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https://www.readbyqxmd.com/read/28806720/exploration-of-acute-genotoxic-effects-and-antigenotoxic-potential-of-gambogic-acid-using-allium-cepa-assay
#1
Abhishek Shetty, Thejaswini Venkatesh, Padmanaban S Suresh, Rie Tsutsumi
The plant derived xanthanoid gambogic acid (GA) is well known for its anticancer activity. To date, biological actions of GA on plant system have not been reported. In the present study, we evaluated the potential acute genotoxic activity of GA, and its antigenotoxic potential against H2O2 induced genetic damage using Allium cepa root chromosomal aberration assay under hydroponic conditions. There was a significant decrease in the percentage of mitotic index/prophase index with the increase in clastogenicity percentage in a dose and time-dependent manner when Allium cepa bulbs were exposed to GA at 0...
August 5, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28806524/assessment-of-effects-of-the-long-term-exposure-of-agricultural-crops-to-carbon-nanotubes
#2
Mohamed Hassen Lahiani, Zeid A Nima, Hector Villagarcia, Alexandru S Biris, Mariya Khodakovskaya
Carbon-based nanomaterials (CBNs) were described as nanomaterials possessing abilities of plant growth regulators. Here, we investigated the effects of long-term exposure of multi-walled carbon nanotubes (MWCNTs) on the growth of three important crops (barley, soybean, corn). The cultivation of all tested species was carried in hydroponics supplemented with 50µg/ml of MWCNTs. After 20 weeks of continuous exposure to the nanomaterials, no significant toxic signs on plant development were observed. Several positive phenotypical changes were recorded in addition to the enhancement of photosynthesis in MWCNTs-exposed crops...
August 14, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28805727/leaf-physiological-and-proteomic-analysis-to-elucidate-silicon-induced-adaptive-response-under-salt-stress-in-rosa-hybrida-rock-fire
#3
Prabhakaran Soundararajan, Abinaya Manivannan, Chung Ho Ko, Sowbiya Muneer, Byoung Ryong Jeong
Beneficial effects of silicon (Si) on growth and development have been witnessed in several plants. Nevertheless, studies on roses are merely reported. Therefore, the present investigation was carried out to illustrate the impact of Si on photosynthesis, antioxidant defense and leaf proteome of rose under salinity stress. In vitro-grown, acclimatized Rosa hybrida 'Rock Fire' were hydroponically treated with four treatments, such as control, Si (1.8 mM), NaCl (50 mM), and Si+NaCl. After 15 days, the consequences of salinity stress and the response of Si addition were analyzed...
August 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28803071/responses-of-szarvasi-1-energy-grass-to-sewage-sludge-treatments-in-hydroponics
#4
Ambrus Rév, Brigitta Tóth, Ádám Solti, Gyula Sipos, Ferenc Fodor
Sewage sludge (SS) originating from communal wastewater is a hazardous material but have a potentially great nutritive value. Its disposal after treatment in agricultural lands can be a very economical and safe way of utilization once fast growing, high biomass, perennial plants of renewable energy production are cultivated. Szarvasi-1 energy grass (Elymus elongatus subsp. ponticus cv. Szarvasi-1), a good candidate for this application, was grown in hydroponics in order to assess its metal accumulation and tolerance under increasing SS amendments...
August 1, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28801748/molecular-and-phenotypic-characterization-of-transgenic-wheat-and-sorghum-events-expressing-the-barley-alanine-aminotransferase
#5
Pamela A Peña, Truyen Quach, Shirley Sato, Zhengxiang Ge, Natalya Nersesian, Ismail M Dweikat, Madhavan Soundararajan, Tom Clemente
The expression of a barley alanine aminotransferase gene impacts agronomic outcomes in a C3 crop, wheat. The use of nitrogen-based fertilizers has become one of the major agronomic inputs in crop production systems. Strategies to enhance nitrogen assimilation and flux in planta are being pursued through the introduction of novel genetic alleles. Here an Agrobacterium-mediated approach was employed to introduce the alanine aminotransferase from barley (Hordeum vulgare), HvAlaAT, into wheat (Triticum aestivum) and sorghum (Sorghum bicolor), regulated by either constitutive or root preferred promoter elements...
