keyword
MENU ▼
Read by QxMD icon Read
search

Nutrients

keyword
https://www.readbyqxmd.com/read/28324683/thermal-stress-impacts-reproductive-development-and-grain-yield-in-rice
#1
REVIEW
Muhammad Shakeel Arshad, Muhammad Farooq, Folkard Asch, Jagadish S V Krishna, P V Vara Prasad, Kadambot H M Siddique
Rice is highly sensitive to temperature stress (cold and heat), particularly during the reproductive and grain-filling stages. In this review, we discuss the effects of low- and high-temperature sensitivity in rice at various reproductive stages (from meiosis to grain development) and propose strategies for improving the tolerance of rice to terminal thermal stress. Cold stress impacts reproductive development through (i) delayed heading, due to its effect on anther respiration, which increases sucrose accumulation, protein denaturation and asparagine levels, and decreases proline accumulation, (ii) pollen sterility owing to tapetal hypertrophy and related nutrient imbalances, (iii) reduced activity of cell wall bound invertase in the tapetum of rice anthers, (iv) impaired fertilization due to inhibited anther dehiscence, stigma receptivity and ability of the pollen tube to germinate through the style towards the ovary, and (v) floret sterility, which increases grain abortion, restricts grain size, and thus reduces grain yield...
March 16, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28324279/soil-organic-matter-as-sole-indicator-of-soil-degradation
#2
S E Obalum, G U Chibuike, S Peth, Y Ouyang
Soil organic matter (SOM) is known to play vital roles in the maintenance and improvement of many soil properties and processes. These roles, which largely influence soil functions, are a pool of specific contributions of different components of SOM. The soil functions, in turn, normally define the level of soil degradation, viewed as quantifiable temporal changes in a soil that impairs its quality. This paper aims at providing a generalized assessment of the current state of knowledge on the usefulness of SOM in monitoring soil degradation, based on its influence on the physical, chemical and biological properties and processes of soils...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28324277/using-multivariate-techniques-to-assess-the-effects-of-urbanization-on-surface-water-quality-a-case-study-in-the-liangjiang-new-area-china
#3
Kun Luo, Xuebin Hu, Qiang He, Zhengsong Wu, Hao Cheng, Zhenlong Hu, Asit Mazumder
Rapid urbanization in China has been causing dramatic deterioration in the water quality of rivers and threatening aquatic ecosystem health. In this paper, multivariate techniques, such as factor analysis (FA) and cluster analysis (CA), were applied to analyze the water quality datasets for 19 rivers in Liangjiang New Area (LJNA), China, collected in April (dry season) and September (wet season) of 2014 and 2015. In most sampling rivers, total phosphorus, total nitrogen, and fecal coliform exceeded the Class V guideline (GB3838-2002), which could thereby threaten the water quality in Yangtze and Jialing Rivers...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28324138/remediation-of-petroleum-contaminated-soil-using-bulrush-straw-powder-biochar-and-nutrients
#4
Yanjie Wang, Fayun Li, Xiangmin Rong, Haixing Song, Jiabo Chen
The aim of this study was to determine the remediation efficiency of petroleum-contaminated soil from an oilfield using different types of remediation treatments under laboratory conditions. Compared with unamended soil as the control treatment (T1), soil samples were amended with bulrush straw powder (T2), with biochar alone (T3) and in combination with nutrients (nitrogen and phosphorus) (T4). The remediation experiment was carried out for 8 weeks. The extent of hydrocarbon degradation was monitored gravimetrically, and the residual oil fractions were analyzed by gas chromatography...
March 21, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28323941/the-diverse-metabolic-roles-of-peripheral-serotonin
#5
Alyce M Martin, Richard L Young, Lex Leong, Geraint B Rogers, Nick J Spencer, Claire F Jessup, Damien J Keating
Serotonin (5-hydroxytryptamine, 5-HT) is a multi-functional bioamine with important signaling roles in a range of physiological pathways. Almost all the 5-HT in our body is synthesized in specialized enteroendocrine cells within the gastrointestinal (GI) mucosa called enterochromaffin (EC) cells. These cells provide all our circulating 5-HT. While we have long appreciated the important roles of 5-HT within the gut including the modulation of GI motility, there is recently emerging evidence of the physiological and clinical significance of gut-derived 5-HT outside of the gut...
