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https://www.readbyqxmd.com/read/29780273/ectopic-ring-zinc-finger-gene-from-hot-pepper-induces-totally-different-genes-in-lettuce-and-tobacco
#1
Mahipal Singh Kesawat, Dong Kyun Kim, Naheed Zeba, Mi Chung Suh, Xinli Xia, Choo Bong Hong
Advances in molecular biology have improved crops through transferring genes from one organism to new hosts, and these efforts have raised concerns about potential unexpected outcomes. Here, we provide evidence that a gene with a specific function in one organism can yield completely different effects in a new host. CaRZFP1 is a C3HC4-type RING zinc finger protein gene previously isolated from a cDNA library for heat-stressed hot pepper. In our previous work investigating in vivo CaRZFP1 function, we transferred CaRZFP1 into tobacco; transgenic tobacco exhibited enhanced growth and tolerance to abiotic stresses...
2018: Molecular Breeding: New Strategies in Plant Improvement
https://www.readbyqxmd.com/read/29780200/growing-fresh-food-on-future-space-missions-environmental-conditions-and-crop-management
#2
Esther Meinen, Tom Dueck, Frank Kempkes, Cecilia Stanghellini
This paper deals with vegetable cultivation that could be faced in a space mission. This paper focusses on optimization, light, temperature and the harvesting process, while other factors concerning cultivation in space missions, i.e. gravity, radiation, were not addressed. It describes the work done in preparation of the deployment of a mobile test facility for vegetable production of fresh food at the Neumayer III Antarctic research station. A selection of vegetable crops was grown under varying light and temperature conditions to quantify crop yield response to climate factors that determine resource requirement of the production system...
May 17, 2018: Scientia Horticulturae
https://www.readbyqxmd.com/read/29777948/escherichia-coli-hyperepidemic-clone-st410-a-harboring-bla-ctx-m-15-isolated-from-fresh-vegetables-in-a-municipal-market-in-quito-ecuador
#3
David Ortega-Paredes, Pedro Barba, Santiago Mena-López, Nathaly Espinel, Jeannete Zurita
Dissemination of Extended spectrum β-lactamases (ESBL) Enterobacteriaceae is a major medical threat. Vegetables and fruits, which are usually consumed raw, are a very suitable pathway for the spread of these bacteria from farm-to-fork. However, limited information exists regarding resistant bacteria and epidemic clones that are disseminated in vegetables and tap water in South America. We processed a total of 90 samples in triplicate of nine typically consumed raw vegetables from a central municipal market, and tap water samples were processed from twenty-one locations in Quito, Ecuador...
April 30, 2018: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29775940/combined-toxicity-of-microcystin-lr-and-copper-on-lettuce-lactuca-sativa-l
#4
Qing Cao, Alan D Steinman, Xiang Wan, Liqiang Xie
Microcystins and copper commonly co-exist in the natural environment, but their combined toxicity remains unclear, especially in terrestrial plants. The present study investigated the toxicity effects of microcystin-LR (0, 5, 50, 500, 1000 μg L-1 ) and copper (0, 50, 500, 1000, 2000 μg L-1 ), both individually and in mixture, on the germination, growth and oxidative response of lettuce. The bioaccumulation of microcystin-LR and copper was also evaluated. Results showed that the decrease in lettuce germination induced by copper alone was not significantly different from that induced by the mixture, and the combined toxicity assessment showed a simple additive effect...
May 10, 2018: Chemosphere
https://www.readbyqxmd.com/read/29772090/lcm-seq-reveals-the-crucial-role-of-lssoc1-in-heat-promoted-bolting-of-lettuce-lactuca-sativa-l
#5
Zijing Chen, Wensheng Zhao, Danfeng Ge, Yingyan Han, Kang Ning, Chen Luo, Shenglin Wang, Renyi Liu, Xiaolan Zhang, Qian Wang
Lettuce (Lactuca sativa L.) is one of the most economically important vegetables. The floral transition in lettuce is accelerated under high temperatures, which can significantly decrease yields. However, the molecular mechanism underlying the floral tranition in lettuce is poorly known. Using laser capture microdissection coupled with RNA sequencing, we isolated shoot apical meristem cells from the bolting-sensitive lettuce line S39 at four critical stages of development. Subsequently, we screened specifically for the flowering-related gene LsSOC1 during the floral transition through comparative transcriptomic analysis...
