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Zea mays; chlorophyll; corn; environment; fluorescence; gas exchange; photochemistry; photosystem II; pot culture; sand; soil; stomatal conductance; toxicity; vesicular arbuscular mycorrhizae; water content; water stress; water use efficiency
Abstract:
... The influences of arbuscular mycorrhizal (AM) fungus on growth, gas exchange, chlorophyll concentration, chlorophyll fluorescence and water status of maize (Zea mays L.) plants were studied in pot culture under well-watered and drought stress conditions. The maize plants were grown in a sand and black soil mixture for 4 weeks, and then exposed to drought stress for 4 weeks. Drought stress signific ...
Zea mays; corn; environment; evapotranspiration; grain yield; rainfed farming; soil water content; straw; summer; water use efficiency; China
Abstract:
... To develop rainfed agriculture in northern China, we conducted field experiments with three straw mulching rates (0, 6, and 12 t/ha) on two plant types (a compact type, Chaoshi1, and a flat type, Danyu86) during the summer maize-growing season in 2009 and 2010 to study soil moisture content, evapotranspiration, grain yield, and water-use efficiency (WUE). The results indicated that straw mulching ...
... In the present study the impact of beauvericin (BEA) on the cell membrane properties and respiration of young initial leaves of maize were studied using two maize cultivars differing in their susceptibility to Fusarium sp. BEA significantly depolarized EM of leaf parenchymal cells and this depolarization showed time and dose dependency regardless on the sensitivity of maize cultivars to ...
Chernozems; Zea mays; corn; environment; field experimentation; nitrogen; nitrogen fertilizers; nutrient use efficiency; sewage; sewage sludge; silage
Abstract:
... A field experiment was conducted on a chernozem soil to estimate fertiliser N efficiency of silage maize (Zea mays L.) by the difference method as influenced by the type of N fertiliser (mineral-MF vs. sewage sludge-SS), and N rate. Eight N treatments were included (0, 60, 120, 180, and 240 kg N/ha prior to maize sowing, 60 kg N/ha at planting in MF; 120, and 240 kg N/ha in SS. The average dry mat ...
... A field experiment was conducted in order to estimate the influence of different arrangement patterns of maize plants (Zea mays L.) in combination with low rates of herbicides on weed infestation and on production parameters of the crop. The maize was sown at 70-, 50-, and 35-cm row space with the same crop density. The weed biomass declined with smaller row spaces and was, on average, the lowest ...
... A two-factorial experiment was carried out on 6 groups (10 animals each) of Polish Black and White Holstein-Friesian cows in the transition period to determine the effect of glucogenic additive (GA) to the diets containing grains of varied ruminal starch degradation on cow performance. The animals from 3 control groups (C-groups) were fed the diets without any additive, whereas 3 other, expe ...
... The application of Thamnidium elegans fungal strain CCF 1456 (TE) for effective utilization of various agroindustrial materials creates new perspectives for animal cereal diets enriched with microbial γ-linolenic acid (GLA). Diets consisting of lucerne hay (LH) plus prefermented cereals (wheat bran/spent malt grains, WB+TE or WB+TE enriched with sunflower oil, WB+SO+TE in the first experimen ...
... The baking quality in the sets of both commercial and variety wheat samples (80 and 18 items) and wheat composite flour (standard and 25 blends) was evaluated in terms of the Solvent retention capacity method (AACC 56-11). Composites were prepared from a commercial fine wheat flour and commercial bio-wholemeal flour prepared by milling of common wheat, rye, oat, barleys and corn at substitution le ...
Zea mays; amines; biosynthesis; carotenoids; corn; field experimentation; growth and development; high performance liquid chromatography; phenolic acids; phosphates; phosphorus; polyphenols; seeds; soil; sowing date; vitamin E; whole grain foods
Abstract:
... Corn (Zea mays L.) growth and development is often limited by the availability of phosphate. We thus hypothesized that phosphate fertilization may increase the contents of (poly)phenols, carotenoids, and tocochromanols (vitamin E) in corn grains. Corn plants cultivated on a soil fertilized with 44 kg phosphorus/ha were compared to plants grown on soil with low plant-available phosphate (1.6 mg CAL ...
