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https://www.readbyqxmd.com/read/29785001/evaluation-of-weed-control-efficacy-and-crop-safety-of-the-new-hppd-inhibiting-herbicide-qyr301
#1
Hengzhi Wang, Weitang Liu, Kongping Zhao, Hui Yu, Jia Zhang, Jinxin Wang
QYR301, 1,3-Dimethyl-1H-pyrazole-4-carboxylic acid 4-[2-chloro-3-(3,5-dimethyl-pyrazol-1-ylmethyl)-4-methanesulfonyl-benzoyl]-2,5-dimethyl-2H-pyrazol-3-yl ester, is a novel HPPD-inhibiting herbicide and was evaluated to provide a reference for post-emergence (POST) application under greenhouse and field conditions. The crop safety (180 and 360 g active ingredient (a.i.) ha-1 treatments) experiment revealed that wheat, paddy, garlic and corn were the only four crops without injury at both examined herbicide rates...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29783231/allergenic-weed-pollen-forecast-under-the-mathematical-modeling-method-implementation-in-ukraine
#2
Irina I Motruk, Michael Yu Antomonov, Victoria V Rodinkova, Olena E Aleksandrova, Oleh V Yermishev
OBJECTIVE: Introduction: Allergies are the most common reason of the chronic diseases in developed countries and represent an important medical, social and economic issue, the relevance of which is growing both in these countries and in Ukraine. The most famous of these allergens group is the pollen of ambrosia and pollen of poaceae, which are ubiquitously distributed in the subtropical and temperate climate. The aim: The objective of our study was to develop the mathematical models, which will be able to indicate the probability of the pollen circulation, and thus these models can simplify the forecast of symptoms risk and improve the prophylaxis of pollinosis...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29783169/applying-multi-criteria-analysis-for-preliminary-assessment-of-the-properties-of-alginate-immobilized-myriophyllum-spicatum-in-lake-water-samples
#3
Jelena V Milojković, Jelena B Popović-Djordjević, Lato L Pezo, Ilija D Brčeski, Aleksandar Ž Kostić, Vladan D Milošević, Mirjana D Stojanović
The preliminary assessment of the properties of alginate immobilized aquatic weed Myriophyllum spicatum beads-MsAlg in a multi-element system of nine Serbian lakes water samples was done. Herein, the results obtained in the biosorption experiment with MsAlg contents of twenty-two elements analysed by inductively coupled plasma-optical emission spectrometry, biosorption capacity, element removal efficiency, total hardness (TH) and quality index of water (WQI) are presented. Scanning electron microscopy with energy dispersive X-ray spectroscopy was used for the characterization of M...
May 11, 2018: Water Research
https://www.readbyqxmd.com/read/29781307/anti-pseudomonas-aeruginosa-activity-of-hemlock-conium-maculatum-apiaceae-essential-oil
#4
Michela Di Napoli, Mario Varcamonti, Adriana Basile, Maurizio Bruno, Filippo Maggi, Anna Zanfardino
Conium maculatum is a nitrophilous weed belonging to the Apiaceae family and occurring in hedgerows, pastures, waste ground, along rivers and roadsides. Little is known on the chemistry and bioactivity of other secondary metabolites occurring in the plant. In the present work, we have analysed the chemical composition and antimicrobial activity of the essential oils hydrodistilled from leaves and inflorescenes of C. maculatum growing in Sicily, Italy. The composition of essential oils was achieved by gas chromatography-mass spectrometry (GC-MS) analysis, whereas the inhibitory effects on the growth of two Gram negative strains, namely Escherichia coli and Pseudomonas aeruginosa were assessed by two different analysis...
May 21, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29777486/physiological-and-quantitative-proteomic-analyses-unraveling-potassium-deficiency-stress-response-in-alligator-weed-alternanthera-philoxeroides-l-root
#5
Li-Qin Li, Lun Liu, Wei Zhuo, Qian Chen, Sheng Hu, Shuang Peng, Xi-Yao Wang, Yi-Fei Lu, Li-Ming Lu
Physiological and iTRAQ based proteomic analysis provided new insights into potassium deficiency stress response in alligator weed root. Alligator weed (Alternanthera philoxeroides) has a strong ability to adapt to potassium deficiency (LK) stress. Proteomic changes in response to this stress are largely unknown in alligator weed. In this study, we investigated physiological and molecular mechanisms under LK using isobaric tags for relative and absolute quantitation to characterize proteome-level changes in this plant...
