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https://www.readbyqxmd.com/read/28922774/crop-model-assisted-phenomics-and-genome-wide-association-study-for-climate-adaptation-of-indica-rice-1-phenology
#1
Michael Dingkuhn, Richard Pasco, Julie M Pasuquin, Jean Damo, Jean-Christophe Soulié, Louis-Marie Raboin, Julie Dusserre, Abdoulaye Sow, Baboucarr Manneh, Suchit Shrestha, Alpha Balde, Tobias Kretzschmar
Phenology and time of flowering are crucial determinants of rice adaptation to climate variation. A previous study characterized flowering responses of 203 diverse indica rices (the ORYTAGE panel) to ten environments in Senegal (six sowing dates) and Madagascar (two years and two altitudes) under irrigation in the field. This study used the physiological phenology model RIDEV V2 to heuristically estimate component traits of flowering such as cardinal temperatures (base temperature (Tbase) and optimum temperature), basic vegetative phase, photoperiod sensitivity and cold acclimation, and to conduct a genome-wide association study for these traits using 16 232 anonymous single-nucleotide polymorphism (SNP) markers...
July 10, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28922773/crop-model-assisted-phenomics-and-genome-wide-association-study-for-climate-adaptation-of-indica-rice-2-thermal-stress-and-spikelet-sterility
#2
Michael Dingkuhn, Richard Pasco, Julie Mae Pasuquin, Jean Damo, Jean-Christophe Soulié, Louis-Marie Raboin, Julie Dusserre, Abdoulaye Sow, Baboucarr Manneh, Suchit Shrestha, Tobias Kretzschmar
Low night and high day temperatures during sensitive reproductive stages cause spikelet sterility in rice. Phenotyping of tolerance traits in the field is difficult because of temporal interactions with phenology and organ temperature differing from ambient. Physiological models can be used to separate these effects. A 203-accession indica rice diversity panel was phenotyped for sterility in ten environments in Senegal and Madagascar and climate data were recorded. Here we report on sterility responses while a companion study reported on phenology...
July 10, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28919880/non-mammalian-vertebrates-distinct-models-to-assess-the-role-of-ion-gradients-in-energy-expenditure
#3
REVIEW
Caroline E Geisler, Kyle P Kentch, Benjamin J Renquist
Animals store metabolic energy as electrochemical gradients. At least 50% of mammalian energy is expended to maintain electrochemical gradients across the inner mitochondrial membrane (H(+)), the sarcoplasmic reticulum (Ca(++)), and the plasma membrane (Na(+)/K(+)). The potential energy of these gradients can be used to perform work (e.g., transport molecules, stimulate contraction, and release hormones) or can be released as heat. Because ectothermic species adapt their body temperature to the environment, they are not constrained by energetic demands that are required to maintain a constant body temperature...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28915548/a-spatio-temporal-statistical-model-of-maximum-daily-river-temperatures-to-inform-the-management-of-scotland-s-atlantic-salmon-rivers-under-climate-change
#4
Faye L Jackson, Robert J Fryer, David M Hannah, Colin P Millar, Iain A Malcolm
The thermal suitability of riverine habitats for cold water adapted species may be reduced under climate change. Riparian tree planting is a practical climate change mitigation measure, but it is often unclear where to focus effort for maximum benefit. Recent developments in data collection, monitoring and statistical methods have facilitated the development of increasingly sophisticated river temperature models capable of predicting spatial variability at large scales appropriate to management. In parallel, improvements in temporal river temperature models have increased the accuracy of temperature predictions at individual sites...
September 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28914739/hypothermic-neuroprotections-in-the-brain-of-an-echolocation-bat-hipposideros-terasensis
#5
Ching-Lung Lin, Chun-Jen Hsiao, Chih-Hsiang Hsu, Sheue-Er Wang, Philip H-S Jen, Chung-Hsin Wu
The present study aimed to investigate how bats protect their brain in a hypothermic situation. Formosan leaf-nosed bats (Hipposideros terasensis) were used in this study and treated under three conditions: room temperature (25±1°C), low temperature (4±1°C), and hibernation. The reactive oxygen species (ROS) levels in the blood and apoptosis-related proteins in the brain tissue were assessed and then compared among those bats under three conditions. Our results showed that the blood ROS levels of bats treated under conditions of low temperature and hibernation were significantly reduced compared with bats treated under the condition of room temperature...
