PROSPECTS FOR USING PSEUDOMONAS ZHAODONGENSIS TO MITIGATE HERBICIDAL STRESS IN WHEAT

2021 ◽  
Vol 0 (4) ◽  
pp. 57-62
Author(s):  
A.A. KENDZHIEVA ◽  
◽  
D.V. CHETVERIKOVA ◽  
M.D. BAKAEVA ◽  
S.P. CHETVERIKOV ◽  
...  
Keyword(s):  
Bacterial Culture ◽  
Negative Impact ◽  
Nitrogenase Activity ◽  
Yield Potential ◽  
Wheat Roots ◽  
Herbicide Resistant ◽  
Republic Of Bashkortostan ◽  
16S Rna ◽  
Wheat Leaves ◽  
Higher Doses

The proliferation of herbicide-resistant forms of weeds provokes herbicide application in higher doses. It may have a negative impact on agricultural crops, causing oxidative stress, inhibiting the growth of plants, reducing yield potential. An important task is to find methods to mitigate herbicidal stress in crops. One approach may be to treat crops with microorganisms that favorably affect the growth of plants. Under the conditions of the light site, two-week wheat plants were sprayed with herbicides Octapon estra (0.1 µl/plant) based on 2,4-D and Nanomet (1.3 µg/plant) based on metsulfuron-methyl and a culture of bacteria 12N1 (107 CFU/plant). Herbicide-resistant strain 12N1, previously isolated from soil from the territory of a chemical industry enterprise (Republic of Bashkortostan, Russia), showed nitrogenase activity of 10.1 nmol C2H4•h-1•ml-1.The use of bacteria stimulated the growth of wheat roots both in the variants of the experiment with and without herbicides. Treatment with bacterial culture reduced the proline content in wheat leaves by 1.9 times against the background of the herbicide Octapon extra and by 6.6 times against the background of Nanomet, as well as the return of the total chlorophyll content to the control values. On the basis of the obtained data, the bacterial strain 12N1 was recognized as a potential antidote for mitigating herbicidal stress in wheat and was identified as member of the species Pseudomonas zhaodongensis based on the cultural, morphological, physiological, biochemical features and the sequence of the 16S RNA gene.

Evaluation of Postemergence Weed Control Strategies in Herbicide-Resistant Isolines of Corn (Zea mays)

2006 ◽  
Vol 20 (1) ◽  
pp. 172-178 ◽  
Author(s):  
Karen A. Zuver ◽  
Mark L. Bernards ◽  
James J. Kells ◽  
Christy L. Sprague ◽  
Case R. Medlin ◽  
...  
Keyword(s):  
Weed Control ◽  
Control Strategies ◽  
Post Treatment ◽  
Growth And Yield ◽  
Yield Potential ◽  
Corn Yield ◽  
Corn Hybrids ◽  
Herbicide Resistant ◽  
Giant Ragweed ◽  
Pre Treatment

Herbicide-resistant corn hybrids offer additional options for POST weed control in corn, and growers may benefit from information on the consistency of these weed-control strategies. Studies were conducted in Indiana, Illinois, Michigan, and Ohio, in 2000 and 2001, to evaluate weed control among herbicide strategies for imidazolinone-resistant, glufosinate-resistant, glyphosate-resistant, and conventional corn. Isogenic hybrids were utilized to minimize variation in growth and yield potential among hybrids. The glyphosate-resistant corn postemergence (glyphosate-POST) treatment provided more consistent control of giant foxtail than the PRE, conventional corn postemergence (conventional-POST), glufosinate-resistant corn postemergence (glufosinate-POST), and imidazolinone-resistant corn postemergence (imi-POST) treatments. All four POST treatments were more consistent and provided greater control than the PRE treatment of the large-seeded broadleaf weeds velvetleaf, giant ragweed, common cocklebur, and morningglory species. Conventional-POST and imi-POST were more consistent than glufosinate-POST and glyphosate-POST treatments in controlling giant ragweed. There were no statistical differences in the variability of PRE or POST treatments for control of common lambsquarters, common ragweed, and redroot pigweed. Corn yield varied among locations and years. The glyphosate-POST treatment did not reduce yield relative to the weed-free treatment, the imi-POST and glufosinate-POST treatments each reduced yield in one of eight locations, and the conventional-POST treatment reduced yield in three of eight locations.

