3,491 results match your criteria Andean Geology[Journal]


A new species of frog (Terrarana, Strabomantidae, ) from the Peruvian Andean grasslands.

PeerJ 2020 24;8:e9433. Epub 2020 Jun 24.

División de Herpetología, CORBIDI, Lima, Perú.

We describe a new, medium-sized species of terrestrial frog of the genus from a single locality in the central Andes of Peru (Departamento de Huánuco) at 3,730 meters of elevation. Phylogenetic analyses supported sp. nov. Read More

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http://dx.doi.org/10.7717/peerj.9433DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7320723PMC

Sources of Resistance to and Associated Genomic Regions in Common Bean Diversity Panels.

Front Genet 2020 16;11:475. Epub 2020 Jun 16.

Department of Plant Pathology, North Dakota State University, Fargo, ND, United States.

Common bean ( L.) production worldwide is hampered by Fusarium root rot (FRR), which is caused by . Screening for FRR resistance on a large scale is notoriously difficult and often yields inconsistent results due to variability within the environment and pathogen biology. Read More

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http://dx.doi.org/10.3389/fgene.2020.00475DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7308507PMC

Metabolomic and Gene Expression Studies Reveal the Diversity, Distribution and Spatial Regulation of the Specialized Metabolism of Yacón (, Asteraceae).

Int J Mol Sci 2020 Jun 26;21(12). Epub 2020 Jun 26.

Department of Biochemistry of Plant Secondary Metabolism, Institute of Biology, University of Hohenheim, Garbenstraße 30, 70599 Stuttgart, BW, Germany.

, also known as yacón, is an Andean crop species commercialized for its nutraceutical and medicinal properties. The tuberous roots of yacón accumulate a diverse array of probiotic and bioactive metabolites including fructooligosaccharides and caffeic acid esters. However, the metabolic diversity of yacón remains unexplored, including the site of biosynthesis and accumulation of key metabolite classes. Read More

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http://dx.doi.org/10.3390/ijms21124555DOI Listing

New Andean source of resistance to anthracnose and angular leaf spot: Fine-mapping of disease-resistance genes in California Dark Red Kidney common bean cultivar.

PLoS One 2020 29;15(6):e0235215. Epub 2020 Jun 29.

Department of Plant Sciences, University of California, Davis, California, United States of America.

Anthracnose (ANT) and angular leaf spot (ALS) caused by Colletotrichum lindemuthianum and Pseudocercospora griseola, respectively, are devastating diseases of common bean around the world. Therefore, breeders are constantly searching for new genes with broad-spectrum resistance against ANT and ALS. This study aimed to characterize the genetic resistance of California Dark Red Kidney (CDRK) to C. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0235215PLOS

Phytostimulant properties of highly stable silver nanoparticles obtained with saponin extract from Chenopodium quinoa.

J Sci Food Agric 2020 May 26. Epub 2020 May 26.

Unidad de Desarrollo Tecnológico (UDT), Universidad de Concepción, Coronel, Chile.

Background: Quinoa (Chenopodium quinoa Willd) is an Andean original pseudocereal with high nutritional value. During quinoa processing, large amounts of saponin-rich husks byproducts are obtained. Quinoa saponins, which are biologically active, could be used for various agriculture purposes. Read More

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http://dx.doi.org/10.1002/jsfa.10529DOI Listing

Partitioning of copper at the confluences of Andean rivers.

Chemosphere 2020 Jun 6;259:127318. Epub 2020 Jun 6.

Pontificia Universidad Católica de Chile, Departamento de Ingeniería Hidráulica y Ambiental, Av. Vicuña Mackenna, 4860, Macul, Santiago, Chile; Centro de Desarrollo Urbano Sustentable CEDEUS, Pontificia Universidad Católica de Chile, El Comendador, 1916, Providencia, Santiago, Chile. Electronic address:

The fate of copper (Cu) in rivers impacted by acid drainage remains poorly studied in waters with comparatively low Al and Fe concentrations. This work addresses the role of confluences in controlling the physical and chemical fate of Cu in a system with total molar ratio Cu/Al > 0.2 and Cu/Fe > 0. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127318DOI Listing

Divergence in Plant Traits and Increased Modularity Underlie Repeated Transitions Between Low and High Elevations in the Andean Genus .

Front Plant Sci 2020 4;11:714. Epub 2020 Jun 4.

Instituto de Ecología y Biodiversidad, Santiago, Chile.

Understanding why some plant lineages move from one climatic region to another is a mayor goal of evolutionary biology. In the southern Andes plant lineages that have migrated along mountain ranges tracking cold-humid climates coexist with lineages that have shifted repeatedly between warm-arid at low elevations and cold habitats at high elevations. Transitions between habitats might be facilitated by the acquisition of common traits favoring a resource-conservative strategy that copes with drought resulting from either low precipitation or extreme cold. Read More

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http://dx.doi.org/10.3389/fpls.2020.00714DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7287153PMC

An exploration of the complex biogeographical history of the Neotropical banner-wing damselflies (Odonata: Polythoridae).

