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https://www.readbyqxmd.com/read/29454169/farmyard-manure-alone-and-combined-with-immobilizing-amendments-reduced-cadmium-accumulation-in-wheat-and-rice-grains-grown-in-field-irrigated-with-raw-effluents
#1
Muhammad Zia Ur Rehman, Muhammad Rizwan, Hinnan Khalid, Shafaqat Ali, Asif Naeem, Balal Yousaf, Guijian Liu, Muhammad Sabir, Muhammad Farooq
Cadmium (Cd) stress is a serious concern in agricultural soils worldwide whereas little is known about the impact of farmyard manure (FYM) alone or combined with limestone, lignite and biochar on Cd concentrations in plants. Wheat was grown in Cd-contaminated field amended with control (T 1 ), FYM @ 0.1% (T 2 ), FYM + limestone @ 0.05% each (T 3 ), FYM + lignite @ 0.05% each (T 4 ), FYM + biochar @ 0.05% each (T 5 ) and subsequent rice was grown without additional use of amendments. Soil application of amendments increased straw and grain yield and thousand grain weight being maximum in FYM + limestone treatment...
February 8, 2018: Chemosphere
https://www.readbyqxmd.com/read/29453723/macroelements-and-heavy-metals-content-in-energy-crops-cultivated-on-contaminated-soil-under-different-fertilization-case-studies-on-autumn-harvest
#2
Marta Pogrzeba, Szymon Rusinowski, Jacek Krzyżak
Heavy metals (HMs) contamination of soils is a major problem occurring worldwide. Utility of energy crops for biofuel feedstock production systems offers a feasible solution for a commercial exploitation of an arable land contaminated with HMs. Experiments involved field testing of Miscanthus x giganteus and Spartina pectinata cultivated on HMs-contaminated soil with standard NPK fertilizers and commercially available microbial inoculum. Biomass yield, water content, macronutrients (N, P, K, Mg, Ca), and heavy metal (Cd, Pb, Zn) concentrations in plant shoots were assessed at the end of the first and the second growing season...
February 16, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29453498/seed-priming-with-iron-and-zinc-in-bread-wheat-effects-in-germination-mitosis-and-grain-yield
#3
Sara Reis, Ivo Pavia, Ana Carvalho, José Moutinho-Pereira, Carlos Correia, José Lima-Brito
Currently, the biofortification of crops like wheat with micronutrients such as iron (Fe) and zinc (Zn) is extremely important due to the deficiencies of these micronutrients in the human diet and in soils. Agronomic biofortification with Fe and Zn can be done through different exogenous strategies such as soil application, foliar spraying, and seed priming. However, the excess of these micronutrients can be detrimental to the plants. Therefore, in the last decade, a high number of studies focused on the evaluation of their phytotoxic effects to define the best strategies for biofortification of bread wheat...
February 16, 2018: Protoplasma
https://www.readbyqxmd.com/read/29453440/allocation-of-photosynthesized-carbon-in-an-intensively-farmed-winter-wheat-soil-system-as-revealed-by-14-co-2-pulse-labelling
#4
Zhaoan Sun, Qing Chen, Xiao Han, Roland Bol, Bo Qu, Fanqiao Meng
Understanding the rhizodeposited carbon (C) dynamics of winter wheat (Triticum aestivum L.), is crucial for soil fertility and C sequestration. Pot-grown winter wheat was pulse labelled with 14 CO 2 at the key growth stages. 14 C in the shoots, roots and soil was measured at 5 or 2 days after 14 C-labelling (DAL 5/2) at each growth stage and at harvest. The 14 C in the shoots increased from 4% of the net 14 C recovered (shoots + roots + soil) during tillering to 53% at harvest. Approximately 14-34% of the net 14 C recovered was incorporated into the soil...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453390/birds-and-beans-comparing-avian-richness-and-endemism-in-arabica-and-robusta-agroforests-in-india-s-western-ghats
#5
Charlotte H Chang, Krithi K Karanth, Paul Robbins
Coffee is a major tropical commodity crop that can provide supplementary habitat for native wildlife. In Asia, coffee production is an increasingly important driver of landscape transformation and shifts between different coffee species is a major dimension of agroforestry trends. Yet few studies have compared the ecological impacts of conversion between different coffee species. We evaluated whether or not the two species of coffee grown globally-Coffea arabica and C. canephora (denoted "robusta")-had equivalent avian conservation value in the Western Ghats, India, where robusta production has become increasingly dominant...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453178/seasonal-dynamics-of-tetracycline-resistance-gene-transport-in-the-sumas-river-agricultural-watershed-of-british-columbia-canada
#6
Patricia L Keen, Charles W Knapp, Kenneth J Hall, David W Graham
Environmental transport of contaminants that can influence the development of antibiotic resistance in bacteria is an important concern in the management of ecological and human health risks. Agricultural regions are locales where practices linked to food crop and livestock production can introduce contaminants that could alter the selective pressures for the development of antibiotic resistance in microbiota. This is important in regions where the use of animal manure or municipal biosolids as waste and/or fertilizer could influence selection for antibiotic resistance in pathogenic bacterial species...