May 17, 2018: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29760818/short-term-crossover-study-on-the-effect-of-orthogonalized-deep-grooved-posterior-artificial-teeth-on-the-masticatory-efficiency-of-complete-denture-wearers
#6
Yuki Hashimoto, Kyoko Sugimoto, Yuki Tanaka, Hikaru Sugimoto, Shogo Minagi
Background: Mastication has been regarded to play an important role in achieving quality daily life for the elderly. On the occlusal surface of posterior artificial teeth, parallel grooves of 1 mm depth and 1 mm width with an inter-groove distance of 2 mm have been found to significantly improve masticatory efficiency on a mechanical simulator. Materials and Methods: In the present study, the effect of the grooved design on masticatory efficiency in edentulous subjects using a short-term crossover trial was evaluated...
2018: Open Dentistry Journal
https://www.readbyqxmd.com/read/29752189/portion-sizes-from-24-hour-dietary-recalls-differed-by-sex-among-those-who-selected-the-same-portion-size-category-on-a-food-frequency-questionnaire
#7
Minji Kang, Song-Yi Park, Carol J Boushey, Lynne R Wilkens, Kristine R Monroe, Loïc Le Marchand, Laurence N Kolonel, Suzanne P Murphy, Hee-Young Paik
BACKGROUND: Accounting for sex differences in food portions may improve dietary measurement; however, this factor has not been well examined. OBJECTIVE: The aim of this study was to examine sex differences in reported food portions from 24-hour dietary recalls (24HDRs) among those who selected the same portion size category on a quantitative food frequency questionnaire (QFFQ). DESIGN: This study was conducted with a cross-sectional design...
May 8, 2018: Journal of the Academy of Nutrition and Dietetics
https://www.readbyqxmd.com/read/29745756/transfer-and-redistribution-of-salmonella-typhimurium-lt2-and-escherichia-coli-o157-h7-during-pilot-scale-processing-of-baby-spinach-cilantro-and-romaine-lettuce
#8
Haley S Smolinski, Siyi Wang, Lin Ren, Yuhuan Chen, Barbara Kowalcyk, Ellen Thomas, Jane VAN Doren, Elliot T Ryser
Several outbreaks of foodborne illness traced to leafy greens and culinary herbs have been hypothesized to involve cross-contamination during washing and processing. This study aimed to assess the redistribution of Salmonella Typhimurium LT2 during pilot-scale production of baby spinach and cilantro and redistribution of Escherichia coli O157:H7 during pilot-scale production of romaine lettuce. Four inoculated surrogate:uninoculated product weight ratios (10:100, 5:100, 1:100, and 0.5:100) and three inoculation levels (103 , 101 , and 10-1 CFU/g) were used for the three commodities...
May 10, 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29738464/allelopathic-responses-of-rice-seedlings-under-some-different-stresses
#9
Tran Dang Khanh, La Hoang Anh, La Tuan Nghia, Khuat Huu Trung, Pham Bich Hien, Do Minh Trung, Tran Dang Xuan
The objective of this study was to evaluate the allelopathic responses of rice seedlings under submergence stress at different temperatures (10, 25, 32, and 37 °C). The results showed that a wide range of allelopathic responses of rice seedlings depended on varieties and stress conditions, with temperature was being a key factor. It showed that the extracts of rice seedlings induced significant suppression on lettuce and radish seedling germination, but had negligible allelopathic effects on growth of barnyardgrass, whilst the emergence and growth of natural weeds was stimulated...
May 8, 2018: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29736920/preparation-of-acryloyl-%C3%AE-cyclodextrin-silica-hybrid-monolithic-column-and-its-application-in-pipette-tip-solid-phase-extraction-and-hplc-analysis-of-methyl-parathion-and-fenthion
#10
Ling Chen, Xueping Dang, Youhong Ai, Huaixia Chen
An acryloyl β-cyclodextrin-silica hybrid monolithic column for pipette tip solid-phase extraction and high-performance liquid chromatography determination of methyl parathion and fenthion have been prepared through a sol-gel polymerization method. The synthesis conditions, including the volume of cross-linker and the ratio of inorganic solution to organic solution, were optimized. The prepared monolithic column was characterized by thermogravimetric analysis, scanning electron microscopy and Fourier transform infrared spectroscopy...