October 18, 2017: Neuroreport
https://www.readbyqxmd.com/read/28906432/total-power-radiometer-for-medical-sensor-applications-using-matched-and-mismatched-noise-sources
#6
Woojin Park, Jinho Jeong
This paper presents a simple total power radiometer to noninvasively measure the temperature of the human body. The proposed 3-GHz radiometer consists of an antenna collecting the noise power generated by a target, a low-noise and high-gain receiver amplifying the noise power, and a detector converting the noise power to voltage. A single-pole-triple-throw (SP3T) switch is placed between the antenna and the receiver, while a personal computer is used to control the SP3T switch, collect and process the data such as detector output voltages and physical temperatures of the reference noise sources and the target...
September 14, 2017: Sensors
https://www.readbyqxmd.com/read/28904761/too-hot-to-die-the-effects-of-vegetation-shading-on-past-present-and-future-activity-budgets-of-two-diurnal-skinks-from-arid-australia
#7
Annegret Grimm-Seyfarth, Jean-Baptiste Mihoub, Klaus Henle
Behavioral thermoregulation is an important mechanism allowing ectotherms to respond to thermal variations. Its efficiency might become imperative for securing activity budgets under future climate change. For diurnal lizards, thermal microhabitat variability appears to be of high importance, especially in hot deserts where vegetation is highly scattered and sensitive to climatic fluctuations. We investigated the effects of a shading gradient from vegetation on body temperatures and activity timing for two diurnal, terrestrial desert lizards, Ctenotus regius, and Morethia boulengeri, and analyzed their changes under past, present, and future climatic conditions...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28904741/complete-genome-of-arthrobacter-alpinus-strain-r3-8-bioremediation-potential-unraveled-with-genomic-analysis
#8
Wah-Seng See-Too, Robson Ee, Yan-Lue Lim, Peter Convey, David A Pearce, Taznim Begam Mohd Mohidin, Wai-Fong Yin, Kok Gan Chan
Arthrobacter alpinus R3.8 is a psychrotolerant bacterial strain isolated from a soil sample obtained at Rothera Point, Adelaide Island, close to the Antarctic Peninsula. Strain R3.8 was sequenced in order to help discover potential cold active enzymes with biotechnological applications. Genome analysis identified various cold adaptation genes including some coding for anti-freeze proteins and cold-shock proteins, genes involved in bioremediation of xenobiotic compounds including naphthalene, and genes with chitinolytic and N-acetylglucosamine utilization properties and also plant-growth-influencing properties...
2017: Standards in Genomic Sciences
https://www.readbyqxmd.com/read/28902878/continuous-selection-pressure-to-improve-temperature-acclimation-of-tisochrysis-lutea
#9
Hubert Bonnefond, Ghjuvan Grimaud, Judith Rumin, Gaël Bougaran, Amélie Talec, Manon Gachelin, Marc Boutoute, Eric Pruvost, Olivier Bernard, Antoine Sciandra
Temperature plays a key role in outdoor industrial cultivation of microalgae. Improving the thermal tolerance of microalgae to both daily and seasonal temperature fluctuations can thus contribute to increase their annual productivity. A long term selection experiment was carried out to increase the thermal niche (temperature range for which the growth is possible) of a neutral lipid overproducing strain of Tisochrysis lutea. The experimental protocol consisted to submit cells to daily variations of temperature for 7 months...
2017: PloS One
https://www.readbyqxmd.com/read/28895137/bringing-radical-behaviorism-to-revolutionary-brazil-and-back-fred-keller-s-personalized-system-of-instruction-and-cold-war-engineering-education
#10
Atsushi Akera
This article traces the shifting epistemic commitments of Fred S. Keller and his behaviorist colleagues during their application of Skinnerian radical behaviorism to higher education pedagogy. Building on prior work by Alexandra Rutherford and her focus on the successive adaptation of Skinnerian behaviorism during its successive applications, this study utilizes sociologist of science Karin Knorr Cetina's concept of epistemic cultures to more precisely trace the changes in the epistemic commitments of a group of radical behaviorists as they shifted their focus to applied behavioral analysis...