August 11, 2017: Planta
https://www.readbyqxmd.com/read/28800533/deficiency-and-toxicity-of-boron-alterations-in-growth-oxidative-damage-and-uptake-by-citrange-orange-plants
#6
Asad Shah, Xiuwen Wu, Abid Ullah, Shah Fahad, Riaz Muhammad, Lei Yan, Cuncang Jiang
Boron (B) deficiency and toxicity are the major factors that affect plant growth and yield. The present study revealed the effect of B deficiency and toxicity on plant growth, morphology, physiology, and cell structure. A hydroponic culture experiment was conducted with five B levels, B deficient (B0), sufficient (B20, B10, B40) and toxic (B100). Our results show that both B deficient as well as excess level inhibit plant growth. In B deficiency, the major visible symptoms were appeared in roots, while B excess burned the leaf margin of older leaves...
August 8, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28800532/cell-cycle-arrest-mediated-by-cd-induced-dna-damage-in-arabidopsis-root-tips
#7
Weina Cui, Hetong Wang, Jie Song, Xia Cao, Hilary J Rogers, Dennis Francis, Chunyun Jia, Lizong Sun, Meifang Hou, Yuesuo Yang, Peidong Tai, Wan Liu
Accumulating evidence demonstrates that the aberrant expression of cell cycle regulation and DNA repair genes can result in abnormal cell proliferation and genomic instability in eukaryotic cells under different stresses. Herein, Arabidopsis thaliana (Arabidopsis) seedlings were grown hydroponically on 0.5 × MS media containing cadmium (Cd) at 0-2.5mgL(-1) for 5d of treatment. Real time quantitative reverse transcription-polymerase chain reaction (qRT-PCR) analysis revealed that expression of DNA damage repair and cell cycle regulation genes, including BRCA1, MRE11, WEE1, CDKA;1 and PCNA1, showed an inverted U-shaped dose-response...
August 8, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28800521/potassium-deficiency-alters-growth-photosynthetic-performance-secondary-metabolites-content-and-related-antioxidant-capacity-in-sulla-carnosa-grown-under-moderate-salinity
#8
Chokri Hafsi, Hanen Falleh, Mariem Saada, Riadh Ksouri, Chedly Abdelly
Salinity and K(+) deficiency are two environmental constraints that generally occur simultaneously under field conditions, resulting in severe limitation of plant growth and productivity. The present study aimed at investigating the effects of salinity, either separately applied or in combination with K(+) deficiency, on growth, photosynthetic performance, secondary metabolites content, and related antioxidant capacity in Sulla carnosa. Seedlings were grown hydroponically under sufficient (6000 μM) or low (60 μM) K(+) supply with 100 mM NaCl (C + S and D + S treatments, respectively)...
August 4, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28797073/assessment-of-veterinary-drugs-in-plants-using-pharmacokinetic-approaches-the-absorption-distribution-and-elimination-of-tetracycline-and-sulfamethoxazole-in-ephemeral-vegetables
#9
Hui-Ru Chen, Tirawat Rairat, Shih-Hurng Loh, Yu-Chieh Wu, Thomas W Vickroy, Chi-Chung Chou
The present study was carried out to demonstrate novel use of pharmacokinetic approaches to characterize drug behaviors/movements in the vegetables with implications to food safety. The absorption, distribution, metabolism and most importantly, the elimination of tetracycline (TC) and sulfamethoxazole (SMX) in edible plants Brassica rapa chinensis and Ipomoea aquatica grown hydroponically were demonstrated and studied using non-compartmental pharmacokinetic analysis. The results revealed drug-dependent and vegetable-dependent pharmacokinetic differences and indicated that ephemeral vegetables could have high capacity accumulating antibiotics (up to 160 μg g-1 for TC and 38 μg g-1 for SMX) within hours...
2017: PloS One
https://www.readbyqxmd.com/read/28780450/inhibitory-effects-of-rice-residues-amendment-on-cd-phytoavailability-a-matter-of-cd-organic-matter-interactions
#10
Wenli Tang, Huan Zhong, Lin Xiao, Qiaoguo Tan, Qilong Zeng, Zhongbo Wei
Incorporating crop residues into soils, a most common way of organic input into farmland soils, is being encouraged in many parts of the world, while its potential impacts on Cd phytoavailability are not well understood. Here, a Cd-contaminated soil was amended with rice residues (RR, i.e., straw + root mixture) or not (Control) and incubated for 81 days under laboratory-controlled conditions. During the incubation, key soil parameters (e.g., dissolved organic carbon and pH), Cd geochemical fractionation (by BCR sequential extraction), and CaCl2 extracted Cd in soils (by 0...
