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https://www.readbyqxmd.com/read/28231417/genetic-and-genomic-evidence-of-niche-partitioning-and-adaptive-radiation-in-mountain-pine-beetle-fungal-symbionts
#1
Dario I Ojeda Alayon, Clement K M Tsui, Nicolas Feau, Arnaud Capron, Braham Dhillon, Yiyuan Zhang, Sepideh Massoumi Alamouti, Celia K Boone, Allan L Carroll, Janice E K Cooke, Amanda D Roe, Felix A H Sperling, Richard C Hamelin
Bark beetles form multipartite symbiotic associations with blue stain fungi (Ophiostomatales, Ascomycota). These symbionts play an important role during the beetle's life cycle by providing nutritional supplementation, overcoming tree defenses and modifying host tissues to favor brood development. The maintenance of stable multipartite symbioses with seemingly less competitive symbionts in similar habitats is of fundamental interest to ecology and evolution. We tested the hypothesis that the coexistence of three fungal species associated with the mountain pine beetle is the result of niche partitioning and adaptive radiation using SNP genotyping coupled with genotype-environment association analysis and phenotypic characterization of growth rate under different temperatures...
February 23, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28228730/a-signature-of-circulating-micrornas-predicts-the-susceptibility-of-acute-mountain-sickness
#2
Bao Liu, He Huang, Gang Wu, Gang Xu, Bing-Da Sun, Er-Long Zhang, Jian Chen, Yu-Qi Gao
Background: Acute mountain sickness (AMS) is a common disabling condition in individuals experiencing high altitudes, which may progress to life-threatening high altitude cerebral edema. Today, no established biomarkers are available for prediction the susceptibility of AMS. MicroRNAs emerge as promising sensitive and specific biomarkers for a variety of diseases. Thus, we sought to identify circulating microRNAs suitable for prediction the susceptible of AMS before exposure to high altitude. Methods: We enrolled 109 healthy man adults and collected blood samples before their exposure to high altitude...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28228688/two-new-species-and-a-new-combination-in-protium-burseraceae-from-costa-rica
#3
Daniel Santamaría-Aguilar, Laura P Lagomarsino
Two new species of Protium (Burseraceae) are described and illustrated: Protium aguilariisp. nov., from the Pacific slope of the Osa Peninsula, Puntarenas Province, Costa Rica; and Protium hammeliisp. nov., from wet forests on the Caribbean slopes of Nicaragua and Costa Rica. In addition, Protium brenesiicomb. nov., is proposed as a new combination based on Trichilia brenesii, a name that was based on a specimen collected with flowers in the mountains near San Ramón, Alajuela Province, Costa Rica. It is compared with Protium costaricense, a similar species with which it has been confused for more than 90 years...
2017: PhytoKeys
https://www.readbyqxmd.com/read/28228683/eutrema-salsugineum-cruciferae-new-to-mexico-a-surprising-generic-record-for-the-flora-of-middle-america
#4
Dmitry A German, Marcus A Koch
The paper reports Eutrema salsugineum as a novelty to the flora of Mexico and Middle America in general. The finding stands ca. 1600 km apart from the closest known locality in the Rocky Mountains of Colorado, USA. The species is considered native to NW Mexico and its late discovery in the region is presumably explained by its tiny habit, early flowering time, and subephemeral life cycle. The phylogenetic position of this Mexican population in a haplotype network based on the chloroplast DNA fragment psbA-trnH confirms this hypothesis and also suggests, in contrast to the previously held viewpoint, multiple colonizations of North American continent from Asia...
2017: PhytoKeys
https://www.readbyqxmd.com/read/28226287/to-make-a-molehill-out-of-a-mountain-an-erp-study-on-cognitive-reappraisal-of-negative-pictures-in-children-with-and-without-adhd
#5
Valerie Van Cauwenberge, Rachida El Kaddouri, Karel Hoppenbrouwers, Jan R Wiersema
OBJECTIVE: We investigated cognitive reappraisal in children with ADHD by means of the late positive potential (LPP) and self-report ratings. We expected diminished LPP modulation following reappraisal and lower self-report scores in children with ADHD. METHODS: Eighteen children with ADHD and 24 typically developing (TD) children (8-12years) performed a cognitive reappraisal task, while EEG was recorded, and filled out a questionnaire on cognitive reappraisal. RESULTS: Despite the lack of main reappraisal effects on LPP, the LPP was less positively modulated during reappraisal in ADHD compared to TD children...
January 30, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28226263/comparing-impacts-between-formal-and-informal-recreational-trails
#6
Catherine Marina Pickering, Patrick Norman
Globally there are hundreds of thousands of kilometres of recreational trails traversing natural areas of high conservation value: but what are their impacts and do impacts differ among trails? We compared the effects of four common types of recreational trails [(1) narrow and (2) medium width informal bare earth trails and (3) gravel and (4) tarmac/concrete formal trails] on vegetation adjacent to trails in a high conservation value plant community that is popular for mountain biking and hiking in Australia...
