keyword
MENU ▼
Read by QxMD icon Read
search

Hydroponics

keyword
https://www.readbyqxmd.com/read/28631209/allelopathic-effects-of-exogenous-phenylalanine-a-comparison-of-four-monocot-species
#1
Barbara R Evans, Garima Bali, Art Ragauskas, Riddhi Shah, Hugh O'Neill, Cory Howard, Fayola Lavenhouse, Dawn Ramirez, Kelly Weston, Kelly Ramey, Valerie Cangemi, Brian Kinney, Claudia Partee, Teresa Ware, Brian Davison
Exogenous phenylalanine stunted annual ryegrass but not switchgrass or winter grain rye, with deuterium incorporation up to 3% from phenyalanine-d 8 . Toxicity to duckweed varied with illumination intensity and glucose uptake. Isotopic labeling of biomolecules through biosynthesis from deuterated precursors has successfully been employed for both structural studies and metabolic analysis. Phenylalanine is the precursor of many products synthesized by plants, including the monolignols used for synthesis of lignin...
June 19, 2017: Planta
https://www.readbyqxmd.com/read/28627026/two-nhx-type-transporters-from-helianthus-tuberosus-improve-the-tolerance-of-rice-to-salinity-and-nutrient-deficiency-stress
#2
Yang Zeng, Qing Li, Haiya Wang, Jianliang Zhang, Jia Du, Huimin Feng, Eduardo Blumwald, Ling Yu, Guohua Xu
The NHX-type cation/H(+) transporters in plants have been shown to mediate Na(+) (K(+) )/H(+) exchange for salinity tolerance and K(+) homeostasis. In this study, we identified and characterized two NHX homologues, HtNHX1 and HtNHX2 from an infertile and salinity tolerant species Helianthus tuberosus (cv. Nanyu No.1). HtNHX1 and HtNHX2 share identical 5'- and 3'-UTR and coding regions, except for a 342 bp segment encoding 114 amino acids (L272 to Q385 ) which is absent in HtNHX2. Both hydroponics and soil culture experiments showed that the expression of HtNHX1 or HtNHX2 improved the rice tolerance to salinity...
June 19, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28624590/maleic-acid-assisted-improvement-of-metal-chelation-and-antioxidant-metabolism-confers-chromium-tolerance-in-brassica-juncea-l
#3
Jubayer Al Mahmud, Mirza Hasanuzzaman, Kamrun Nahar, Anisur Rahman, Md Shahadat Hossain, Masayuki Fujita
Chromium (Cr) is a highly toxic environmental pollutant that negatively affects plant growth and development. Thus, remediating Cr from soil or increasing plant tolerance against Cr stress is urgent. Organic acids are recognized as agents of phytoremediation and as exogenous protectants, but using maleic acid (MA) to attain these results has not yet been studied. Therefore, our study investigated the effects of MA on Cr uptake and mitigation of Cr toxicity. We treated 8-d-old Indian mustard (Brassica juncea L...
June 15, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28623437/root-derived-bicarbonate-assimilation-in-response-to-variable-water-deficit-in-camptotheca-acuminate-seedlings
#4
Sen Rao, Yanyou Wu
Water deficit is one of the key factors that limits the carbon (C) assimilation and productivity of plants. The effect of variable water deficit on recently root-derived bicarbonate assimilation in Camptotheca acuminate seedlings was investigated. Three-month-old seedlings were subjected to three water regimes, well-watered (WW), moderate stress (MS), and severe stress (SS) induced by polyethyleneglycol, in conjunction with relatively high (H) and low (L) natural (13)C-abundance of NaHCO3-labeled treatments in hydroponics for 14 days...
June 16, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28620407/antioxidant-responses-induced-by-uvb-radiation-in-deschampsia-antarctica-desv
#5
Hans Köhler, Rodrigo A Contreras, Marisol Pizarro, Rodrigo Cortés-Antíquera, Gustavo E Zúñiga
Deschampsia antarctica Desv. is one of two vascular plants that live in the Maritime Antarctic Territory and is exposed to high levels of ultraviolet-B (UVB) radiation. In this work, antioxidant physiology of D. antarctica was studied in response to UVB induced oxidative changes. Samples were collected from Antarctica and maintained in vitro culture during 2 years. Plants were sub-cultured in a hydroponic system and exposed to 21.4 kJ m(-2) day(-1), emulating summer Antarctic conditions. Results showed rapid and significant increases in reactive oxygen species (ROS) at 3 h, which rapidly decreased...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28614741/iopromide-exposure-in-typha-latifolia-l-evaluation-of-uptake-translocation-and-different-transformation-mechanisms-in-planta
#6
Hao Cui, Martin Hrabě de Angelis, Peter Schröder
Iopromide is frequently detected in water bodies due to its widespread use as an X-ray contrast agent in medicine. Due to its rapid clearance from the human body and its incomplete removal by wastewater treatment, an elevation of its concentration in the environment is observed that might lead to a serious impact on human and environmental health. Alternative or additional removal technologies may be more effective to remove iopromide from the effluents of wastewater treatment facilities, like phytoremediation with aquatic macrophytes...
