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https://www.readbyqxmd.com/read/29163616/co-expression-of-arabidopsis-nhx1-and-bar-improves-the-tolerance-to-salinity-oxidative-stress-and-herbicide-in-transgenic-mungbean
#1
Sanjeev Kumar, Angkana Kalita, Richa Srivastava, Lingaraj Sahoo
Mungbean is an important pulse crop extensively cultivated in Southeast Asia for supply of easily digestible protein. Salinity severely limits the growth and productivity of mungbean, and weeding poses nutritional and disease constraints to mungbean cultivation. To pyramid both salt tolerance and protection against herbicide in mungbean, the AtNHX1 encoding tonoplast Na(+)/H(+) antiporter from Arabidopsis, and bar gene associated with herbicide resistance were co-expressed through Agrobacterium-mediated transformation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29157222/comparative-proteomics-reveals-the-physiological-differences-between-winter-tender-shoots-and-spring-tender-shoots-of-a-novel-tea-camellia-sinensis-l-cultivar-evergrowing-in-winter
#2
Shengjie Liu, Jiadong Gao, Zhongjian Chen, Xiaoyan Qiao, Hualin Huang, Baiyuan Cui, Qingfeng Zhu, Zhangyan Dai, Hualing Wu, Yayan Pan, Chengwei Yang, Jun Liu
BACKGROUND: A recently discovered tea [Camellia sinensis (L.) O. Kuntze] cultivar can generate tender shoots in winter. We performed comparative proteomics to analyze the differentially accumulated proteins between winter and spring tender shoots of this clonal cultivar to reveal the physiological basis of its evergrowing character during winter. RESULTS: We extracted proteins from the winter and spring tender shoots (newly formed two leaves and a bud) of the evergrowing tea cultivar "Dongcha11" respectively...
November 20, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29157202/target-proteins-reprogrammed-by-as-and-as%C3%A2-%C3%A2-si-treatments-in-solanum-lycopersicum-l-fruit
#3
Marta Marmiroli, Francesca Mussi, Davide Imperiale, Nelson Marmiroli
BACKGROUND: Arsenic is an important contaminant of many arable soils worldwide, while silicon, one of the most abundant elements in the earth's crust, interacts with As in the context of plant metabolism. As toxicity results largely from its stimulation of reactive oxygen species, and it is believed that Si can mitigate this process through reduction of the level of oxidative stress. Experiments targeting the proteomic impact of exposure to As and Si have to date largely focused on analyses of root, shoot and seed of a range of mainly non-solanaceous species, thus it remains unclear whether oxidative stress is the most important manifestation of As toxicity in Solanum lycopersicum fruit which during ripening go through drastic physiological and molecular readjustments...
November 21, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29149646/dependence-of-growth-inhibiting-action-of-increased-planting-density-on-capacity-of-lettuce-plants-to-synthesize-aba
#4
Lidiya B Vysotskaya, Tatyana N Arkhipova, Guzel R Kudoyarova, Stanislav Yu Veselov
Inhibition of lettuce plant growth under increased planting density was accompanied by accumulation of abscisic acid (ABA) in the shoots of competing plants. To check causal relationship between these responses we studied the effect of decreased synthesis of ABA on growth indexes and hormonal balance of lettuce plants under elevated density of their planting (one (single) or three (competing) plants per pot). Herbicide fluridone was used to inhibit ABA synthesis. Preliminary experiments with single plants showed that presence of fluridone in the soil solution at rather low concentration (0...
November 11, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29147985/deciphering-the-growth-organic-acid-exudations-and-ionic-homeostasis-of-amaranthus-viridis-l-and-portulaca-oleracea-l-under-lead-chloride-stress
#5
Muhammad Tariq Javed, Muhammad Sohail Akram, Noman Habib, Kashif Tanwir, Qasim Ali, Nabeel Khan Niazi, Huma Gul, Naeem Iqbal
Lead (Pb) stress adversely affects in planta nutrient homeostasis and metabolism when present at elevated concentration in the surrounding media. The present study was aimed at investigation of organic acid exudations, elemental contents, growth, and lipid peroxidation in two wild plants (Amaranthus viridis L. and Portulaca oleracea L.), exhibiting differential root to shoot Pb translocation, under Pb stress. Plants were placed in soil spiked with lead chloride (PbCl2) concentrations of 0, 15, 30, 45, or 60 mg Pb/kg soil, in rhizoboxes supplied with nylon nets around the roots...