Comparison of Yield Potential and Herbicide Program Cost Between Herbicide‐Resistant and Conventional Soybean

2003 ◽  
Vol 26 (4) ◽  
pp. 915-934 ◽  
Author(s):  
Patrick M. Manning ◽  
Michael P. Popp ◽  
Terry C. Keisling ◽  
Lanny O. Ashlock ◽  
Don G. Dombek
Keyword(s):  
Yield Potential ◽  
Program Cost ◽  
Herbicide Resistant

scholarly journals Is continuous infusion of high-dose ifosfamide, a safe option? Drug review

2020 ◽  
Vol 5 ◽  
pp. 62-66 ◽  
Author(s):  
Mukul Arvind Gharote
Keyword(s):  
Continuous Infusion ◽  
Bolus Dose ◽  
Negative Impact ◽  
High Dose ◽  
Dose Infusion ◽  
Bone Sarcomas ◽  
Dose Variation ◽  
Higher Doses ◽  
Drug Review ◽  
Indian Data

Higher doses of ifosfamide are required to treat Sarcoma, Bone sarcomas, germ cell tumours and lymphoma. Recent protocols are based on continuous infusion of ifosfamide for 5-14 days. But what is the evidence behind it? and experience?. We present a review of high dose ifosfamide and our small experience in giving ifosfamide, both as continuous infusion and as bolus dose, as per the respective protocol. We also report MESNA with its role in reducing the urotoxicity and required dose variation according to Ifosfamide dose. In children, however, we prefer bolus as compared to continuous infusion due to nephrotoxicity. In India, many oncologists prefer to give ifosfamide as bolus dose over 3-4 hr and the dose given is much lesser. Many a times they face myelotoxicity and other non haematological toxicities. This leads to negative impact on patient compliance and ultimately the treatment is not completed properly. If a proper dose infusion is planned, this toxicity may be reduced to some extent. We need an Indian data on continuous vs bolus dose ifosfamide. High dose ifosfmide is required for better treatment of soft tissue sarcoma.

ENTREPRENEURIAL ACTIVITY AT DIFFERENT STAGES OF THE LIFE CYCLE: MAINTENANCE AND STIMULATION

2021 ◽  
Vol 0 (3) ◽  
pp. 50-54
Author(s):  
T.Y. ALTUFYEVA ◽  
Keyword(s):  
Life Cycle ◽  
Small Business ◽  
Russian Federation ◽  
Structural Changes ◽  
Negative Impact ◽  
Entrepreneurial Activity ◽  
Emergency Situations ◽  
Republic Of Bashkortostan ◽  
The Russian Federation ◽  
The Republic