September 12, 2017: Journal of the History of the Behavioral Sciences
https://www.readbyqxmd.com/read/28893251/identification-and-immobilization-of-a-novel-cold-adapted-esterase-and-its-potential-for-bioremediation-of-pyrethroid-contaminated-vegetables
#11
Xinjiong Fan, Weiqu Liang, Yanfang Li, He Li, Xiaolong Liu
BACKGROUND: Pyrethroids are potentially harmful to living organisms and ecosystems. Thus, concerns have been raised about pyrethroid residues and their persistence in agricultural products. To date, although several pyrethroid-hydrolyzing enzymes have been cloned, very few reports are available on pyrethroid-hydrolyzing enzymes with cold adaptation, high hydrolytic activity and good reusability, indispensable properties in practical bioremediation of pyrethroid-contaminated vegetables...
September 11, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28892241/seasonal-variations-in-the-profile-of-main-phospholipids-in-mytilus-galloprovincialis-mussels-a-study-by-hydrophilic-interaction-liquid-chromatography-electrospray-ionization-fourier-transform-mass-spectrometry
#12
Laura Facchini, Ilario Losito, Tommaso R I Cataldi, Francesco Palmisano
A systematic characterization of phosphatidylcholines (PC) and phosphatidylethanolamines (PE) in mussels of sp. Mytilus galloprovincialis was performed by high efficiency Hydrophilic Interaction LIquid Chromatography (HILIC) combined with ElectroSpray Ionization (ESI) and Fourier-Transform Mass Spectrometry (FTMS), based on a quadrupole-Orbitrap hybrid spectrometer. FTMS/MS experiments under high-collisional energy dissociation (HCD) conditions, complemented by low energy collisionally induced dissociation (CID) MS(n) (n = 2,3) experiments, performed in a linear ion trap mass spectrometer, were exploited for structural elucidation purposes...
September 11, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28886453/patterns-of-low-temperature-induced-accumulation-of-dehydrins-in-rosaceae-crops-evidence-for-post-translational-modification-in-apple
#13
Perttu Haimi, Jurgita Vinskienė, Inga Stepulaitienė, Danas Baniulis, Gražina Stanienė, Jūratė Bronė Šikšnianienė, Rytis Rugienius
Important crop plants of Rosaceae family are often damaged during winter due to the lack of acclimation and cold hardiness. One of the cellular responses of plants to cold stress is the accumulation of dehydrin proteins. We studied the expression of dehydrins in several Rosaceae species during low temperature treatment in vitro. Microshoots of Pyrus communis, Malus×domestica, Fragaria vesca, Fragaria×ananassa, Prunus cerasus and Prunus avium cultivars were grown in low temperature conditions. Genotype -specific accumulation of dehydrins was detected by immunoblot analysis of the extracted proteins...
August 31, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28882448/paenibacillus-ihbetae-sp-nov-a-cold-adapted-antimicrobial-producing-bacterium-isolated-from-high-altitude-suraj-tal-lake-in-the-indian-trans-himalayas
#14
Shashi Kiran, Mohit Kumar Swarnkar, Shanmugam Mayilraj, Rupinder Tewari, Arvind Gulati
The assessment of bacterial diversity and bioprospection of the high-altitude lake Suraj Tal microorganisms for potent antimicrobial activities revealed the presence of two Gram-stain-variable, endospore-forming, rod-shaped, aerobic bacteria, namely IHBB 9852(T) and IHBB 9951. Phylogenetic analysis based on 16S rRNA gene sequence showed the affiliation of strains IHBB 9852(T) and IHBB 9951 within the genus Paenibacillus, exhibiting the highest sequence similarity to Paenibacillus lactis DSM 15596(T) (97.8% and 97...
