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https://www.readbyqxmd.com/read/29342452/estimated-effect-of-temperature-on-years-of-life-lost-a-retrospective-time-series-study-of-low-middle-and-high-income-regions
#1
Maquins Odhiambo Sewe, Aditi Bunker, Vijendra Ingole, Thaddaeus Egondi, Daniel Oudin Åström, David M Hondula, Joacim Rocklöv, Barbara Schumann
BACKGROUND: Numerous studies have reported a strong association between temperature and mortality. Additional insights can be gained from investigating the effects of temperature on years of life lost (YLL), considering the life expectancy at the time of death. OBJECTIVES: The goal of this work was to assess the association between temperature and YLL at seven low-, middle-, and high-income sites. METHODS: We obtained meteorological and population data for at least nine years from four Health and Demographic Surveillance Sites in Kenya (western Kenya, Nairobi), Burkina Faso (Nouna), and India (Vadu), as well as data from cities in the United States (Philadelphia, Phoenix) and Sweden (Stockholm)...
January 12, 2018: Environmental Health Perspectives
https://www.readbyqxmd.com/read/29338040/identification-and-expression-analyses-of-wrky-genes-reveal-their-involvement-in-growth-and-abiotic-stress-response-in-watermelon-citrullus-lanatus
#2
Xiaozhen Yang, Hao Li, Yongchao Yang, Yongqi Wang, Yanling Mo, Ruimin Zhang, Yong Zhang, Jianxiang Ma, Chunhua Wei, Xian Zhang
Despite identification of WRKY family genes in numerous plant species, a little is known about WRKY genes in watermelon, one of the most economically important fruit crops around the world. Here, we identified a total of 63 putative WRKY genes in watermelon and classified them into three major groups (I-III) and five subgroups (IIa-IIe) in group II. The structure analysis indicated that ClWRKYs with different WRKY domains or motifs may play different roles by regulating respective target genes. The expressions of ClWRKYs in different tissues indicate that they are involved in various tissue growth and development...
2018: PloS One
https://www.readbyqxmd.com/read/29332142/purification-and-characterization-of-a-novel-organic-solvent-tolerant-and-cold-adapted-lipase-from-psychrobacter-sp-zy124
#3
Yue Zhang, Fangling Ji, Jingyun Wang, Zhongji Pu, Bo Jiang, Yongming Bao
By screening 25 different psychrophilic strains isolated from the Arctic habitat, we isolated a strain capable of producing lipase. We identified this strain as Psychrobacter sp. ZY124 based on the amplified 16S rDNA sequence. The lipase, named as Lipase ZC12, produced from the supernatant of Psychrobacter sp. ZY124 cultured at 15 °C was purified to homogeneity by ammonium sulfate precipitation followed by Phenyl Sepharose FF gel hydrophobic chromatography. Based on the obtained amino acid sequence, Lipase ZC12 is classified as a member of the Proteus/psychrophilic subfamily of lipase family I...
January 13, 2018: Extremophiles: Life Under Extreme Conditions
https://www.readbyqxmd.com/read/29330650/a-cold-adapted-endoglucanase-from-camel-rumen-with-high-catalytic-activity-at-moderate-and-low-temperatures-an-anomaly-of-truly-cold-adapted-evolution-in-a-mesophilic-environment
#4
Kamran Khalili Ghadikolaei, Javad Gharechahi, Kamahldin Haghbeen, Kambiz Akbari Noghabi, Ghasem Hosseini Salekdeh, Hossein Shahbani Zahiri
Endoglucanases are important enzymes in plant biomass degradation. They have current and potential applications in various industrial sectors including human and animal food processing, textile, paper, and renewable biofuel production. It is assumed that the cold-active endoglucanases, with high catalytic rates in moderate and cold temperatures, can improve the cost-effectiveness of industrial processes by lowering the need for heating and, thus, energy consumption. In this study, the endoglucanase CelCM3 was procured from a camel rumen metagenome via gene cloning and expression in Escherichia coli BL21 (DE3)...