BMC Evol Biol 2020 Jun 24;20(1):74. Epub 2020 Jun 24.

Federated Department of Biological Sciences. Rutgers, The State University of New Jersey, Newark, NJ, USA.

Background: The New World Tropics has experienced a dynamic landscape across evolutionary history and harbors a high diversity of flora and fauna. While there are some studies addressing diversification in Neotropical vertebrates and plants, there is still a lack of knowledge in arthropods. Here we examine temporal and spatial diversification patterns in the damselfly family Polythoridae, which comprises seven genera with a total of 58 species distributed across much of Central and South America. Read More

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http://dx.doi.org/10.1186/s12862-020-01638-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7315476PMC

Screening Andean Diversity Panel Dry Bean Lines for Resistance to Bacterial Brown Spot Disease Under Field Conditions in South Africa.

Plant Dis 2020 Jun 24:PDIS11192388RE. Epub 2020 Jun 24.

School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Scottsville 3209, Pietermaritzburg, South Africa.

Bacterial brown spot (BBS) disease caused by pv. is an important disease of dry bean ( L.), with grain yield losses of 55% reported in South Africa. Read More

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http://dx.doi.org/10.1094/PDIS-11-19-2388-REDOI Listing

Bioprospection of native psychrotolerant plant growth-promoting rhizobacteria from the Peruvian Andean Plateau soils associated with Chenopodium quinoa.

Can J Microbiol 2020 Jun 23. Epub 2020 Jun 23.

Universidad Nacional Agraria, 187163, Biology, Lima, Peru ;

The Peruvian Andean Plateau is one of the main production areas for native varieties of Chenopodium quinoa. This region is exposed to abrupt decrease of environmental temperature that affects production of crops. In this scenario, Plant Growth-Promoting (PGP) bacteria that tolerate low temperatures could be used as organic biofertilizers for the agriculture in this region. Read More

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http://dx.doi.org/10.1139/cjm-2020-0036DOI Listing

Parasite density in severe malaria in Colombia.

PLoS One 2020 23;15(6):e0235119. Epub 2020 Jun 23.

Ministerio de Salud y Protección Social, Bogotá, D.C., Colombia.

Background: Colombia has officially adopted the parasite density levels of severe malaria established by the WHO (>50,000 parasites/μl). These values have been inferred from areas of high transmission in Africa and are not consistent with the dynamics of low and unstable transmission in Colombia. The objective of this study was therefore to determine the parasite density values observed in patients with severe malaria and their distribution in the different ecoepidemiological regions of Colombia. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0235119PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7310729PMC

Mesopourous FeO@SiO-hydroxyapatite nanocomposite: Green sonochemical synthesis using strawberry fruit extract as a capping agent, characterization and their application in sulfasalazine delivery and cytotoxicity.

J Hazard Mater 2020 Jun 11;400:123140. Epub 2020 Jun 11.

Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P.O. Box 87317-51167, Iran. Electronic address:

The present study introduces a simple, biocompatible and effective drug delivery system by using mesoporous nanocomposite-based platform. To achieve this goal, mesopourous FeO@SiO-hydroxyapatite nanocomposite (mFSH) was synthesized by sonochemical process in presence of strawberry fruit extract as capping agent (mFSH-SW). The impact of various factors such as sonication time (5, 15, 30 and 45 min), capping agent (cherry (CH), strawberry (SW), malus domestica (MD), andean blackberry (AB)), pH (10, 11 and 12) and sonication power (30, 60 and 80 W) were investigated to reach optimum condition. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123140DOI Listing
June 2020
4.529 Impact Factor

(Senecioneae, Compositae), a new species from northern Chile.

PhytoKeys 2020 3;149:89-98. Epub 2020 Jun 3.

Instituto de Geografía, Facultad de Ciencias del Mar y Geografía, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2241, 2362807, Valparaíso, Chile Pontificia Universidad Católica de Valparaíso Valparaíso Chile.

is described from northern Chile. The new species is morphologically similar to the discoid caespitose Andean species and belongs to the subgroup displaying yellow corollas and yellowish anthers and style branches. It is characterized by a weak, not self-supporting stem, narrowly linear leaves, long pedunculate capitula with (17-)21 involucral bracts, and minutely papillose achenes. Read More

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http://dx.doi.org/10.3897/phytokeys.149.52297DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7286936PMC

Seed Structural Variability and Germination Capacity in Sims f. .

Front Plant Sci 2020 29;11:498. Epub 2020 May 29.

Department of Agricultural and Environmental Sciences, Tennessee State University, Nashville, TN, United States.

