  
Charles Roger Bowen ◽  
Claudia Vieira Godoy ◽  
Maria Cristina Neves de Oliveira ◽  
Glen Lee Hartman

The objective of this work was to evaluate the genetic diversity among Sclerotinia sclerotiorum isolates from Brazil and the USA, assess their aggressiveness variability, and verify the existence of an isolate-cultivar interaction. Isolate variability was determined by mycelial compatibility grouping (MCG), and isolate aggressiveness by cut-stem inoculations of soybean cultivars. Two experiments for MCGs and two for aggressiveness were conducted with two sets of isolates. The first set included nine isolates from the same soybean field in Brazil and nine from the Midwest region of the USA. The second set included 16 isolates from several regions of Brazil and one from the USA. In the first set, 18 isolates formed 12 different MCGs. In the second set, 81% of the isolates from Brazil grouped into a single MCG. No common MCGs were observed among isolates from Brazil and the USA. The isolates showed aggressiveness differences in the first set, but not in the second. Although aggressiveness differed in the first set, soybean cultivars and isolates did not interact significantly. Cultivar rank remained the same, regardless of the genetic diversity, aggressiveness difference, and region or country of origin of the isolate. Results from screening of soybean cultivars, performed by the cut-stem method in the USA, can be used as reference for researchers in Brazil.


2015 ◽  
Vol 5 (14) ◽  
pp. 2929-2944 ◽  
Author(s):  
Claudia M. Holguin ◽  
Juan A. Baeza ◽  
John D. Mueller ◽  
Paula Agudelo

2011 ◽  
pp. 117-125 ◽  
Author(s):  
Cristina E Cabrera ◽  
Romel F Gómez ◽  
Andrés E Zuñiga ◽  
Raúl H Corral ◽  
Bertha López ◽  
...  

Nosocomial infections are a major challenge for public health because of the high rates of morbidity and mortality generated. It was considered that the excessive or inappropriate use of antibiotics triggers the emergence of resistant strains. Among the clinically important bacteria that most commonly cause nososcomial infections, Gram positive multiresistant pathogens stand out such as methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus spp (VRE), and the Gram negative strains of Klebsiella pneumoniae, Escherichia coli, Pseudomonas spp. and Acinetobacter baumannii producing expanded spectrum b-lactamases (ESbL). This review describes the behavior of the main bacterial pathogens resistant to antibiotics that cause infections in Europe, United States, and Latin America, emphasizing studies of molecular epidemiology on a global scale, including the major epidemiological studies in Colombia. The genetic structure of S. aureus and Enterococcus spp strains shows a clonal characteristic favored by the predominance of a small number of clones with the capacity to spread globally, due probably to cross-infection. However, the introduction of MRSA strains from the community encourages genetic diversity, tending to establish a genetic polyclonal endemic structure in places like the United States. In Gram negative bacteria, the high genetic diversity among isolates, mainly in Latin American countries, indicates that the polyclonal spread is influenced by horizontal transfer of plasmids, by excessive exposure to antibiotics, and prolonged hospital stays. In Colombia, there is information on nosocomial resistant pathogens, but molecular epidemiological information is still scarce.


2019 ◽  
Vol 24 (1) ◽  
pp. 128-141
Author(s):  
Valentyn Mychailovych Pomohaibo

Historical experience and scientific researches witness that both an individual’s life success and a country’s prosperity and the living standard of population depend not on the quality of education itself, but on its effectiveness. The effectiveness of education, in turn, is determined by a social productivity of science, which can be presented elementarily by such a simple indicator as a number of Nobel laureates. The USA holds the leading place among countries in this area. Thus, the United States is the country that can maximally ensure human development, and most importantly – a realization of human natural gifts and an acquisition of appropriate material welfare. This is evidenced not only by the high level of science development, but also by the phenomenon of a success of a number of immigrant communities compared with the US European population. The most successful ethnic groups in the United States are Jews, Indians, Chinese, Nigerians, Cubans, Iranians and Lebanese. Particularly impressive is the success of the Nigerians and Cubans against a background of comparatively small achievements of the African and Latin Americans. It has been found that all most successful ethnic groups in the USA have three mental traits: a superiority complex, an insecurity, and impulse control. The superiority complex lies in deep inner confidence in an uniqueness of your community compared to others. This confidence can be based on religion, majestic history and culture, origin, and so on. Insecurity means anxiety uncertainty in its significance in society, concern about a lack of results of its activities. Key sources of insecurity are scorn by other communities, fear and parents’ pressure. A scorn by the people of a strange country and its own indignation in this regard may be the most powerful incentive for growth. The second source of the insecurity is fear of being unable to survive in a strange country, which can lead to despair, paralysis of will, capitulation, even shame. But it can also cause a completely different reaction – an urge to rise, earn money, reach power, either to become successful here, or to have same means to escape. The third and most common source of the sense of threat in successful immigrant communities is the pressure from parents to children to be succeed. Parents bring up children's to conviction that success, foremost in learning, is a responsibility of family honor, as well as protection from an uncertain and hostile world. Impulse control means an ability to withstand various temptations, especially the temptation to relinquish difficulty and challenge a difficult task rather than to perform it. No human society can exist without control of impulses. However, it must be remembered that individual control of impulses is just a futile austerity. Success is only possible as a result of combining all three principles – a conviction of superiority, a sense of threat, and an impulse control. Philosophy of a successful life is an extremely effective means of achieving a high social status, if it is important for you. However, it should be used only to succeed. After this it is necessary to get rid of success philosophy, because in the future it can cause a pathological drive to extremes. The experience of bringing up children in the successful communities of America will undoubtedly be useful in the current reforming of Ukrainian education.