... In response to insect feeding, corn plants (Zea mays cv. Delprim) release elevated levels of volatile organic compounds (VOCs), including the C6-volatile (Z)-3-hexenol. The level of mRNA accumulation for a series of defense genes was monitored in response to application of (Z)-3-hexenol (50 nmol) to undamaged plants. The induction of transcripts for hpl (hydroperoxide lyase), fps (farnesyl pyropho ...
carbon; corn; land use; microscopy; organic matter; pH; sewage sludge; silt; soil micromorphology; soil sampling; soil structure; tillage; topsoil; France
Abstract:
... Soil structure is a key characteristic of soil functioning. More, silt and clay-sized organo-mineral fractions are usually considered as the most reactive soil fractions. As transmission electronic microscopy (TEM) appeared to be well-suited to study soil microstructures, it was used to test the sensitivity of micro-aggregates to land use and cultivation practices. The aims of this study were ther ...
... Previous research in our laboratory demonstrated marked increases in phytate P utilization when P-deficient corn-soybean meal diets were supplemented with 1a-hydroxycholecalciferol [1alpha-(OH) D3] and fed to chicks. Our objective was to determine if 1alpha-(OH) D3 would improve phytate P utilization when supplemented to vitamin D-adequate laying hen diets. The five experimental treatments were 1) ...
... Soil salinity is a wide-reaching environmental problem that lowers the yield of commercial crops such as maize, rice, and sugarcane. In this study, we examined the effect of 1-aminocyclopropane-1-carboxylate (ACC) deaminase-producing endophytic diazotrophic Enterobacter sp. EN-21 on growth promotion, salt tolerance, and root colonization of sugarcane. Enterobacter sp. EN-21 inoculated and uninocul ...
... Dry matter intake (DMI) by horses and cattle is known to be affected by seasonal weather changes. Also, voluntary DMI differs among herbivore species. The study objective was to compare changes in voluntary DMI of cattle and horses fed a similar forage diet to changes in temperature (TEMP) and precipitation (PRECP) during summer-fall season in Central Kentucky, USA. Twelve Holstein steers particip ...
Suresh Varsani; Sajjan Grover; Shaoqun Zhou; Kyle G. Koch; Pei-Cheng Huang; Michael V. Kolomiets; W. P. Williams; Tiffany Heng-Moss; Gautam Sarath; Dawn S. Luthe; Georg Jander; Joe Louis
... The corn leaf aphid (CLA; Rhopalosiphum maidis) is a phloem sap-sucking insect that attacks many cereal crops, including maize (Zea mays). We previously showed that the maize inbred line Mp708, which was developed by classical plant breeding, provides enhanced resistance to CLA. Here, using electrophysiological monitoring of aphid feeding behavior, we demonstrate that Mp708 provides phloem-mediate ...
... Long-term management systems cause changes to soil physical properties that may affect soil erosion and erodibility. A study was conducted to evaluate the effects of 125 years of continuous crop management on Sanborn Field for selected soil physical properties. Intact soil cores were collected from continuous corn (Zea mays L.), continuous wheat (Triticum aestivum L.), continuous timothy (Phleum p ...
... Before the Spaniards conquered America in 1492, several ancient cultures and empires – the Aztec, Maya, Inca, and Mapuche, among them – already inhabited the two continents and had made important advances in the arts and sciences as well as in architecture, astronomy, agriculture and the domestication of crops. These peoples lived according to their own rules and in harmony with their magnificent ...
... Stable isotope analysis is a fundamental tool in food origin and authenticity testing. Its use in livestock production requires knowledge of isotope discrimination between product and diet. Here, we report ¹³C discrimination (¹³Δ) for milk, milk components (fat, casein and lactose) and faeces in eight lactating dairy cows, which grazed pasture or were fed fresh pasture herbage in the stall. Cows w ...
