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https://www.readbyqxmd.com/read/29230971/electroless-coated-magnetic-three-dimensional-graphene-with-silver-nanoparticles-used-for-the-determination-of-pesticides-in-fruit-samples
#1
Hassan Sereshti, Zahra Afsharsaveh, Hamid Gaikani, Hamid Rashidi Nodeh
A new type of adsorbent composed of magnetic three-dimensional graphene coated with silver nanoparticles was synthesized by an electroless technique and used in the magnetic solid-phase extraction of selected pesticides (fenitrothion, chlorpyrifos, and hexaconazole) before gas chromatography with micro-electron capture detector. The adsorbent was characterized using Fourier-transform infrared spectroscopy, X-ray diffraction, vibrating sample magnetometry and field-emission scanning electron microscopy. The important extraction parameters such as pH, adsorbent dose, extraction time and desorption conditions were investigated...
December 12, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/29230823/decreasing-fructose-1-6-bisphosphate-aldolase-activity-reduces-plant-growth-and-tolerance-to-chilling-stress-in-tomato-seedlings
#2
Bingbing Cai, Qiang Li, Fengjiao Liu, Huangai Bi, Xizhen Ai
In northern China, low temperatures are the most common abiotic stresses for tomato plants cultivated in solar-greenhouse in winter. We recently found that the expression and enzyme activity of fructose 1,6-bisphosphate aldolases in tomato (FBAs), which are important enzymes in the Calvin-Benson cycle (CBC), were significantly altered in tomato seedlings subjected to heat/cold stresses. In order to study the role of FBA in photosynthesis and in regulating cold stress responses of tomato seedlings (Solanum lycopersicum), we transformed a tomato inbred line (FF) with RNA interference (RNAi) vector containing SlFBA7 reverse tandem repeat sequence...
December 12, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/29230273/is-your-lunch-salad-safe-to-eat-occurrence-of-bacterial-pathogens-and-potential-for-pathogen-growth-in-pre-packed-ready-to-eat-mixed-ingredient-salads
#3
REVIEW
Karin Söderqvist
As part of a trend toward healthy convenience foods, ready-to-eat (RTE) mixed-ingredient salads have become popular products among consumers. A mixed-ingredient salad contains combinations of raw (e.g. leafy vegetables and tomatoes) and processed (e.g. chicken, salmon, ham, pasta and couscous) ingredients. Contamination of leafy vegetables can occur during any step in the production chain and, since there is no step that kills pathogens, a completely safe final product can never be guaranteed. Meat ingredients, for example poultry meat and ham, are generally heat-treated before preparation, but may be contaminated after this treatment, e...
2017: Infection Ecology & Epidemiology
https://www.readbyqxmd.com/read/29229901/functional-reduction-in-pollination-through-herbivore-induced-pollinator-limitation-and-its-potential-in-mutualist-communities
#4
Paul Glaum, André Kessler
Plant-pollinator interactions are complex because they are affected by both interactors' phenotypes and external variables. Herbivory is one external variable that can have divergent effects on the individual and the population levels depending on specific phenotypic plastic responses of a plant to herbivory. In the wild tomato, Solanum peruvianum, herbivory limits pollinator visits, which reduces individual plant fitness due to herbivore-induced chemical defenses and signaling on pollinators (herbivore-induced pollinator limitation)...
December 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/29229696/the-slcbl10-calcineurin-b-like-protein-ensures-plant-growth-under-salt-stress-by-regulating-na-and-ca2-homeostasis
#5
Isabel Egea, Benito Pineda, Ana Ortíz-Atienza, Félix A Plasencia, Stephanie Drevensek, Begoña García-Sogo, Fernando J Yuste-Lisbona, Javier Barrero, Alejandro Atarés, Francisco B Flores, Fredy Barneche, Trinidad Angosto, Carmen Capel, Julio Salinas, Wim Vriezen, Elisabeth Esch, Chris Bowler, Maria C Bolarin, Vicente Moreno, Rafael Lozano
Characterization of a new tomato T-DNA mutant allowed for the isolation of the CALCINEURIN B-LIKE PROTEIN 10 (SlCBL10) gene whose lack of function was responsible for the severe alterations observed in the shoot apex and reproductive organs under salinity conditions. Physiological studies proved that SlCBL10 gene is required to maintain a proper low Na+/Ca2+ ratio in growing tissues allowing tomato growth under salt stress. Expression analysis of the main responsible genes for Na+ compartmentalization [i.e...
