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https://www.readbyqxmd.com/read/29055027/pharmacological-and-gene-regulation-properties-point-to-the-slhak5-k-transporter-as-a-system-for-high-affinity-cs-uptake-in-tomato-plants
#1
Reyes Rodenas, Manuel Nieves-Cordones, Rosa María Rivero, Vicente Martinez, Francisco Rubio
Potassium (K(+) ) and Cesium (Cs(+) ) are chemically similar but while K(+) is an essential nutrient, Cs(+) can be toxic for living organisms, plants included. Two different situations could lead to problems derived from the presence of Cs(+) in agricultural systems: (1) presence of Cs(+) at high concentrations that could produce toxic effects on plants and (2) presence of micromolar concentrations of radiocesium, which can be accumulated in the plant and affect animal and human health through the food chain...
October 21, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/29052969/long-distance-aba-transport-can-mediate-distal-tissue-responses-by-affecting-local-aba-concentrations
#2
Wenrao Li, Carlos de Ollas, Ian C Dodd
Environmental stresses that perturb plant water relations influence abscisic acid (ABA) concentrations, but it is unclear whether long-distance ABA transport contributes to changes in local ABA levels. To determine the physiological relevance of ABA transport, we made reciprocal- and self-grafts of ABA-deficient flacca mutant and wild-type (WT) tomato plants, in which low phosphorus (P) conditions decreased ABA concentrations while salinity increased ABA concentrations. Whereas foliar ABA concentrations in the WT scions were rootstock independent under normal conditions, salinity resulted in long-distance transport of ABA: flacca scions had approximately twice as much ABA when grafted on WT rootstocks compared to flacca rootstocks...
October 20, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/29052471/a-review-about-lycopene-induced-nuclear-hormone-receptor-signalling-in-inflammation-and-lipid-metabolism-via-still-unknown-endogenous-apo-10%C3%A2-lycopenoids
#3
Catherine Caris-Veyrat, Ada L Garcia, Eric Reynaud, Renata Lucas, Gamze Aydemir, Ralph Rühl
Lycopene is the red pigment in tomatoes and tomato products and is an important dietary carotenoid found in the human organism. Lycopene-isomers, oxidative lycopene metabolites and apo-lycopenoids are found in the food matrix. Lycopene intake derived from tomato consumption is associated with alteration of lipid metabolism and a lower incidence of cardiovascular diseases (CVD). Lycopene is mainly described as a potent antioxidant but novel studies are shifting towards its metabolites and their capacity to mediate nuclear receptor signalling...
October 20, 2017: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/29051767/combined-effects-of-irrigation-regime-genotype-and-harvest-stage-determine-tomato-fruit-quality-and-aptitude-for-processing-into-puree
#4
Alexandre Arbex de Castro Vilas Boas, David Page, Robert Giovinazzo, Nadia Bertin, Anne-Laure Fanciullino
Industry tomatoes are produced under a range of climatic conditions and practices which significantly impact on main quality traits of harvested fruits. However, the quality of tomato intended for processing is currently addressed on delivery through color and Brix only, whereas other traits are overlooked. Very few works provided an integrated view of the management of tomato puree quality throughout the chain. To gain insights into pre- and post-harvest interactions, four genotypes, two water regimes, three maturity stages, and two processes were investigated...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29051751/evaluation-of-different-pcr-based-assays-and-lamp-method-for-rapid-detection-of-phytophthora-infestans-by-targeting-the-ypt1-gene
#5
Mehran Khan, Benjin Li, Yue Jiang, Qiyong Weng, Qinghe Chen
Late blight, caused by the oomycete Phytophthora infestans, is one of the most devastating diseases affecting potato and tomato worldwide. Early diagnosis of the P. infestans pathogen causing late blight should be the top priority for addressing disease epidemics and management. In this study, we performed a loop-mediated isothermal amplification (LAMP) assay, conventional polymerase chain reaction (PCR), nested PCR, and real-time PCR to verify and compare the sensitivity and specificity of the reaction based on the Ypt1 (Ras-related protein) gene of P...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29051198/abscisic-acid-induced-reactive-oxygen-species-are-modulated-by-flavonols-to-control-stomata-aperture
#6
Justin Watkins, Jordan M Chapman, Gloria K Muday
Abscisic acid (ABA) increases reactive oxygen species (ROS) in guard cells to close Arabidopsis stomata. In Solanum lycopersicum we find that ABA increased ROS is followed by stomatal closure and both responses are blocked by inhibitors of ROS-producing respiratory burst oxidase enzymes. ABA-induced ROS sensor fluorescence accumulates in the nucleus, chloroplasts, and in endomembranes. Accumulation of flavonol antioxidants in guard cells, but not surrounding pavement cells, were visualized by confocal microscopy using a flavonol-specific fluorescent dye...