February 13, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29453091/identification-of-mirnas-and-their-targets-in-maize-in-response-to-sugarcane-mosaic-virus-infection
#7
Zihao Xia, Zhenxing Zhao, Mingjun Li, Ling Chen, Zhiyuan Jiao, Yuanhua Wu, Tao Zhou, Weichang Yu, Zaifeng Fan
MicroRNAs (miRNAs) are endogenous non-coding small RNAs that play essential regulatory roles in plant development and environmental stress responses. Maize (Zea mays L.) is a global economically important food and forage crop. To date, a number of maize miRNAs have been identified as being involved in plant development and stress responses. However, the miRNA-mediated gene regulatory networks responsive to virus infections in maize remain largely unknown. In this study, the profiles of small RNAs in buffer- and Sugarcane mosaic virus (SCMV)-inoculated maize plants were obtained by high-throughput sequencing, respectively...
January 31, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29452424/age-related-changes-in-survival-and-turnover-rates-of-balsam-fir-abies-balsamea-l-mill-fine-roots
#8
Marek J Krasowski, Michael B Lavigne, Michael A Szuter, Jakub Olesinski, John A Kershaw, Elizabeth McGarrigle
Fine-root (≤2 mm) demographics change as forests age, but the direction and extent of change are unknown. Knowledge of the change and understanding of causes will improve predictions of climate change impacts. We used minirhizotrons at three young and three mature balsam fir (Abies balsamea (L.) Mill.) sites to measure median lifespan (MLS) for each site and for annual cohorts. We computed turnover rate from the inverse of MLS (Tinv) and calculated a second turnover rate (T) from annual mortality, annual production and previous year-end standing crop...
February 14, 2018: Tree Physiology
https://www.readbyqxmd.com/read/29452393/no-copper-supplementation-in-a-corn-soybean-basal-diet-has-no-adverse-effects-on-late-phase-laying-hens-under-normal-and-cyclic-high-temperatures
#9
W X Li, Y Q Chen, L H Zhao, Q G Ma, J Y Zhang, C Ji
Over supplementation of copper (Cu) in animal diets may cause serious pollution in soil, water and harvested crops. To minimize the potential pollution, the effects of corn-soybean basal diet with or without supplementation of 8 mg Cu/kg on laying performance, plasma biochemical metabolic indices, and antioxidant status in laying hens were evaluated under normal and cyclic high temperatures. A total of 240 Hy-Line Brown laying hens were randomly allotted to 4 treatments with 6 replicates of 10 hens per replicate according to factorial design involved in 2 temperatures [normal temperature (NT) vs...
February 14, 2018: Poultry Science
https://www.readbyqxmd.com/read/29451888/ecogeography-of-teosinte
#10
José de Jesús Sánchez González, José Ariel Ruiz Corral, Guillermo Medina García, Gabriela Ramírez Ojeda, Lino De la Cruz Larios, James Brendan Holland, Roberto Miranda Medrano, Giovanni Emmanuel García Romero
Adaptation of crops to climate change has motivated an increasing interest in the potential value of novel traits from wild species; maize wild relatives, the teosintes, harbor traits that may be useful to maize breeding. To study the ecogeographic distribution of teosinte we constructed a robust database of 2363 teosinte occurrences from published sources for the period 1842-2016. A geographical information system integrating 216 environmental variables was created for Mexico and Central America and was used to characterize the environment of each teosinte occurrence site...