... It is difficult to quantify the mechanism(s) responsible for competition-induced yield loss using traditional experimental techniques. A technique using yield and ¹³C discrimination (ΔΔ) for wheat, a C₃ plant, has been developed to separate total yield loss (TYL) into yield loss due to N (YLNS) and water (YLWS) stresses. The objective of this research was to determine whether the ΔΔ approach could ...
... This article reports the design of 13C-dating, the first method to calculate the relative age of molecular substance homologues occurring in fractions from the same soil sample. Soil is a major carbon pool impacting modern climate by CO2 release and uptake. Molecular substances that sequester carbon in soils are poorly known due to the absence of methods to study molecular-level C dynamics over ag ...
... Understanding the insulinemic and glycemic responses to common equine feeds and the efficacy of purported insulin modulators, such as aloe vera and grape seed extract, is valuable in designing appropriate equine diets. Using a repeated 5 × 5 Latin square design, dehydrated alfalfa (DA), beet pulp (BP), oats (O), steam-flaked corn (C), and steam-flaked corn with an insulin modulator consisting of c ...
... Tillage and residue retention affect nitrogen (N) dynamics and nutrient losses and therefore nitrogen use efficiency (NUE) and crop fertilizer use, however, there is little information about residual fertilizer effects on the subsequent crop. Micro‐plots with ¹⁵N‐labelled urea were established in 2014/2015 on a long‐term experiment on a Vertisol in north‐west Mexico. N fertilizer recovery (NFR) an ...
Zea mays; agronomy; corn; fertilizer rates; nitrogen; nitrogen fertilizers; nutrient use efficiency; soil; soil fertility; total organic carbon; China
Abstract:
... Applications of high amounts of nitrogen (N) fertilizer are essential for obtaining sustainable maize (Zea mays L.) yields but also result in low N‐use efficiency (NUE) and cause a series of environmental problems. To optimize fertilizer management, it is necessary to determine the effects of soil fertility improvement on NUE and the fate of N fertilizer. In this study, we conducted a ¹⁵N tracer p ...
Pedro Lopes Garcia; Renata Alcarde Sermarini; Carlos Roberto de Sant Ana Filho; José Albertino Bendassolli; Beatriz Nastaro Boschiero; Paulo Cesar Ocheuze Trivelin
... A single application of polymer-sulfur coated urea (PSCU) and conventional urea (U) is expected to ensure nitrogen (N) throughout the maize (Zea mays L.) growth cycle being U the likely main N-fertilizer supplier at the beginning and PSCU during the maize growth cycle. This research aimed to evaluate N fertilization management (split, incorporated, and broadcast application) and fertilizer blends ...
... There is only one way of measuring directly the uptake of nutrient from applied fertilizer as affected by timing, placement, fertilizer source, and environmental interactions. This is by isotope labelling of the fertilizer. The purpose of the present study is not only to demonstrate the effectiveness of this technique in field experiments, but to extend the technique to the direct measurement of t ...
... Converting oil palm empty fruit bunches into biochar is an alternative waste management method and has strong potential to improve N fertiliser use efficiency in agriculture. The aim of this study was to determine the effectiveness of oil palm empty fruit bunch biochar (EFBB) in improving recovery of ¹⁵N-labelled nitrogen fertiliser by maize (Zea mays L.) and leaching of mineral N and K. An experi ...
... Conservation agriculture is a sustainable alternative to conventional agriculture. However, little is known about their effect on the environment and on the soil microbial community. It was established as a hypothesis that the bacterial community structure would be defined by the different agronomic practices. The objective of this study was, therefore, to investigate how crop residue management, ...
... Docosahexaenoic acid (DHA) is considered to be important for cardiac and brain function, and 17β-estradiol (E2) appears to increase the conversion of α-linolenic acid (ALA) into DHA. However, the effect of varying ALA intake on the positive effect of E2 on DHA synthesis is not known. Therefore, the objective of this study was to investigate the effects of E2 supplementation on tissue and serum fat ...