May 18, 2018: Plant Molecular Biology
https://www.readbyqxmd.com/read/29773742/wicked-evolution-can-we-address-the-sociobiological-dilemma-of-pesticide-resistance
#6
REVIEW
Fred Gould, Zachary S Brown, Jennifer Kuzma
Resistance to insecticides and herbicides has cost billions of U.S. dollars in the agricultural sector and could result in millions of lives lost to insect-vectored diseases. We mostly continue to use pesticides as if resistance is a temporary issue that will be addressed by commercialization of new pesticides with novel modes of action. However, current evidence suggests that insect and weed evolution may outstrip our ability to replace outmoded chemicals and other control mechanisms. To avoid this outcome, we must address the mix of ecological, genetic, economic, and sociopolitical factors that prevent implementation of sustainable pest management practices...
May 18, 2018: Science
https://www.readbyqxmd.com/read/29772666/weed-growth-stage-estimator-using-deep-convolutional-neural-networks
#7
Nima Teimouri, Mads Dyrmann, Per Rydahl Nielsen, Solvejg Kopp Mathiassen, Gayle J Somerville, Rasmus Nyholm Jørgensen
This study outlines a new method of automatically estimating weed species and growth stages (from cotyledon until eight leaves are visible) of in situ images covering 18 weed species or families. Images of weeds growing within a variety of crops were gathered across variable environmental conditions with regards to soil types, resolution and light settings. Then, 9649 of these images were used for training the computer, which automatically divided the weeds into nine growth classes. The performance of this proposed convolutional neural network approach was evaluated on a further set of 2516 images, which also varied in term of crop, soil type, image resolution and light conditions...
May 16, 2018: Sensors
https://www.readbyqxmd.com/read/29771292/separation-of-four-flavonol-glycosides-from-solanum-rostratum-dunal-using-solvent-sublation-followed-by-hsccc-and-low-column-temperature-preparative-hplc
#8
Qian Shao, Lin Chang, Zhenya Wei, Yun Wei
Hyperoside, 3'-O-methylquercetin 3-O-β-D-galactopyranoside, astragalin and 3'-O-methylquercetin 3-O-β-D-glucopyranoside from an invasive weed Solanum rostratum Dunal were separated and purified successfully by high-speed counter-current chromatography (HSCCC) with a solvent system composed of n-hexane-ethyl acetate-methanol-water (1:7:1:7, v/v) and gradient elution mode preparative high-performance liquid chromatography (prep-HPLC) with low column temperature. In the sample pretreatment section, target compounds in aqueous extract of the weed were concentrated using solvent sublation...
May 16, 2018: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/29770582/predator-performance-inferring-predator-switching-behaviors-based-on-nutritional-indices-in-a-coccinellid-psylla-aphid-system
#9
M Amin Jalali, M Reza Mehrnejad, Peter C Ellsworth, Fateme Ranjbar, Mahdi Ziaaddini
BACKGROUND: Knowledge on the nutritional ecology of predatory coccinellids is important to selection of efficient biocontrol agents. We examined five species common to pistachio orchards and nutritional indices when fed on the key psylla pest of the system, Agonoscena pistaciae, in contrast to an alternative prey common on herbaceous plants in orchards, Aphis gossypii. RESULTS: Feeding studies revealed that Oenopia conglobata contaminata and Adalia bipunctata may be more efficient as biocontrol agents for A...
May 16, 2018: Pest Management Science
https://www.readbyqxmd.com/read/29758499/interference-of-three-herbicides-on-iron-acquisition-in-maize-plants
#10
Maria Luce Bartucca, Alessandro Di Michele, Daniele Del Buono
The use of herbicides to control weed species could lead to environmental threats due to their persistence and accumulation in the ecosystems and cultivated fields. Nonetheless, the effect of these compounds on plant mineral nutrition in crops has been barely investigated. This study aimed at ascertaining the effect of three herbicides (S-metolachlor, metribuzin and terbuthylazine) on the capacity of maize to acquire iron (Fe). Interferences on plant growth and reductions on the Fe contents were found in the plants treated...
