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| Registros recuperados: 404 | |
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| Yu,C; Qiu,M; Jiang,X; Zhang,Z; Du,H; Li,Q; Xia,B; Song,X; Hu,C; Xiong,X; Yang,L; Peng,H; Chen,J; Wang,Y; Yang,C. |
| ABSTRACT Chinese indigenous chicken breeds are geographically widespread, and a total of 116 indigenous chicken breeds are listed as Chinese national genetic resources. However, these indigenous chicken breeds are facing serious challenges as declining population and germplasm degeneration because lots of commercial chicken breeds had been introduced. In this study, the genetic variations of eleven Chinese indigenous chicken breeds of Sichuan province and three commercial chicken breeds were investigated based on the partial mitochondrial DNA D-loop of 487bp in length. 147 individuals from 14 breeds were examined and 34 haplotypes were observed. Genetic diversity analysis showed that the highest haplotype diversity level was found in Dahen Chicken (DH)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chinese chicken; Mitochondrial DNA; Cluster analysis; Gene flow; Phylogeny. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400308 |
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| Kappes, H.. |
| Blood-feeding terrestrial leeches of the family Haemadipsidae are a notorious part of the invertebrate diversity in Asian and Australian rain forests. All hitherto published records of terrestrial leeches of Borneo belong to the genus Haemadipsa. Here, a second, poorly known haemadipsid genus is reported from Mount Kinabalu and Crocker Range National Park. The individuals were barcoded and compared to sequences available in GenBank. The results show that the genus Tritetrabdella has representatives in the Indochinese and the Sundaic bioregions. All six specimens from Borneo are from a single new Tritetrabdella lineage, T. kinabaluensis spec. nov. Within the Bornean lineage, two groups differing 4-5% in the COI barcoding sequence were identified. Because 1)... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Annelida; Clitellata; Ecological specialization; Genetic distance; Parasite; Phylogeny; Speciation; Tropical mountains; 42.76; 42.64. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/462900 |
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| Prajapati,Rajesh; Yadav,Shivam; Mitra,Sonali; Rai,Priya; Mishra,Rajeev; Atri,Neelam. |
| Abstract Cyanobacteria are photoautotrophic prokaryotes capable to grow in diverse ecological habitats, originated 2.5-3.5 billion years ago and were first to produce oxygen. Since then superoxide dismutases (SOD) acquired great significance due to their ability to catalyze detoxification of byproducts of oxygenic photosynthesis i.e. superoxide radicals. In the present study, we extracted information regarding SODs from species of sequenced cyanobacteria and investigated their diversity, conservation, domain structure, and evolution. 144 putative SOD homologs were identified. Unlike other protein families (ex. serine-threonine kinases) SODs are present in all cyanobacterial species reflecting their significant role in survival. However, their distribution... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Superoxide dismutases; Cyanobacteria; Comparative genomics; Phylogeny. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100422 |
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| Renault, Tristan. |
| Global mollusc production is continuously increasing and reached 12.8 million tonnes in 2004 representing 28.2 percent of the total world production valued at US$ 9.4 billions. However, cultivated molluscs may suffer from severe mortality outbreaks. Among the possible causes is the occurrence of infectious diseases due to a variety of pathogens including protozoan parasites, bacteria and viruses. Preventing and controlling diseases has become a priority for aquaculture sustainability. However, molluscs are unique in terms of health management. Molluscs like other invertebrates, lack a true adaptative immune system. Vaccination can not be used to protect them against pathogens. Moreover, molluscs are usually reared in the open sea which strongly limits the... |
| Tipo: Text |
Palavras-chave: Diagnosis; Phylogeny; Genomics; Mollluscs; Pathogens. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4574.pdf |
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| Thompson, S.M.; Tan, Y.P.; Shivas, R.G.; Neate, S.M.; Morin, L.; Bissett, A.; Aitken, E.A.B.. |
| Diaporthe (syn. Phomopsis) species are well-known saprobes, endophytes or pathogens on a range of plants. Several species have wide host ranges and multiple species may sometimes colonise the same host species. This study describes eight novel Diaporthe species isolated from live and/or dead tissue from the broad acre crops lupin, maize, mungbean, soybean and sunflower, and associated weed species in Queensland and New South Wales, as well as the environmental weed bitou bush (Chrysanthemoides monilifera subsp. rotundata) in eastern Australia. The new taxa are differentiated on the basis of morphology and DNA sequence analyses based on the nuclear ribosomal internal transcribed spacer region, and part of the translation elongation factor-1α and ß-tubulin... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Alternate weed hosts; Multi-locus; Phomopsis; Phylogeny; Taxonomy. |
| Ano: 2015 |
URL: http://www.repository.naturalis.nl/record/588699 |
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| Cavalheiro,Norma de Paula; de La Rosa,Abel; Elagin,Slava; Tengan,Fatima Mitiko; Barone,Antonio Alci. |
| INTRODUCTION: There is general consensus that hepatitis C virus is efficiently transmitted by the parenteral route, whereas data on viral transmission by sexual or non-sexual intrafamilial contact are conflicting. OBJECTIVE AND METHOD: The aim of this study was to investigate the transmission of hepatitis C virus in nine heterosexual couples. RESULT: The mean age of the couples was 43.7 years. When interviewed, all of the women denied the presence of risk factors for acquisition of the infection, whereas the cause of infection in the nine husbands could be attributed to blood transfusions in two of them (22.2%), use of intravenous and inhaled drugs in six (66.7%), acupuncture in one (11.1%), and tattooing in one (11.1%). All men and none of the women... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sexually transmitted diseases; Phylogeny; Hepatitis C. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000500001 |