July 31, 2017: Chemosphere
https://www.readbyqxmd.com/read/28777815/biochemical-adaptations-of-four-submerged-macrophytes-under-combined-exposure-to-hypoxia-and-hydrogen-sulphide
#11
Mahfuza Parveen, Takashi Asaeda, Md H Rashid
A hydroponic experiment was performed to investigate the stress responses and biochemical adaptations of four submerged macrophytes, Potamogeton crispus, Myriophyllum spicatum, Egeria densa, and Potamogeton oxyphyllus, to the combined exposure of hypoxia and hydrogen sulfide (H2S, provided by NaHS). The investigated plants were subjected to a control, hypoxia, 0.1mM NaHS, 0.5 mM NaHS, 0.1 mM NaHS+hypoxia and 0.5 mM NaHS+hypoxia conditions. All experimental plants grew optimally under control, hypoxic and NaHS conditions in comparison to that grown in the combined exposure of hypoxia and hydrogen sulfide...
2017: PloS One
https://www.readbyqxmd.com/read/28771200/dissecting-tissue-specific-transcriptomic-responses-from-leaf-and-roots-under-salt-stress-in-petunia-hybrida-mitchell
#12
Gonzalo H Villarino, Qiwen Hu, Michael J Scanlon, Lukas Mueller, Aureliano Bombarely, Neil S Mattson
One of the primary objectives of plant biotechnology is to increase resistance to abiotic stresses, such as salinity. Salinity is a major abiotic stress and increasing crop resistant to salt continues to the present day as a major challenge. Salt stress disturbs cellular environment leading to protein misfolding, affecting normal plant growth and causing agricultural losses worldwide. The advent of state-of-the-art technologies such as high throughput mRNA sequencing (RNA-seq) has revolutionized whole-transcriptome analysis by allowing, with high precision, to measure changes in gene expression...
August 3, 2017: Genes
https://www.readbyqxmd.com/read/28767239/zein-nanoparticles-uptake-and-translocation-in-hydroponically-grown-sugarcane-plants
#13
Alisha Prasad, Carlos E Astete, Andreea Elena Bodoki, McKenzie Windham, Ede Bodoki, Cristina M Sabliov
The main objective of this study was to investigate the uptake and translocation of positively charged zein nanoparticles (ZNPs) in hydroponically grown sugarcane plants. Fluorescent ZNPs (spherical and measuring an average diameter 135±3 nm) were synthesized by emulsion-diffusion method from FITC-tagged zein. Fluorescent measurement following digestion of plant tissue indicated that sugarcane roots had a significant adhesion of ZNPs, 342.5±24.2 μg NPs/mg of dry matter, while sugarcane leaves contained a very limited amount, 12...
August 2, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28763635/effect-of-corrosion-inhibitor-benzotriazole-on-the-uptake-and-translocation-of-cd-in-rice-oryza-sativa-l-under-different-exposure-conditions
#14
Zhen Liu, Lei Wang, Chenye Wang, Shujuan Sun, Li Qin, Yi An, Yanshuai Xing, Hongwen Sun
Emerging contaminants that can complex with heavy metals might affect the speciation of coexisting metals and result in different ecological risks. As a widely used metal corrosion inhibitor, 1H-benzotriazole (BTR) is frequently detected in the environments, sometimes at very high levels. In this study, rice (Oryza sativa L.) was used to assess the ecological risk of combined exposure to cadmium (Cd) and BTR in plants and discuss the potential effects of exposure sequence on the uptake and translocation of Cd under hydroponic culture...
July 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/28759768/identification-for-the-capability-of-cd-tolerance-accumulation-and-translocation-of-96-sorghum-genotypes
#15
Weitao Jia, Fangfang Miao, Sulian Lv, Juanjuan Feng, Shufeng Zhou, Xuan Zhang, Duoliya Wang, Shizhong Li, Yinxin Li
Cadmium (Cd) pollution is a worldwide environmental problem which heavily threatens human health and food security. Sorghum, as one of the most promising energy crop, has been considered to be the source of high-quality feedstock for ethanol fuel. Ninety-six sorghum genotypes were investigated under hydroponic conditions to compare their capabilities of Cd-tolerance, accumulation and translocation for their potential in remediation of Cd contamination. Different genotypes varied largely in the tolerance to Cd stress with tolerance indexes ranked from 0...