May 7, 2018: Chemosphere
https://www.readbyqxmd.com/read/29757585/ige-sensitization-to-inhalant-allergens-and-its-association-with-allergic-diseases-in-adults
#11
Raheleh Shokouhi Shoormasti, Mohammad Reza Fazlollahi, Anoshirvan Kazemnejad, Behnoosh Tayebi, Fatemeh Nadali, Maryam Sharif Shoushtari, Shamim Khandan Alamdari, Majid Moslemi, Masoud Movehdi, Adriano Mari, Zahra Pourpak, Mostafa Moin
Allergic sensitization to inhalant allergens could be considered as a predictor in allergic diseases. The objective of this study was to assess IgE-mediated sensitization to inhalant allergens in allergic and non-allergic adults as well as the evaluation of its association with allergic diseases. This cross-sectional study was conducted from 2013 to 2016 in 604 allergic and 102 non-allergic adults selected from blood donor volunteers in Tehran, Iran. After taking informed consent, a standard questionnaire was filled to determine asthma, allergic rhinitis and/or conjunctivitis and atopic dermatitis in participants...
April 2018: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29754487/aqueous-photolysis-of-benzobicyclon-hydrolysate
#12
Katryn L Williams, Richie Kaur, Alexander S McFall, Jacob Kalbfleisch, Joshua Gladfelder, David B Ball, Cort Anastasio, Ronald S Tjeerdema
Benzobicyclon (3-(2-chloro-4-(methylsulfonyl)benzoyl)-2-phenylthiobicyclo[3.2.1]oct-2-en-4-one) is a pro-herbicide used against resistant weeds in California rice fields. Persistence of its active product, benzobicyclon hydrolysate, is of concern. An acidic herbicide, the neutral species photolyzed faster than the more predominant anionic species (t1/2 = 1 h and 320 h, respectively; natural sunlight), from a >10-fold difference in quantum yield. Dissolved organic matter in natural waters reduced direct photolysis and increased indirect photolysis compared to high-purity water...
May 12, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29752317/getting-into-the-weeds
#13
Margaret Tempero
No abstract text is available yet for this article.
May 2018: Journal of the National Comprehensive Cancer Network: JNCCN
https://www.readbyqxmd.com/read/29748910/does-the-increase-in-ambient-co-2-concentration-elevate-allergy-risks-posed-by-oak-pollen
#14
Kyu Rang Kim, Jae-Won Oh, Su-Young Woo, Yun Am Seo, Young-Jin Choi, Hyun Seok Kim, Wi Young Lee, Baek-Jo Kim
Oak pollen is a major respiratory allergen in Korea, and the distribution of oak trees is expected to increase by ecological succession and climate change. One of the drivers of climate change is increasing CO2 , which is also known to amplify the allergy risk of weed pollen by inducing elevated allergenic protein content. However, the impact of CO2 concentration on tree pollen is not clearly understood due to the experimental difficulties in carrying out extended CO2 treatment. To study the response of pollen production of sawtooth oak trees (Quercus acutissima) to elevated levels of ambient CO2 , three open-top chambers at the National Institute of Forest Science in Suwon, Korea were utilized with daytime (8 am-6 pm) CO2 concentrations of ambient (× 1...
May 10, 2018: International Journal of Biometeorology
https://www.readbyqxmd.com/read/29748859/physiological-and-cell-ultrastructure-disturbances-in-wheat-seedlings-generated-by-chenopodium-murale-hairy-root-exudate
#15
Nevena Mitić, Mariana Stanišić, Jelena Savić, Tatjana Ćosić, Nemanja Stanisavljević, Jovanka Miljuš-Đukić, Marija Marin, Svetlana Radović, Slavica Ninković
Chenopodium murale L. is an invasive weed species significantly interfering with wheat crop. However, the complete nature of its allelopathic influence on crops is not yet fully understood. In the present study, the focus is made on establishing the relation between plant morphophysiological changes and oxidative stress, induced by allelopathic extract. Phytotoxic medium of C. murale hairy root clone R5 reduced the germination rate (24% less than control value) of wheat cv. Nataša seeds, as well as seedling growth, diminishing shoot and root length significantly, decreased total chlorophyll content, and induced abnormal root gravitropism...