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| Esteves, Kevin; Mosser, Thomas; Aujoulat, Fabien; Hervio-heath, Dominique; Monfort, Patrick; Jumas-bilak, Estelle. |
| Vibrio parahaemolyticus and Vibrio cholerae are ubiquitous to estuarine and marine environments. Thes two species found in Mediterranean coastal systems can induce infection in humans. Environmental isolates of V. cholerae (n = 109) and V. parahaemotycius (n = 89) sampled at different dates, stations and water salinities were investigated for virulence genes and by a mutilocus sequence-based analysis (MLSA). V. cholerae isolate were all ctxA negative and only one isolate of V. parahaemolyticus displayed trh2 gene. Most Sequence Types (ST) corresponded to uique ST isolated at one date or one station. Frequent recombination events were detected among different pathogenic species, V. parahaemotyticus, V. cholerae, Vibrio mimicus, and Vibrio metoecus.... |
| Tipo: Text |
Palavras-chave: Vibrio; Human pathogens; French coastal lagoons; Phylogeny; Recombination; Multi-locus sequence analysis; Virulence factor. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00274/38528/37039.pdf |
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| Sado,Ricardo Yuji; Matushima,Eliana Reiko. |
| The aim of this study was to evaluate the inflammatory response kinetics after experimental inoculation with BCG in the primitive Arius sp. fish. The BCG was applied through the intramuscular injection in the caudal peduncular region, and the samples were collected for the analyses at days 1, 3, 7, 14, 21, and 33 post-injection. Acute phase inflammatory infiltrate was characterized by the predominant mononuclear cells, intersticial edema, and muscular tissue necrosis. As the inflammatory response evolved, a large number of multinuclear giant cells were formed containing the BCG. These giant cells were positive for the S100 protein at the histochemical analysis, which demonstrate the macrofage activity, confirmed by the ultra-structural analysis showing the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Arius; Phylogeny; BCG; Inflammation; Giant cells. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500009 |
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| Arntzen, J.W.; Recuero, E.; Canestrelli, D.; Martínez-Solano, I.. |
| Species delineation remains one of the most challenging tasks in the study of biodiversity, mostly owing to the application of different species concepts, which results in contrasting taxonomic arrangements. This has important practical consequences, since species are basic units in fields like ecology and conservation biology. We here review molecular genetic evidence relevant to the systematics of toads in the Bufo bufo species group (Anura, Bufonidae). Two studies recently published in this journal (Recuero et al., MPE 62: 71–86 and Garci´a-Porta et al., MPE 63: 113–130) addressed this issue but reached opposing conclusions on the taxonomy of the group (four versus two species). In particular, allozyme data in the latter paper were interpreted as... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Bufo bufo; Bufo spinosus; Molecular systematics; Bufo verrucosissimus; Phylogeny; Allozymes; 42.82. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/470065 |
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| Lazarotto,Marília; Bovolini,Marciéli Pitorini; Muniz,Marlove Fátima Brião; Harakawa,Ricardo; Reiniger,Lia Rejane Silveira; Santos,Álvaro Figueredo dos. |
| The objective of this work was to characterize and cluster isolates of Pestalotiopsis species and to identify those that are pathogenic to pecan, based on morphological and molecular characters. Pestalotiopsis spp. isolates were identified by sequencing the internal transcribed spacer (ITS) and β?tubulin regions. Identification methods were compared to indicate the key morphological characters for species characterization. Thirteen isolates were used for the pathogenicity tests. Morphological characterization was performed using the following variables: mycelial growth rate, sporulation, colony pigmentation, and conidial length and width. Ten pathogenic isolates were identified, three as -tubulin regions. Identification methods were compared to indicate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carya illinoinensis; ?-tubulin; ITS rDNA; Morphological characters; Phylogeny; UPGMA. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000600440 |
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| Osorio,Marina Borges; Bücker-Neto,Lauro; Castilhos,Graciela; Turchetto-Zolet,Andreia Carina; Wiebke-Strohm,Beatriz; Bodanese-Zanettini,Maria Helena; Margis-Pinheiro,Márcia. |
| Environmental stresses caused by either abiotic or biotic factors greatly affect agriculture. As for soybean [Glycine max (L.) Merril], one of the most important crop species in the world, the situation is not different. In order to deal with these stresses, plants have evolved a variety of sophisticated molecular mechanisms, to which the transcriptional regulation of target-genes by transcription factors is crucial. Even though the involvement of several transcription factor families has been widely reported in stress response, there still is a lot to be uncovered, especially in soybean. Therefore, the objective of this study was to investigate the role of bHLH and trihelix-GT transcription factors in soybean responses to environmental stresses. Gene... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drought; Gene expression; Glycine max; Phylogeny; Plant-microbe interactions. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000200005 |
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| Registros recuperados: 404 | |
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