October 19, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29049338/growing-plants-on-oily-nutrient-poor-soil-using-a-native-symbiotic-fungus
#7
Timothy S Repas, D Michael Gillis, Zakia Boubakir, Xiaohui Bao, Gary J Samuels, Susan G W Kaminskyj
The roots of land plants associate with microbes, including fungal symbionts that can confer abiotic stress tolerance. Bitumen extraction following oil-sand surface mining in the Athabasca region of Alberta, Canada removes plant nutrients but leaves a petrochemical residue, making the coarse tailings (CT) hostile to both plants and microbes. We isolated an endophyte strain of the Ascomycete Trichoderma harzianum we call TSTh20-1 (hereafter, TSTh) from a dandelion that was naturally growing on CT. TSTh colonization allowed tomato, wheat, and remediation seed mixtures to germinate and their seedlings to flourish on CT without the use of fertilizer...
2017: PloS One
https://www.readbyqxmd.com/read/29048567/green-fruited-solanum-habrochaites-lacks-fruit-specific-carotenogenesis-due-to-metabolic-and-structural-blocks
#8
Himabindu Vasuki Kilambi, Kalyani Manda, Avanish Rai, Chaitanya Charakana, Jayram Bagri, Rameshwar Sharma, Yellamaraju Sreelakshmi, Christine Raines
Members of the tomato clade exhibit a wide diversity in fruit color, but the mechanisms governing inter-species diversity of coloration are largely unknown. The carotenoid profiles, carotenogenic gene expression and proteome profiles of green-fruited Solanum habrochaites (SH), orange-fruited S. galapagense, and red-fruited S. pimpinellifolium were compared with cultivated tomato [S. lycopersicum cv. Ailsa Craig (SL)] to decipher the molecular basis of coloration diversity. Green-fruited SH, though it showed normal expression of chromoplast-specific phytoene synthase1 and lycopene β-cyclase genes akin to orange/red-fruited species, failed to accumulate lycopene and β-carotene...
October 13, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29046571/induced-defences-in-plants-reduce-herbivory-by-increasing-cannibalism
#9
John Orrock, Brian Connolly, Anthony Kitchen
Plants are attacked by myriad herbivores, and many plants exhibit anti-herbivore defences. We tested the hypothesis that induced defences benefit tomato plants by encouraging insects to eat other members of their species. We found that defences that promote cannibalism benefit tomatoes in two ways: cannibalism directly reduces herbivore abundance, and cannibals eat significantly less plant material. This previously unknown means of defence may alter plant-herbivore dynamics, plant evolution and pathogen transmission...
August 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/29046027/-frequency-of-skin-reactivity-to-food-allergens-in-allergic-patients
#10
Heriberto Camero-Martínez, Aída Inés López-García, Daniela Rivero-Yeverino, Chrystopherson Gengyny Caballero-López, Oswaldo Arana-Muñoz, Sergio Papaqui-Tapia, Isabel Cristina Rojas-Méndez, Elizabeth Vázquez-Rojas
BACKGROUND: Food allergy is deemed to have a worldwide prevalence ranging from 2 to 10 %. OBJECTIVE: To determine the frequency of skin reactivity to food allergens by age groups. METHODS: Cross-sectional, descriptive, prolective, observational study. Patients aged from 2 to 64 years with symptoms consistent with allergic disease were included. Skin prick tests were carried out with food allergens. Frequencies and percentages were estimated...
July 2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
https://www.readbyqxmd.com/read/29046014/tomato-cry1a-plays-a-critical-role-in-the-regulation-of-phytohormone-homeostasis-plant-development-and-carotenoid-metabolism-in-fruits
#11
Chao-Chao Liu, Golam Jalal Ahammed, Guo-Ting Wang, Chang-Jie Xu, Kun-Song Chen, Yan-Hong Zhou, Jing-Quan Yu
Blue light photoreceptors, cryptochromes (CRYs), regulate multiple aspects of plant growth and development. However, our knowledge of CRYs is predominantly based on model plant Arabidopsis at early growth stage. In this study, we elucidated functions of CRY1a gene in mature tomato (Solanum lycopersicum) plants by using cry1a mutants and CRY1a overexpressing lines (OE-CRY1a-1 and OE-CRY1a-2). In comparison with wild-type plants, cry1a mutants are relatively tall, accumulate low biomass and bear more fruits, whereas OE-CRY1a plants are short stature, and they not only flower lately but also bear less fruits...