The article discusses the problems of maintaining and stimulating entrepreneurial activity in territories of various stadial affiliation, first of all, in emergency situations in order to preserve their efficiency, stability and vitality. As you know, in the context of increasing external instability and the spread of a new coronavirus infection in the constituent entities of the Russian Federation, small and medium-sized businesses, a significant part of which were engaged in providing services to the population, suffered the most. The prolonged lockdown had a negative impact on the economic performance of small businesses, development opportunities, and the employment of workers in them. The article analyzes the dynamics of the development of small and medium-sized businesses in the Republic of Bashkortostan. The trend of reduction since 2018 of both the total number of small and medium-sized businesses and the number of employees employed in them is shown. Analysis of the situation in small business showed that there have been not only quantitative, but also structural changes in the development of small and medium-sized businesses in Belarus. In the current situation, the process of re-registration of small enterprises of the republic into individual entrepreneurs and micro-enterprises was initiated, due to their more competitive tax parameters in the current conditions and the possibility of reducing personnel to minimum values. The study shows significant improvements in the business climate in the Republic of Bashkortostan in recent years. At the end of 2019, in accordance with the Index of Administrative Pressure - 2020, the republic took 11th place among 85 constituent entities of the Russian Federation, having risen from 38th place over the year, which is due to a significant simplification of registration procedures, the introduction of the institution of “self-employed” on the territory of the republic, and other innovations. Nevertheless, at present, small business in the republic has not overcome the consequences of the economic crisis caused by an unfavorable epidemiological situation. The crisis is changing the forms of employment, it is becoming remote, remote, non-standard, online professions appear. The traditional mechanism of entrepreneurs' actions in conditions of deteriorating economic conditions is described. The author analyzes the measures taken by the SMEs themselves in the territories of various stages of the life cycle, in particular, the transition to Internet commerce and the state (three packages of support measures in the Republic of Belarus) to continue activities in the context of the coronavirus crisis. The article substantiates the urgency of developing a mechanism to stimulate entrepreneurial activity in emergency situations in the territories of the ascending and descending stages of the life cycle.

Diagnosis, extent, impacts, and management of subsoil constraints in the northern grains cropping region of Australia

Soil Research ◽  
2010 ◽  
Vol 48 (2) ◽  
pp. 105 ◽  
Author(s):  
Y. P. Dang ◽  
R. C. Dalal ◽  
S. R. Buck ◽  
B. Harms ◽  
R. Kelly ◽  
...  
Keyword(s):  
Grain Yield ◽  
Negative Impact ◽  
Cropping Systems ◽  
Water Extraction ◽  
Yield Potential ◽  
Grid Sampling ◽  
Pasture Legumes ◽  
Eastern Australia ◽  
Winter Crops ◽  
High Concentrations

Productivity of grain crops grown under dryland conditions in north-eastern Australia depends on efficient use of rainfall and available soil moisture accumulated in the period preceding sowing. However, adverse subsoil conditions including high salinity, sodicity, nutrient imbalances, acidity, alkalinity, and high concentrations of chloride (Cl) and sodium (Na) in many soils of the region restrict ability of crop roots to access this stored water and nutrients. Planning for sustainable cropping systems requires identification of the most limiting constraint and understanding its interaction with other biophysical factors. We found that the primary effect of complex and variable combinations of subsoil constraints was to increase the crop lower limit (CLL), thereby reducing plant available water. Among chemical subsoil constraints, subsoil Cl concentration was a more effective indicator of reduced water extraction and reduced grain yields than either salinity or sodicity (ESP). Yield penalty due to high subsoil Cl was seasonally variable, with more in-crop rainfall (ICR) resulting in less negative impact. A conceptual model to determine realistic yield potential in the presence of subsoil Cl was developed from a significant positive linear relationship between CLL and subsoil Cl: Since grid sampling of soil to identify distribution of subsoil Cl, both spatially across landscape and within soil profile, is time-consuming and expensive, we found that electromagnetic induction, coupled with yield mapping and remote sensing of vegetation offers potential to rapidly identify possible subsoil Cl at paddock or farm scale. Plant species and cultivars were evaluated for their adaptations to subsoil Cl. Among winter crops, barley and triticale, followed by bread wheat, were more tolerant of high subsoil Cl concentrations than durum wheat. Chickpea and field pea showed a large decrease in yield with increasing subsoil Cl concentrations and were most sensitive of the crops tested. Cultivars of different winter crops showed minor differences in sensitivity to increasing subsoil Cl concentrations. Water extraction potential of oilseed crops was less affected than cereals with increasing levels of subsoil Cl concentrations. Among summer crops, water extraction potential of millet, mungbean, and sesame appears to be more sensitive to subsoil Cl than that of sorghum and maize; however, the differences were significant only to 0.7 m. Among pasture legumes, lucerne was more tolerant to high subsoil Cl concentrations than the others studied. Surface applied gypsum significantly improved wheat grain yield on soils with ESP >6 in surface soil (0–0.10 m). Subsurface applied gypsum at 0.20–0.30 m depth did not affect grain yield in the first year of application; however, there was a significant increase in grain yield in following years. Better subsoil P and Zn partially alleviated negative impact of high subsoil Cl. Potential savings from improved N fertilisation decisions for paddocks with high subsoil Cl are estimated at ~$AU10 million per annum.