Purple passion fruit, Sims f. , is an important semi-perennial, fruit bearing vine originating in South America that produces a commercial tropical juice pulp for international and national consumption. Within the round purple passion fruit are a large number of membranous seed sacs each containing individual seeds. Read More

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http://dx.doi.org/10.3389/fpls.2020.00498DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7274152PMC

Author Correction: A pre-Inca pot from underwater ruins discovered in an Andean lake provides a sedimentary record of marked hydrological change.

Sci Rep 2020 Jun 16;10(1):9980. Epub 2020 Jun 16.

Paleoecological Environmental Assessment and Research Laboratory (PEARL), Department of Biology, Queen's University, Kingston, Ontario, Canada.

An amendment to this paper has been published and can be accessed via a link at the top of the paper. Read More

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http://dx.doi.org/10.1038/s41598-020-66186-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7297799PMC

Ancient genetic divergence in bumblebee catfish of the genus (Pseudopimelodidae: Siluriformes) from northwestern South America.

PeerJ 2020 29;8:e9028. Epub 2020 May 29.

Facultad de Ciencias, Escuela de Biociencias, Laboratorio de Biología Molecular y Celular, Universidad Nacional de Colombia-Sede Medellín, Medellín, Colombia.

is a Neotropical genus of bumblebee catfish, composed of four valid species occurring in both - and -Andean rivers of South America. The orogeny of the Andes has led to diversification in the genus in Colombia. This study analyzed partial sequences of mitochondrial and nuclear genes to test the hypothesis that the species, nominally recognized as and in Colombia, correspond to more than two different evolutionary lineages. Read More

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http://dx.doi.org/10.7717/peerj.9028DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7265895PMC

Identifying patterns and sources of anthropogenic trace metals in the Argentine Central Andes by using snow samples and an atmospheric dispersion model.

Environ Sci Process Impacts 2020 Jun 12. Epub 2020 Jun 12.

Facultad Regional Mendoza, Universidad Tecnológica Nacional, Mendoza, Argentina.

This study presents the first local measurements of metals in snow from the Argentine Central Andes. Cu, Pb and Zn were selected as specific tracers of anthropogenic local emission sources in the study area. Snow samples were collected during winter (2014, 2015 and 2016) at two sites with different characteristics: Punta de Vacas and Vallecitos. Read More

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http://dx.doi.org/10.1039/d0em00096eDOI Listing

Magmatic overpressures, volatile exsolution and potential explosivity of fissure eruptions inferred via dike aspect ratios.

Sci Rep 2020 Jun 10;10(1):9406. Epub 2020 Jun 10.

Graduate School of Science and Engineering for Research, The University of Toyama, Toyama, Japan.

Buoyant magmas abundant in exsolved volatiles (bubbles) drive the rapid upward-propagation of feeder dikes from magma chambers. The consequence of a feeder dike reaching the surface can result in an explosive volcanic eruption depending, partly, on the retention of volatiles. Therefore, timely detection of the vesicularity and overpressure of the magma during feeder dike ascent is critical for the prediction of the explosivity of any future eruption. Read More

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http://dx.doi.org/10.1038/s41598-020-66226-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7287056PMC

Andean Sacha Inchi ( L.) Leaf-Mediated Synthesis of CuO Nanoparticles: A Low-Cost Approach.

Bioengineering (Basel) 2020 Jun 6;7(2). Epub 2020 Jun 6.

Centro de Nanociencia y Nanotecnologia, Universidad de las Fuerzas Armadas ESPE, Av. Gral. Rumiñahui s/n, Sangolqui P.O. BOX 171-5-231B, Ecuador.

In this work, Andean sacha inchi ( L.) leaves were used to prepare monodispersed cuprous oxide (CuO) nanoparticles under heating. Visual color changes and UV-visible spectroscopy of colloidal nanoparticles showed λ at 255 nm, revealing the formation of copper oxide nanoparticles. Read More

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http://dx.doi.org/10.3390/bioengineering7020054DOI Listing

Effect of a multifunctional edible coating based on cassava starch on the shelf life of Andean blackberry.

Heliyon 2020 May 15;6(5):e03974. Epub 2020 May 15.

Universidad de Cartagena, Programa de Ingeniería de Alimentos, Research Group in Complex Fluids Engineering and Food Rheology (IFCRA), Food Packaging and Shelf Life Research Group (FP&SL), Avenida del Consulado Calle 30 No. 48 - 152, Cartagena de Indias D.T. y C., Colombia.

The blackberry is a fragile fruit with a high degree of decomposition, which limits its shelf life. The effect of an edible coating (EC) based on cassava starch, whey protein, beeswax, chitosan, glycerol, stearic acid, and glacial acetic acid on the shelf life of fruit stored at 4 °C was evaluated. The physical, chemical, physical, microbiological, and sensorial quality was evaluated, comparing with a fresh control fruit. Read More

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http://dx.doi.org/10.1016/j.heliyon.2020.e03974DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7266784PMC

Diversification history of clown tree frogs in Neotropical rainforests (Anura, Hylidae, Dendropsophus leucophyllatus group).