October 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29045757/elevated-co2-increases-photosynthesis-in-fluctuating-irradiance-regardless-of-photosynthetic-induction-state
#12
Elias Kaiser, Dianfan Zhou, Ep Heuvelink, Jeremy Harbinson, Alejandro Morales, Leo F M Marcelis, Robert Sharwood
Leaves are often exposed to fluctuating irradiance, which limits assimilation. Elevated CO2 enhances dynamic photosynthesis (i.e. photosynthesis in fluctuating irradiance) beyond its effects on steady-state photosynthesis rates. Studying the role of CO2 in dynamic photosynthesis is important for understanding plant responses to changing atmospheric CO2 partial pressures. The rise of photosynthesis after a step-wise increase to 1000 μmol m-2 s-1, the loss of photosynthetic induction after irradiance decreases, and rates of photosynthesis during sinusoidal changes in irradiance were studied in tomato (Solanum lycopersicum L...
October 13, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29044606/the-genetic-architecture-of-photosynthesis-and-plant-growth-related-traits-in-tomato
#13
Franklin Magnum de Oliveira Silva, Gabriel Lichtenstein, Saleh Alseekh, Laise Rosado-Souza, Mariana Conte, Vanessa Fuentes Suguiyama, Bruno Silvestre Lira, Dimitrios Fanourakis, Björn Usadel, Leonardo Lopes Bhering, Fábio M DaMatta, Ronan Sulpice, Wagner L Araújo, Magdalena Rossi, Nathalia de Setta, Alisdair R Fernie, Fernando Carrari, Adriano Nunes-Nesi
To identify genomic regions involved in the regulation of fundamental physiological processes such as photosynthesis and respiration, a population of Solanum pennellii introgression lines (ILs) was analyzed. We determined phenotypes for physiological, metabolic and growth related traits, including gas-exchange and chlorophyll fluorescence parameters. Data analysis allowed the identification of 208 physiological and metabolic QTL with 33 of these being associated to smaller intervals of the genomic regions, termed BINs...
October 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29043485/nitrate-assimilation-pathway-nap-role-of-structural-nit-and-transporter-ntr1-genes-in-fusarium-oxysporum-f-sp-lycopersici-growth-and-pathogenicity
#14
Lucia Gomez-Gil, Jesus Camara Almiron, Patricia Lizett Rodriguez Carrillo, Cindy Nayely Olivares Medina, Gustavo Bravo Ruiz, Pamela Romo Rodriguez, Alma Rosa Corrales Escobosa, Felix Gutierrez Corona, M Isabel Roncero
The tomato pathogen Fusarium oxysporum f.sp. lycopersici possesses the capability to use nitrate as the only nitrogen source under aerobic and anaerobic conditions and to activate virulence-related functions when cultivated in the presence of nitrate, but not in ammonium. The genome of F. oxysporum f.sp. lycopersici encodes three paralogs nitrate reductase (NR) genes (nit1, nit2 and nit3) and one predicted ortholog of the Aspergillus nidulans high-affinity nitrate/nitrite transporters NtrA and NtrB, named ntr1...
October 17, 2017: Current Genetics
https://www.readbyqxmd.com/read/29040739/papaya-cpein3a-and-cpnac2-cooperatively-regulate-carotenoid-biosynthesis-related-genes-cppds2-4-cplcy-e-and-cpchy-b-during-fruit-ripening
#15
Chang-Chun Fu, Yan-Chao Han, Jian-Fei Kuang, Jian-Ye Chen, Wang-Jin Lu
Papaya is an important tropical fruit with a rich source of carotenoids. The ripening of papaya is a physiological and metabolic process with remarkable changes including carotenoids accumulation, which depends primarily on the action of ethylene. Ethylene response is mediated by a transcriptional cascade involving the transcription factor families of EIN3/EILs and ERFs. Although ERF members have been reported to control carotenoids production in Arabidopsis and tomato, whether EIN3/EILs are also involved in carotenoid biosynthesis during fruit ripening remains unclear...