... Grass hedges planted along the contour of slope cropland can greatly reduce water and soil loss, but the effect of long-term grass hedge cultivation on soil productivity is unclear. The objective of this study was to evaluate the temporal and spatial characteristics of soil thickness, soil fertility and grain yield on the slope croplands with long-term grass hedge cultivation. Four grass hedges, v ...
... The application of ³³P or ³²P isotopes to directly trace phosphorus (P) uptake during arbuscular mycorrhizal (AM) symbiosis is limited by the radioactivity of the two P isotopes, especially under field conditions. A potential alternative method for tracing P uptake in plant-soil systems relies on the analysis of the stable oxygen (O) isotopes of ortho-phosphate (Pi); however, little is known about ...
... Protists play important roles in shaping the microbial community of the rhizosphere and defining these roles will require the study of protist isolates. However, there is still a limited understanding of how well protist isolation efforts can capture the diversity and composition of rhizosphere protistan communities. Here, we report a simultaneous isolation and 18S rRNA gene amplicon sequencing su ...
... Twelve feedstuffs (cereals, fibrous byproducts, protein-rich byproducts and forages) were determined for methane (CH₄) production by the in vitro gas production technique (IVGPT) and were correlated with their chemical compositions to predict enteric CH₄ originating from these feedstuffs in ruminants. Corn, soybean hull, soybean meal and corn silage generated the highest CH₄ production from their ...
... In 1998-1999 a detection survey on the presence of the western corn rootworm (WCR) Diabrotica virgifera virgifera Le Conte was conducted in Austria, Germany, France, Slovakia and Slovenia. In these countries, the primary monitoring tool was the Hungarian pheromone trap. According to the results, no WCR adults were detected in these countries. It is assumed that Austria, Germany, France, Slovakia ...
... Napin BnIb is a representative member of the 2S albumin seed proteins, which consists of two polypeptide chains of 3.8 and 8.4 kDa linked by two disulfide bridges. In this work, a complete assignment of the 1H spectra of napin BnIb has been carried out by two-dimensional NMR sequence-specific methods and its secondary structure determined on the basis of spectral data. A calculation of the tertiar ...
... 2,5-Dimethyl-4-hydroxy-3(2H)-furanone (DHF) was identified (GC-MS) in canned, frozen (cooked), and fresh (cooked) sweet corn. It was also identified in corn tortilla chips and taco shells. The concentration of DHF was higher in canned (170-270 micrograms/kg) than in fresh (19 micrograms/kg) or frozen (27 micrograms/kg) sweet corn. Moderate concentrations of DHF occurred in tortilla chips (260 micr ...
corn; energy efficiency; ethanol; greenhouse gas emissions; industry; surveys
Abstract:
... Emerging regulations require an examination of corn ethanol's greenhouse gas emissions on a life cycle basis, including emissions from energy consumed at the plant level. However, comprehensive survey data of the industry's average performance dates back to 2001, prior to the industry's expansion phase. Responding to the need for updated data, we conducted a survey to collect energy and processing ...
... In order to examine the possible involvement of the 20S proteasome in degradation of oxidized proteins, the effects of different cadmium concentrations on its activities, protein abundance and oxidation level were studied using maize (Zea mays L.) leaf segments. The accumulation of carbonylated and ubiquitinated proteins was also investigated. Treatment with 50 μM CdCl2 increased both trypsin- and ...
... Both mesocotyl and coleoptile synergistic elongation of maize are the major causes of its deep-seeding tolerance. To elucidate the physiological mechanism of their elongation induced by brassinosteroid under deep-seeding stress, seeds of deep-seeding tolerant N192, W64 and intolerant Ji853, K12 were treated with 4.16 × 10–³ M exogenous 24-epibrassinolide (EBR) under 3 or 20 cm seeding depths. The ...
