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https://www.readbyqxmd.com/read/29151145/pendimethalin-induces-oxidative-stress-dna-damage-and-mitochondrial-dysfunction-to-trigger-apoptosis-in-human-lymphocytes-and-rat-bone-marrow-cells
#1
Sabiha M Ansari, Quaiser Saquib, Sabry M Attia, Eslam M Abdel-Salam, Hend A Alwathnani, Mohammad Faisal, Abdulrahman A Alatar, Abdulaziz A Al-Khedhairy, Javed Musarrat
Pendimethalin (PM) is a dinitroaniline herbicide extensively applied against the annual grasses and broad-leaved weeds. There is no report available on PM-induced low-dose genotoxicity in human primary cells and in vivo test models. Such data gap has prompted us to evaluate the genotoxic potential of PM in human lymphocytes and rats. PM selectively binds in the minor groove of DNA by forming covalent bonds with G and C nitrogenous bases, as well as with the ribose sugar. PM induces micronucleus formation (MN) in human lymphocytes, indicating its clastogenic potential...
November 18, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/29151143/salinity-reduces-2-4-d-efficacy-in-echinochloa-crusgalli-by-affecting-redox-balance-nutrient-acquisition-and-hormonal-regulation
#2
Faisal Islam, Yuan Xie, Muhammad A Farooq, Jian Wang, Chong Yang, Rafaqat A Gill, Jinwen Zhu, Weijun Zhou
Distinct salinity levels have been reported to enhance plants tolerance to different types of stresses. The aim of this research is to assess the interaction of saline stress and the use of 2,4-D as a means of controlling the growth of Echinochloa crusgalli. The resultant effect of such interaction is vital for a sustainable approach of weed management and food production. The results showed that 2,4-D alone treatment reduces the chlorophyll contents, photosynthetic capacity, enhanced MDA, electrolyte leakage, and ROS production (H2O2, O2(·-)) and inhibited the activities of ROS scavenging enzymes...
November 18, 2017: Protoplasma
https://www.readbyqxmd.com/read/29149711/enantiomeric-characterization-of-herbicide-lactofen-enantioseparation-absolute-configuration-assignment-and-enantioselective-activity-and-toxicity
#3
Jingqian Xie, Lu Zhao, Kai Liu, Fangjie Guo, Zunwei Chen, Weiping Liu
Chiral herbicides consist of two or more enantiomers, which usually differ in their biological properties and behave enantioselectively in biochemical process. Scant studies have been published in the past decades to characterize the enantiomers of herbicide lactofen. In this study, a laboratory method was developed to prepare the lactofen enantiomers using normal phase high performance liquid chromatography with an AD-H column, and μg level production yield was achieved in a single run. The two separated enantiomers had purity of ≫99%, with their absolute configurations assigned by experimental and calculated electronic and vibrational circular dichroism...
October 31, 2017: Chemosphere
https://www.readbyqxmd.com/read/29149640/change-to-ecosystem-properties-through-changing-the-dominant-species-impact-of-pteridium-aquilinum-control-and-heathland-restoration-treatments-on-selected-soil-properties
#4
G Milligan, K E Booth, E S Cox, R J Pakeman, M G Le Duc, L Connor, S Blackbird, R H Marrs
It is well known that soils are influenced by the plant species that grow in them. Here we consider the effects of management-induced changes to plant communities and their soils during restoration within a 20-year manipulative experiment where the aim was to change a late-successional community dominated by the weed, Pteridium aquilinum, to an earlier-successional grass-heath one. The ecological restoration treatments altered the above- and below-ground components of the community substantially. Untreated plots maintained a dense Pteridium cover with little understory vegetation, cutting treatments produce significant reductions of Pteridium, whereas herbicide (asulam) produced significant immediate reductions in Pteridium but regressed towards the untreated plots within 10 years...
