scholarly journals A review of plant protection against the olive fly (Bactrocera oleae (Rossi, 1790) Gmelin) and molecular methods to monitor the insecticide resistance alleles

2017 ◽  
Vol 109 (1) ◽  
pp. 135 ◽  
Author(s):  
Matjaž Hladnik

<p class="Abstract"><span lang="EN-US">Olive fly (<em>Bactrocera oleae </em>(Rossi, 1790) Gmelin) is one of the most important olive pests worldwide. Most plant protection measures are based on insecticides, especially organophosphates, pyrethroids, and recently a spinosad. Insecticides are used as cover sprays or in more environmentally friendly methods in which insecticides are used in combination with attractants and pheromones as bait sprays or for mass trapping. However, due to negative impacts of insecticides to environment, new plant protection methods are constantly developing with the aim to lower the consumption of insecticides or even to eliminate them by biological control with entomopathogenic organisms, sterile insect technique (SIT), or transgenic method RIDL (release of insects carrying a dominant lethal). However, these methods need to be improved in order to guarantee adequate protection. Alternative methods than those traditionally used are required due to long term usage causing the development of resistance to the insecticides, ultimately lowering their effectiveness. Molecular methods for monitoring the frequencies of resistant alleles and the current status of resistance alleles in olive growing countries are reviewed here.</span></p>

2009 ◽  
Vol 24 (4) ◽  
pp. 245-258 ◽  
Author(s):  
Mila Grahovac ◽  
Dusanka Indjic ◽  
Sanja Lazic ◽  
Slavica Vukovic

Agricultural production in developed countries undergoes various changes, some of which take place at consumers' request, while others are of ethical importance. This is especially true of plant protection. A global demand for reducing the use of chemical pesticides, which are regarded as harmful to the consumer, induce the development of new, less harmful and sustainable strategies of plant protection. Many chemical pesticides have been excluded from further use (e.g. organochlorine insecticides, methyl bromide) due to their potential risk to human health, the environment and non-target organisms, or development of resistance of harmful organisms to those substances. A need for developing alternative protection systems in the future is beyond doubt and they should be implemented either as an addition or a substitute for conventional pesticides. Well-considered use of biological products in combination with other protection measures would meet the requirements for producing sanitary and health-safe agricultural products, and food in general. In the paper, we discuss the modes of action, formulation types and applicability of different biological fungicides, and list them individually with their advantages and disadvantages, as well as the production and application risks associated with biological products.


2019 ◽  
Vol 19 (3) ◽  
pp. 179-188 ◽  
Author(s):  
Arkene Levy ◽  
Khalid Alhazzani ◽  
Priya Dondapati ◽  
Ali Alaseem ◽  
Khadijah Cheema ◽  
...  

Focal adhesion kinase (FAK) is a non-receptor tyrosine kinase, which is an essential player in regulating cell migration, invasion, adhesion, proliferation, and survival. Its overexpression and activation have been identified in sixty-eight percent of epithelial ovarian cancer patients and this is significantly associated with higher tumor stage, metastasis, and shorter overall survival of these patients. Most recently, a new role has emerged for FAK in promoting resistance to taxane and platinum-based therapy in ovarian and other cancers. The development of resistance is a complex network of molecular processes that make the identification of a targetable biomarker in platinum and taxane-resistant ovarian cancer a major challenge. FAK overexpression upregulates ALDH and XIAP activity in platinum-resistant and increases CD44, YB1, and MDR-1 activity in taxaneresistant tumors. FAK is therefore now emerging as a prognostically significant candidate in this regard, with mounting evidence from recent successes in preclinical and clinical trials using small molecule FAK inhibitors. This review will summarize the significance and function of FAK in ovarian cancer, and its emerging role in chemotherapeutic resistance. We will discuss the current status of FAK inhibitors in ovarian cancers, their therapeutic competencies and limitations, and further propose that the combination of FAK inhibitors with platinum and taxane-based therapies could be an efficacious approach in chemotherapeutic resistant disease.


Author(s):  
Devendra Kumar Verma ◽  
Hari Singh ◽  
Girdhari lal Meena ◽  
Jitendra Suman ◽  
Sharad Sachan

Background: Pulses are one of the most important food crops grown globally owed to their higher protein content. It also accounts for larger financial gains of the agricultural sector by amounting for a large part of the exports. The present study was carried out to determine the factors affecting production of pulse crops in Rajasthan. Methods: This paper based on secondary data collected over the years i.e. from 2000-01 to 2017-18. The Cobb-douglas production function was used to the observation for the estimation of elasticity of selected variables contributing to the production of pulses in Rajasthan state, Cobb douglas type production function was employed to assess the effects of seed, fertilizer, manure, human labour, irrigation, bullock labour and plant protection measures on pulses production. Result: The results from the study have shown that fertilizer and plant protection measures were positively significant while the variable corresponding to irrigation water was negatively significantly affecting the gram production. The variables such as seed and irrigation water were found positive and significant, while plant protection measures had significant negative effect on black gram production. Only two variables namely, fertilizer and irrigation water were found positively significant out of estimating production function of green gram.


Author(s):  
Saira Nawaz ◽  
Hafiz Muhammad Tahir ◽  
Muhammad Asif Mahmood ◽  
Muhammad Summer ◽  
Shaukat Ali ◽  
...  