... Coleoptile/mesocotyl elongation influence seedling emergence and establishment, is major causes of maize deep-seeding tolerance (DST). Detailed analyses on molecular basis underlying their elongation mediated by brassinosteroid under deep-seeding stress (DSS) could provide meaningful information for key factors controlling their elongation. Here we monitored transcriptome and phytohormones changes ...
acidification; bioethanol; biorefining; carbon cycle; coal; consequential life cycle assessment; corn; energy balance; energy efficiency; environmental impact; environmental performance; ethanol; ethanol production; eutrophication; global warming; greenhouse gas emissions; heat; life cycle thinking; models; nonrenewable resources; sugar industry; sugarcane bagasse; water pollution; South Africa
Abstract:
... Biofuels are heavily debated as to their potential to reduce transport-related greenhouse gas emissions. Life cycle thinking gave rise to formal evaluations of the energy balance of such fuels, which led to the vigorously conducted “corn to ethanol” debates. Just as consensus was building on such evaluations came the “carbon debt” insights, a result of applying consequential Life Cycle Assessment ...
... This study investigated the antifungal activity and the potential antifungal mechanisms of 2‐hydroxy‐4‐methoxybenzaldehyde (HMB) against Aspergillus flavus (A. flavus). The minimum inhibitory concentration (MIC) of HMB in preventing spore germination was 70 μg mL⁻¹. HMB at MIC disrupted cell wall integrity by reducing the number of septa by 86.66% (P < 0.05) in mycelia and increased cell membrane ...
Zea mays; algorithms; automation; cameras; color; computer software; corn; data collection; lidar; phenotype; seedlings; soil; standard deviation
Abstract:
... Point cloud rigid registration and stitching for plants with complex architecture is a challenging task, however, it is an important process to take advantage of the full potential of 3-D cameras for plant phenotyping and agricultural automation for characterizing production environments in agriculture. A methodology for three-dimensional (3-D) reconstruction of maize crop rows was proposed in thi ...
Daniel Maag; Claudio Dalvit; Damien Thevenet; Angela Köhler; Felipe C. Wouters; Daniel G. Vassão; Jonathan Gershenzon; Jean-Luc Wolfender; Ted C.J. Turlings; Matthias Erb; Gaetan Glauser
... In order to defend themselves against arthropod herbivores, maize plants produce 1,4-benzoxazin-3-ones (BXs), which are stored as weakly active glucosides in the vacuole. Upon tissue disruption, BXs come into contact with β-glucosidases, resulting in the release of active aglycones and their breakdown products. While some aglycones can be reglucosylated by specialist herbivores, little is known ab ...
... Free‐air CO₂ enrichment (FACE) allows open‐air elevation of [CO₂] without altering the microclimate. Its scale uniquely supports simultaneous study from physiology and yield to soil processes and disease. In 2005 we summarized results of then 28 published observations by meta‐analysis. Subsequent studies have combined FACE with temperature, drought, ozone, and nitrogen treatments. Here, we summari ...
... This study aimed to evaluate general motility and mitochondrial cytochemical activity of post-thawed semen of pasture-fed Nelore bulls supplemented with palm and soybean oils (protected by calcium salts). Twenty-four young male Nellore bulls were randomly assigned to 2 groups: control (CO; corn supplement and distillery grains without the addition of protected fat) and palm and soybean oils associ ...
... Chromosome conformation capture (3C) and 3C-based technology have revolutionized studies on chromosomal interactions and their role in gene regulation and chromosome organization. 3C allows the in vivo identification of physical interactions between chromosomal regions. Such interactions are shown to play a role in various aspects of gene regulation, for example transcriptional activation of genes ...
... Corn seed simulation modeling plays an important role in increasing the efficiency of corn production. Current research on corn seed modeling focuses on the development of 3D particle modeling methods. For efficient and precise modeling, on more corn seeds, in this article, a 3D scanner is introduced in the modeling method. Specifically, a combination of manual eight-sphere filling and automated s ...