June 4, 2017: Water Research
https://www.readbyqxmd.com/read/28613869/effect-of-different-elicitors-and-pre-harvest-day-application-on-the-content-of-phytochemicals-and-antioxidant-activity-of-butterhead-lettuce-lactuca-sativa-var-capitata-produced-under-hydroponic-conditions
#7
Jesus Omar Moreno-Escamilla, Emilio Alvarez-Parrilla, Laura A de la Rosa, José Alberto Núñez-Gastélum, Gustavo A González-Aguilar, Joaquin Rodrigo-Garcia
The effect of four elicitors on phytochemical content in two varieties of lettuce was evaluated. The best pre-harvest day for application of each elicitor was chosen. Solutions of arachidonic acid (AA), salicylic acid (SA), methyl jasmonate (MJ), and Harpin protein (HP) were applied by foliar aspersion on lettuce leaves while cultivated under hydroponic conditions. Application of elicitors was done at 15, 7, 5, 3 or 1 day before harvest. Green lettuce showed the highest increase in phytochemical content when elicitors (AA, SA, and HP) were applied on day 7 before harvest...
June 14, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28612342/effect-of-glycine-nitrogen-on-lettuce-growth-under-soilless-culture-a-metabolomics-approach-to-identify-the-main-changes-occurred-in-plant-primary-and-secondary-metabolism
#8
Xiao Yang, Lei Feng, Li Zhao, Xiaosong Liu, Danial Hassani, Danfeng Huang
BACKGROUND: Lettuce is a significant source of antioxidants and bioactive compounds. Nitrate is a cardinal fertilizer in horticulture and influences vegetable yield and quality; however, the negative effects of nitrate on the biosynthesis of flavonoids require further study. It is expected that using fertilizers containing organic N could promote the synthesis of health-promoting compounds. RESULTS: Lettuces were hydroponically cultured in media containing 9 mM nitrate or 9 mM glycine for 4 weeks...
June 14, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28611802/involvement-of-trichoderma-harzianum-epl-1-protein-in-the-regulation-of-botrytis-virulence-and-tomato-defense-related-genes
#9
Eriston V Gomes, Cirano J Ulhoa, Rosa E Cardoza, Roberto N Silva, Santiago Gutiérrez
Several Trichoderma spp. are well known for their ability to: (i) act as important biocontrol agents against phytopathogenic fungi; (ii) function as biofertilizers; (iii) increase the tolerance of plants to biotic and abiotic stresses; and (iv) induce plant defense responses via the production and secretion of elicitor molecules. In this study, we analyzed the gene-regulation effects of Trichoderma harzianum Epl-1 protein during the interactions of mutant Δepl-1 or wild-type T. harzianum strains with: (a) the phytopathogen Botrytis cinerea and (b) with tomato plants, on short (24 h hydroponic cultures) and long periods (4-weeks old plants) after Trichoderma inoculation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28609737/enantioselective-uptake-translocation-and-degradation-of-the-chiral-pesticides-tebuconazole-and-imazalil-by-phragmites-australis
#10
Tao Lv, Pedro N Carvalho, Mònica Escolà Casas, Ulla E Bollmann, Carlos A Arias, Hans Brix, Kai Bester
Phytoremediation of realistic environmental concentrations (10 μg L(-1)) of the chiral pesticides tebuconazole and imazalil by Phragmites australis was investigated. This study focussed on removal dynamics, enantioselective mechanisms and transformation products (TPs) in both hydroponic growth solutions and plant tissues. For the first time, we documented uptake, translocation and metabolisation of these pesticides inside wetland plants, using enantioselective analysis. Tebuconazole and imazalil removal efficiencies from water reached 96...