February 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28224712/a-novel-astrovirus-associated-with-encephalitis-and-ganglionitis-in-domestic-sheep
#7
F Pfaff, K Schlottau, S Scholes, A Courtenay, B Hoffmann, D Höper, M Beer
In June 2013, a 4-year-old Welsh Mountain ewe and in March 2014 a 10-day-old lamb of the same breed and the same flock presented progressive neurological signs including depressed sensorium, tremor, and unusual behaviour. Neuropathological examination of the brain and spinal cord detected non-suppurative polioencephalomyelitis and dorsal root ganglionitis, characteristic of a neurotropic viral agent in both sheep. Metagenomic analysis of different tissue samples from both animals identified a novel Ovine Astrovirus (OvAstV)...
February 22, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28224062/correction-hydration-status-as-a-predictor-of-high-altitude-mountaineering-performance
#8
Eric Ladd, Katherine M Shea, Patrick Bagley, Sean Rundell, Paul S Auerbach, Elizabeth A Pirrotta, Ewen Wang, Grant S Lipman
[This corrects the article DOI: 10.7759/cureus.918.].
February 16, 2017: Curēus
https://www.readbyqxmd.com/read/28222809/indigenous-knowledge-and-use-of-lichens-by-the-lichenophilic-communities-of-the-nepal-himalaya
#9
Shiva Devkota, Ram Prasad Chaudhary, Silke Werth, Christoph Scheidegger
BACKGROUND: The aim of the study was to document the prevailing indigenous knowledge and various uses of lichens among the lichenophilic communities in the hills and mountainous settlements of Nepal. METHODS: Ethnic uses were recorded during twelve field trips, each of roughly 15 days in three consecutive years, through direct questionnaires administered to 190 respondents. Lichen samples were identified applying microscopic observation and thin layer chromatography (TLC)...
February 21, 2017: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/28222724/financial-barriers-and-coping-strategies-a-qualitative-study-of-accessing-multidrug-resistant-tuberculosis-and-tuberculosis-care-in-yunnan-china
#10
C Hutchison, M S Khan, J Yoong, X Lin, R J Coker
BACKGROUND: Tuberculosis (TB) and multidrug-resistance tuberculosis (MDR-TB) pose serious challenges to global health, particularly in China, which has the second highest case burden in the world. Disparities in access to care for the poorest, rural TB patients may be exacerbated for MDR-TB patients, although this has not been investigated widely. We examine whether certain patient groups experience different barriers to accessing TB services, whether there are added challenges for patients with MDR-TB, and how patients and health providers cope in Yunnan, a mountainous province in China with a largely rural population and high TB burden...
February 22, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28221107/use-of-mass-participation-outdoor-events-to-assess-human-exposure-to-tickborne-pathogens
#11
Jessica L Hall, Kathrin Alpers, Kevin J Bown, Stephen J Martin, Richard J Birtles
Mapping the public health threat of tickborne pathogens requires quantification of not only the density of infected host-seeking ticks but also the rate of human exposure to these ticks. To efficiently sample a high number of persons in a short time, we used a mass-participation outdoor event. In June 2014, we sampled ≈500 persons competing in a 2-day mountain marathon run across predominantly tick-infested habitat in Scotland. From the number of tick bites recorded and prevalence of tick infection with Borrelia burgdoferi sensu lato and B...
March 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28220873/response-of-rhizosphere-soil-microbial-to-deyeuxia-angustifolia-encroaching-in-two-different-vegetation-communities-in-alpine-tundra
#12
Lin Li, Ming Xing, Jiangwei Lv, Xiaolong Wang, Xia Chen
Deyeuxia angustifolia (Komarov) Y. L Chang is an herb species originating from the birch forests in the Changbai Mountain. Recently, this species has been found encroaching into large areas in the western slopes of the alpine tundra in the Changbai Mountain, threatening the tundra ecosystem. In this study, we systematically assessed the response of the rhizosphere soil microbial to D. angustifolia encroaching in alpine tundra by conducting experiments for two vegetation types (shrubs and herbs) by real-time PCR and Illumina Miseq sequencing methods...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28219302/relations-between-quantitative-ultrasound-assessment-of-calcaneus-and-grip-and-key-pinch-power-in-japanese-mountain-village-residents
#13
Ayako Nagai, Tsuyoshi Tajika, Atsushi Yamamoto, Chisa Okura, Saeko Kanazawa, Kenji Takagishi
PURPOSE: It seems to be important to recognize bone health condition using a simple method in Japanese super-aged society. The aim of our study was to investigate whether grip and key pinch strength were associated with bone quality. METHODS: Medical examinations were conducted of 337 adult residents (123 men, 214 women; average age of 64.7 years) of a mountain village. Bilateral grip and key pinch strength were measured. The sound of speed (SOS) of calcaneus was assessed using an ultrasound bone densitometer...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28219092/-analysis-of-cardiovascular-risk-factors-in-young-backcountry-skiers-in-the-gotthard-region
#14
Benedikt Andreas Gasser
Background and Objectives Although the frequency of cardiovascular events, especially the end manifestation of myocardial infarction, has decreased in recent years, cardiovascular disease continues to be one of the most frequent illnesses. Also it is known that the cardiac system sustains more stress at high altitudes than it does at intermediate altitudes. This leads to the question if young alpinists should undergo cardiac evaluation before setting out for a trip to the Himalayas or the Andes Mountains...