May 7, 2018: Journal of Separation Science
https://www.readbyqxmd.com/read/29735067/survival-and-interaction-of-escherichia-coli-o104-h4-on-arabidopsis-thaliana-and-lettuce-lactuca-sativa-in-comparison-to-e-coli-o157-h7-influence-of-plant-defense-response-and-bacterial-capsular-polysaccharide
#11
Hyein Jang, Karl R Matthews
Shiga toxin-producing Escherichia coli (STEC) has been associated with illnesses and outbreaks linked to fresh vegetables, prompting a growing public health concern. Most studies regarding interactions of STEC on fresh produce focused on E. coli O157:H7. Limited information is available about survival or fitness of E. coli O104:H4, non-O157 pathogen that was linked to one of the largest outbreaks of hemolytic uremic syndrome in 2011. In this study, survival of E. coli O104:H4 was evaluated on Arabidopsis thaliana plant and lettuce for 5 days compared with E...
June 2018: Food Research International
https://www.readbyqxmd.com/read/29732325/microbiological-evaluation-of-ready-to-eat-iceberg-lettuce-during-shelf-life-and-effectiveness-of-household-washing-methods
#12
Daniela Bencardino, Luca Agostino Vitali, Dezemona Petrelli
The aim of this study was to assess the microbiological quality of ready-to-eat (RTE) iceberg lettuce. Our investigation was based on the consumption tendency of university students considered a target market for this product. A total of 78 RTE samples were collected from chain supermarkets and analysed for the enumeration of aerobic mesophilic count (AMC), Escherichia coli and the detection of Salmonella spp. and Listeria monocytogenes . All samples were negative for the presence of pathogens. The mean value of AMC at the beginning, in the middle and after the expiration date was: 6...
March 31, 2018: Italian Journal of Food Safety
https://www.readbyqxmd.com/read/29730706/complete-genome-sequence-of-lettuce-chordovirus-1-isolated-from-cultivated-lettuce-in-france
#13
Laurence Svanella-Dumas, Ιason Τsarmpopoulos, Armelle Marais, Sébastien Theil, Chantal Faure, Jonathan Gaudin, Thierry Candresse
Double-stranded RNAs purified from cultivated (Lactuca sativa) or wild (L. serriola) lettuce from southwest France were analyzed by high-throughput sequencing. For both samples, BLAST annotation revealed contigs with homology to Betaflexiviridae family members. The full genome sequence of the isolate from cultivated lettuce (JG1) was completed (8,536 nucleotides [nt], excluding the poly(A) tail). The sequence of the 3' half of the genome (4,800 nt) of a wild lettuce isolate (P22) was determined and found to share 95...
May 5, 2018: Archives of Virology
https://www.readbyqxmd.com/read/29729568/bioaccumulation-of-microcystin-congeners-in-soil-plant-system-and-human-health-risk-assessment-a-field-study-from-lake-taihu-region-of-china
#14
Qing Cao, Alan D Steinman, Xiang Wan, Liqiang Xie
A 120-day field study was carried out near Lake Taihu to evaluate the bioaccumulation of microcystin (MC) congeners in a soil-plant system, as well as to assess human health risk when consuming edible plants irrigated with MCs-contaminated water. Natural cyanobacteria bloom-containing lake water (lake water) and half-diluted natural cyanobacteria bloom-containing lake water with tap water (half-lake water) were used to irrigate lettuce and rice. An additional treatment involving fertilization with a cyanobacteria bloom was applied just to the lettuce experiment...
May 2, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29729517/genotypic-variation-and-mechanism-in-uptake-and-translocation-of-perfluorooctanoic-acid-pfoa-in-lettuce-lactuca-sativa-l-cultivars-grown-in-pfoa-polluted-soils
#15
Lei Xiang, Lei Chen, Le-Yi Yu, Peng-Fei Yu, Hai-Ming Zhao, Ce-Hui Mo, Yan-Wen Li, Hui Li, Quan-Ying Cai, Dong-Mei Zhou, Ming-Hung Wong
The cultivation of crop cultivars with low pollutant accumulation is an important strategy to reduce the potential health risks of food produced from polluted soils. In this study, we identified three loose-leaf lettuce cultivars with low accumulation of perfluorooctanoic acid (PFOA), a highly toxic and persistent organic pollutant. PFOA concentrations in the shoots of low-PFOA cultivars were 3.7-5.5-fold lower than those of high-PFOA cultivars. The identification of low-PFOA cultivars could contribute to ensuring food safety despite cultivation in highly polluted soils (1 mg/kg) based on the tolerable daily PFOA intake (1...