Mol Phylogenet Evol 2020 Jun 6;150:106877. Epub 2020 Jun 6.

Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva, Instituto Nacional de Pesquisas da Amazônia, Av. Ephigênio Sales 2239, 69060-000, Manaus, Amazonas, Brazil; Coordenação de Biodiversidade, Programa de Coleções Científicas Biológicas, Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo 2936, CEP 69067-375 Manaus, Amazonas, Brazil.

General consensus emphasizes that no single biological process can explain the patterns of species' distributions and diversification in the Neotropics. Instead, the interplay of several processes across space and time must be taken into account. Here we investigated the phylogenetic relationships and biogeographic history of tree frogs in the Dendropsophus leucophyllatus species group (Amphibia: Hylidae), which is distributed across Amazonia and the Atlantic rainforests. Read More

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http://dx.doi.org/10.1016/j.ympev.2020.106877DOI Listing
June 2020
3.916 Impact Factor

Linking isotope analysis and paleopathology: An andean perspective.

Int J Paleopathol 2020 Jun 4;29:117-127. Epub 2020 Jun 4.

Department of Anthropology, Georgia State University, PO Box 3998, Atlanta, GA 30302-3998, United States. Electronic address:

This paper reviews the significant advances in isotopic investigations in Andean South America and directs scholars to explore new theoretical and analytical directions, specifically the applicability of isotope data to paleopathology. Excellent preservation and large skeletal collections of human remains make the Central Andes ideal for biogeochemical reconstructions and advancements in isotopic methods. Our aims are twofold: first, we present a meta-analysis of stable and radiogenic isotope research in the Central Andes since 1985, and highlight those that combine analyses of isotope ratios and pathological conditions. Read More

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http://dx.doi.org/10.1016/j.ijpp.2019.11.002DOI Listing

Whole nuña bean (Phaseolus vulgaris L.) flour showed higher direct expansion during extrusion processing at relatively lower temperatures.

J Food Sci 2020 Jun 7. Epub 2020 Jun 7.

School of Food Science, Washington State University, Pullman, WA, 99164, U.S.A.

Nuña bean, also known as "popping" bean, belongs to the group of common beans (Phaseolus vulgaris, L.). Originated in Andean mountains, nuña beans is an important food crop in several South American countries, including Bolivia, Ecuador, and Peru, where it is consumed primarily as a snack. Read More

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http://dx.doi.org/10.1111/1750-3841.15180DOI Listing

Panmixia across elevation in thermally sensitive Andean dung beetles.

Ecol Evol 2020 May 12;10(9):4143-4155. Epub 2020 Apr 12.

Department of Ecology & Evolutionary Biology University of Tennessee, Knoxville Knoxville TN USA.

Janzen's seasonality hypothesis predicts that organisms inhabiting environments with limited climatic variability will evolve a reduced thermal tolerance breadth compared with organisms experiencing greater climatic variability. In turn, narrow tolerance breadth may select against dispersal across strong temperature gradients, such as those found across elevation. This can result in narrow elevational ranges and generate a pattern of isolation by environment or neutral genetic differentiation correlated with environmental variables that are independent of geographic distance. Read More

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http://dx.doi.org/10.1002/ece3.6185DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7244805PMC

Multiple drainage reversal episodes and glacial refugia in a Patagonian fish revealed by sequenced microsatellites.

Proc Biol Sci 2020 Jun 3;287(1928):20200468. Epub 2020 Jun 3.

Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada.

The rise of the southern Andes and the Quaternary glacial cycles influenced the landscape of Patagonia, affecting the phylogeographic and biogeographic patterns of its flora and fauna. Here, we examine the phylogeography of the freshwater fish, using 53 sequenced microsatellite DNA markers Fish ( 835) were collected from 16 river systems (46 locations) spanning the species range on both sides of the Andes. Eleven watersheds drain to the Pacific, five of which are trans-Andean (headwaters east of Andes). Read More

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http://dx.doi.org/10.1098/rspb.2020.0468DOI Listing

Plant life at the dry limit-Spatial patterns of floristic diversity and composition around the hyperarid core of the Atacama Desert.

PLoS One 2020 29;15(5):e0233729. Epub 2020 May 29.

Nees Institute for Biodiversity of Plants, University of Bonn, Bonn, Germany.

Extreme arid conditions in the Atacama Desert in northern Chile have created a unique vegetation almost entirely restricted to the desert margins along the coast of the Pacific Ocean and the Andean range. In this study we provide data on the desert vegetation along elevational gradients at four localities from the western Andean slopes, between 19° and 21° S. Additionally, zonation of floristic data was explored. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0233729PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7259569PMC

Genetics of the Andean bear (; Ursidae, Carnivora) in Ecuador: when the Andean Cordilleras are not an Obstacle.

Mitochondrial DNA A DNA Mapp Seq Anal 2020 Jul 29;31(5):190-208. Epub 2020 May 29.