October 12, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29040660/potential-of-three-trap-crops-in-managing-nezara-viridula-hemiptera-pentatomidae-on-tomatoes-in-florida
#16
T L Gordon, M Haseeb, L H B Kanga, J C Legaspi
The southern green stink bug, Nezara viridula (L.) (Hemiptera: Pentatomidae), is a serious insect pest of tomatoes in Florida. In this study, we examined the use of three species of trap crops to manage N. viridula in North Florida tomato crops in 2014 and 2015. We used striped sunflower (Helianthus annuus) (Asterales: Asteraceae) and wild game feed sorghum (Sorghum bicolor) (Poales: Poaceae) in both years, but different species of millet each year: browntop millet (Panicum ramosum) (Poales: Poaceae) in 2014 and pearl millet (Pennisetum glaucum) (Poales: Poaceae) in 2015...
October 11, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29038452/involvement-of-ubiquitin-conjugating-enzyme-e2-gene-family-in-ripening-process-and-response-to-cold-and-heat-stress-of-vitis-vinifera
#17
Yingying Gao, Yi Wang, Haiping Xin, Shaohua Li, Zhenchang Liang
Ubiquitin-conjugating (UBC) E2 enzyme plays crucial roles in plant growth and development. Limited information can describe the function of UBC enzyme E2 in grapes. A total of 43 UBC enzyme E2 genes with conserved UBC domain were identified in grapes. These genes were divided into five groups based on phylogenetic tree with tomatoes. Sequence analyses indicated that VvUBCs in the same group possessed similar gene structures and conserved motifs. Gene distribution in chromosomes was uneven, and gene duplication existed in 36 VvUBCs...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29037726/%C3%AE-fe2o3-magnetic-nanoparticle-functionalized-with-carboxylated-multi-walled-carbon-nanotube-for-magnetic-solid-phase-extractions-and-determinations-of-sudan-dyes-and-para-red-in-food-samples
#18
Ersin Kılınç, Kadir Serdar Çelik, Havin Bilgetekin
Hybrid nanostructures composed of γ-Fe2O3 (maghemite) and carboxylated-multi walled carbon nanotube (cMWCNT) were used for the magnetic solid phase extractions and determination of Sudan I, II, III, IV, Para Red, Sudan Black B and Sudan Red 7B in chili products. High performance liquid chromatography (HPLC) was employed for the measurements. Limit of quantification (LOQ) values were found in the range 0.44-2.82ngmL(-1) for analytes. The best extraction parameters were determined as pH 8.0, 40mg of magnetic nanoparticle, 4...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29037503/growth-kinetics-of-escherichia-coli-o157-h7-on-the-epicarp-of-fresh-vegetables-and-fruits
#19
Mariel Gullian-Klanian, Maria José Sánchez-Solis
Despite the increasing reports on the incidence of fresh vegetables and fruits as a possible vehicle for human pathogens, there is currently limited knowledge on the growth potential of Escherichia coli O157:H7 on different plant substrates. This study analyzed the selective adhesion and growth of E. coli O157:H7 on chili habanero (Capsicum chinense L.), cucumber (Cucumis sativus), radish (Raphanus sativus), tomato (Lycopersicon esculentum), beet (Beta vulgaris subsp. vulgaris), and onion (Allium cepa L.) under laboratory conditions...
August 30, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29036450/crosstalk-between-nitric-oxide-and-mpk1-2-mediates-cold-acclimation-induced-chilling-tolerance-in-tomato
#20
Xiangzhang Lv, Shibei Ge, Golam Jalal Ahammed, Xun Xiang, Zhixin Guo, Jingquan Yu, Yanhong Zhou
The participation of nitric oxide (NO) in the responses of plants towards biotic and abiotic stresses is well established. However, the mechanism involved particularly in cold acclimation-induced chilling tolerance remains elusive. Here we show the cold acclimation induced-chilling tolerance was associated with inductions of nitrate reductase (NR)-dependent NO production, S<iS-nitrosylated glutathione reductase (GSNOR) activity and mitogen-activated protein kinases MPK1/2 activation in tomato plants. Silencing of NR<NRi resulted in decreased GSNOR activity and MPK1/2 activation, which subsequently compromised cold acclimation-induced chilling tolerance...
September 22, 2017: Plant & Cell Physiology
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