March 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323618/contact-dependent-killing-by-caulobacter-crescentus-via-cell-surface-associated-glycine-zipper-proteins
#6
Leonor Garcia-Bayona, Monica S Guo, Michael T Laub
Most bacteria are in fierce competition with other species for limited nutrients. Some bacteria can kill nearby cells by secreting bacteriocins, a diverse group of proteinaceous antimicrobials. However, bacteriocins are typically freely diffusible, and so of little value to planktonic cells in aqueous environments. Here, we identify an atypical two-protein bacteriocin in the α-proteobacterium Caulobacter crescentus that is retained on the surface of producer cells where it mediates cell contact-dependent killing...
March 21, 2017: ELife
https://www.readbyqxmd.com/read/28319994/growth-of-bacterial-phytopathogens-in-animal-manures
#7
Wojciech Sledz, Sabina Zoledowska, Agata Motyka, Leszek Kadziński, Bogdan Banecki
Animal manures are routinely applied to agricultural lands to improve crop yield, but the possibility to spread bacterial phytopathogens through field fertilization has not been considered yet. We monitored 49 cattle, horse, swine, sheep or chicken manure samples collected in 14 Polish voivodeships for the most important plant pathogenic bacteria - Ralstonia solanacearum (Rsol), Xanthomonas campestris pv. campestris (Xcc), Pectobacterium carotovorum subsp. carotovorum (Pcc), Pectobacterium atrosepticum (Pba), Erwinia amylovora (Eam), Clavibacter michiganensis subsp...
2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28319940/iron-status-of-vegetarian-children-a-review-of-literature
#8
Roman Pawlak, Kami Bell
BACKGROUND: Iron is considered a nutrient of concern for vegetarians. In children, inadequate iron status may lead to anemia and poor growth. SUMMARY: Thirteen original manuscripts met the inclusion criteria. Various biochemical markers of iron status, such as hemoglobin (Hb) and serum ferritin, were used. Seven of the 13 studies reported the prevalence of iron deficiency separately for vegetarians and non-vegetarians. Five out of 7 showed a higher prevalence of iron deficiency among the vegetarian participants, while the other 2 showed a higher prevalence of iron deficiency among non-vegetarians...
March 21, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28319861/different-salt-concentrations-induce-alterations-both-in-photosynthetic-parameters-and-salt-gland-activity-in-leaves-of-the-mangrove-avicennia-schaueriana
#9
Janaina Dos Santos Garcia, Ândrea Carla Dalmolin, Marcel Giovanni Costa França, Pedro Antônio Oliveira Mangabeira
Mangrove sites are constantly under tidal regimes, where there is variation of dissolved oxygen and saline content in water. This study evaluated the effects of varying salinity in Avicennia schaueriana, an abundant species in the sea-mangrove-river interface. Seedlings of A. schaueriana were harvested at the riverbank and placed in different saline and nutrient solutions in a greenhouse in order to simulate a saline flow. After 7 acclimatization days, plants were exposed to the following saline concentrations: 0, 50, 170 and 250mM NaCl, for a period of 30 days...
March 16, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28319759/removal-of-hydrogen-sulfide-generated-during-anaerobic-treatment-of-sulfate-laden-wastewater-using-biochar-evaluation-of-efficiency-and-mechanisms
#10
Jarupat Kanjanarong, Balendu S Giri, Deb P Jaisi, Fernanda R Oliveira, Piyarat Boonsawang, Sumate Chaiprapat, R S Singh, Avula Balakrishna, Samir Kumar Khanal
Removal of hydrogen sulfide (H2S) from biogas was investigated in a biochar column integrated with a bench-scale continuous-stirred tank reactor (CSTR) treating sulfate-laden wastewater. Synthetic wastewater containing sulfate concentrations of 200-2000mg SO4(2-)/L was used as substrate, and the CSTR was operated at an organic loading rate of 1.5g chemical oxygen demand (COD)/L·day and a hydraulic retention time (HRT) of 20days. The biochar was able to remove about 98.0 (±1.2)% of H2S for the ranges of concentrations from 105-1020ppmv, especially at high moisture content (80-85%)...
