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https://www.readbyqxmd.com/read/29147107/debated-agronomy-public-discourse-and-the-future-of-biotechnology-policy-in-ghana
#1
Joseph A Braimah, Kilian N Atuoye, Siera Vercillo, Carrie Warring, Isaac Luginaah
This paper examines the highly contested and ongoing biotechnology (Bt) policy-making process in Ghana. We analyse media content on how Bt is viewed in the context of Ghana's parliamentary debate on the Plant Breeders Bill and within the broader public policy-making literature. This paper does not seek to take a position on Bt or the Bill, but to understand how policy actors influence the debate with political and scientific rhetoric in Ghana. The study reveals that in the midst of scientific uncertainties of Bt's potential for sustainable agriculture production and food security, policy decisions that encourage its future adoption are heavily influenced by health, scientific, economic, environmental and political factors dictated by different ideologies, values and norms...
2017: Global Bioethics, Problemi di Bioetica
https://www.readbyqxmd.com/read/29131507/the-disruptive-effect-of-lysozyme-on-the-bacterial-cell-wall-explored-by-an-in-silico-structural-outlook
#2
Emiliano D Primo, Lisandro H Otero, Francisco Ruiz, Sebastián Klinke, Walter Giordano
The bacterial cell wall, a structural unit of peptidoglycan polymer comprised of glycan strands consisting of a repeating disaccharide motif [N-acetylglucosamine (NAG) and N-acetylmuramylpentapeptide (NAM pentapeptide)], encases bacteria and provides structural integrity and protection. Lysozymes are enzymes that break down the bacterial cell wall and disrupt the bacterial life cycle by cleaving the linkage between the NAG and NAM carbohydrates. Lab exercises focused on the effects of lysozyme on the bacterial cell wall are frequently incorporated in biochemistry classes designed for undergraduate students in diverse fields as biology, microbiology, chemistry, agronomy, medicine, and veterinary medicine...
November 13, 2017: Biochemistry and Molecular Biology Education
https://www.readbyqxmd.com/read/29058049/bayesian-estimation-and-use-of-high-throughput-remote-sensing-indices-for-quantitative-genetic-analyses-of-leaf-growth
#3
Robert L Baker, Wen Fung Leong, Nan An, Marcus T Brock, Matthew J Rubin, Stephen Welch, Cynthia Weinig
We develop Bayesian function-valued trait models that mathematically isolate genetic mechanisms underlying leaf growth trajectories by factoring out genotype-specific differences in photosynthesis. Remote sensing data can be used instead of leaf-level physiological measurements. Characterizing the genetic basis of traits that vary during ontogeny and affect plant performance is a major goal in evolutionary biology and agronomy. Describing genetic programs that specifically regulate morphological traits can be complicated by genotypic differences in physiological traits...
October 20, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/29046522/geography-drives-agronomy
#4
Ryan Scarrow
No abstract text is available yet for this article.
October 2017: Nature Plants
https://www.readbyqxmd.com/read/28991254/the-draft-genome-of-tropical-fruit-durian-durio-zibethinus
#5
Bin Tean Teh, Kevin Lim, Chern Han Yong, Cedric Chuan Young Ng, Sushma Ramesh Rao, Vikneswari Rajasegaran, Weng Khong Lim, Choon Kiat Ong, Ki Chan, Vincent Kin Yuen Cheng, Poh Sheng Soh, Sanjay Swarup, Steven G Rozen, Niranjan Nagarajan, Patrick Tan
Durian (Durio zibethinus) is a Southeast Asian tropical plant known for its hefty, spine-covered fruit and sulfury and onion-like odor. Here we present a draft genome assembly of D. zibethinus, representing the third plant genus in the Malvales order and first in the Helicteroideae subfamily to be sequenced. Single-molecule sequencing and chromosome contact maps enabled assembly of the highly heterozygous durian genome at chromosome-scale resolution. Transcriptomic analysis showed upregulation of sulfur-, ethylene-, and lipid-related pathways in durian fruits...