Math, Science and Technology Department, University of Minnesota Crookston, Crookston, MN, USA.

One of the top carnivores in the Andean mountains is the Andean bear (, Ursidae), the only bear in South America. This is a flagship and key umbrella species in Ecuador because its conservation has a positive impact on the conservation of many other species in the Andes. But to preserve, first one must know the genetic characteristics of a species, among other things. Read More

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http://dx.doi.org/10.1080/24701394.2020.1769088DOI Listing

Comparison of Escherichia coli antibiotic-resistance profiles and incidence of betalactamase phenotypes in three private health facilities in Perú

Biomedica 2020 05 1;40(Supl. 1):139-147. Epub 2020 May 1.

Laboratorio de Microbiología, Hospital Nacional Docente "Madre Niño San Bartolomé", Lima, Perú.

Introduction: The appearance of multidrug-resistant and beta-lactamase producing enterobacteria in outpatient care facilities represent a public health problem in Perú. Objective: To compare the resistance profiles of uropathogenic Escherichia coli and to identify extended-spectrum beta-lactamase-producing phenotypes in three private health facilities located in the Peruvian coast, Andean and jungle regions. Materials and methods: We conducted a descriptive study on 98 urine samples from Lima (coast), Juliaca (Andean region) and Iquitos (jungle region) during 2016. Read More

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http://dx.doi.org/10.7705/biomedica.4772DOI Listing

Prevalence of Fasciola hepatica infection in Galba cousini and Galba schirazensis from an Andean region of Ecuador.

Vet Parasitol Reg Stud Reports 2020 Apr 19;20:100390. Epub 2020 Feb 19.

Instituto de Investigación en Zoonosis (CIZ), Ciudadela Universitaria, Universidad Central del Ecuador, EC170521 Quito, Ecuador; Facultad de Medicina Veterinaria y Zootecnia, Ciudadela Universitaria, Universidad Central del Ecuador, EC170521 Quito, Ecuador. Electronic address:

Some Lymnaeid snails are intermediate hosts of the liver fluke Fasciola hepatica, the causal agent of fasciolosis, a zoonotic parasitic disease. Human and livestock fasciolosis has been reported in a highland community located in the Chimborazo Province of the Ecuadorian Andes. However, no previous study has been carried out to identify which snail species act as intermediate host/s of F. Read More

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http://dx.doi.org/10.1016/j.vprsr.2020.100390DOI Listing

Blood viscosity and its determinants in the highest city in the world.

J Physiol 2020 May 22. Epub 2020 May 22.

HP2 laboratory, Université Grenoble Alpes, Inserm, CHU Grenoble Alpes, Faculté de Médecine, Grenoble, 38000, France.

Key Points: Highlanders develop unique adaptative mechanisms to chronic hypoxic exposure, including substantial haemoglobin and haematocrit increases. However, a significant proportion of populations living permanently at high altitude develop maladaptive features known as chronic mountain sickness (CMS). This study aimed to assess the effects of permanent life at high altitude on clinical and haemorheological parameters (blood viscosity and red blood cell aggregation) and to compare clinical and haemorheological parameters of dwellers from the highest city in the world according to CMS severity. Read More

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http://dx.doi.org/10.1113/JP279694DOI Listing

Would tropical climatic variations impact the genetic variability of triatomines: Rhodnius ecuadoriensis, principal vector of Chagas disease in Ecuador?

Acta Trop 2020 May 19;209:105530. Epub 2020 May 19.

Centro de Investigación para la Salud en América Latina, (CISeAL), Escuela de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Pontificia Universidad Católica del Ecuador, Quito, Ecuador; INTERTRYP, CIRAD, IRD, University of Montpellier, TA A-17/G, International Campus in Baillarguet, Montpellier, France.

Rhodnius ecuadoriensis is one of the most important vector species of Chagas disease in Ecuador. This species is distributed in the Central coast region and in the south Andean region, and an incipient speciation process between these geographical populations was previously proposed. The current population genetics study only focused on the Central coast region and analyzed 96 sylvatic specimens of R. Read More

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http://dx.doi.org/10.1016/j.actatropica.2020.105530DOI Listing

Foliar Glycine Betaine or Hydrogen Peroxide Sprays Ameliorate Waterlogging Stress in Cape Gooseberry.

Plants (Basel) 2020 May 19;9(5). Epub 2020 May 19.

Departamento de Agronomía, Facultad de Ciencias Agrarias, Universidad Nacional de Colombia, Bogotá 111321, Colombia.

Exogenous glycine betaine (GB) or hydrogen peroxide (HO) application has not been explored to mitigate waterlogging stress in Andean fruit trees. The objective of this study was to evaluate foliar GB or HO application on the physiological behavior of Cape gooseberry plants under waterlogging. Two separate experiments were carried out. Read More

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http://dx.doi.org/10.3390/plants9050644DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7285368PMC

Relationships Between Chemoreflex Responses, Sleep Quality, and Hematocrit in Andean Men and Women.