November 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29136411/shoot-apical-meristem-and-plant-body-organization-a-cross-species-comparative-study
#6
Renáta Schnablová, Tomáš Herben, Jitka Klimešová
Background and Aims: The shoot apical meristem (SAM) is the key organizing element in the plant body and is responsible for the core of plant body organization and shape. Surprisingly, there are almost no comparative data that would show links between parameters of the SAM and whole-plant traits as drivers of the plant's response to the environment. Methods: Interspecific differences in SAM anatomy were examined in 104 perennial herbaceous angiosperms. Key Results: There were differences in SAM parameters among individual species, their phylogenetic patterns, and how their variation is linked to variation in plant above-ground organs and hence species' environmental niches...
November 10, 2017: Annals of Botany
https://www.readbyqxmd.com/read/29134073/why-did-the-pheasant-cross-the-road-long-term-road-mortality-patterns-in-relation-to-management-changes
#7
Joah R Madden, Sarah E Perkins
Pheasants (Phasianus colchicus) are commonly killed on UK roads, presenting a threat to motorists and a loss to the game shooting industry. Pheasants may be inherently susceptible, or the recent increase in their artificial rearing and release may have exacerbated the situation, either through population increases or because artificial rearing has altered movement behaviour. We compared intra-annual patterns of roadkill reported in the UK from the 1960s (prior to the onset of mass release programmes) with that from the 2010s (when pheasant release was well established and widespread), considering roadkill sex and locations and accounting for changes in traffic levels...
October 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29128776/facilitation-of-amphibious-habit-by-physiological-integration-in-the-clonal-perennial-climbing-herb-ipomoea-aquatica
#8
Hui-Feng Lin, Peter Alpert, Qian Zhang, Fei-Hai Yu
Physiological integration of connected ramets of clonal plants can increase clonal performance when ramets grow in contrasting microenvironments within a habitat. In amphibious clonal species, integration of ramets in different habitats, terrestrial and aquatic, is possible. This may increase performance of amphibious clones, especially under eutrophic conditions. To test this, clonal fragments consisting of two ramets of the amphibious, perennial, climbing herb Ipomoea aquatica connected by a stem were placed such that the proximal ramet was rooted in a simulated riparian community of four other species, while the distal ramet extended into a simulated aquatic habitat with open water and sediment...
November 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29127920/uptake-and-phytotoxic-effect-of-benzalkonium-chlorides-in-lepidium-sativum-and-lactuca-sativa
#9
Adnan Hossain Khan, Mark Libby, Daniel Winnick, John Palmer, Mark Sumarah, Madhumita B Ray, Sheila M Macfie
Cationic surfactants such as benzalkonium chlorides (BACs) are used extensively as biocides in hospitals, food processing industries, and personal care products. BACs have the potential to reach the rooting zone of crop plants and BACs might thereby enter the food chain. The two most commonly used BACs, benzyl dimethyl dodecyl ammonium chloride (BDDA) and benzyl dimethyl tetradecyl ammonium chloride (BDTA), were tested in a hydroponic system to assess the uptake by and phytotoxicity to lettuce (Lactuca sativa L...
November 8, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29121271/genome-wide-identification-of-arabidopsis-lbd29-target-genes-reveals-the-molecular-events-behind-auxin-induced-cell-reprograming-during-callus-formation
#10
Chongyi Xu, Huifen Cao, Enjun Xu, Shiqi Zhang, Yuxin Hu
Auxin-induced callus formation represents an important cell reprograming process during in vitro regeneration of plants, in which the pericycle or pericycle-like cells within plant organs are reprogramed into the pluripotent cell mass termed callus that is generally required for subsequent regeneration of root or shoot. However, the molecular events behind cell reprograming during auxin-induced callus formation are largely elusive. We previously identified that auxin-induced LBD transcription factors act as the master regulators to trigger auxin-induced callus formation...