December 11, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29227543/edible-coating-using-a-chitosan-based-colloid-incorporating-grapefruit-seed-extract-for-cherry-tomato-safety-and-preservation
#6
Jin Sung Won, Seung Jo Lee, Hyeon Hwa Park, Kyung Bin Song, Sea C Min
Grapefruit seed extract (GSE)-containing chitosan-based coating was developed and applied to cherry tomatoes to protect them from Salmonella invasion and improve their storability. The coating colloids were produced by mixing a chitosan colloid (1% [w/w] chitosan) with GSE at various concentrations (0.5%, 0.7%, 1.0%, and 1.2% [w/w]) using high-shear mixing (10000 rpm, 2 min). Coatings with chitosan colloids containing GSE at 0.0%, 0.5%, 0.7%, and 1.0% (w/w) inactivated Salmonella on cherry tomatoes by 1.0 ± 0...
December 11, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/29224342/lycosides-unusual-carotenoid-derived-terpenoid-glycosides-from-a-vegetable-juice-inhibit-asexual-reproduction-of-the-plant-pathogen-phytophthora
#7
Rika Iwai, Chunguang Han, Sudhakar V S Govindam, Makoto Ojika
Vegetable juices, typical culture media for the plant pathogen Phytophthora, effectively induce its asexual reproduction (zoosporangia formation). However, some chromatographic fractions from a vegetable juice were found to inhibit the asexual reproduction. Bioassay-guided chromatographic steps led to the isolation of four novel compounds named lycosides A-D, 1-4, that could be metabolic products from a carotenoid. They showed 50% inhibitory activity against the asexual reproduction of P. capsici at 2.1 - 7...
December 9, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29224131/characterization-of-tomato-leaf-curl-purple-vein-virus-a-new-monopartite-new-world-begomovirus-infecting-tomato-in-northeast-brazil
#8
M A Macedo, L C Albuquerque, M R Maliano, J O Souza, M R Rojas, A K Inoue-Nagata, R L Gilbertson
A new begomovirus species was identified from tomato plants with upward leaf curling and purple vein symptoms, which was first identified in the Piaui state of Northeast (NE) Brazil in 2014. Tomato leaf samples were collected in 2014 and 2016, and PCR with degenerate primers revealed begomovirus infection. Rolling circle amplification and restriction enzyme digestion indicated a single genomic DNA of ~ 2.6 kb. Cloning and sequencing revealed a genome organization similar to DNA-A components of New World (NW) bipartite begomoviruses, with no DNA-B...
December 9, 2017: Archives of Virology
https://www.readbyqxmd.com/read/29224128/identification-of-a-new-begomovirus-infecting-duranta-repens-in-pakistan
#9
Sidra Anwar, Muhammad Tahir
Ornamental perennial plants may serve as reservoirs for viruses that infect field crops. Duranta repens is an ornamental shrub that frequently exhibits leaf curl symptoms typical of begomoviral infection. Two begomoviruses or DNA-A components (isolates 57SA and 58SA) along with a DNA-B component (31SA) were identified in a symptomatic D. repens plant. Isolates 57SA and 58SA showed the highest nucleotide sequence identity of 90% and 92.2% to catharanthus yellow mosaic virus (CaYMV) and chilli leaf curl India virus (ChiLCINV), respectively, whereas 31SA shared the highest nucleotide sequence identity of 95...
December 9, 2017: Archives of Virology
https://www.readbyqxmd.com/read/29223880/tomato-plants-use-non-enzymatic-antioxidant-pathways-to-cope-with-moderate-uv-a-b-irradiation-a-contribution-to-the-use-of-uv-a-b-in-horticulture
#10
N Mariz-Ponte, R J Mendes, S Sario, J M P Ferreira de Oliveira, P Melo, C Santos
Plants developed receptors for solar UV-A/B radiation, which regulate a complex network of functions through the plant's life cycle. However, greenhouse grown crops, like tomato, are exposed to strongly reduced UV radiation, contrarily to their open-field counterparts. A new paradigm of modern horticulture is to supplement adequate levels of UV to greenhouse cultures, inducing a positive mild stress necessary to stimulate oxidative stress pathways and antioxidant mechanisms. Protected cultures of Solanum (cv MicroTom) were supplemented with moderate UV-A (1h and 4h) and UV-B (1min and 5min) doses during the flowering/fruiting period...