Front Physiol 2020 6;11:437. Epub 2020 May 6.

Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, United States.

Andean highlanders are challenged by chronic hypoxia and many exhibit elevated hematocrit (Hct) and blunted ventilation compared to other high-altitude populations. While many Andeans develop Chronic Mountain Sickness (CMS) and excessive erythrocytosis, Hct varies markedly within Andean men and women and may be driven by individual differences in ventilatory control and/or sleep events which exacerbate hypoxemia. To test this hypothesis, we quantified relationships between resting ventilation and ventilatory chemoreflexes, sleep desaturation, breathing disturbance, and Hct in Andean men and women. Read More

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http://dx.doi.org/10.3389/fphys.2020.00437DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7219107PMC

Wild dogs at stake: deforestation threatens the only Amazon endemic canid, the short-eared dog ().

R Soc Open Sci 2020 Apr 22;7(4):190717. Epub 2020 Apr 22.

Department of Wildlife, Fish, and Conservation Biology, University of California - Davis, Davis, CA, USA.

The persistent high deforestation rate and fragmentation of the Amazon forests are the main threats to their biodiversity. To anticipate and mitigate these threats, it is important to understand and predict how species respond to the rapidly changing landscape. The short-eared dog is the only Amazon-endemic canid and one of the most understudied wild dogs worldwide. Read More

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http://dx.doi.org/10.1098/rsos.190717DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7211836PMC

Coyote (Canis latrans) in South America: potential routes of colonization.

Integr Zool 2020 May 19. Epub 2020 May 19.

Facultad de Geografía, Universidad Autónoma del Estado de México, Instituto Literario 100, Toluca, México, 50000, México.

During the last century, the coyote (Canis latrans) has increased its distribution in Central America. Before the 1980s, it had not been recorded in Panama. New records show that coyotes have crossed the Panama Canal, indicating that continues to expand; therefore, there is a possibility that it will reach northern South America. Read More

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http://dx.doi.org/10.1111/1749-4877.12446DOI Listing

Depression in the Peruvian population and its associated factors: analysis of a national health survey.

J Affect Disord 2020 Aug 12;273:291-297. Epub 2020 May 12.

Instituto de Farmacología, Facultad de Medicina. Universidad de Buenos Aires. Buenos Aires, Argentina; Hospital General de Agudos "T. Álvarez". Buenos Aires, Argentina. Electronic address:

Background: To date, the factors associated with the presence of depression or depressive symptoms in the Peruvian population have not been described. This study aimed to determine the prevalence of clinically relevant depressive symptoms in the Peruvian population and its associated factors.

Methods: A cross-sectional analytical study of secondary data from 2018 Demographic and Family Health Survey was conducted. Read More

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http://dx.doi.org/10.1016/j.jad.2020.03.100DOI Listing

HLA study in Bolivian Quechua Amerindians from Titikaka Lake Area.

Hum Immunol 2020 Jul 14;81(7):321-322. Epub 2020 May 14.

Department of Inmunology, University Complutense, School of Medicine, Madrid, Spain.

Quechua Amerindians established Inca Empire and chose Cuzco as their capital. Their language is closely related to that of Aymara ethnic group and both of them were originated from Titikaka Lake Altiplano area. In the present study we have analyzed Bolivian Quechua HLA profile and found that it has common characters with other Andean and Pacific Amerindians (Uros, Aymaras, Lamas, Mapuches, Athabascan), and Pacific Islanders, including Easter Islanders: relatively high frequency of HLA-A*24 (:02), class II haplotypes DRB1*08:02-DQB1*04:02, and DRB1*04:03-DQB1* 03:02. Read More

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http://dx.doi.org/10.1016/j.humimm.2020.05.002DOI Listing

Examining variation in skeletal tuberculosis in a late pre-contact population from the eastern mountains of Peru.

Int J Paleopathol 2020 May 13;30:22-34. Epub 2020 May 13.

School of Human Evolution and Social Change, Arizona State University, Phoenix metropolitan area, AZ, United States.

Objective And Materials: This research evaluates the presence and chronology of tuberculosis (TB) in the northeastern highlands of Peru (CE 800-1535) through the analysis of osseous lesions from Pre-Contact Kuelap, Chachapoyas.

Methods: We examined macroscopic lesion morphology and distribution from the skeletal series (MNI = 207).

Results: We determined that skeletal evidence was highly consistent with advanced multifocal and spinal tuberculosis in 13 individuals. Read More

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http://dx.doi.org/10.1016/j.ijpp.2020.04.002DOI Listing

Long-standing LPG subsidies, cooking fuel stacking, and personal exposure to air pollution in rural and peri-urban Ecuador.

J Expo Sci Environ Epidemiol 2020 Jul 15;30(4):707-720. Epub 2020 May 15.