November 14, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29148615/farmers-perspective-on-herbicide-resistant-weeds-and-application-of-resistance-management-strategies-results-from-a-german-survey
#5
Lena Ulber, Dagmar Rissel
BACKGROUND: A herbicide resistance survey was conducted in Germany to determine farmers' awareness of herbicide resistance and experience with resistant weeds, the used information sources on herbicide resistance and methods employed to confirm resistance. In addition, the application pattern and perception of resistance management strategies by farmers were assessed. RESULTS: The majority of farmers (88%) was aware of the presence of herbicide resistance cases in Germany and 64% and 50% of farmers reported that resistant weeds were detected in their county or on their farm, respectively...
November 17, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29148613/ambrosia-artemisiifolia-as-a-potential-resource-for-management-of-golden-apple-snails-pomacea-canaliculata-lamarck
#6
Wenbing Ding, Rui Huang, Zhongshi Zhou, Hualiang He, Youzhi Li
BACKGROUND: Ambrosia artemisiifolia, an invasive weed in Europe and Asia, is highly toxic to the golden apple snail (GAS; Pomacea canaliculata) in laboratory test. However, little is known about the chemical components of A. artemisiifolia associated with the molluscicidal activity or about its potential application for GAS control in rice fields. This study evaluated the molluscicidal activities of powders, methanol extracts, and individual compounds from A. artemisiifolia against GAS in rice fields and under laboratory conditions...
November 17, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29148165/dinitroaniline-herbicide-resistance-in-a-multiple-resistant-lolium-rigidum-population
#7
Jinyi Chen, Qin Yu, Mechelle Owen, Heping Han, Stephen Powles
BACKGROUND: The pre-emergence dinitroaniline herbicides (such as trifluralin and pendimethalin) are vital to Australian no-till farming systems. A Lolium rigidum population collected from the Western Australian grain belt with a 12-year trifluralin use history was characterised for resistance to dinitroaniline, acetyl CoA carboxylase (ACCase)- and acetolactate synthase (ALS)-inhibiting herbicides. Target-site resistance mechanisms were investigated. RESULTS: This L...
November 16, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29147020/integrative-taxonomy-methods-reveal-high-mealybug-hemiptera-pseudococcidae-diversity-in-southern-brazilian-fruit-crops
#8
Vitor C Pacheco da Silva, Mehmet Bora Kaydan, Thibaut Malausa, Jean-François Germain, Ferran Palero, Marcos Botton
The Serra Gaúcha region is the most important temperate fruit-producing area in southern Brazil. Despite mealybugs (Hemiptera: Pseudococcidae) infesting several host plants in the region, there is a lack of information about the composition of species damaging different crops. A survey of mealybug species associated with commercial fruit crops (apple, persimmon, strawberry and grapes) was performed in Serra Gaúcha between 2013 and 2015, using both morphology and DNA analyses for species identification. The most abundant species were Pseudococcus viburni (Signoret), found on all four host plant species, and Dysmicoccus brevipes (Cockerell), infesting persimmon, vines and weeds...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29145472/replacing-methyl-bromide-with-a-combination-of-1-3-dichloropropene-and-metam-sodium-for-cucumber-production-in-china
#9
Liangang Mao, Hongyun Jiang, Lan Zhang, Yanning Zhang, Muhammad Umair Sial, Haitao Yu, Aocheng Cao
The combination of 1,3-dichloropropene (1,3-D) and metam sodium (MNa) is a potential resource to replace methyl bromide (MB) as a soil fumigant. The efficacy of 1,3-D+MNa as a crucial factor to limit soil-borne pests was evaluated in one laboratory experiment and two cucumber greenhouse studies conducted in commercial operations. Laboratory results revealed that 1,3-D and MNa (10+20 mg a.i. kg-1 soil) provided the best complementary control of the root-knot nematode, Fusarium oxysporum and two species of weed seeds...
2017: PloS One
https://www.readbyqxmd.com/read/29140727/population-genomics-of-herbicide-resistance-adaptation-via-evolutionary-rescue
#10
Julia M Kreiner, John R Stinchcombe, Stephen I Wright
The evolution of herbicide resistance in weed populations is a highly replicated example of adaptation surmounting the race against extinction, but the factors determining its rate and nature remain poorly understood. Here, we explore theory and empirical evidence for the importance of population genetic parameters-including effective population size, dominance, mutational target size, and gene flow-in influencing the probability and mode of herbicide resistance adaptation and its variation across species. We compiled data on the number of resistance mutations across populations for 79 herbicide-resistant species...