July 28, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28758909/exogenous-gr24-alleviates-cadmium-toxicity-by-reducing-cadmium-uptake-in-switchgrass-panicum-virgatum-seedlings
#16
Zhenglan Tai, Xinqiang Yin, Zhigang Fang, Gaoling Shi, Laiqing Lou, Qingsheng Cai
Strigolactones (SLs) are classified into plant hormones, playing a key role as a mediator of plant growth in response to several abiotic stresses, including drought and salinity. However, the role of SLs in cadmium (Cd)-induced stress to plants is still unknown. The physiological responses of switchgrass (Panicum virgatum) stressed in 10 μmol L(-1) Cd to exogenous synthetic SLs analog, GR24 were studied in hydroponics. The Cd stress significantly caused the adverse effects on plant growth and root morphology, inhibited photosynthesis, but boosted lipid peroxidation of Switchgrass seedlings...
July 29, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28758125/antihyperglycemic-and-antihyperlipidemic-activity-of-hydroponic-stevia-rebaudiana-aqueous-extract-in-hyperglycemia-induced-by-immobilization-stress-in-rabbits
#17
Anush Aghajanyan, Zaruhi Movsisyan, Armen Trchounian
Diabetes mellitus (DM) is a serious worldwide problem related to human hyperglycemia. Thus, herbal preparations with antihyperglycemic properties especially leaf extracts of hydroponic Stevia rebaudiana (SR) would be useful in hyperglycemia treatment. The antihyperglycemic potential of this medicinal plant grown using hydroponics methods has been evaluated. Significant reduction of some biochemical characteristics for sugars and fatty acids in blood, liver, and muscle especially fasting glucose levels, serum triglycerides, LDL-cholesterol, total cholesterol levels, and increased HDL-cholesterol ones was shown with SR aqueous extract treatment...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28755629/abscisic-acid-treatment-alleviates-cadmium-toxicity-in-purple-flowering-stalk-brassica-campestris-l-ssp-chinensis-var-purpurea-hort-seedlings
#18
Guoming Shen, Jiankang Niu, Zhenxu Deng
The aim of this research was to investigate how exogenous abscisic acid (ABA) alleviates cadmium (Cd) toxicity in purple flowering stalk (Brassica campestris L. ssp. chinensis) and evaluate whether it could be a potential choice for phytoremediation. Purple flowering stalk seedlings were cultivated in a hydroponic system with Cd at various concentrations (0-100 μmol L(-1)) as controls and Cd plus ABA as the treatment in the growth media. The soluble proteins, chlorophyll contents and the activity of the antioxidant enzyme system were determined by previously established biochemical methods...
July 20, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28755583/interaction-of-microorganisms-within-leafy-green-phyllospheres-where-do-human-noroviruses-fit-in
#19
REVIEW
Wenjun Deng, Kristen E Gibson
Human noroviruses (hNoV) are one of the major causes of foodborne disease outbreaks linked to leafy greens. However, the interactions-including attachment and persistence-of hNoV with leafy greens are not well characterized. In the present review, three mechanisms are hypothesized for the interaction of hNoV with leafy green phyllospheres: 1) specific binding to histo-blood group antigen (HBGA)-like carbohydrates exposed on leaf surfaces and present on bacterial microbiota; 2) non-specific binding through electrostatic forces; and 3) internalization of hNoV through contaminated water (e...
July 25, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28744289/identification-of-qtl-associated-with-nitrogen-uptake-and-nitrogen-use-efficiency-using-high-throughput-genotyped-cssls-in-rice-oryza-sativa-l
#20
Yong Zhou, Yajun Tao, Dongnan Tang, Jun Wang, Jun Zhong, Yi Wang, Qiumei Yuan, Xiaofeng Yu, Yan Zhang, Yulong Wang, Guohua Liang, Guichun Dong
Nitrogen (N) availability is a major factor limiting crop growth and development. Identification of quantitative trait loci (QTL) for N uptake (NUP) and N use efficiency (NUE) can provide useful information regarding the genetic basis of these traits and their associated effects on yield production. In this study, a set of high throughput genotyped chromosome segment substitution lines (CSSLs) derived from a cross between recipient 9311 and donor Nipponbare were used to identify QTL for rice NUP and NUE. Using high throughput sequencing, each CSSL were genotyped and an ultra-high-quality physical map was constructed...
2017: Frontiers in Plant Science
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