Department of Environmental Health Science, Columbia University Mailman School of Public Health, New York, NY, USA.

Ecuador presents a unique case study for evaluating personal air pollution exposure in a middle-income country where a clean cooking fuel has been available at low cost for several decades. We measured personal PM exposure, stove use, and participant location during a 48-h monitoring period for 157 rural and peri-urban households in coastal and Andean Ecuador. While nearly all households owned a liquefied petroleum gas (LPG) stove and used it as their primary cooking fuel, one-quarter of households utilized firewood as a secondary fuel and 10% used induction stoves secondary to LPG. Read More

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http://dx.doi.org/10.1038/s41370-020-0231-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7316622PMC

Assessment of antibiotic resistant coliforms from bioaerosol samples collected above a sewage-polluted river in La Paz, Bolivia.

Int J Hyg Environ Health 2020 Jul 5;228:113494. Epub 2020 May 5.

Centro de Investigación en Agua, Energía y Sostenibilidad, Universidad Católica Boliviana "San Pablo", Bolivia.

Antimicrobial resistance is a global health risk, and the presence of resistant bacteria in the environment may be an indicative of fecal pollution. The objective of this study has been to assess the antibiotic resistance of airborne coliforms near a highly impacted urban river that may contain high levels of fecal waste. The pilot study has been located within an Andean river basin, the Choqueyapu River basin, which flows through La Paz city in Bolivia. Read More

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http://dx.doi.org/10.1016/j.ijheh.2020.113494DOI Listing

Evolution between forest macrorefugia is linked to discordance between genetic and morphological variation in Neotropical passerines.

Mol Phylogenet Evol 2020 Aug 6;149:106849. Epub 2020 May 6.

División de Ornitología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" - CONICET, Buenos Aires, Argentina.

The central Andean rainforests and the Atlantic Forest are two similar biomes that are fully isolated by xerophytic and open-vegetation regions (the Chaco and Cerrado, respectively). Even though there is evidence suggesting that these rainforests have been connected in the past, their dynamics of connection, the geographic areas that bridged these regions, and the biological processes that have promoted diversification between them remain to be studied. In this research, we used three passerine species (Poecilotriccus plumbeiceps, Phylloscartes ventralis and Cacicus chrysopterus) as models to address whether the Andean and the Atlantic forests have acted as a refugia system (macrorefugia), and to evaluate biogeographic hypotheses of diversification and connection between them. Read More

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http://dx.doi.org/10.1016/j.ympev.2020.106849DOI Listing

Groundwater recharge and hydrodynamics of complex volcanic aquifers with a shallow saline lake: Laguna Tuyajto, Andean Cordillera of northern Chile.

Sci Total Environ 2019 Dec 27;697:134116. Epub 2019 Aug 27.

Department of Civil and Environmental Engineering, Technical University of Catalonia (UPC), Barcelona, Spain.

Estimating groundwater recharge in arid regions with seasonal snow cover, as in the Andean Altiplano of northern Chile, is important for sustainable development policies and the effective management of scarce resources in a high water demanding zone, as fragile ecosystems depends on a stable water contribution. This research aims to evaluate and quantify rainfall and snowfall contribution to aquifer recharge while assessing the factors that control the hydrodynamics in such areas, based in the knowledge of the better documented Tuyajto Lake in the Tuyajto catchment/basin. The modeling framework involves an energy balance of the snow cover, a soil water balance and a groundwater flow and chloride transport model. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.134116DOI Listing
December 2019
4.099 Impact Factor

Exploiting the diversity of tomato: the development of a phenotypically and genetically detailed germplasm collection.

Hortic Res 2020 1;7:66. Epub 2020 May 1.

1Instituto Universitario de Conservación y Mejora de la Agrodiversidad Valenciana. COMAV. Universitat Politècnica de València, Valencia, Spain.

A collection of 163 accessions, including , var. and var. , was selected to represent the genetic and morphological variability of tomato at its centers of origin and domestication: Andean regions of Peru and Ecuador and Mesoamerica. Read More

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http://dx.doi.org/10.1038/s41438-020-0291-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7192925PMC

Response to Anthracnose in a Tarwi () Collection Is Influenced by Anthocyanin Pigmentation.

Plants (Basel) 2020 May 2;9(5). Epub 2020 May 2.

DRAT, Instituto Superior de Agronomia, Universidade de Lisboa, 1349-017 Lisbon, Portugal.

Anthracnose, caused by , is a major limiting factor for lupin production. Tarwi or Andean Lupin () is generally regarded as susceptible to anthracnose, but the high protein and oil content of its seeds raise interest in promoting its cultivation in Europe. In this study we evaluated the response to anthracnose of 10 tarwi accessions contrasting in anthocyanin pigmentation, by comparison to white lupin (), using a contemporary Portuguese fungal isolate. Read More

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http://dx.doi.org/10.3390/plants9050583DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7284827PMC

Assessment of Shape Variation Patterns in (Klug 1834) (Hemiptera: Reduviidae: Triatominae): A First Report in Populations from Bolivia.