May 2, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29725921/comparison-of-exposure-to-trace-elements-through-vegetable-consumption-between-a-mining-area-and-an-agricultural-area-in-central-chile
#16
Marcelo Aguilar, Pedro Mondaca, Rosanna Ginocchio, Kooichi Vidal, Sébastien Sauvé, Alexander Neaman
Human exposure to trace elements has been a large concern due to the potential health issues. Accordingly, this study aimed to compare the concentrations of arsenic, copper, and zinc in the edible parts of vegetables grown in a mining-agricultural area and in an exclusively agricultural area and to compare the potential human health risks of consuming vegetables from both areas. The consumption habits of the studied population were extracted from the 2010 National Alimentary Survey of Chile. In most cases, the concentrations of trace elements in the edible tissues of vegetables (lettuce, spinach, garlic, onion, carrot, potato, sweet corn, and tomato) were higher in the mining-agricultural area than those in the control area...
May 3, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29722967/influences-of-air-oxygen-nitrogen-and-carbon-dioxide-nanobubbles-on-seeds-germination-and-plants-growth
#17
Ahmed Khaled Abdella Ahmed, Xiaonan Shi, Likun Hua, Leidy Manzueta, Weihua Qing, Taha Marhaba, Wen Zhang
Nanobubbles (NBs) hold promise in green and sustainable engineering applications in diverse fields (e.g., water/wastewater treatment, food processing, medical applications, and agriculture). This study investigated the effects of four types of NBs on seed germination and plant growth. Air, oxygen, nitrogen, and carbon dioxide NBs were generated and dispersed in tap water. Different plants including lettuce, carrot, fava bean, and tomato were used in germination and growth tests. The seeds in water containing NBs exhibited 6-25% higher germination rates...
May 3, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29715602/characterization-of-spoilage-markers-in-modified-atmosphere-packaged-iceberg-lettuce
#18
Angelos-Gerasimos Ioannidis, Frederiek-Maarten Kerckhof, Yasmine Riahi Drif, Mike Vanderroost, Nico Boon, Peter Ragaert, Bruno De Meulenaer, Frank Devlieghere
Fresh cut iceberg lettuce spoilage was studied considering the microbial and biochemical activity, the formation of volatile organic compounds (VOC) and consumer acceptability. Lettuce was packaged under three different packaging conditions and stored at 4 °C for 10 days: anaerobic packaging (ANAER), equilibrium modified atmosphere packaging with 3% O2 (EMAP) and perforated packages (AIR). Results indicated a clear distinction between packaging conditions. EMAP and AIR resulted in a short shelf life (≤5...
April 22, 2018: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29710610/biomass-decaying-and-elemental-release-of-aquatic-macrophyte-detritus-in-waterways-of-the-indian-river-lagoon-basin-south-florida-usa
#19
Xiaohong Zhou, Zhenli He, Fenghua Ding, Liguang Li, Peter J Stoffella
Decaying experiments of four major aquatic macrophyte detritus, namely cattail (Typha orientalis), water lettuce (Pistia stratiotes), hydrilla (Hydrilla verticillata) and maidencane (Panicum hemitomon), were conducted using the litterbag technique in the stormwater detention pond of South Florida, USA. Dry weight and chemical composition of remaining biomass were dynamically determined during the 185-day decay experiment. The results showed that decomposition rates (k), and the derived turnover (t50% and t95% ) were species specific...
April 20, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29709895/importance-of-soil-temperature-for-the-growth-of-temperate-crops-under-a-tropical-climate-and-functional-role-of-soil-microbial-diversity
#20
Nurul Syazwani Ahmad Sabri, Zuriati Zakaria, Shaza Eva Mohamad, A Bakar Jaafar, Hirofumi Hara
A soil cooling system that prepares soil for temperate soil temperatures for the growth of temperate crops under a tropical climate is described herein. Temperate agriculture has been threatened by the negative impact of temperature increases caused by climate change. Soil temperature closely correlates with the growth of temperate crops, and affects plant processes and soil microbial diversity. The present study focuses on the effects of soil temperatures on lettuce growth and soil microbial diversity that maintains the growth of lettuce at low soil temperatures...
April 28, 2018: Microbes and Environments
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