August 16, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/28878753/conserved-tram-domain-functions-as-an-archaeal-cold-shock-protein-via-rna-chaperone-activity
#15
Bo Zhang, Lei Yue, Liguang Zhou, Lei Qi, Jie Li, Xiuzhu Dong
Cold shock proteins (Csps) enable organisms to acclimate to and survive in cold environments and the bacterial CspA family exerts the cold protection via its RNA chaperone activity. However, most Archaea do not contain orthologs to the bacterial csp. TRAM, a conserved domain among RNA modification proteins ubiquitously distributed in organisms, occurs as an individual protein in most archaeal phyla and has a structural similarity to Csp proteins, yet its biological functions remain unknown. Through physiological and biochemical studies on four TRAM proteins from a cold adaptive archaeon Methanolobus psychrophilus R15, this work demonstrated that TRAM is an archaeal Csp and exhibits RNA chaperone activity...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28877455/global-analysis-of-plasma-lipids-identifies-liver-derived-acylcarnitines-as-a-fuel-source-for-brown-fat-thermogenesis
#16
Judith Simcox, Gisela Geoghegan, John Alan Maschek, Claire L Bensard, Marzia Pasquali, Ren Miao, Sanghoon Lee, Lei Jiang, Ian Huck, Erin E Kershaw, Anthony J Donato, Udayan Apte, Nicola Longo, Jared Rutter, Renate Schreiber, Rudolf Zechner, James Cox, Claudio J Villanueva
Cold-induced thermogenesis is an energy-demanding process that protects endotherms against a reduction in ambient temperature. Using non-targeted liquid chromatography-mass spectrometry-based lipidomics, we identified elevated levels of plasma acylcarnitines in response to the cold. We found that the liver undergoes a metabolic switch to provide fuel for brown fat thermogenesis by producing acylcarnitines. Cold stimulates white adipocytes to release free fatty acids that activate the nuclear receptor HNF4α, which is required for acylcarnitine production in the liver and adaptive thermogenesis...
September 5, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28877451/the-liver-as-a-hub-in-thermogenesis
#17
Nada A Abumrad
Manipulating thermogenesis could increase energy expenditure and improve metabolism. Brown fat is a major site of nonshivering thermogenesis, but other tissues, notably muscle and liver, can contribute to cold adaptation. In this issue, Simcox et al. (2017) demonstrate in cold-exposed mice that liver-generated acylcarnitines are required to fuel thermogenesis.
September 5, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28869113/cold-induced-retrotransposition-of-fish-lines
#18
Shue Chen, Mengchao Yu, Xu Chu, Wenhao Li, Xiujuan Yin, Liangbiao Chen
Classes of retrotransposons constitute a large portion of metazoan genome. There have been cases reported that genomic abundance of retrotransposons is correlated with the severity of low environmental temperatures. However, the molecular mechanisms underlying such correlation are unknown. We show here by cell transfection assays that retrotransposition (RTP) of a long interspersed nuclear element (LINE) from an Antarctic notothenioid fish Dissostichus mawsoni (dmL1) could be activated by low temperature exposure, causing increased dmL1 copies in the host cell genome...
July 24, 2017: Journal of Genetics and Genomics, Yi Chuan Xue Bao
https://www.readbyqxmd.com/read/28866080/the-tartary-buckwheat-genome-provides-insights%C3%A2-into-rutin-biosynthesis-and-abiotic-stress%C3%A2-tolerance
#19
Lijun Zhang, Xiuxiu Li, Bin Ma, Qiang Gao, Huilong Du, Yuanhuai Han, Yan Li, Yinghao Cao, Ming Qi, Yaxin Zhu, Hongwei Lu, Mingchuan Ma, Longlong Liu, Jianping Zhou, Chenghu Nan, Yongjun Qin, Jun Wang, Lin Cui, Huimin Liu, Chengzhi Liang, Zhijun Qiao
Tartary buckwheat (Fagopyrum tataricum) is an important pseudocereal crop that is strongly adapted to growth in adverse environments. Its gluten-free grain contains complete proteins with a well-balanced composition of essential amino acids and is a rich source of beneficial phytochemicals that provide significant health benefits. Here, we report a high-quality, chromosome-scale Tartary buckwheat genome sequence of 489.3 Mb that is assembled by combining whole-genome shotgun sequencing of both Illumina short reads and single-molecule real-time long reads, sequence tags of a large DNA insert fosmid library, Hi-C sequencing data, and BioNano genome maps...
September 12, 2017: Molecular Plant
https://www.readbyqxmd.com/read/28862811/role-of-population-genetics-in-guiding-ecological-responses-to-climate
#20
Gerald E Rehfeldt, Laura P Leites, Dennis G Joyce, Aaron R Weiskittel
Population responses to climate were assessed using 3-7 yr height growth data gathered for 266 populations growing in 12 common gardens established in the 1980s as part of 5 disparate studies of Pinus contorta var. latifolia. Responses are interpreted according to three concepts: the ecological optimum, the climate where a population is competitively exclusive and in which, therefore, it occurs naturally; the physiological optimum, the climate where a population grows best but is most often competitively excluded; and growth potential, the innate capacity for growth at the physiological optimum...
September 1, 2017: Global Change Biology
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