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https://www.readbyqxmd.com/read/28330265/isolation-and-characterization-of-plant-synergistic-bacteria-capable-of-degrading-xenobiotics-from-oil-spillage-sites
#1
Indranil De, Sarika Gupta
Oil spillage sites primarily contain various types of hydrocarbons, such as linear chain, polycyclic, and aromatic compounds, posing several detrimental effects on plants. Results from our previous study showed an alteration of various metabolomic parameters, indirectly resulting in an observable decline of growth in the mung seedlings upon incubation with phenol, toluene, xylene, and hexane. This study evaluates the role of these compounds upon plant growth and focusses to mitigate the effect of the same, using some isolated plant synergistic bacteria...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328973/differing-metabolic-responses-to-salt-stress-in-wheat-barley-addition-lines-containing-different-7h-chromosomal-fragments
#2
Eva Darko, Krisztián Gierczik, Orsolya Hudák, Péter Forgó, Magda Pál, Edina Türkösi, Viktória Kovács, Sándor Dulai, Imre Majláth, István Molnár, Tibor Janda, Márta Molnár-Láng
Salinity-induced osmotic, ionic and oxidative stress responses were investigated on Asakaze/Manas wheat/barley addition lines 7H, 7HL and 7HS, together with their barley (salt-tolerant) and wheat (relatively salt-sensitive) parents. Growth, photosynthetic activity, chlorophyll degradation, proline, glycine betaine accumulation, sugar metabolism, Na+ and K+ uptake and transport processes and the role of polyamines and antioxidants were studied in young plants grown in hydroponic culture with or without salt treatment...
2017: PloS One
https://www.readbyqxmd.com/read/28321482/development-and-nitrate-reductase-activity-of-sugarcane-inoculated-with-five-diazotrophic-strains
#3
Silvana Gomes Dos Santos, Flaviane da Silva Ribeiro, Camila Sousa da Fonseca, Willian Pereira, Leandro Azevedo Santos, Veronica Massena Reis
Diazotrophs are able to stimulate plant growth. This study aimed at evaluating the effect of inoculation of five diazotrophic strains on growth promotion and nitrate reductase (NR, EC 1.7.1.1) activity in sugarcane. An experiment was carried out from three stages of cultivation: sprouting, tubes, and in hydroponics. On the first two stages, seven treatments were adopted: uninoculated control; mixed inoculation with five strains; and individual inoculation with Gluconacetobacter diazotrophicus (Gd), Herbaspirillum rubrisubalbicans (Hr), Herbaspirillum seropedicae (Hs), Nitrospirillum amazonense (Na), and Paraburkholderia tropica (Pt)...
March 20, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28303536/cadmium-adsorption-chelation-and-compartmentalization-limit-root-to-shoot-translocation-of-cadmium-in-rice-oryza-sativa-l
#4
Qiang Xu, Changquan Wang, Shigui Li, Bing Li, Qiquan Li, Guangdeng Chen, Weilan Chen, Feng Wang
Strategies to reduce cadmium (Cd) in rice grain, below concentrations that represent serious human health concerns, require that the mechanisms of Cd distribution and accumulation within rice plants be established. Here, a comprehensive hydroponic experiment was performed to investigate the differences in the Cd uptake, chelation and compartmentalization between high (D83B) and low (D62B) Cd-accumulation cultivars contrasting in Cd accumulation in order to establish the roles of these processes in limiting Cd translocation from root to shoot...
March 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28302768/draft-genome-sequence-of-rhizobium-sp-strain-tbd182-an-antagonist-of-the-plant-pathogenic-fungus-fusarium-oxysporum-isolated-from-a-novel-hydroponics-system-using-organic-fertilizer
#5
Yuichiro Iida, Kazuki Fujiwara, Nobutaka Someya, Makoto Shinohara
Rhizobium sp. strain TBD182, isolated from a novel hydroponics system, is an antagonistic bacterium that inhibits the mycelial growth of Fusarium oxysporum but does not eliminate the pathogen. We report the draft genome sequence of TBD182, which may contribute to elucidation of the molecular mechanisms of its fungistatic activity.