December 6, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29223878/constitutive-gibberellin-response-in-grafted-tomato-modulates-root-to-shoot-signaling-under-drought-stress
#11
Lucas Aparecido Gaion, Carolina Cristina Monteiro, Flávio José Rodrigues Cruz, Davi Rodrigo Rossatto, Isabel López-Díaz, Esther Carrera, Joni Esrom Lima, Lázaro Eustáquio Pereira Peres, Rogério Falleiros Carvalho
Plants are sessile organisms that must perceive and respond to various environmental constraints throughout their life cycle. Among these constraints, drought stress has become the main limiting factor to crop production around the world. Water deprivation is perceived primarily by the roots, which efficiently signal the shoot to trigger drought responses in order to maximize a plant's ability to survive. In this study, the tomato (Solanum lycopersicum L.) mutant procera (pro), with a constitutive response to gibberellin (GA), and its near isogenic line cv...
December 6, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29223482/reactor-performance-and-energy-analysis-of-solid-state-anaerobic-co-digestion-of-dairy-manure-with-corn-stover-and-tomato-residues
#12
Yangyang Li, Fuqing Xu, Yu Li, Jiaxin Lu, Shuyan Li, Ajay Shah, Xuehua Zhang, Hongyu Zhang, Xiaoyan Gong, Guoxue Li
Anaerobic co-digestion is commonly believed to be benefical for biogas production. However, additional of co-substrates may require additional energy inputs and thus affect the overall energy efficiency of the system. In this study, reactor performance and energy analysis of solid state anaerobic digestion (SS-AD) of tomato residues with dairy manure and corn stover were investigated. Different fractions of tomato residues (0, 20, 40, 60, 80 and 100%, based on volatile solid weight (VS)) were co-digested with dairy manure and corn stover at 15% total solids...
December 6, 2017: Waste Management
https://www.readbyqxmd.com/read/29223343/biotic-factors-that-induce-the-tomato-ve1-r-gene
#13
Christian Danve Castroverde, Xin Xu, Ross N Nazar, Jane Robb
In tomato, Verticillium resistance is determined by the Ve gene locus encoding two leucine-rich repeat-receptor-like proteins (Ve1, Ve2). The resistance function usually is attributed to Ve1 alone, with two known alleles: Ve1, encoding a resistance protein, and ve1, with a premature stop codon encoding a truncated product. We have examined further Ve-gene expression in resistant and susceptible near-isolines of Verticillium-infected Craigella tomatoes, using both quantitative RT-PCR and an alternative RFLP assay...
December 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/29223340/silencing-of-histone-deacetylase-slhdt3-delays-fruit-ripening-and-suppresses-carotenoid-accumulation-in-tomato
#14
Jun-E Guo, Zongli Hu, Fenfen Li, Lincheng Zhang, Xiaohui Yu, Boyan Tang, Guoping Chen
The acetylation levels of histones on lysine residues are regulated by histone acetyltransferases and histone deacetylases, which play an important but understudied role in the control of gene expression in plants. There is an increasing research focus on histone deacetylation in crops, but to date, there is little information regarding tomato. With the aim of characterizing the tomato HD2 family of histone deacetylases, an RNA interference (RNAi) expression vector of SlHDT3 was constructed and transformed into tomato plants...
December 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/29223339/microrna396a-5p-and-3p-induce-tomato-disease-susceptibility-by-suppressing-target-genes-and-upregulating-salicylic-acid
#15
Lei Chen, Jun Meng, Junmiao Zhai, Pinsan Xu, Yushi Luan
Plants have evolved a variety of mechanisms to perceive and resist the assault of pathogens. The biotrophs, necrotrophs and hemibiotrophs are types of plant pathogens that activate diverse salicylic acid (SA) and jasmonic acid (JA) signaling pathways. In this study we showed that the expressions of miR396a-5p and -3p in Solanum lycopersicum (S. lycopersicum) were both down-regulated after infection by hemibiotroph Phytophthora infestans (P. infestans) and necrotroph Botrytis cinerea (B. cinerea) infection. Overexpression of miR396a-5p and -3p in transgenic tomato enhanced the susceptibility of S...