November 2017: Nature Genetics
https://www.readbyqxmd.com/read/28985572/post-photosynthetic-carbon-partitioning-to-sugar-alcohols-and-consequences-for-plant-growth
#6
REVIEW
Kathryn Dumschott, Andreas Richter, Wayne Loescher, Andrew Merchant
The occurrence of sugar alcohols is ubiquitous among plants. Physiochemical properties of sugar alcohols suggest numerous primary and secondary functions in plant tissues and are often well documented. In addition to functions arising from physiochemical properties, the synthesis of sugar alcohols may have significant influence over photosynthetic, respiratory, and developmental processes owing to their function as a large sink for photosynthates. Sink strength is demonstrated by the high concentrations of sugar alcohols found in plant tissues and their ability to be readily transported...
October 3, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28976363/physical-root-soil-interactions
#7
Evelyne Kolb, Valérie Legue, Marie-Béatrice Bogeat-Triboulot
Plant root system development is highly modulated by the physical properties of the soil and especially by its mechanical resistance to penetration. The interplay between the mechanical stresses exerted by the soil and root growth is of particular interest for many communities, in agronomy and soil science as well as in biomechanics and plant morphogenesis. In contrast to shoots, roots apices must exert a growth pressure to penetrate strong soils and reorient their growth trajectory to cope with obstacles like stones or hardpans or to follow the tortuous paths of the soil porosity...
October 4, 2017: Physical Biology
https://www.readbyqxmd.com/read/28900432/assessing-and-exploiting-functional-diversity-in-germplasm-pools-to-enhance-abiotic-stress-adaptation-and-yield-in-cereals-and-food-legumes
#8
REVIEW
Sangam L Dwivedi, Armin Scheben, David Edwards, Charles Spillane, Rodomiro Ortiz
There is a need to accelerate crop improvement by introducing alleles conferring host plant resistance, abiotic stress adaptation, and high yield potential. Elite cultivars, landraces and wild relatives harbor useful genetic variation that needs to be more easily utilized in plant breeding. We review genome-wide approaches for assessing and identifying alleles associated with desirable agronomic traits in diverse germplasm pools of cereals and legumes. Major quantitative trait loci and single nucleotide polymorphisms (SNPs) associated with desirable agronomic traits have been deployed to enhance crop productivity and resilience...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28894167/carbon-sequestration-potential-and-physicochemical-properties-differ-between-wildfire-charcoals-and-slow-pyrolysis-biochars
#9
Cristina Santín, Stefan H Doerr, Agustin Merino, Thomas D Bucheli, Rob Bryant, Philippa Ascough, Xiaodong Gao, Caroline A Masiello
Pyrogenic carbon (PyC), produced naturally (wildfire charcoal) and anthropogenically (biochar), is extensively studied due to its importance in several disciplines, including global climate dynamics, agronomy and paleosciences. Charcoal and biochar are commonly used as analogues for each other to infer respective carbon sequestration potentials, production conditions, and environmental roles and fates. The direct comparability of corresponding natural and anthropogenic PyC, however, has never been tested. Here we compared key physicochemical properties (elemental composition, δ(13)C and PAHs signatures, chemical recalcitrance, density and porosity) and carbon sequestration potentials of PyC materials formed from two identical feedstocks (pine forest floor and wood) under wildfire charring- and slow-pyrolysis conditions...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28865265/nitrification-inhibitors-mitigated-reactive-gaseous-nitrogen-intensity-in-intensive-vegetable-soils-from-china
#10
Changhua Fan, Bo Li, Zhengqin Xiong
Nitrification inhibitors, a promising tool for reducing nitrous oxide (N2O) losses and promoting nitrogen use efficiency by slowing nitrification, have gained extensive attention worldwide. However, there have been few attempts to explore the broad responses of multiple reactive gaseous nitrogen emissions of N2O, nitric oxide (NO) and ammonia (NH3) and vegetable yield to nitrification inhibitor applications across intensive vegetable soils in China. A greenhouse pot experiment with five consecutive vegetable crops was performed to assess the efficacies of two nitrification inhibitors, namely, nitrapyrin and dicyandiamide on reactive gaseous nitrogen emissions, vegetable yield and reactive gaseous nitrogen intensity in four typical vegetable soils representing the intensive vegetable cropping systems across mainland China: an Acrisol from Hunan Province, an Anthrosol from Shanxi Province, a Cambisol from Shandong Province and a Phaeozem from Heilongjiang Province...