January 12, 2018: Extremophiles: Life Under Extreme Conditions
https://www.readbyqxmd.com/read/29329979/how-acute-stress-may-enhance-subsequent-memory-for-threat-stimuli-outside-the-focus-of-attention-dlpfc-amygdala-decoupling
#5
Yu Luo, Guillén Fernández, Erno Hermans, Susanne Vogel, Yu Zhang, Hong Li, Floris Klumpers
Stress-related disorders, e.g., anxiety and depression, are characterized by decreased top-down control for distracting information, as well as a memory bias for threatening information. However, it is unclear how acute stress biases mnemonic encoding and leads to prioritized storage of threat-related information even if outside the focus of attention. In the current study, healthy adults (N = 53, all male) were randomly assigned to stress induction using the socially evaluated cold-pressor test (SECPT) or a control condition...
January 9, 2018: NeuroImage
https://www.readbyqxmd.com/read/29329926/characterization-of-selenoprotein-p-cdna-of-the-antarctic-toothfish-dissostichus-mawsoni-and-its-role-under-cold-pressure
#6
Yan Li, Juntao Luo, Qiongqiong Xu, Yanwen Hou, Penglei Jiang, Yutian Sun, Hanxu Lu, Bingshe Han, Junfang Zhang
Our previous study using comparative genome analysis revealed a significant gene copy number gain of Dissostichus mawsoni selenoprotein P (Dm-SEPP) during the evolutionary radiation of Antarctic notothenioids, suggesting that Dm-SEPP contribute to this process, but the detailed structure and function of this gene product remain unclear. In the present study, the Dm-SEPP cDNA was cloned and characterized. The Dm-SEPP cDNA contains 17 selenocysteines (Sec) encoded by TGA codons and 2 typical SECIS elements located in the 3'-UTR...
January 9, 2018: Gene
https://www.readbyqxmd.com/read/29320582/thyroid-transcriptome-analysis-reveals-different-adaptive-responses-to-cold-environmental-conditions-between-two-chicken-breeds
#7
Shanshan Xie, Xukai Yang, Dehe Wang, Feng Zhu, Ning Yang, Zhuocheng Hou, Zhonghua Ning
Selection for cold tolerance in chickens is important for improving production performance and animal welfare. The identification of chicken breeds with higher cold tolerance and production performance will help to target candidates for the selection. The thyroid gland plays important roles in thermal adaptation, and its function is influenced by breed differences and transcriptional plasticity, both of which remain largely unknown in the chicken thyroid transcriptome. In this study, we subjected Bashang Long-tail (BS) and Rhode Island Red (RIR) chickens to either cold or warm environments for 21 weeks and investigated egg production performance, body weight changes, serum thyroid hormone concentrations, and thyroid gland transcriptome profiles...
2018: PloS One
https://www.readbyqxmd.com/read/29317697/physiological-response-and-microrna-expression-profiles-in-head-kidney-of-genetically-improved-farmed-tilapia-gift-oreochromis-niloticus-exposed-to-acute-cold-stress
#8
Jun Qiang, Yan T Cui, Fan Y Tao, Wen J Bao, Jie He, Xia H Li, Pao Xu, Lan Y Sun
Cold stress has a serious impact on the overwintering survival and yield of genetically improved farmed tilapia (GIFT, Oreochromis niloticus). Understanding the physiological and molecular regulation mechanisms of low-temperature adaptation is necessary to help breed new tolerant strains. The semi-lethal low temperature of juvenile GIFT at 96 h was determined as 9.4 °C. We constructed and sequenced two small RNA libraries from head kidney tissues, one for the control (CO) group and one for the 9.4 °C-stressed (LTS) group, and identified 1736 and 1481 known microRNAs (miRNAs), and 164 and 152 novel miRNAs in the CO and LTS libraries, respectively...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29317213/influence-of-strain-origin-on-osmoregulatory-and-endocrine-parameters-of-two-non-native-strains-of-atlantic-salmon-salmo-salar-l
#9
Benoît Bernard, Kevin Chantung Sobandi, Veerle Darras, Xavier Rollin, Syaghalirwa N M Mandiki, Patrick Kestemont
Non-native strains of Atlantic salmon are used in reinstatement trials where populations are extinct. Environmental cues like photoperiod and temperature are known to influence the smolting process and there is evidence of strain-, stock- or population-specific differences associated with seaward migration or smoltification. The objective of this study was to compare morphological, osmoregulatory and endorcrine features between two strains, one originating from a cold and short river in Ireland (Cong) and another from a long and warm river in France (Loire-Allier), reared under Belgian conditions in order to highlight major differences in restocking adaptability...