November 15, 2017: Annual Review of Plant Biology
https://www.readbyqxmd.com/read/29135514/prevalence-and-clinical-characteristics-of-local-allergic-rhinitis-to-house-dust-mites
#11
Yoo Seob Shin, Chang-Gyu Jung, Hae-Sim Park
PURPOSE OF REVIEW: Local allergic rhinitis (LAR) is a recently classified subtype of rhinitis defined by a nasal allergic response in patients without systemic evidence of atopy. Recent studies have reported the prevalence, clinical course, culprit allergens, diagnostic methods and treatment outcomes of LAR. The purpose of this review is to summarize the most relevant and updated scientific evidence for LAR, especially focusing on its prevalence and clinical characteristics. RECENT FINDINGS: LAR is found in a significant proportion (3...
November 14, 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29126636/sustainability-of-agro-livestock-integration-implications-and-results-of-emergy-evaluation
#12
Nicoletta Patrizi, Valentina Niccolucci, Cesare Castellini, Federico M Pulselli, Simone Bastianoni
This study aims to assess the sustainability of an agroforestry system: i.e. a system obtained by the union of two productions to get at least two by-products from the same productive space. In particular, this case study presents the integration of a goose raising system with an organic grape production, from an environmental point of view. This integration is mainly designed to have two simultaneous co-products (grape and goose meat) with: i) a less intensive use of machineries for weeding and ii) avoiding use of chemical fertilizers and weeding...
November 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29124530/fungus-farming-termites-selectively-bury-weedy-fungi-that-smell-different-from-crop-fungi
#13
Lakshya Katariya, Priya B Ramesh, Thejashwini Gopalappa, Sathish Desireddy, Jean-Marie Bessière, Renee M Borges
Mutualistic associations such as the fungal farms of insects are prone to parasitism and are consequently vulnerable to attack by weeds and pests. Therefore, efficient farm management requires quick detection of weeds for their elimination. Furthermore, if the available weedicides are non-specific, then the ability of insects to discriminate between crop and weeds becomes essential for targeted application of such compounds. Here, we demonstrate for the first time in fungus-farming insects, that worker castes of the fungus-growing termite Odontotermes obesus discriminate between their crop (Termitomyces) and the weedy (Pseudoxylaria) fungi, even if exposed to only fungal scents...
November 9, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/29123541/rice-seed-germination-underwater-morpho-physiological-responses-and-the-bases-of-differential-expression-of-alcoholic-fermentation-enzymes
#14
Berta Miro, Toshisangba Longkumer, Frederickson D Entila, Ajay Kohli, Abdelbagi M Ismail
The water-, energy-, and labor-intensive system of transplanted puddled rice (Oryza sativa) is steadily being replaced by direct seeding due to the progressive scarcity of these resources. However, the alternate dry direct seeding leads to competition with weeds and poor establishment when soils are flooded. Direct seeded rice capable of anaerobic germination (germination in flooded soil, AG) is ideal, which under rainfed ecosystems would also overcome waterlogging during germination. AG tolerance is associated with faster germination and faster elongation of coleoptiles, with the activities of alcoholic fermentation enzymes replacing aerobic respiration as a source of energy...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29121711/differences-in-agricultural-activities-related-to-incidence-of-scrub-typhus-between-korea-and-japan
#15
Gyung-Jae Oh, Chang-Jin Ma, Gong-Unn Kang, Jeong-Mi Lee, Da-Un Lee, Hae-Sung Nam, So-Yeon Ryu, Young-Hoon Lee
Objectives: The purpose of this study is to establish a basis for improving or strengthening the preventive strategy against scrub typhus in Korea by comparing and analyzing the difference of prevention behaviors contributing to the occurrence of scrub typhus in both countries. Methods: The survey area selected Jeonbuk province, which is a high risk and high incidence area, and Fukuoka prefecture, which is a high risk and low incidence area. The subjects were 406 in Korea and 216 in Japanese farmers...