January 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/28838321/a-review-on-plant-importance-biotechnological-aspects-and-cultivation-challenges-of-jojoba-plant
#11
REVIEW
Jameel R Al-Obaidi, Mohammed Farouq Halabi, Nasser S AlKhalifah, Shanavaskhan Asanar, Abdulrahman A Al-Soqeer, M F Attia
Jojoba is considered a promising oil crop and is cultivated for diverse purposes in many countries. The jojoba seed produces unique high-quality oil with a wide range of applications such as medical and industrial-related products. The plant also has potential value in combatting desertification and land degradation in dry and semi-dry areas. Although the plant is known for its high-temperature and high-salinity tolerance growth ability, issues such as its male-biased ratio, relatively late flowering and seed production time hamper the cultivation of this plant...
August 24, 2017: Biological Research
https://www.readbyqxmd.com/read/28821792/the-contribution-of-human-agricultural-activities-to-increasing-evapotranspiration-is-significantly-greater-than-climate-change-effect-over-heihe-agricultural-region
#12
Minzhong Zou, Jun Niu, Shaozhong Kang, Xiaolin Li, Hongna Lu
Evapotranspiration (ET) is a major component linking the water, energy, and carbon cycles. Understanding changes in ET and the relative contribution rates of human activity and of climate change at the basin scale is important for sound water resources management. In this study, changes in ET in the Heihe agricultural region in northwest China during 1984-2014 were examined using remotely-sensed ET data with the Soil and Water Assessment Tool (SWAT). Correlation analysis identified the dominant factors that influence change in ET per unit area and those that influence change in total ET...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810219/industrial-hemp-as-a-potential-bioenergy-crop-in-comparison-with-kenaf-switchgrass-and-biomass-sorghum
#13
Lalitendu Das, Enshi Liu, Areej Saeed, David W Williams, Hongqiang Hu, Chenlin Li, Allison E Ray, Jian Shi
This study takes combined field trial, lab experiment, and economic analysis approaches to evaluate the potential of industrial hemp in comparison with kenaf, switchgrass and biomass sorghum. Agronomy data suggest that the per hectare yield (5437kg) of industrial hemp stem alone was at a similar level with switchgrass and sorghum; while the hemp plants require reduced inputs. Field trial also showed that ∼1230kg/ha hemp grain can be harvested in addition to stems. Results show a predicted ethanol yield of ∼82gallons/dry ton hemp stems, which is comparable to the other three tested feedstocks...
November 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28802707/boosting-innate-immunity-to-sustainably-control-diseases-in-crops
#14
REVIEW
Valerie Nicaise
Viruses cause epidemics in all major crops, threatening global food security. The development of efficient and durable resistance able to withstand viral attacks represents a major challenge for agronomy, and relies greatly on the understanding of the molecular dialogue between viral pathogens and their hosts. Research over the last decades provided substantial advances in the field of plant-virus interactions. Remarkably, the advent of studies of plant innate immunity has recently offered new strategies exploitable in the field...
October 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28713395/economic-and-environmental-assessment-of-seed-and-rhizome-propagated-miscanthus-in-the-uk
#15
Astley Hastings, Michal Mos, Jalil A Yesufu, Jon McCalmont, Kai Schwarz, Reza Shafei, Chris Ashman, Chris Nunn, Heinrich Schuele, Salvatore Cosentino, Giovanni Scalici, Danilo Scordia, Moritz Wagner, John Clifton-Brown
Growth in planted areas of Miscanthus for biomass in Europe has stagnated since 2010 due to technical challenges, economic barriers and environmental concerns. These limitations need to be overcome before biomass production from Miscanthus can expand to several million hectares. In this paper, we consider the economic and environmental effects of introducing seed based hybrids as an alternative to clonal M. x giganteus (Mxg). The impact of seed based propagation and novel agronomy was compared with current Mxg cultivation and used in 10 commercially relevant, field scale experiments planted between 2012 and 2014 in the United Kingdom, Germany, and Ukraine...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28649444/reverse-engineering-highlights-potential-principles-of-large-gene-regulatory-network-design-and-learning
#16
Clément Carré, André Mas, Gabriel Krouk
Inferring transcriptional gene regulatory networks from transcriptomic datasets is a key challenge of systems biology, with potential impacts ranging from medicine to agronomy. There are several techniques used presently to experimentally assay transcription factors to target relationships, defining important information about real gene regulatory networks connections. These techniques include classical ChIP-seq, yeast one-hybrid, or more recently, DAP-seq or target technologies. These techniques are usually used to validate algorithm predictions...