June 10, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28605187/phytotoxicity-study-on-bidens-sulphurea-sch-bip-as-a-preliminary-approach-for-weed-control
#11
Bruna P da Silva, Mariluce P Nepomuceno, Rosa M Varela, Ascensión Torres, José M G Molinillo, Pedro L C A Alves, Francisco A Macías
Farmers of the Franca region in Brazil observed that Bidens sulphurea was able to eliminate the Panicum maximum weed, which infected coffee plantations, without affecting the crop. In an effort to determine if the inhibitory effects observed were due to the presence of phytotoxic compounds from leaves and roots, a biodirected isolation and spectroscopic characterization has been carried out. The leaf dichloromethane and root acetone extracts were the most active, and the former appeared to be more phytotoxic to the target species, including four weeds...
June 20, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28603945/grafting-response-to-excess-boron-and-expression-analysis-of-genes-coding-boron-transporters-in-tomato
#12
Francesco Di Gioia, Alessio Aprile, Erika Sabella, Pietro Santamaria, Alberto Pardossi, Antonio Miceli, Luigi De Bellis, Eliana Nutricati
Boron (B) is essential for plant growth, however its excess in soil and/or in irrigation water can severely compromise plant growth and yield. The goal of this work was to determine whether grafting onto 'Arnold', a commercial interspecific hybrid (Solanum lycopersicum × S. habrochaites) rootstock, which in a previous study was found to be tolerant to salt stress, could improve tomato (S. lycopersicum L. 'Ikram') tolerance to excess B, and whether this effect is associated with an exclusion mechanism. Non-grafted, self-grafted, and grafted plants were hydroponically grown in a greenhouse with B concentration in the nutrient solution of 0...
June 12, 2017: Plant Biology
https://www.readbyqxmd.com/read/28600794/citric-acid-enhanced-the-antioxidant-defense-system-and-chromium-uptake-by-lemna-minor-l-grown-in-hydroponics-under-cr-stress
#13
Rasham Sallah-Ud-Din, Mujahid Farid, Rashid Saeed, Shafaqat Ali, Muhammad Rizwan, Hafiz Muhammad Tauqeer, Syed Asad Hussain Bukhari
Phytoextraction is a cost-effective and eco-friendly technique for the removal of pollutants, mainly heavy metal(loids) especially from polluted water and metal-contaminated soils. The phytoextraction of heavy metals is, in general, limited due to the low availability of heavy metals in the growth medium. Organic chelators can help to improve the phytoextraction by increasing metal mobility and solubility in the growth medium. The present research was carried out to examine the possibility of citric acid (CA) in improving chromium (Cr) phytoextraction by Lemna minor (duckweed)...
June 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28598215/enhanced-atrazine-removal-by-hydrophyte-bacterium-associations-and-in-vitro-screening-of-the-isolates-for-their-plant-growth-promoting-potential
#14
Anina James, D K Singh, P J Khankhane
Emergent hydrophytes Acorus calamus, Typha latifolia and Phragmites karka and epiphytic root bacteria isolated from their rhizoplanes were exposed to atrazine (5 mg l(-1) and 10 mg l(-1)) individually and in plant‒bacterium combination for 15 days hydroponically. It was observed that A. calamus‒Pseudomonas sp. strain ACB combination was best in decontamination, showing 91% and 87% removal of 5 mg l(-1) and 10 mg l(-1) atrazine. Plant‒bacterium association led to significant increase in atrazine decontamination as compared to decontamination by either plant or bacterium alone indicating synergistic action of the hydrophytes and isolates which led to enhanced atrazine removal...
June 9, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28597425/virus-induced-plasma-membrane-aquaporin-pspip2-1-silencing-inhibits-plant-water-transport-of-pisum-sativum
#15
Juanjuan Song, Guoliang Ye, Zhengjiang Qian, Qing Ye
BACKGROUND: Aquaporins (AQPs) are known to facilitate water transport across cell membranes, but the role of a single AQP in regulating plant water transport, particularly in plants other than Arabidopsis remains largely unexplored. In the present study, a virus-induced gene silencing (VIGS) technique was employed to suppress the expression of a specific plasma membrane aquaporin PsPIP2;1 of Pea plants (Pisum sativum), and subsequent effects of the gene suppression on root hydraulic conductivity (Lpr), leaf hydraulic conductivity (K leaf ), root cell hydraulic conductivity (Lprc), and leaf cell hydraulic conductivity (Lplc) were investigated, using hydroponically grown Pea plants...