February 20, 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/28216727/high-altitude-dermatology
#15
Lt Col G K Singh
Approximately, 140 million people worldwide live permanently at high altitudes (HAs) and approximately another 40 million people travel to HA area (HAA) every year for reasons of occupation, sports or recreation. In India, whole of Ladakh region, part of Northwest Kashmir, Northern part of Sikkim and Tenga valley of Arunachal are considered inhabited areas of HAA. The low quantity of oxygen, high exposure of ultraviolet (UV) light, very low humidity, extreme subzero temperature in winter, high wind velocity, make this region difficult for lowlanders as well as for tourists...
January 2017: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/28215801/differences-in-dom-of-rewetted-and-natural-peatlands-results-from-high-field-ft-icr-ms-and-bulk-optical-parameters
#16
Peter Herzsprung, Katja Osterloh, Wolf von Tümpling, Mourad Harir, Norbert Hertkorn, Philippe Schmitt-Kopplin, Ralph Meissner, Sabine Bernsdorf, Kurt Friese
Peatlands can be a potential source of dissolved organic matter (DOM) in fresh water catchment areas. The quantity and quality of DOM can differ between pristine, degraded and rewetted peatlands. Due to the large scale and continuing losses of peatlands, their conservation and restoration has been increasingly emphasized. Mostly rewetting measures are required to improve the hydrology of damaged peatlands, which is a precondition for the resettlement of peat-forming plant species. Thus, in term of DOM, there is a special need to understand how rewetting measures affect DOM characteristics and concentrations...
February 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28215572/plastid-phylogenomics-and-adaptive-evolution-of-gaultheria-series-trichophyllae-ericaceae-a-clade-from-sky-islands-of-the-himalaya-hengduan-mountains
#17
Ming-Ying Zhang, Peter W Fritsch, Peng-Fei Ma, Hong Wang, Lu Lu, De-Zhu Li
Gaultheria series Trichophyllae Airy Shaw is an angiosperm clade of high-alpine shrublets endemic to the Himalaya-Hengduan Mountains and characterized by recent species divergence and convergent character evolution that has until recently caused much confusion in species circumscription. Although multiple DNA sequence regions have been employed previously, phylogenetic relationships among species in the group have remained largely unresolved. Here we examined the effectiveness of plastid genome for improving phylogenetic resolution within the G...
February 16, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28214942/an-analytical-investigation-of-ozone-episodes-in-bangu-rio-de-janeiro
#18
Claudio Gabriel Pinheiro Geraldino, Eduardo Monteiro Martins, Cleyton Martins da Silva, Graciela Arbilla
This study investigated the potential factors that contribute to frequent high levels of ozone as well as ozone episodes in Bangu, one of the most critical areas in the city of Rio de Janeiro regarding ozone levels. For 74 days in a two-year period (10.3%), the national air quality standard was exceeded. For the same period, a total of 378 days (51.8%) had ozone concentrations that were between 80 and 160 µg m(-3). A statistical analysis of pollutant concentrations and meteorological data as well as a kinetic and mechanistic analysis of VOC reactivity showed that the high ozone concentrations did not seem to be closely related to local emissions but, rather, were related to pollutant transport and triggered by photochemical activity...
February 18, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28214933/findings-from-american-indian-needs-assessments
#19
Linda Burhansstipanov, Linda U Krebs, Lisa Harjo, Kathleen Ragan, Judith Salmon Kaur, Vickie Marsh, Dewey Painter
Because of decreased access and dismal survival rates, strategies need to be developed to increase cancer awareness and facilitate cancer prevention, early detection, and screening activities within American Indian (AI) populations. The purpose of this study was to develop a locally tailored needs assessment to collect cancer prevention, control, and risk factor information and knowledge, attitude, and perceived behavior (hereafter referred to as "needs assessment") data from 500 community members living in 3 geographically diverse settings: the Southeastern USA, the Rocky Mountain region, and the Northern Plains...
February 18, 2017: Journal of Cancer Education: the Official Journal of the American Association for Cancer Education
https://www.readbyqxmd.com/read/28213545/antifungal-bacteria-on-woodland-salamander-skin-exhibit-high-taxonomic-diversity-and-geographic-variability
#20
Carly R Muletz-Wolz, Graziella V DiRenzo, Stephanie A Yarwood, Evan H Campbell Grant, Robert C Fleischer, Karen R Lips
Diverse bacteria inhabit amphibian skin, some of which inhibit growth of the fungal pathogen, Batrachochytrium dendrobatidis (Bd). Yet, there has been no systematic survey of anti-Bd bacteria across localities, species and elevations. This is important given geographic and taxonomic variation in amphibian susceptibility to Bd. Our sites were within the Appalachian Mountains where previous sampling indicated low Bd prevalence. We determined the number and identity of anti-Bd bacteria on 61 Plethodon salamanders (37 P...
February 17, 2017: Applied and Environmental Microbiology
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