November 7, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29120779/9-10-anthraquinone-deposit-in-tea-plantation-might-be-one-of-the-reasons-for-contamination-in-tea
#11
Xuan Wang, Li Zhou, Fengjian Luo, Xinzhong Zhang, Hezhi Sun, Mei Yang, Zhengyun Lou, Zongmao Chen
9,10-Anthraquinone (AQ) was a new contaminant, with unknown sources, occurred globally in tea. European Union (EU) fixed the maximum residue limit (MRL) of 0.02mg/kg. The pollution source of AQ in tea was traced from the view of AQ deposit on tea crop by simulation. The possible contamination pathway and main factors to decrease AQ were explored in tea cultivation- tea manufacture- tea infusion, on the basis of AQ analytical methods by using solvent extraction and gas chromatography-tandem mass spectrometry (GC-MS/MS) quantification...
April 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29118249/reduction-in-root-secondary-growth-as-a-strategy-for-phosphorus-acquisition
#12
Christopher F Strock, Laurie Morrow de la Riva, Jonathan Lynch
We tested the hypothesis that reduced root secondary growth of dicotyledonous species improves phosphorus acquisition. Functional-structural modeling in SimRoot indicates that in common bean (Phaseolus vulgaris), reduced root secondary growth reduces root metabolic costs, increases root length, improves phosphorus capture, and increases shoot biomass in low phosphorus soil. Observations from the field and greenhouse confirm that under phosphorus stress, resource allocation is shifted from secondary to primary root growth, genetic variation exists for this response, and reduced secondary growth improves phosphorus capture from low phosphorus soil...
November 8, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29112129/enhanced-agronomic-traits-and-medicinal-constituents-of-autotetraploids-in-anoectochilus-formosanus-hayata-a-top-grade-medicinal-orchid
#13
Hsiao-Hang Chung, Shu-Kai Shi, Bin Huang, Jen-Tsung Chen
This study developed an efficient and reliable system for inducing polyploidy in Anoectochilus formosanus Hayata, a top-grade medicinal orchid. The resulting tetraploid gave a significant enhancement on various agronomic traits, including dry weight, fresh weight, shoot length, root length, leaf width, the size of stoma, and number of chloroplasts per stoma. A reduction of the ratio of length to width was observed in stomata and leaves of the tetraploid, and consequently, an alteration of organ shape was found...
November 7, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29084416/analysis-for-higenamine-in-urine-by-means-of-uhplc-ms-ms-interpretation-of-results
#14
Krzysztof Grucza, Dorota Kwiatkowska, Katarzyna Kowalczyk, Mariola Wicka, Mirosław Szutowski, Piotr Chołbiński
Higenamine (Norcoclaurine) is a very popular substance in Chinese medicine and it is present in many plants. Moreover, the substance may be found in supplements or nutrients consumption of which may result in violation of anti-doping rules. Higenamine is prohibited in sport at all times and included in class S3 (β-2-agonists) of the World Anti-Doping Agency (WADA) "2017 Prohibited List". Presence of higenamine in urine samples at concentration greater than or equal to 10 ng/mL constitutes an adverse analytical finding (AAF)...
October 30, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/29080266/elevated-co2-levels-enhance-the-uptake-and-metabolism-of-organic-nitrogen
#15
Qingxu Ma, Jun Wang, Yan Sun, Xin Yang, Jinzhao Ma, Tingqiang Li, Lianghuan Wu
The effects of elevated CO2 (eCO2 ) on the relative uptake of inorganic and organic nitrogen (N) are unclear. The uptake of different N sources by pakchoi (Brassica chinensis L.) seedlings supplied with a mixture of nitrate, glycine, and ammonium was studied using (15) N-labelling under ambient CO2 (aCO2 ) (350 ppm) or eCO2 (650 ppm) conditions. (15) N-labelled short-term uptake and (15) N-gas chromatography mass spectrometry (GC-MS) were applied to measure the effects of eCO2 on glycine uptake and metabolism...