December 2016: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28593470/effect-of-selenium-from-selenium-enriched-kale-sprout-versus-other-selenium-sources-on-productivity-and-selenium-concentrations-in-egg-and-tissue-of-laying-hens
#16
Anut Chantiratikul, Orawan Chinrasri, Piyanete Chantiratikul
A 6-week trial was conducted to compare the effect of selenium (Se) from hydroponically produced Se-enriched kale sprout (HPSeKS), sodium selenite (SS), and Se-enriched yeast (SeY) in laying hens. A total of 144 40-week-old hens were randomly divided into four groups, according to a completely randomized design. Each group consisted of four replicates with nine hens per replicate. The dietary treatments were T1 (basal diet) and T2, T3, and T4 (basal diets supplemented with 0.30 mg Se/kg from SS, SeY, and HPSeKS, respectively)...
June 7, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28588384/snp-based-association-analysis-for-seedling-traits-in-durum-wheat-triticum-turgidum-l-durum-desf
#17
Salih A I Sabiel, Sisi Huang, Xin Hu, Xifeng Ren, Chunjie Fu, Junhua Peng, Dongfa Sun
In the present study, 150 accessions of worldwide originated durum wheat germplasm (Triticum turgidum spp. durum) were observed for major seedling traits and their growth. The accessions were evaluated for major seedling traits under controlled conditions of hydroponics at the 13(th), 20(th), 27(th) and 34(th) day-after germination. Biomass traits were measured at the 34(th) day-after germination. Correlation analysis was conducted among the seedling traits and three field traits at maturity, plant height, grain weight and 1000-grain weight observed in four consecutive years...
March 2017: Breeding Science
https://www.readbyqxmd.com/read/28585427/uptake-transport-and-distribution-of-molybdenum-in-two-oilseed-rape-brassica-napus-l-cultivars-under-different-nitrate-ammonium-ratios
#18
Shi-Yu Qin, Xue-Cheng Sun, Cheng-Xiao Hu, Qi-Ling Tan, Xiao-Hu Zhao
OBJECTIVES: To investigate the effects of different nitrate sources on the uptake, transport, and distribution of molybdenum (Mo) between two oilseed rape (Brassica napus L.) cultivars, L0917 and ZS11. METHODS: A hydroponic culture experiment was conducted with four nitrate/ammonium (NO3(-):NH4(+)) ratios (14:1, 9:6, 7.5:7.5, and 1:14) at a constant nitrogen concentration of 15 mmol/L. We examined Mo concentrations in roots, shoots, xylem and phloem sap, and subcellular fractions of leaves to contrast Mo uptake, transport, and subcellular distribution between ZS11 and L0917...
June 2017: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/28582746/development-of-lightweight-aggregates-from-stone-cutting-sludge-plastic-wastes-and-sepiolite-rejections-for-agricultural-and-environmental-purposes
#19
José Manuel Moreno-Maroto, Beatriz González-Corrochano, Jacinto Alonso-Azcárate, Luis Rodríguez, Anselmo Acosta
Three different wastes have been assessed for lightweight aggregate (LWA) manufacturing: granite and marble sludge (COR), sepiolite rejections (SEP) and polyethylene-hexene thermoplastics (P). A preliminary study of the physical and chemical properties of the raw materials was carried out to design proper batches. It was mixed 10% SEP with 90% COR to confer plasticity, and in turn, 0, 2.5, 5 and 10% (w/w) of P was added to check its suitability as a bloating agent. The mixtures were milled, kneaded with water, extruded, shaped into pellets, oven-dried and finally fired at 1100, 1125 and 1150 °C for 4, 8 and 16 min...
June 2, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28578239/bioaccumulation-of-pharmaceutically-active-compounds-and-endocrine-disrupting-chemicals-in-aquatic-macrophytes-results-of-hydroponic-experiments-with-echinodorus-horemanii-and-eichhornia-crassipes
#20
N Pi, J Z Ng, B C Kelly
Information regarding the bioaccumulation behaviour of pharmaceutically active compounds (PhACs) and endocrine disrupting chemicals (EDCs) in aquatic plants is limited. The present study involved controlled hydroponic experiments to assess uptake and elimination rate constants (ku, ke), bioconcentration factors (BCFs) and translocation factors (TFs) of several PhACs and EDCs in two aquatic macrophyte species, including one submerged species (Echinodorus horemanii) and one free-floating species (Eichhornia crassipes)...
June 1, 2017: Science of the Total Environment
keyword
keyword
11217
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"