January 6, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29306663/projection-of-temperature-related-mortality-due-to-cardiovascular-disease-in-beijing-under-different-climate-change-population-and-adaptation-scenarios
#10
Boya Zhang, Guoxing Li, Yue Ma, Xiaochuan Pan
Human health faces unprecedented challenges caused by climate change. Thus, studies of the effect of temperature change on total mortality have been conducted in numerous countries. However, few of those studies focused on temperature-related mortality due to cardiovascular disease (CVD) or considered future population changes and adaptation to climate change. We present herein a projection of temperature-related mortality due to CVD under different climate change, population, and adaptation scenarios in Beijing, a megacity in China...
January 4, 2018: Environmental Research
https://www.readbyqxmd.com/read/29305577/the-fungus-that-came-in-from-the-cold-dry-rot-s-pre-adapted-ability-to-invade-buildings
#11
S V Balasundaram, J Hess, M B Durling, S C Moody, L Thorbek, C Progida, K LaButti, A Aerts, K Barry, I V Grigoriev, L Boddy, N Högberg, H Kauserud, D C Eastwood, I Skrede
Many organisms benefit from being pre-adapted to niches shaped by human activity, and have successfully invaded man-made habitats. One such species is the dry rot fungus Serpula lacrymans, which has a wide distribution in buildings in temperate and boreal regions, where it decomposes coniferous construction wood. Comparative genomic analyses and growth experiments using this species and its wild relatives revealed that S. lacrymans evolved a very effective brown rot decay compared to its wild relatives, enabling an extremely rapid decay in buildings under suitable conditions...
January 5, 2018: ISME Journal
https://www.readbyqxmd.com/read/29304291/genome-wide-identification-and-expression-analysis-of-calax-and-capin-gene-families-in-pepper-capsicum-annuum-l-under-various-abiotic-stresses-and-hormones-treatments
#12
Chenghao Zhang, Wenqi Dong, Zong-An Huang, MyeongCheoul Cho, Qingcang Yu, Chuanyu Wu, Chenliang Yu
Auxin plays key roles in regulating plant growth and development as well as in responses to environmental stresses. The intercellular transport of auxin is mediated by four gene families, with the ATP-binding cassette family B (ABCB), the Auxin resistant1/ like (AUX1AUX/LAX) family, the pin-formed(PIN)families, and the PIN-LIKES (PILS) family. Here, the latest assembled pepper genome was used to characterise and analyse the CaLAX and CaPIN families. Genome-wide investigations into these families, including chromosomal distributions, phytogenic relationships and intron/exon structures, were performed...
January 5, 2018: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/29301702/altitudinal-distribution-of-two-sibling-species-of-the-drosophila-tripunctata-group-in-a-preserved-tropical-forest-and-their-male-sterility-thermal-thresholds
#13
Marcos Roberto Dias Batista, Felipe Bastos Rocha, Louis Bernard Klaczko
Variation of ecophysiological traits may help to explain geographic distribution patterns of Drosophila sibling species. Many traits in ectotherms have optimal performance within specific temperature ranges. Altitudinal gradients are potentially informative for characterizing differences of sibling species distributions. We collected two sibling species of the tripunctata group - Drosophila mediopunctata (MPT) and D. unipunctata (UNI) - at eight altitudes (ranging from 593 to 1185m above sea level) located at a continuous Atlantic Rainforest reserve in consecutive years (2009-2011), with two collections at the hot-rainy season and two at the cold-dry season...
January 2018: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29300935/genetic-basis-of-photosynthetic-responses-to-cold-in-two-locally-adapted-populations-of-arabidopsis-thaliana
#14
Christopher G Oakley, Linda Savage, Samuel Lotz, G Rudd Larson, Michael F Thomashow, David M Kramer, Douglas W Schemske
Local adaptation is common, but the traits and genes involved are often unknown. Physiological responses to cold probably contribute to local adaptation in wide-ranging species, but the genetic basis underlying natural variation in these traits has rarely been studied. Using a recombinant inbred (495 lines) mapping population from locally adapted populations of Arabidopsis thaliana from Sweden and Italy, we grew plants at low temperature and mapped quantitative trait loci (QTLs) for traits related to photosynthesis: maximal quantum efficiency (Fv/Fm), rapidly reversible photoprotection (NPQfast), and photoinhibition of PSII (NPQslow) using high-throughput, whole-plant measures of chlorophyll fluorescence...
