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https://www.readbyqxmd.com/read/28821602/large-scale-proteomics-combined-with-transgenic-experiments-demonstrates-an-important-role-of-jasmonic-acid-nbsp-in-potassium-nbsp-deficiency-response-in-wheat-and-rice
#1
Gezi Li, Yufang Wu, Guoyu Liu, Xianghong Xiao, Pengfei Wang, Tian Gao, Mengjun Xu, Qiaoxia Han, Yonghua Wang, Tiancai Guo, Guozhang Kang
Potassium (K+) is the most abundant inorganic cation in plants, and molecular dissection of K+ deficiency has received considerable interest in order to minimize K+ fertilizer input and develop high quality K+-efficient crops. However, the molecular mechanism of plant responses to K+ deficiency is still poorly understood. In this study, two-week-old bread wheat seedlings grown hydroponically in Hoagland solution were transferred to K+-free conditions for 8 d, and their root and leaf proteome profiles were assessed using the iTRAQ proteome method...
August 18, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28821187/genetic-dissection-of-seedling-stage-salinity-tolerance-in-rice-using-introgression-lines-of-a-salt-tolerant-landrace-nona-bokra
#2
Venkata Ramana Rao Puram, John Ontoy, Steven Linscombe, Prasanta K Subudhi
Salinity is an important abiotic stress affecting rice production worldwide. Development of salt tolerant varieties is the most feasible approach for improving rice productivity in salt affected soils. In rice, seedling stage salinity tolerance is crucial for better crop establishment. Quantitative trait loci (QTL) mapping using introgression lines (ILs) is useful for identification and simultaneous transfer of desirable alleles into elite genetic background. In the present study, 138 ILs derived from the cross between a high yielding elite salt susceptible japonica rice cultivar Jupiter and a salt tolerant indica landrace Nona Bokra were evaluated for salt tolerance at seedling stage in a hydroponics experiment and were genotyped using 126 simple sequence repeat markers...
September 1, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28818756/interactions-between-aluminium-iron-and-silicon-in-cucumber-sativus-l-grown-under-acidic-conditions
#3
Nikolai P Bityutskii, Kirill L Yakkonen, Anastasiya I Petrova, Alexey L Shavarda
Aluminium (Al) is one of the major stressors for plants in acidic soils, negatively affecting plant growth and nutrient balances. Significant efforts have been undertaken to understand mechanisms of Al tolerance in plants. However, little is known of the relevance of iron (Fe) and silicon (Si) nutrition under Al stress conditions. The objectives of this study were to determine whether effects induced by Fe and Si are of importance for limitation of Al moving via xylem in plants (Cucumis sativus L.). Cucumber plants (cv...
August 4, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28808815/physiological-responses-and-antioxidant-enzyme-changes-in-sulla-coronaria-inoculated-by-cadmium-resistant-bacteria
#4
Manel Chiboub, Salwa Harzalli Jebara, Omar Saadani, Imen Challougui Fatnassi, Souhir Abdelkerim, Moez Jebara
Plant growth promoting bacteria (PGPB) may help to reduce the toxicity of heavy metals on plants growing in polluted soils. In this work, Sulla coronaria inoculated with four Cd resistant bacteria (two Pseudomonas spp. and two Rhizobium sullae) were cultivated in hydroponic conditions treated by Cd; long time treatment 50 µM CdCl2 for 30 days and short time treatment; 100 µM CdCl2 for 7 days. Results showed that inoculation with Cd resistant PGPB enhanced plant biomass, thus shoot and root dry weights of control plants were enhanced by 148 and 35% respectively after 7 days...
August 14, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28806720/exploration-of-acute-genotoxic-effects-and-antigenotoxic-potential-of-gambogic-acid-using-allium-cepa-assay
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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