scholarly journals X-RAY MICROANALYSIS IN PHYTOPATHOLOGY

2019 ◽  
pp. 7-14
Author(s):  
L. Ph. Ashmarina ◽  
A. A. Sukhorukov ◽  
A. S. Korobeinikov ◽  
T. A. Galaktionova
Keyword(s):  
Potassium Concentration ◽  
Phosphorus Concentration ◽  
Wheat Roots ◽  
Affected Area ◽  
Infectious Process ◽  
X Ray ◽  
Calcium Magnesium ◽  
Wheat Leaves ◽  
Soybean Leaves

X-ray microanalysis methods have significantly expanded the functionality of electron microscopy. X-ray microanalysis is widely applied in activities, which deal with plant physiology. The paper explores the functioning of the stomach apparatus of fodder beans (Vícia fába). The regulation of the stomatal function depends on the potassium concentration in the closing cells. The authors investigated the infestation of wheat leaves with mildew (Erysiphe graminis) (Triticum astivum) and obtained the data that reveal the changes in the elemental composition of tissues in the affected area. This has contributed to find out the role of various elements during the infectious process in case of wheat plants with powdery dew contamination. The paper summarizes the materials on the application of X-ray microanalysis in phytopathology. It stipulates the participation of calcium in the formation of the mechanism of nematode capture in different age colonies of predatory fungi Arthrobotrys oligospores Fres was revealed. The data on tissue barrier in wheat roots, where the transport of both sodium and chlorine salting elements and potassium and calcium macro elements is controlled, are obtained. The authors show that transporting of these elements is regulated by active mechanisms in the endoderm cells. The article demonstrates the results of X-ray microanalysis aimed at determining the content of elements of magnesium, phosphorus, sulfur, potassium and calcium in soybean leaves affected by various diseases. The authors observed the changes in potassium, calcium, magnesium and phosphorus concentration in leaves with bacterial burn, ascochytosis and alternative. They argue the participation of elements in formation of plant resistance to disease and the role of these elements in the physiology of the infectious process.

THE INFLUENCE OF FACTORS INTERNAL AND EXTERNAL ENVIRONMENT OF TEK FOR EFFECTIVE SOCIO-ECONOMIC DEVELOPMENT OF RURAL AREAS

2020 ◽  
Vol 36 (2) ◽  
pp. 187-197
Author(s):  
M.T. Lukyanova ◽  
Keyword(s):  
Economic Development ◽  
Rural Areas ◽  
Distribution System ◽  
Negative Impact ◽  
Positive Impact ◽  
Electricity Production ◽  
Republic Of Bashkortostan ◽  
Socio Economic Development ◽  
Production And Distribution ◽  
The Republic

An important role in achieving stable socio-economic development of the Republic of Bashkortostan belongs to its fuel and energy complex-an important part of the national economy of the country. The capacity of the complex is evidenced by the fact that its share in the total volume of shipped products is up to 50%; the profit received is about 70%; revenues in the consolidated budget of the Republic-about 40%. The article analyzes the current problems of development of the territorial energy system. Based on the analysis of the company's competitiveness, the factors that require special attention are identified: innovations in terms of improving the energy efficiency of processes and reliability of the production and distribution system, building long-term relationships with customers, integrated links with consumer markets inside and outside the Republic of Belarus. Regional marketing, administrative and managerial factors have a positive impact on the development of electricity production and distribution in the Republic of Bashkortostan, while trends in technological and environmental factors have a negative impact.