Insects 2020 Apr 30;11(5). Epub 2020 Apr 30.

Laboratorio de Ecología y Morfometría Evolutiva, Centro de Investigación de Estudios Avanzados del Maule, Universidad Católica del Maule, Talca 3466706, Chile.

The morphological variations of four populations of geographically isolated located in the area of inter-Andean valleys and Chaco of Chuquisaca, Bolivia, were evaluated. Fifty-three females and sixty-one males were collected in the peri-domicile and analyzed with geometric morphometrics tools to study the patterns of the head and wing shape variation. The principal component analysis and canonical variate analysis revealed morphological variations between the populations studied, which were then confirmed by the permutation test of the differences between populations using Mahalanobis and Procustes distances. Read More

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http://dx.doi.org/10.3390/insects11050274DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7290822PMC

The highest kingdom of Anolis: Thermal biology of the Andean lizard Anolis heterodermus (Squamata: Dactyloidae) over an elevational gradient in the Eastern Cordillera of Colombia.

J Therm Biol 2020 Apr 28;89:102498. Epub 2019 Dec 28.

Grupo de Morfología y Ecología Evolutiva, Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Apartado 7495, Bogotá, D.C, Colombia.

Vertebrate ectotherms may deal with changes of environmental temperatures by behavioral and/or physiological mechanisms. Reptiles inhabiting tropical highlands face extreme fluctuating daily temperatures, and extreme values and intervals of fluctuations vary with altitude. Anolis heterodermus occurs between 1800 m to 3750 m elevation in the tropical Andes, and is the Anolis species found at the highest altitude known. Read More

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http://dx.doi.org/10.1016/j.jtherbio.2019.102498DOI Listing

Purification and characterization of a novel trypsin inhibitor from Solanum tuberosum subsp. andigenum var. overa: Study of the expression levels and preliminary evaluation of its antimicrobial activity.

Int J Biol Macromol 2020 Apr 28. Epub 2020 Apr 28.

Centro de Investigación de Proteínas Vegetales (CIProVe), Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de la Plata, 47 y 115s/N, B1900AVW La Plata, Buenos Aires, Argentina. Electronic address:

Protease inhibitors (PIs) have been traditionally recognized by their potential biomedical application in events with exacerbation of endogenous proteases activity. Plant PIs have gained interest as naturally occurring molecules, which usually show lower environmental impact residual toxicity than synthetic compounds. In this work, we isolated, cloned, expressed and purified a novel trypsin inhibitor from S. Read More

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http://dx.doi.org/10.1016/j.ijbiomac.2020.04.217DOI Listing

Temporal changes in metal concentrations in Andean condor feathers: a potential influence of volcanic activity.

Environ Sci Pollut Res Int 2020 Apr 30. Epub 2020 Apr 30.

Area of Toxicology, Department of Health Sciences, Faculty of Veterinary Medicine, University of Murcia, 30100, Murcia, Spain.

Geothermal activities (e.g., volcanic eruptions) represent one of the most important natural sources of metal emissions (heavy metals and metalloids). Read More

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http://dx.doi.org/10.1007/s11356-020-08981-0DOI Listing

Downstream changes in river avulsion style are related to channel morphology.

Nat Commun 2020 Apr 30;11(1):2116. Epub 2020 Apr 30.

Department of Geography, Indiana University, 701 E Kirkwood Avenue, Bloomington, IN, 47405, USA.

One of the most dramatic events in river environments is the natural diversion, or avulsion, of a channel across its floodplain. Though rarely witnessed, avulsions can cause massive floods, and over geologic time they create most of the fluvial stratigraphic record. Avulsions exhibit behavior ranging from reoccupying abandoned channels to constructing new channels and splay complexes. Read More

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http://dx.doi.org/10.1038/s41467-020-15859-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7192919PMC

Genomic data reveal international lineages of critical priority Escherichia coli harbouring wide resistome in Andean condors (Vultur gryphus Linnaeus, 1758).

Mol Ecol 2020 May 31;29(10):1919-1935. Epub 2020 May 31.

Department of Clinical Analysis, Faculty of Pharmacy, University of São Paulo, Sao Paulo, Brazil.

Critical priority pathogens have globally disseminated beyond clinical settings, thereby threatening wildlife. Andean Condors (Vultur gryphus) are essential for ecosystem health and functioning, but their populations are globally near threatened and declining due to anthropogenic activities. During a microbiological and genomic surveillance study of critical priority antibiotic-resistant pathogens, we identified pandemic lineages of multidrug-resistant extended-spectrum β-lactamase (ESBL)-producing Escherichia coli colonizing Andean Condors admitted at two wildlife rehabilitation centres in South America. Read More

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http://dx.doi.org/10.1111/mec.15455DOI Listing