March 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28300729/comparison-of-silicon-nanoparticles-and-silicate-treatments-in-fenugreek
#6
Sanam Nazaralian, Ahmad Majd, Saeed Irian, Farzaneh Najafi, Farrokh Ghahremaninejad, Tommy Landberg, Maria Greger
Silicon (Si) fertilization improves crop cultivation and is commonly added in the form of soluble silicates. However, most natural plant-available Si originates from plant formed amorphous SiO2 particles, phytoliths, similar to SiO2-nanoparticles (SiNP). In this work we, therefore, compared the effect by sodium silicate and that of SiNP on Si accumulation, activity of antioxidative stress enzymes catalase, peroxidase, superoxide dismutase, lignification of xylem cell walls and activity of phenylalanine ammonia-lyase (PAL) as well as expression of genes for the putative silicon transporter (PST), defensive (Tfgd 1) and phosphoenolpyruvate carboxykinase (PEPCK) and protein in fenugreek (Trigonella foenum-graecum L...
March 14, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28287458/nitrate-increased-cucumber-tolerance-to-fusarium-wilt-by-regulating-fungal-toxin-production-and-distribution
#7
Jinyan Zhou, Min Wang, Yuming Sun, Zechen Gu, Ruirui Wang, Asanjan Saydin, Qirong Shen, Shiwei Guo
Cucumber Fusarium wilt, induced by Fusarium oxysporum f. sp. cucumerinum (FOC), causes severe losses in cucumber yield and quality. Nitrogen (N), as the most important mineral nutrient for plants, plays a critical role in plant-pathogen interactions. Hydroponic assays were conducted to investigate the effects of different N forms (NH₄⁺ vs. NO₃(‒)) and supply levels (low, 1 mM; high, 5 mM) on cucumber Fusarium wilt. The NO₃(‒)-fed cucumber plants were more tolerant to Fusarium wilt compared with NH₄⁺-fed plants, and accompanied by lower leaf temperature after FOC infection...
March 11, 2017: Toxins
https://www.readbyqxmd.com/read/28273243/effect-of-phosphorus-on-arsenic-uptake-and-metabolism-in-rice-cultivars-differing-in-phosphorus-use-efficiency-and-response
#8
Júlia G Farias, Katieli Bernardy, Raíssa Schwalbert, Bianca K Del Frari, Andrew Meharg, Manus Carey, Anderson C R Marques, Antonio Signes-Pastor, Darlene Sausen, Márcio R W Schorr, Mirian S Tavares, Fernando T Nicoloso
A hydroponic experiment was carried out to investigate the effect of phosphorus (P) nutrition on arsenic (As) uptake and translocation within the seedlings of rice cultivars. The experiment occurred in three stages: I 5 days of acclimatization (nutritive solution); II 10 days under P (0.0 and 0.09 mM) and As (0.0 and 100 mM) treatments; III 5 days under recovery. The As exposure had significant effect reducing dry weights of shoots or roots, resulted in elevated concentrations of As in shoot tissues. BR-IRGA 409 showed the highest susceptibility to As in biomass production and root system parameters regardless the P level...
March 2, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28262313/high-performance-liquid-chromatography-mass-spectrometry-analysis-of-the-parent-drugs-and-their-metabolites-in-extracts-from-cress-lepidium-sativum-grown-hydroponically-in-water-containing-four-non-steroidal-anti-inflammatory-drugs
#9
Lisa Emhofer, Markus Himmelsbach, Wolfgang Buchberger, Christian W Klampfl
In this paper the metabolism of four non-steroidal anti-inflammatory drugs, (ketoprofen, mefenamic acid, naproxen, and diclofenac) by cress (Lepidium sativum) is described. Cress was cultivated hydroponically in water spiked with the parent drugs at levels ranging from 0.01mgL(-1) to 1mgL(-1). Employing an approach based on the analysis of the plant extracts by HPLC coupled either with quadrupole-time-of-flight mass spectrometry, or Orbitrap MS or triple quadrupole (QqQ) MS allowed the identification of twenty substances (sixteen metabolites and four parent drugs)...