December 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/29222904/dietary-patterns-change-over-two-years-in-early-adolescent-girls-in-hawai-i
#16
Michelle Ann Mosley, Jinan C Banna, Eunjung Lim, Marie Kainoa Fialkowski, Rachel Novotny
BACKGROUND AND OBJECTIVES: In investigating diet-disease relationships, examination of dietary patterns allows for conclusions to be drawn based on overall intake. This study characterized dietary patterns of early adolescent girls over a two-year period and examined the relationship between dietary patterns and body mass index (BMI). METHODS AND STUDY DESIGN: Cross-sectional analyses were performed using longitudinal data from food records of early adolescent girls (n=148) 9 to 14 years in Hawai'i from the Female Adolescent Maturation (FAM) study...
2018: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29222887/relationship-between-umami-taste-acuity-with-sweet-or-bitter-taste-acuity-and-food-selection-in-japanese-women-university-students
#17
Masaru Kubota, Chikako Toda, Ayako Nagai-Moriyama
BACKGROUND AND OBJECTIVES: Although there are many studies on the umami receptor and its signaling pathway, literature on the effect of umami taste acuity on dietary choices in healthy subjects is limited. The current study aims to clarify the relationship between umami taste acuity with sweet or bitter taste acuity, food preference and intake. METHODS AND STUDY DESIGN: Forty-two healthy Japanese female university students were enrolled. The acuity for umami, sweet, and bitter tastes was evaluated using the filter-paper disc method...
2018: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29222655/levels-dietary-intake-and-health-risk-of-potentially-toxic-metals-in-vegetables-fruits-and-cereal-crops-in-pakistan
#18
Javed Nawab, Saad Farooqi, Wang Xiaoping, Sardar Khan, Asad Khan
Food safety is a major concern worldwide and human beings are frequently exposed to potentially toxic metals (PTMs) through consumption of vegetables, fruits, and cereal crops grown in contaminated areas. The present study investigates the concentrations of PTMs such as chromium (Cr), nickel (Ni), zinc (Zn), arsenic (As), cadmium (Cd), and lead (Pb) in the foodstuffs (fruits, vegetables, and cereals) collected from different markets of Khyber Pakhtunkhwa, Pakistan. Samples of fruits (banana, tangerine, apple, and guava), vegetables (tomato, onion, potato, pea, and lady finger), and cereals (rice, kidney beans, and chick peas) were acid-extracted and analyzed using ICP-MS...
December 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29218408/transcription-profiling-and-identification-of-infection-related-genes-in-phytophthora-cactorum
#19
Xiao-Ren Chen, Shen-Xin Huang, Ye Zhang, Gui-Lin Sheng, Bo-Yue Zhang, Qi-Yuan Li, Feng Zhu, Jing-You Xu
Phytophthora cactorum, an oomycete pathogen, infects more than 200 plant species within several plant families. To gain insight into the repertoire of the infection-related genes of P. cactorum, Illumina RNA-Seq was used to perform a global transcriptome analysis of three life cycle stages of the pathogen, mycelia (MY), zoospores (ZO) and germinating cysts with germ tubes (GC). From over 9.8 million Illumina reads for each library, 18,402, 18,569 and 19,443 distinct genes were identified for MY, ZO and GC libraries, respectively...
December 7, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/29218053/marker-development-for-phylogenomics-the-case-of-orobanchaceae-a-plant-family-with-contrasting-nutritional-modes
#20
Xi Li, Baohai Hao, Da Pan, Gerald M Schneeweiss
Phylogenomic approaches, employing next-generation sequencing (NGS) techniques, have revolutionized systematic and evolutionary biology. Target enrichment is an efficient and cost-effective method in phylogenomics and is becoming increasingly popular. Depending on availability and quality of reference data as well as on biological features of the study system, (semi-)automated identification of suitable markers will require specific bioinformatic pipelines. Here, we established a highly flexible bioinformatic pipeline, BaitsFinder, to identify putative orthologous single copy genes (SCGs) and to construct bait sequences in a single workflow...
2017: Frontiers in Plant Science
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