October 28, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/29075270/differential-phytotoxic-impact-of-plant-mediated-silver-nanoparticles-agnps-and-silver-nitrate-agno3-on-brassica-sp
#16
Kanchan Vishwakarma, Shweta, Neha Upadhyay, Jaspreet Singh, Shiliang Liu, Vijay P Singh, Sheo M Prasad, Devendra K Chauhan, Durgesh K Tripathi, Shivesh Sharma
Continuous formation and utilization of nanoparticles (NPs) have resulted into significant discharge of nanosized particles into the environment. NPs find applications in numerous products and agriculture sector, and gaining importance in recent years. In the present study, silver nanoparticles (AgNPs) were biosynthesized from silver nitrate (AgNO3) by green synthesis approach using Aloe vera extract. Mustard (Brassica sp.) seedlings were grown hydroponically and toxicity of both AgNP and AgNO3 (as ionic Ag(+)) was assessed at various concentrations (1 and 3 mM) by analyzing shoot and root length, fresh mass, protein content, photosynthetic pigments and performance, cell viability, oxidative damage, DNA degradation and enzyme activities...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29062834/micropropagation-and-subsequent-enrichment-of-carotenoids-fatty-acids-and-tocopherol-contents-in-sedum-dasyphyllum-l
#17
Han Yong Park, Ramesh Kumar Saini, Judy Gopal, Young-Soo Keum, Doo Hwan Kim, Onew Lee, Iyyakkannu Sivanesan
A promising micropropagation protocol has been systematically established and demonstrated for the enhanced production of carotenoids, tocopherol and fatty acids in shoot tissues of Sedum dasyphyllum. Shoot tip explants were grown on Murashige and Skoog (MS) medium. Different concentrations of N(6)-benzyladenine (BA) or thidiazuron (TDZ) alone or in combination with α-naphthaleneacetic acid (NAA) were tested in order to stimulate multiple shoot production. Ideal shoot induction (100%) and maximized shoot numbers (36...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/29042373/emotional-reactions-in-parents-of-the-youth-who-experienced-the-ut%C3%A3-ya-shooting-on-22-july-2011-results-from-a-cohort-study
#18
Tonje Holt, Tine Jensen, Grete Dyb, Tore Wentzel-Larsen
OBJECTIVE AND SETTING: The objective of this study was to provide knowledge about the emotional reactions in parents whose offspring experienced a mass shooting on Utøya island in Norway in 2011. The research questions included whether parents' reactions were influenced by their offspring's symptom level, age, living situation and parental gender. DESIGN: The study was designed as an open cohort study. The data were collected at two time points; 4-5 months and 14-15 months after the shooting...
October 16, 2017: BMJ Open
https://www.readbyqxmd.com/read/29037666/multi-class-analysis-for-simultaneous-determination-of-pesticides-mycotoxins-process-induced-toxicants-and-packaging-contaminants-in-tea
#19
Mathieu Cladière, Grégoire Delaporte, Even Le Roux, Valérie Camel
This study attempts at uniting the analysis of four different classes of contaminants for both liquid and solid tea samples. A total of 32 compounds, classified as pesticides, mycotoxins, process-induced toxicants or packaging contaminants, were carefully chosen for their diversity of structures and physicochemical properties. The proposed method combines a sample treatment strategy coming from metabolomics with liquid chromatography analysis using a silica bonded C18-pentafluorophenyl column coupled to high resolution mass spectrometry...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29037151/lipidomics-analysis-unravels-the-effect-of-nitrogen-fertilization-on-lipid-metabolism-in-tea-plant-camellia-sinensis-l
#20
Mei-Ya Liu, Asdrubal Burgos, Lifeng Ma, Qunfeng Zhang, Dandan Tang, Jianyun Ruan
BACKGROUND: Nitrogen (N) plays an important role in the formation of tea quality-related compounds, like amino acids and flavor/aroma origin compounds. Lipids, which have been reported to be affected by N deficiency, are precursors to the generation of flavor/aroma origin compounds in tea plant. However, there is no literature about the lipid profiles of tea plant affected by N fertilization. Hence, we hypothesize that the biosynthesis of flavor-related compounds in tea was affected by N through its regulation of lipid metabolism...
October 16, 2017: BMC Plant Biology
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