May 10, 2018: Protoplasma
https://www.readbyqxmd.com/read/29745188/-effects-of-invasive-cenchrus-spinifex-on-nitrogen-pools-in-sandy-grassland
#16
Ting Zhang, Wei Dong Fu, Rui Hai Zhang, Zhen Song, Chao Bai, Cheng Cheng Huang, Guo Liang Zhang
Cenchrus spinifex is an invasive plant found in large areas of northern China. In this study, we focused on analysis of the effects of C. spinifex on soil nitrogen and plant nitrogen pools in Horqin sandy grassland. In addition, a pot experiment with 15 N tracing techniques was designed to study the biological nitrogen fixation ability of C. spinifex, compared with two native grasses, Elymus dahuricus and Agropyron cristatum. The total soil nitrogen pool in C. spinifex invaded-area increased significantly by 47...
May 18, 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29744588/molecular-characterization-of-a-new-begomovirus-infecting-synedrella-nodiflora-in-south-india
#17
Soumita Das, Akshay Hegde, P V Shivaprasad
Begomoviruses (family Geminiviridae) cause important diseases in many crops. In addition, many wild plants are reservoirs of begomoviruses, which are a potential menace for nearby crops. A novel begomovirus was isolated from a weed of the species Synedrella nodiflora (Compositae) exhibiting yellow vein symptoms in South India. This virus had a typical monopartite Old World begomovirus genome and was accompanied by a betasatellite. Sequence comparison revealed that this virus represents a new species in the genus Begomovirus...
May 9, 2018: Archives of Virology
https://www.readbyqxmd.com/read/29741710/response-to-short-term-cold-storage-for-eggs-of-agasicles-hygrophila-coleoptera-chrysomelidae-a-biological-control-agent-of-alligator-weed-alternanthera-philoxeroides-caryophyllales-amaranthaceae
#18
Yan-Hong Liu, Dong Jia, Xiao-Fang Yuan, Yuan-Xin Wang, Hsin Chi, Thomas James Ridsdill-Smith, Rui-Yan Ma
The alligator weed flea beetle, Agasicles hygrophila Selman & Vogt (Coleoptera: Chrysomelidae) has been used very successfully for the biological control of the widely-distributed invasive weed Alternanthera philoxeroides (Mart.) Griseb (Caryophyllales: Amaranthaceae). In order to extend the 'shelf life' of natural enemies released in biological control programs, cold storage has proven to be a valuable commercial procedure. To determine a suitable low temperature for storage of A. hygrophila, we conducted short-term cold storage treatments of eggs (4°C for 0...
May 8, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29740453/deoxyribonucleic-acid-methylation-in-systemic-lupus-erythematosus-implications-for-future-clinical-practice
#19
REVIEW
Emma Weeding, Amr H Sawalha
Differential deoxyribonucleic acid (DNA) methylation has emerged as a critical feature of systemic lupus erythematosus (SLE). Genome-wide DNA methylation studies have revealed methylation patterns characteristic of SLE-in particular, robust hypomethylation of interferon-regulated genes is a prominent finding in all cells of the immune system studied to date. These patterns reliably distinguish individuals with SLE from healthy controls and from individuals with other autoimmune diseases. For example, hypomethylation within IFI44L is both highly sensitive and highly specific for SLE, superior to currently available biomarkers...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29738464/allelopathic-responses-of-rice-seedlings-under-some-different-stresses
#20
Tran Dang Khanh, La Hoang Anh, La Tuan Nghia, Khuat Huu Trung, Pham Bich Hien, Do Minh Trung, Tran Dang Xuan
The objective of this study was to evaluate the allelopathic responses of rice seedlings under submergence stress at different temperatures (10, 25, 32, and 37 °C). The results showed that a wide range of allelopathic responses of rice seedlings depended on varieties and stress conditions, with temperature was being a key factor. It showed that the extracts of rice seedlings induced significant suppression on lettuce and radish seedling germination, but had negligible allelopathic effects on growth of barnyardgrass, whilst the emergence and growth of natural weeds was stimulated...
May 8, 2018: Plants (Basel, Switzerland)
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