March 31, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28261243/genetic-diversity-of-salt-tolerance-in-miscanthus
#10
Chang-Lin Chen, Hanneke van der Schoot, Shiva Dehghan, Claire L Alvim Kamei, Kai-Uwe Schwarz, Heike Meyer, Richard G F Visser, C Gerard van der Linden
Miscanthus is a woody rhizomatous C4 grass that can be used as a CO2 neutral biofuel resource. It has potential to grow in marginal areas such as saline soils, avoiding competition for arable lands with food crops. This study explored genetic diversity for salt tolerance in Miscanthus and discovered mechanisms and traits that can be used to improve the yield under salt stress. Seventy genotypes of Miscanthus (including 57 M. sinensis, 5 M. sacchariflorus, and 8 hybrids) were evaluated for salt tolerance under saline (150 mM NaCl) and normal growing conditions using a hydroponic system...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28261224/aluminum-enhances-growth-and-sugar-concentration-alters-macronutrient-status-and-regulates-the-expression-of-nac-transcription-factors-in-rice
#11
Marcos Moreno-Alvarado, Soledad García-Morales, Libia Iris Trejo-Téllez, Juan Valente Hidalgo-Contreras, Fernando Carlos Gómez-Merino
Aluminum (Al) is a beneficial element for some plant species, especially when used at low concentrations. Though some transcription factors are induced by exposure to this element, no data indicate that Al regulates the expression of NAC genes in rice. In this study we tested the effect of applying 200 μM Al on growth, chlorophyll, amino acids, sugars, macronutrient concentration and regulation of NAC transcription factors gene expression in 24-day-old plants of four rice (Oryza sativa ssp. indica) cultivars: Cotaxtla, Tres Ríos, Huimanguillo and Temporalero, grown hydroponically under greenhouse conditions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28248258/effects-of-al-3-and-la-3-trivalent-metal-ions-on-tomato-fruit-proteomes
#12
Sasikiran Sangireddy, Ikenna Okekeogbu, Zhujia Ye, Suping Zhou, Kevin J Howe, Tara Fish, Theodore W Thannhauser
The tomato (Solanum lycopersicum) ripening process from mature green (MG) to turning and then to red stages is accompanied by the occurrences of physiological and biochemical reactions, which ultimately result in the formation of the flavor, color and texture of ripe fruits. The two trivalent metal ions Al(3+) and La(3+) are known to induce different levels of phytotoxicity in suppressing root growth. This paper aims to understand the impacts of these two metal ions on tomato fruit proteomes. Tomato 'Micro-Tom' plants were grown in a hydroponic culture system supplemented with 50 μM aluminum sulfate (Al₂ (SO4)₃...
February 11, 2017: Proteomes
https://www.readbyqxmd.com/read/28242253/dechlorination-and-chlorine-rearrangement-of-1-2-5-5-6-9-10-heptachlorodecane-mediated-by-the-whole-pumpkin-seedlings
#13
Yanlin Li, Xingwang Hou, Miao Yu, Qunfang Zhou, Jiyan Liu, Jerald L Schnoor, Guibin Jiang
Short chain chlorinated paraffins (SCCPs) are ubiquitously present as persistent organic pollutants in the environment. However, little information on the interaction of SCCPs with plants is currently available. In this work, young pumpkin plants (Cucurbita maxima × C. Moschata) were hydroponically exposed to the congener of chlorinated decane, 1,2,5,5,6,9,10-heptachlorodecane (1,2,5,5,6,9,10-HepCD), to investigate the uptake, translocation and transformation of chlorinated decanes in the intact plants...
February 24, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28241862/transcriptome-analysis-of-lentil-lens-culinaris-medikus-in-response-to-seedling-drought-stress
#14
Dharmendra Singh, Chandan Kumar Singh, Jyoti Taunk, Ram Sewak Singh Tomar, Ashish Kumar Chaturvedi, Kishor Gaikwad, Madan Pal
BACKGROUND: Drought stress is one of the most harmful abiotic stresses in crop plants. As a moderately drought tolerant crop, lentil is a major crop in rainfed areas and a suitable candidate for drought stress tolerance research work. Screening for drought tolerance stress under hydroponic conditions at seedling stage with air exposure is an efficient technique to select genotypes with contrasting traits. Transcriptome analysis provides valuable resources, especially for lentil, as here the information on complete genome sequence is not available...
February 27, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28231558/alleviating-effects-of-calcium-on-cobalt-toxicity-in-two-barley-genotypes-differing-in-cobalt-tolerance
#15
Jonas Lwalaba Wa Lwalaba, Gerald Zvobgo, Liangbo Fu, Xuelei Zhang, Theodore Mulembo Mwamba, Noor Muhammad, Robert Prince Mukobo Mundende, Guoping Zhang
Cobalt (Co) contamination in soils is becoming a severe issue in environment safety and crop production. Calcium (Ca)(,) as a macro-nutrient element, shows the antagonism with many divalent heavy metals and the capacity of alleviating oxidative stress in plants. In this study, the protective role of Ca in alleviating Co stress was hydroponically investigated using two barley genotypes differing in Co toxicity tolerance. Barley seedlings exposed to 100µM Co showed the significant reduction in growth and photosynthetic rate, and the dramatic increase in the contents of reactive oxygen species (ROS), malondialdehyde (MDA), reduced glutathione (GSH) and oxidized glutathione (GSSG), and the activities of anti-oxidative enzymes, with Ea52 (Co-sensitive) being much more affected than Yan66 (Co-tolerant)...