2018: PloS One
https://www.readbyqxmd.com/read/29451784/alteration-of-crop-yield-and-quality-of-wheat-upon-exposure-to-silver-nanoparticles-in-a-life-cycle-study
#11
Jie Yang, Fuping Jiang, Chuanxin Ma, Yu-Kui Rui, Mengmeng Rui, Adeel Muhammad, Weidong Cao, Baoshan Xing
Due to the rapid development of nanotechnology, metal-based nanoparticles (NPs) are inadvertently released into environment and may pose a potential threat to ecosystem. However, information for food quality and safety in NP treated crops is limited. In the present study, wheat (Triticum aestivum L.) was grown in different concentrations of Ag NP amended soil (20, 200, and 2000 mg•kg-1) for four months. At harvest, physiological parameters, Ag and micronutrients (Fe, Cu, and Zn) content, as well as amino acid and protein contents were measured...
February 16, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29451311/impaired-phloem-loading-in-zmsweet13a-b-c-sucrose-transporter-triple-knock-out-mutants-in-zea-mays
#12
Margaret Bezrutczyk, Thomas Hartwig, Marc Horshman, Si Nian Char, Jinliang Yang, Bing Yang, Wolf B Frommer, Davide Sosso
Crop yield depends on efficient allocation of sucrose from leaves to seeds. In Arabidopsis, phloem loading is mediated by a combination of SWEET sucrose effluxers and subsequent uptake by SUT1/SUC2 sucrose/H + symporters. ZmSUT1 is essential for carbon allocation in maize, but the relative contribution to apoplasmic phloem loading and retrieval of sucrose leaking from the translocation path is not known. Here we analysed the contribution of SWEETs to phloem loading in maize. We identified three leaf-expressed SWEET sucrose transporters as key components of apoplasmic phloem loading in Zea mays L...
February 16, 2018: New Phytologist
https://www.readbyqxmd.com/read/29451298/micro-computed-tomography-visualization-of-the-vestigial-alimentary-canal-in-adult-oestrid-flies
#13
D Martín-Vega, A Garbout, F Ahmed, L M Ferrer, J Lucientes, D D Colwell, M J R Hall
Oestrid flies (Diptera: Oestridae) do not feed during the adult stage as they acquire all necessary nutrients during the parasitic larval stage. The adult mouthparts and digestive tract are therefore frequently vestigial; however, morphological data on the alimentary canal in adult oestrid flies are scarce and a proper visualization of this organ system within the adult body is lacking. The present work visualizes the morphology of the alimentary canal in adults of two oestrid species, Oestrus ovis L. and Hypoderma lineatum (de Villiers), with the use of non-invasive micro-computed tomography (micro-CT) and compares it with the highly developed alimentary canal of the blow fly Calliphora vicina Robineau-Desvoidy (Diptera: Calliphoridae)...
February 16, 2018: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/29450860/morphological-characterization-of-helicoverpa-armigera-h%C3%A3-bner-lepidoptera-noctuidae-heliothinae
#14
L Queiroz-Santos, M M Casagrande, A Specht
The cotton bollworm Helicoverpa armigera (Hübner) is a widespread lepidopteran pest found in various crops worldwide. This highly polyphagous species, commonly found both in the Old and New World, has caused significant economic damage as an invasive agricultural pest in Brazil since 2013. The goal of the present study is to provide a detailed morphological assessment of adults and immature stages of H. armigera, as this species is often confused with H. zea (Boddie), a congeneric species that is native to the New World...
February 15, 2018: Neotropical Entomology
https://www.readbyqxmd.com/read/29450587/morphogenetic-alterations-in-melipona-quadrifasciata-anthidioides-hymenoptera-apidae-associated-with-pesticides
#15
Arlete Prado-Silva, Lorena Andrade Nunes, Jádilla Mendes Dos Santos, Paulo Roberto Antunes de Mello Affonso, Ana Maria Waldschmidt
Bees are major pollinators of both native flora and cultured crops. Nonetheless, despite their key functional role in ecosystems and agriculture, bee populations have been affected worldwide by deforestation and contamination by insecticides. Conversely, little is known about the effects of pesticides on morphogenetic development of neotropical stingless bees. We compared the fluctuating asymmetry (FA) in newly emerged bees and foragers of Melipona quadrifasciata anthidioides exposed to pesticides (experimental greenhouse and cultivated field)...