2004 ◽  
Vol 6 (1) ◽  
pp. 75-92 ◽  
Author(s):  
James E. Goggin

Interest in the fate of the German psychoanalysts who had to flee Hitler's Germany and find refuge in a new nation, such as the United States, has increased. The ‘émigré research’ shows that several themes recur: (1) the theme of ‘loss’ of one's culture, homeland, language, and family; and (2) the ambiva-lent welcome these émigrés received in their new country. We describe the political-social-cultural context that existed in the United States during the 1930s, 1940s and 1950s. Documentary evidence found in the FBI files of three émigré psychoanalysts, Clara Happel, Martin Grotjahn, and Otto Fenichel, are then presented in combination with other source material. This provides a provisional impression of how each of these three individuals experienced their emigration. As such, it gives us elements of a history. The FBI documents suggest that the American atmosphere of political insecurity and fear-based ethnocentric nationalism may have reinforced their old fears of National Socialism, and contributed to their inclination to inhibit or seal off parts of them-selves and their personal histories in order to adapt to their new home and become Americanized. They abandoned the rich social, cultural, political tradition that was part of European psychoanalysis. Finally, we look at these elements of a history in order to ask a larger question about the appropriate balance between a liberal democratic government's right to protect itself from internal and external threats on the one hand, or crossover into the blatant invasion of civil rights and due process on the other.


2020 ◽  
Vol 2 (4) ◽  
pp. 32-54
Author(s):  
Silvia Spitta

Sandra Ramos (b. 1969) is one of the few artists to reflect critically on both sides of the Cuban di-lemma, fully embodying the etymological origins of the word in ancient Greek: di-, meaning twice, and lemma, denoting a form of argument involving a choice between equally unfavorable alternatives. Throughout her works she shines a light on the dilemmas faced by Cubans whether in Cuba or the United States, underlining the bad personal and political choices people face in both countries. During the hard 1990s, while still in Havana, the artist focused on the traumatic one-way journey into exile by thousands, as well as the experience of profound abandonment experienced by those who were left behind on the island. Today she lives in Miami and operates a studio there as well as one in Havana. Her initial disorientation in the USA has morphed into an acerbic representation and critique of the current administration and a deep concern with the environmental collapse we face. A buffoonlike Trumpito has joined el Bobo de Abela and Liborio in her gallery of comic characters derived from the rich Cuban graphic arts tradition where she was formed. While Cuba is now represented as a rotten cake with menacing flies hovering over it ready to pounce, a bombastic Trumpito marches across the world stage, trampling everything underfoot, a dollar sign for a face.


Author(s):  
Attarid Awadh Abdulhameed

Ukrainia Remains of huge importance to Russian Strategy because of its Strategic importance. For being a privileged Postion in new Eurasia, without its existence there would be no logical resons for eastward Expansion by European Powers.  As well as in Connection with the progress of Ukrainian is no less important for the USA (VSD, NDI, CIA, or pentagon) and the European Union with all organs, and this is announced by John Kerry. There has always ben Russian Fear and Fear of any move by NATO or USA in the area that it poses a threat to  Russians national Security and its independent role and in funence  on its forces especially the Navy Forces. There for, the Crisis manyement was not Zero sum game, there are gains and offset losses, but Russia does not accept this and want a Zero Sun game because the USA. And European exteance is a Foot hold in Regin Which Russian sees as a threat to its national security and want to monopolize control in the strategic Qirim.


Author(s):  
Halyna Shchyhelska

2018 marks the 100th anniversary of the proclamation of Ukrainian independence. OnJanuary 22, 1918, the Ukrainian People’s Republic proclaimed its independence by adopting the IV Universal of the Ukrainian Central Rada, although this significant event was «wiped out» from the public consciousness on the territory of Ukraine during the years of the Soviet totalitarian regime. At the same time, January 22 was a crucial event for the Ukrainian diaspora in the USA. This article examines how American Ukrainians interacted with the USA Government institutions regarding the celebration and recognition of the Ukrainian Independence day on January 22. The attention is focused on the activities of ethnic Ukrainians in the United States, directed at the organization of the special celebration of the Ukrainian Independence anniversaries in the US Congress and cities. Drawing from the diaspora press and Congressional Records, this article argues that many members of Congress participated in the observed celebration and expressed kind feelings to the Ukrainian people, recognised their fight for freedom, during the House of Representatives and Senate sessions. Several Congressmen submitted the resolutions in the US Congress urging the President of United States to designate January 22 as «Ukrainian lndependence Day». January 22 was proclaimed Ukrainian Day by the governors of fifteen States and mayors of many cities. Keywords: January 22, Ukrainian independence day, Ukrainian diaspora, USA, interaction, Congress


2018 ◽  
Vol 10 (2) ◽  
pp. 107
Author(s):  
John H. Penn

<span>Microscale Chemistry has become the method of choice for the teaching laboratories in the United States. This introspective look at the development of microscale Chemistry details the advantages prornised by microscale Chemistry during the early developmental phase of microscale in the United States. These advantages are then compared to the current usage of microscale. This comparison is designed to highlight areas for potential development of the field.</span>


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