February 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28221949/growth-of-escherichia-coli-o157-h7-non-o157-shiga-toxin-producing-escherichia-coli-and-salmonella-in-water-and-hydroponic-fertilizer-solutions
#16
Angela Shaw, Kara Helterbran, Michael R Evans, Christopher Currey
The desire for local, fresh produce year round is driving the growth of hydroponic growing systems in the United States. Many food crops, such as leafy greens and culinary herbs, grown within hydroponics systems have their root systems submerged in recirculating nutrient-dense fertilizer solutions from planting through harvest. If a foodborne pathogen were introduced into this water system, the risk of contamination to the entire crop would be high. Hence, this study was designed to determine whether Escherichia coli O157:H7, non-O157 Shiga toxin-producing E...
December 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28212511/arsenic-hyperaccumulator-pteris-vittata-efficiently-solubilized-phosphate-rock-to-sustain-plant-growth-and-as-uptake
#17
Jing-Wei Fu, Xue Liu, Yong-He Han, Hanyi Mei, Yue Cao, Letuzia M de Oliveira, Yungen Liu, Bala Rathinasabapathi, Yanshan Chen, Lena Q Ma
Phosphorus (P) is one of the most important nutrients for phytoremediation of arsenic (As)-contaminated soils. In this study, we demonstrated that As-hyperaccumulator Pteris vittata was efficient in acquiring P from insoluble phosphate rock (PR). When supplemented with PR as the sole P source in hydroponic systems, P. vittata accumulated 49% and 28% higher P in the roots and fronds than the -P treatment. In contrast, non-hyperaccumulator Pteris ensiformis was unable to solubilize P from PR. To gain insights into PR solubilization by plants, organic acids in plant root exudates were analyzed by HPLC...
January 31, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28193591/interaction-of-fe-mn-plaque-and-arthrobacter-echigonensis-mn1405-and-uptake-and-translocation-of-cd-by-phytolacca-acinosa-roxb
#18
Xiaochen Huang, Keli Tang, Xuping Xu, Chunting Cai
In this study, hydroponic experiments were conducted to investigate the role of Fe-Mn plaque and Arthrobacter echigonensis MN1405 under different solution Cd levels (0, 2 and 50 mg L(-1)) on Cd uptake and translocation by Phytolacca acinosa Roxb. (P. acinosa). Results showed Cd accumulated by P.acinosa without plaque were mostly distributed in root surface, indicating that an exclusion strategy for Cd tolerance. The formation of Fe-Mn plaque could contribute to the increase in the Cd tolerance of P.acinosa, promotion of the growth, increase in the enhancement of Cd translocation...
May 2017: Chemosphere
https://www.readbyqxmd.com/read/28189051/changes-in-root-hydraulic-conductivity-facilitate-the-overall-hydraulic-response-of-rice-oryza-sativa-l-cultivars-to-salt-and-osmotic-stress
#19
Delong Meng, Wieland Fricke
The aim of the present work was to assess the significance of changes in root AQP gene expression and hydraulic conductivity (Lp) in the regulation of water balance in two hydroponically-grown rice cultivars (Azucena, Bala) which differ in root morphology, stomatal regulation and aquaporin (AQP) isoform expression. Plants were exposed to NaCl (25 mM, 50 mM) and osmotic stress (5%, 10% PEG6000). Root Lp was determined for exuding root systems (osmotic forces driving water uptake; 'exudation Lp') and transpiring plants (hydrostatic forces dominating; 'transpiration-Lp')...
February 2, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28187398/phosphorus-deficiency-modifies-as-translocation-in-the-halophyte-plant-species-atriplex-atacamensis
#20
Delphine Vromman, Juan-Pablo Martínez, Stanley Lutts
Most arsenic in surface soil and water exists primarily in its oxidized form, as arsenate (As(V); AsO4(3-)), which is an analog of phosphate (PO4(3-)). Arsenate can be taken up by phosphate transporters. Atriplex atacamensis Phil. is native to northern Chile (Atacama Desert), and this species can cope with high As concentrations and low P availability in its natural environment. To determine the impact of P on As accumulation and tolerance in A. atacamensis, the plants were cultivated in a hydroponic system under four treatments: no As(V) addition with 323µM phosphate (control); 1000µM As(V) addition with 323µM phosphate; no As(V) and no phosphate; 1000µM As(V) addition and no phosphate...
February 7, 2017: Ecotoxicology and Environmental Safety
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