February 7, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29450572/plant-genetics-and-molecular-biology-an-introduction
#16
Rajeev K Varshney, Manish K Pandey, Annapurna Chitikineni
The rapidly evolving technologies can serve as a potential growth engine in agriculture as many of these technologies have revolutionized several industries in the recent past. The tremendous advancements in biotechnology methods, cost-effective sequencing technology, refinement of genomic tools, and standardization of modern genomics-assisted breeding methods hold great promise in taking the global agriculture to the next level through development of improved climate-smart seeds. These technologies can dramatically increase our capacity to understand the molecular basis of traits and utilize the available resources for accelerated development of stable high-yielding, nutritious, input-use efficient, and climate-smart crop varieties...
February 16, 2018: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/29449911/differences-for-traits-associated-with-early-n-acquisition-in-a-grain-legume-and-early-complementarity-in-grain-legume-triticale-mixtures
#17
Nicolas Carton, Christophe Naudin, Guillaume Piva, Rim Baccar, Guénaëlle Corre-Hellou
Early strategies of crop growth and N acquisition can be critical for determining competitive interactions between weeds and crops. Grain legumes and especially lupins are known to be poor competitors against weeds. Grain legumes are known to have low mineral soil N uptake abilities. However, inter- and intraspecific differences in N uptake ability in relation to below-ground traits have received little attention. Our objectives were (i) to measure differences among lupins for a set of traits associated with early growth and N acquisition; (ii) to examine how this variation compares to differences between lupin and a cereal, triticale, and (iii) to assess if mixing lupin with triticale provides a higher potential than does pure lupin regarding plant biomass and mineral soil N acquisition early in the crop cycle...
February 2018: AoB Plants
https://www.readbyqxmd.com/read/29449882/mathematical-models-of-lignin-biosynthesis
#18
Mojdeh Faraji, Luis L Fonseca, Luis Escamilla-Treviño, Jaime Barros-Rios, Nancy Engle, Zamin K Yang, Timothy J Tschaplinski, Richard A Dixon, Eberhard O Voit
Background: Lignin is a natural polymer that is interwoven with cellulose and hemicellulose within plant cell walls. Due to this molecular arrangement, lignin is a major contributor to the recalcitrance of plant materials with respect to the extraction of sugars and their fermentation into ethanol, butanol, and other potential bioenergy crops. The lignin biosynthetic pathway is similar, but not identical in different plant species. It is in each case comprised of a moderate number of enzymatic steps, but its responses to manipulations, such as gene knock-downs, are complicated by the fact that several of the key enzymes are involved in several reaction steps...
2018: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29449861/application-of-electrical-capacitance-method-for-prediction-of-plant-root-mass-and-activity-in-field-grown-crops
#19
Imre Cseresnyés, Katalin Szitár, Kálmán Rajkai, Anna Füzy, Péter Mikó, Ramóna Kovács, Tünde Takács
The root electrical capacitance (C R ) method is suitable for assessing root growth and activity, but soil water content (SWC) strongly influences the measurement results. This study aimed to adapt the method for field monitoring by evaluating the effect of SWC on root capacitance to ensure the comparability of C R detected at different SWC. First a pot experiment was conducted with maize and soybean to establish C R -SWC functions for the field soil. Ontogenetic changes in root activity were monitored under field conditions by simultaneously measuring C R and SWC around the roots...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29449855/microrna160-modulates-plant-development-and-heat-shock-protein-gene-expression-to-mediate-heat-tolerance-in-arabidopsis
#20
Jeng-Shane Lin, Chia-Chia Kuo, I-Chu Yang, Wei-An Tsai, Yu-Hsing Shen, Chih-Ching Lin, Yi-Chen Liang, Yu-Chi Li, Yun-Wei Kuo, Yu-Chi King, Hsi-Mei Lai, Shih-Tong Jeng
Global warming is causing a negative impact on plant growth and adversely impacts on crop yield. MicroRNAs (miRNAs) are critical in regulating the expression of genes involved in plant development as well as defense responses. The effects of miRNAs on heat-stressed Arabidopsis warrants further investigation. Heat stress increased the expression of miR160 and its precursors but considerably reduced that of its targets, ARF10, ARF16 , and ARF17 . To study the roles of miR160 during heat stress, transgenic Arabidopsis plants overexpressing miR160 precursor a (160OE) and artificial miR160 (MIM160), which mimics an inhibitor of miR160, were created...
2018: Frontiers in Plant Science
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