2017: NPJ Systems Biology and Applications
https://www.readbyqxmd.com/read/28497959/characterization-of-agronomy-grain-physicochemical-quality-and-nutritional-property-of-high-lysine-35r-transgenic-rice-with-simultaneous-modification-of-lysine-biosynthesis-and-catabolism
#17
COMPARATIVE STUDY
Qingqing Yang, Hongyu Wu, Qianfeng Li, Ruxu Duan, Changquan Zhang, Samuel Saiming Sun, Qiaoquan Liu
Lysine is the first limiting essential amino acid in rice. We previously constructed a series of transgenic rice lines to enhance lysine biosynthesis (35S), down-regulate its catabolism (Ri), or simultaneously achieve both metabolic effects (35R). In this study, nine transgenic lines, three from each group, were selected for both field and animal feeding trials. The results showed that the transgene(s) caused no obvious effects on field performance and main agronomic traits. Mature seeds of transgenic line 35R-17 contained 48-60-fold more free lysine than in wild type and had slightly lower apparent amylose content and softer gel consistency...
May 31, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28485012/genotype-environment-seeding-rate-and-top-dressed-nitrogen-effects-on-end-use-quality-of-modern-nebraska-winter-wheat
#18
Madhav Bhatta, Teshome Regassa, Devin J Rose, P Stephen Baenziger, Kent M Eskridge, Dipak K Santra, Rachana Poudel
BACKGROUND: Fine-tuning production inputs such as seeding rate, nitrogen (N), and genotype may improve end-use quality of hard red winter wheat (Triticum aestivium L.) when growing conditions are unpredictable. Studies were conducted at the Agronomy Research Farm (ARF; Lincoln, NE, USA) and the High Plains Agricultural Laboratory (HPAL; Sidney, NE, USA) in 2014 and 2015 in Nebraska, USA, to determine the effects of genotype (6), environment (4), seeding rate (3), and flag leaf top-dressed N (0 and 34 kg N ha(-1) ) on the end-use quality of winter wheat...
May 8, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28475036/determinants-of-host-species-range-in-plant-viruses
#19
Benoît Moury, Frédéric Fabre, Eugénie Hébrard, Rémy Froissart
Prediction of pathogen emergence is an important field of research, both in human health and in agronomy. Most studies of pathogen emergence have focused on the ecological or anthropic factors involved rather than on the role of intrinsic pathogen properties. The capacity of pathogens to infect a large set of host species, i.e. to possess a large host range breadth (HRB), is tightly linked to their emergence propensity. Using an extensive plant virus database, we found that four traits related to virus genome or transmission properties were strongly and robustly linked to virus HRB...
April 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28371610/short-exogenous-peptides-regulate-expression-of-cle-knox1-and-grf-family-genes-in-nicotiana-tabacum
#20
L I Fedoreyeva, T A Dilovarova, V V Ashapkin, Yu Ts Martirosyan, V Kh Khavinson, P N Kharchenko, B F Vanyushin
Exogenous short biologically active peptides epitalon (Ala-Glu-Asp-Gly), bronchogen (Ala-Glu-Asp-Leu), and vilon (Lys-Glu) at concentrations 10(-7)-10(-9) M significantly influence growth, development, and differentiation of tobacco (Nicotiana tabacum) callus cultures. Epitalon and bronchogen, in particular, both increase growth of calluses and stimulate formation and growth of leaves in plant regenerants. Because the regulatory activity of the short peptides appears at low peptide concentrations, their action to some extent is like that of the activity of phytohormones, and it seems to have signaling character and epigenetic nature...
April 2017: Biochemistry. Biokhimii︠a︡
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