March 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28319719/year-round-phytofiltration-lagoon-assessment-using-pistia-stratiotes-within-a-pilot-plant-scale-biorefinery
#11
Eugenia J Olguín, Daniel A García-López, Ricardo E González-Portela, Gloria Sánchez-Galván
Phytofiltration lagoons are phytoremediation technologies suitable for tropical and sub-tropical regions requiring cost-effective and echo-friendly technologies. A biorefinery of fourth generation has been implemented at pilot plant level in Xalapa, Mexico, and the phytofiltration lagoon, being the first module for provision of treated water and plant biomass for biofuel production plays a key role. The aim of this work was to evaluate the performance of such phytofiltration lagoon with a working volume of 13,000 L for the removal of nutrients from an urban river polluted with domestic wastewater and the biomass productivity of the macrophyte Pistia stratiotes, during five different experimental periods, comprising 42 days each one...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319716/multiple-stressors-in-sediments-impact-adjacent-hard-substrate-habitats-and-across-biological-domains
#12
Jasmin C Lawes, Katherine A Dafforn, Graeme F Clark, Mark V Brown, Emma L Johnston
Coastal systems are increasingly impacted by human activities. While the direct effects of individual contaminants have been investigated, the potential for multiple contaminants to impact adjacent hard substrate habitats is poorly understood. Sediment-bound contaminants pose a risk to water column organisms through resuspension and the fluxing of dissolved nutrients and metals. This study experimentally manipulated contaminated coastal sediments in mesocosms with additions of a common fertiliser to investigate the impact on both bacterial biofilms and macrofouling communities on nearby hard substrates...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319709/towards-an-integrated-understanding-of-how-micro-scale-processes-shape-groundwater-ecosystem-functions
#13
Susanne I Schmidt, Mark O Cuthbert, Marc Schwientek
Micro scale processes are expected to have a fundamental role in shaping groundwater ecosystems and yet they remain poorly understood and under-researched. In part, this is due to the fact that sampling is rarely carried out at the scale at which microorganisms, and their grazers and predators, function and thus we lack essential information. While set within a larger scale framework in terms of geochemical features, supply with energy and nutrients, and exchange intensity and dynamics, the micro scale adds variability, by providing heterogeneous zones at the micro scale which enable a wider range of redox reactions...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319708/effect-of-application-of-dairy-manure-effluent-and-inorganic-fertilizer-on-nitrogen-leaching-in-clayey-fluvo-aquic-soil-a-lysimeter-study
#14
Jianling Fan, Jiao Xiao, Deyan Liu, Guiping Ye, Jiafa Luo, David Houlbrooke, Seth Laurenson, Jing Yan, Lvjun Chen, Jinping Tian, Weixin Ding
Dairy farm manure and effluent are applied to cropland in China to provide a source of plant nutrients, but there are concerns over its effect on nitrogen (N) leaching loss and groundwater quality. To investigate the effects of land application of dairy manure and effluent on potential N leaching loss, two lysimeter trials were set up in clayey fluvo-aquic soil in a winter wheat-summer maize rotation cropping system on the North China Plain. The solid dairy manure trial included control without N fertilization (CK), inorganic N fertilizer (SNPK), and fresh (RAW) and composted (COM) dairy manure...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319703/impacts-of-human-activities-on-nutrient-transport-in-the-yellow-river-the-role-of-the-water-sediment-regulation-scheme
#15
Xinyu Li, Hontao Chen, Xueyan Jiang, Zhigang Yu, Qingzhen Yao
Anthropogenic activities alter the natural states of large rivers and their surrounding environment. The Yellow River is a well-studied case of a large river with heavy human control. An artificial managed water and sediment release system, known as the Water-Sediment Regulation Scheme (WSRS), has been carried out annually in the Yellow River since 2002. Nutrient concentrations and composition display significant time and space variations during the WSRS period. To figure out the anthropogenic impact of nutrient changes and transport in the Yellow River, biogeochemical observations were carried out in both middle reaches and lower reaches of the Yellow River during 2014 WSRS period...