December 28, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29299265/effects-of-temperature-and-drought-on-early-life-stages-in-three-species-of-butterflies-mortality-of-early-life-stages-as-a-key-determinant-of-vulnerability-to-climate-change
#15
Michael Klockmann, Klaus Fischer
Anthropogenic climate change poses substantial challenges to biodiversity conservation. Well-documented responses include phenological and range shifts, and declines in cold but increases in warm-adapted species. Thus, some species will suffer while others will benefit from ongoing change, although the biological features determining the prospects of a given species under climate change are largely unknown. By comparing three related butterfly species of different vulnerability to climate change, we show that stress tolerance during early development may be of key importance...
December 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29299249/mitochondrial-dna-of-pre-last-glacial-maximum-red-deer-from-nw-spain-suggests-a-more-complex-phylogeographical-history-for-the-species
#16
Alba Rey-Iglesia, Aurora Grandal-d'Anglade, Paula F Campos, Anders Johannes Hansen
The major climatic oscillations that characterized the Quaternary had a great influence on the evolution and distribution of several species. During cold periods, the distribution of temperate-adapted species became fragmented with many surviving in southern refugia (Iberian, Italian, and Balkan Peninsulas). Red deer was one of the species that contracted its original range to southern refugia. Currently, two main lineages have been described for the species: western and eastern. We have analyzed fossils pre-dating the last glacial maximum (LGM) from Liñares cave (NW Spain) that belongs to the peripheral range of the western clade, and fossils from the Danish Holocene belonging to the central part of the same clade...
December 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29297313/a-compendium-and-functional-characterization-of-mammalian-genes-involved-in-adaptation-to-arctic-or-antarctic-environments
#17
Nikolay S Yudin, Denis M Larkin, Elena V Ignatieva
BACKGROUND: Many mammals are well adapted to surviving in extremely cold environments. These species have likely accumulated genetic changes that help them efficiently cope with low temperatures. It is not known whether the same genes related to cold adaptation in one species would be under selection in another species. The aims of this study therefore were: to create a compendium of mammalian genes related to adaptations to a low temperature environment; to identify genes related to cold tolerance that have been subjected to independent positive selection in several species; to determine promising candidate genes/pathways/organs for further empirical research on cold adaptation in mammals...
December 28, 2017: BMC Genetics
https://www.readbyqxmd.com/read/29288800/the-more-adaptive-to-change-the-more-likely-you-are-to-survive-protein-adaptation-in-extremophiles
#18
REVIEW
C Brininger, S Spradlin, L Cobani, C Evilia
Discovering how organisms and their proteins adapt to extreme conditions is a complicated process. Every condition has its own set of adaptations that make it uniquely stable in its environment. The purpose of our review is to discuss what is known in the extremophilic community about protein adaptations. To simplify our mission, we broke the extremophiles into three broad categories: thermophiles, halophiles and psychrophiles. While there are crossover organisms- organisms that exist in two or more extremes, like heat plus acid or cold plus pressure, most of them have a primary adaptation that is within one of these categories which tends to be the most easily identifiable one...
December 27, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29287835/sugar-compartmentation-as-an-environmental-stress-adaptation-strategy-in-plants
#19
REVIEW
Kohji Yamada, Yuriko Osakabe
The sessile nature of plants has driven their evolution to cope flexibly with ever-changing surrounding environments. The development of stress tolerance traits is complex, and a broad range of cellular processes are involved. Recent studies have revealed that sugar transporters contribute to environmental stress tolerance in plants, suggesting that sugar flow is dynamically fluctuated towards optimization of cellular conditions in adverse environments. Here, we highlight sugar compartmentation mediated by sugar transporters as an adaptation strategy against biotic and abiotic stresses...
December 26, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29284463/clinical-studies-on-core-carrier-obturation-a-systematic-review-and-meta-analysis
#20
Amy Wai-Yee Wong, Shinan Zhang, Samantha Kar-Yan Li, Chengfei Zhang, Chun-Hung Chu
BACKGROUND: This systematic review aimed to evaluate the clinical performance of core-carrier obturation in endodontic treatment. METHODS: Keywords of "(core carrier OR Thermafil) OR (cold lateral condensation OR lateral condensation) OR (warm vertical condensation OR vertical condensation) AND (obturation OR root canal filling) AND clinical study" were searched for all obtainable publications up to year 2017 in the databases of PubMed, ScienceDirect, EMBASE, Scopus and Web of Science...
December 29, 2017: BMC Oral Health
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