Defence mechanisms associated with mycorrhiza-induced resistance in wheat against powdery mildew

2017 ◽  
Vol 44 (4) ◽  
pp. 443 ◽  
Author(s):  
Ghalia Mustafa ◽  
Ngan Giang Khong ◽  
Benoît Tisserant ◽  
Béatrice Randoux ◽  
Joël Fontaine ◽  
...  
Keyword(s):  
Induced Resistance ◽  
Control Strategies ◽  
Mycorrhizal Fungus ◽  
Arbuscular Mycorrhizal ◽  
Systemic Resistance ◽  
Wheat Roots ◽  
Genes Encoding ◽  
Primed State ◽  
Wheat Leaves ◽  
Related Proteins

To develop a more sustainable agriculture using alternative control strategies, mechanisms involved in the biocontrol ability of the arbuscular mycorrhizal fungus Funneliformis mosseae to protect wheat against the foliar biotrophic pathogen Blumeria graminis f. sp. tritici were investigated under controlled conditions. B. graminis infection on wheat leaves was reduced by 78% in mycorrhizal plants compared with non-mycorrhizal ones (control). Wheat roots inoculated with F. mosseae revealed a systemic resistance in leaves to B. graminis, after a 6-week co-culture. Accordingly, this resistance was associated with a significant reduction of B. graminis haustorium formation in epidermal leaf cells of mycorrhizal wheat and an accumulation of phenolic compounds and H2O2 at B. graminis penetration sites. Moreover, gene expression analysis demonstrated upregulation of genes encoding for several defence markers, such as peroxidase, phenylalanine ammonia lyase, chitinase 1 and nonexpressor of pathogenesis-related proteins 1 in mycorrhizal wheat only in the absence of the pathogen. This study showed that protection of wheat obtained against B. graminis in response to mycorrhizal inoculation by F. mosseae could be interpreted as a mycorrhiza-induced resistance (MIR). Our findings also suggest that MIR-associated mechanisms impaired the B. graminis development process and corresponded to a systemic elicitation of plant defences rather than a primed state in wheat leaves.

scholarly journals Migraine Frequency Decrease Following Prolonged Medical Cannabis Treatment: A Cross-Sectional Study

2020 ◽  
Vol 10 (6) ◽  
pp. 360 ◽  
Author(s):  
Joshua Aviram ◽  
Yelena Vysotski ◽  
Paula Berman ◽  
Gil M. Lewitus ◽  
Elon Eisenberg ◽  
...  
Keyword(s):  
Treatment Initiation ◽  
Negative Impact ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Medical Cannabis ◽  
Cross Sectional ◽  
Migraine Frequency ◽  
Treatment Data ◽  
Higher Doses

Background: Medical cannabis (MC) treatment for migraine is practically emerging, although sufficient clinical data are not available for this indication. This cross-sectional questionnaire-based study aimed to investigate the associations between phytocannabinoid treatment and migraine frequency. Methods: Participants were migraine patients licensed for MC treatment. Data included self-reported questionnaires and MC treatment features. Patients were retrospectively classified as responders vs. non-responders (≥50% vs. <50% decrease in monthly migraine attacks frequency following MC treatment initiation, respectively). Comparative statistics evaluated differences between these two subgroups. Results: A total of 145 patients (97 females, 67%) with a median MC treatment duration of three years were analyzed. Compared to non-responders, responders (n = 89, 61%) reported lower current migraine disability and lower negative impact, and lower rates of opioid and triptan consumption. Subgroup analysis demonstrated that responders consumed higher doses of the phytocannabinoid ms_373_15c and lower doses of the phytocannabinoid ms_331_18d (3.40 95% CI (1.10 to 12.00); p < 0.01 and 0.22 95% CI (0.05–0.72); p < 0.05, respectively). Conclusions: These findings indicate that MC results in long-term reduction of migraine frequency in >60% of treated patients and is associated with less disability and lower antimigraine medication intake. They also point to the MC composition, which may be potentially efficacious in migraine patients.

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