March 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319655/meeting-nutritional-needs-in-the-first-1000-days-a-place-for-small-quantity-lipid-based-nutrient-supplements
#16
Seth Adu-Afarwuah, Anna Lartey, Kathryn G Dewey
The first 1000 days of life is marked by intense metabolic activity and tissue deposition. The increased nutritional needs during this period, and the challenges to meeting them, are often not understood or appreciated. Here, we describe the nutritional needs during the first 1000 days, highlight the challenges to meeting these needs in developing countries, outline intervention strategies, and examine the consumption of small-quantity lipid-based nutrient supplements (SQ-LNS) as a promising strategy. In low-income settings, the challenge to meeting nutritional needs during the first 1000 days is worsened by overreliance on cereal-based diets of low nutrient density and high prevalence of infections and infestations...
March 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28319155/relationships-between-abiotic-environment-plant-functional-traits-and-animal-body-size-at-mount-kilimanjaro-tanzania
#17
David Schellenberger Costa, Alice Classen, Stefan Ferger, Maria Helbig-Bonitz, Marcell Peters, Katrin Böhning-Gaese, Ingolf Steffan-Dewenter, Michael Kleyer
The effect-response framework states that plant functional traits link the abiotic environment to ecosystem functioning. One ecosystem property is the body size of the animals living in the system, which is assumed to depend on temperature or resource availability, among others. For primary consumers, resource availability may directly be related to plant traits, while for secondary consumers the relationship is indirect. We used plant traits to describe resource availability along an elevational gradient on Mount Kilimanjaro, Tanzania...
2017: PloS One
https://www.readbyqxmd.com/read/28319110/systemic-nutrient-signalling-on-the-road-for-nitrate
#18
Sandrine Ruffel, Alain Gojon
No abstract text is available yet for this article.
March 20, 2017: Nature Plants
https://www.readbyqxmd.com/read/28319105/link-of-dietary-patterns-with-metabolic-syndrome-analysis-of-the-national-health-and-nutrition-examination-survey
#19
M Mazidi, S Pennathur, F Afshinnia
BACKGROUND: Population-based interventions aimed at halting the increasing prevalence of metabolic syndrome (MetS) require thorough understanding of dietary interplays. Objective is to identify the independent dietary nutrients associated with MetS and its components using dietary pattern identification and the single-nutrient approaches in The United States. METHODS: This is a cross-sectional observation. Participants are selected from the National Health and Nutrition Examination Survey (NHANES) with available dietary intake, biochemical and anthropometrical data from 2001 to 2012...
March 20, 2017: Nutrition & Diabetes
https://www.readbyqxmd.com/read/28319083/structures-of-human-o-glcnacase-and-its-complexes-reveal-a-new-substrate-recognition-mode
#20
Baobin Li, Hao Li, Lei Lu, Jiaoyang Jiang
Human O-GlcNAcase (hOGA) is the unique enzyme responsible for the hydrolysis of the O-linked β-N-acetyl glucosamine (O-GlcNAc) modification, an essential protein glycosylation event that modulates the function of numerous cellular proteins in response to nutrients and stress. Here we report crystal structures of a truncated hOGA, which comprises the catalytic and stalk domains, in apo form, in complex with an inhibitor, and in complex with a glycopeptide substrate. We found that hOGA forms an unusual arm-in-arm homodimer in which the catalytic domain of one monomer is covered by the stalk domain of the sister monomer to create a substrate-binding cleft...
March 20, 2017: Nature Structural & Molecular Biology
keyword
keyword
79879
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"