November 9, 2017: Epidemiology and Health
https://www.readbyqxmd.com/read/29120827/detection-and-estimation-of-the-increasing-trend-of-cancer-incidence-in-relatively-small-populations
#16
Rina Chen, Enrique Y Bitchatchi
BACKGROUND: Detection and estimation of trends in cancer incidence rates are commonly achieved by fitting standardized rates to a joinpoint log-linear regression. The efficiency of this approach is inadequate when applied to a relatively low levels of incidence. We compared that approach with the Cuscore test with respect to detecting a log-linear increasing trend of chronic myelomonocytic leukemia (CMML) in datasets simulated to match a province of about 700,000 inhabitants. METHODS: For better efficiency, we replaced the standardized rate as the dependent variable with a continuous statistic that reflects the inverse of the standardized incidence ratio (SIR)...
October 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/29120078/high-carbon-dioxide-concentration-and-elevated-temperature-impact-the-growth-of-weeds-but-do-not-change-the-efficacy-of-glyphosate
#17
Khawar Jabran, Mehmed Nedim Doğan
BACKGROUND: Global climate changes may impact the growth and management of weed species. This work was aimed at evaluating the impact of recent climate changes on growth of weeds and herbicide efficacy. The effects of temperature, carbon dioxide (CO2 ), and herbicide on growth and control of Bromus tectorum L., Hordeum murinum L., and Lactuca serriola L. were studied. Treatments included: 1) Control or ambient environment (CO2 =400-450 ppm; temperature 20/10 °C day/night); 2) Elevated temperature (CO2 =400-450 ppm; temperature 25/15 °C day/night); 3) High CO2 and elevated temperature (CO2 =800-900 ppm; temperature 25/15 °C day/night); 4) High CO2 (CO2 =800-900 ppm; temperature 20/10 °C day/night)...
November 9, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29117584/environmental-and-health-effects-of-the-herbicide-glyphosate
#18
REVIEW
A H C Van Bruggen, M M He, K Shin, V Mai, K C Jeong, M R Finckh, J G Morris
The herbicide glyphosate, N-(phosphonomethyl) glycine, has been used extensively in the past 40years, under the assumption that side effects were minimal. However, in recent years, concerns have increased worldwide about the potential wide ranging direct and indirect health effects of the large scale use of glyphosate. In 2015, the World Health Organization reclassified glyphosate as probably carcinogenic to humans. A detailed overview is given of the scientific literature on the movement and residues of glyphosate and its breakdown product aminomethyl phosphonic acid (AMPA) in soil and water, their toxicity to macro- and microorganisms, their effects on microbial compositions and potential indirect effects on plant, animal and human health...
November 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29117229/effects-of-tillage-practice-on-soil-structure-n2o-emissions-and-economics-in-cereal-production-under-current-socio-economic-conditions-in-central-bosnia-and-herzegovina
#19
Ognjen Žurovec, Bishal Kumar Sitaula, Hamid Čustović, Jasminka Žurovec, Peter Dörsch
Conservation tillage is expected to have a positive effect on soil physical properties, soil Carbon (C) storage, while reducing fuel, labour and machinery costs. However, reduced tillage could increase soil nitrous oxide (N2O) emissions and offset the expected gains from increased C sequestration. To date, conservation tillage is barely practiced or studied in Bosnia and Herzegovina (BH). Here, we report a field study on the short-term effects of reduced (RT) and no tillage (NT) on N2O emission dynamics, yield-scaled N2O emissions, soil structure and the economics of cereal production, as compared with conventional tillage (CT)...
2017: PloS One
https://www.readbyqxmd.com/read/29116554/recent-advances-in-molecular-basis-for-strigolactone-action
#20
REVIEW
Ruifeng Yao, Jiayang Li, Daoxin Xie
Strigolactones (SLs) are a very special class of plant hormones, which act as endogenous signals to regulate shoot branching in plants, and also serve as rhizosphere signals to regulate interactions of host plants with heterologous organisms such as symbiotic arbuscular mycorrhizal fungi and parasitic weeds. In this short review, we give a brief description of novel discoveries in SL biosynthesis pathway, and mainly summarize the recent advances in SL perception and signal transduction.
November 6, 2017: Science China. Life Sciences
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