Abstract Aedes aegypti (Linnaeus, 1762) is a major vector responsible for dengue transmission. Insecticides are being used as the most effective tool to control vector populations in Lahore, Pakistan. Control of Ae. aegypti is threatened by the development of resistance against insecticides. The current status of insecticide resistance was evaluated against pyrethroids (deltamethrin, cypermethrin, and lambda-cyhalothrin) in different populations of Lahore (Model Town, Mishri Shah, Sadar Cantt, Walton, and Valencia). The susceptibility of the larval and adult populations was tested following the standard WHO guidelines. Moderate to high levels of resistance were found against pyrethroids in the larval (RR50: 3.6–27.2 and RR90: 5–90) and adult populations (percentage mortality &lt; 98%). Biochemical assays revealed a statistically significant increase in the enzyme level in all field populations compared to the laboratory strain. The value of esterase was one-fold higher, monooxygenase was 3.9- to 4.7-fold higher, and glutathione S-transferases was 1.9- to 2.6-fold higher in field populations compared to the laboratory strain. These results depict the presence of resistance against deltamethrin, cypermethrin, and lambda-cyhalothrin in field populations of Lahore mediated by metabolic enzymes i.e. esterases, monooxygenases, and glutathione S-transferase.


2020 ◽  
Vol 1 (2) ◽  
pp. 86-88
Author(s):  
Sandeep Kumar ◽  
◽  
S. Nath ◽  
S.K. Kannaujia ◽  
S.P. Sonkar

On-farm testing of IPM module in pigeon pea against pod borer complex was carried out on farmers’ field of two villages of district Jaunpur by KVK Jaunpur- 1 during 2018 and 2019 with three components viz., IPM module, farmers’ practice, and untreated check without plant protection measures. The IPM interventions viz., growing pod borer tolerant variety, two rows of maize as a border crop, installation of pheromone traps and bird perches with the application of botanical based insecticide azadirachtin 1% at the vegetative stage as an oviposition deterrence, application of chlorantraniliprole, and flubendiamide at critical stages of pod borer appearance during bud initiation and flowering stages. The reduction in the larval population and pod damage in IPM treated plots resulted in a significant increase in grain yield (1525 kg/ha) followed by farmers’ practice (1195 kg/ha) and in untreated check (857 kg/ha) The increase in grain yield was due to an additional investment of Rs.4100/-ha towards IPM module and farmers’ practice (Rs.2600/-ha). The excess expenditure incurred resulted in the highest net return of Rs.47550/-ha in the IPM module as compared to farmers' practice and in untreated check resulted in the lowest net return of Rs.18250/-ha.


2020 ◽  
Vol 36 (1) ◽  
pp. 11-14
Author(s):  
Rupender Kumar ◽  
Pardeep Chahal ◽  
Mukesh Chaudhary

The study was carried out in four district of Haryana state namely Yamunanagar, Karnal, Hisar and Fatehabad, selected randomly. In total 240 respondents from 16 village were selected for analysis of Accessibility and frequency of ICT. Availability of mobile among the farmers was high followed by television, FM/Radio, internet accessed WhatsApp; face book; YouTube; E-mail, camera enabled mobile phone, Computer, , E-book and CD/VCD were found available and accessed by the farmers. Frequent use of mobile phone by farmers was found followed by TV, FM/Radio, internet, WhatsApp; Mobile phone, face book, YouTube, Computer, E-mail, E-book and CD/VCD. Farmers use of ICTs for the Variety of purpose included marketing, schedule of water supply, supportive facts, plant protection measures, marketing of dairy product, health care practices, management practices, breeding and reproduction practices. Variables education, socio-economic status, extension contact, mass media exposure, scientific orientation, economic motivation and risk orientation exhibited positive and significant whereas age exhibited negative significant with number of ICTs usage by farmers.


2021 ◽  
pp. 1-18
Author(s):  
Břetislav Andrlík

The paper focuses on measuring and quantification of the negative externality of noise pollution generated by freight transport in the Slovak Republic and the Czech Republic. The paper describes negative impacts and significance of noise externalities, whereas it is established that noise causes psychological and physiological harm to affected persons. A separate part of the paper is dedicated to the current status of the European legislation dealing with the issues of the negative externality of noise pollution, in particular Directive 2002/49/EC of the European Parliament and of the Council and Communication COM(2008) 435. The actual measurement of the total, average and marginal costs of noise pollution is implemented in line with the defined methodology and using expert studies defined in the paper. The measurement results show that the costs of the negative externality of noise pollution are high in both countries. According to authors’ calculations, the total costs of the negative externality of noise pollution amount to EUR 100.8 mil in the Czech Republic and EUR 16.9 mil in the Slovak Republic. The paper contains a proposal of internalisation of these costs in the form of performance charges applied to operation of heavy goods vehicles.


Signals ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 803-819
Author(s):  
Nabin Chowdhury

As digital instrumentation in Nuclear Power Plants (NPPs) is becoming increasingly complex, both attack vectors and defensive strategies are evolving based on new technologies and vulnerabilities. Continued efforts have been made to develop a variety of measures for the cyber defense of these infrastructures, which often consist in adapting security measures previously developed for other critical infrastructure sectors according to the requirements of NPPs. That being said, due to the very recent development of these solutions, there is a lack of agreement or standardization when it comes to their adoption at an industrial level. To better understand the state of the art in NPP Cyber-Security (CS) measures, in this work, we conduct a Systematic Literature Review (SLR) to identify scientific papers discussing CS frameworks, standards, guidelines, best practices, and any additional CS protection measures for NPPs. From our literature analysis, it was evidenced that protecting the digital space in NPPs involves three main steps: (i) identification of critical digital assets; (ii) risk assessment and threat analysis; (iii) establishment of measures for NPP protection based on the defense-in-depth model. To ensure the CS protection of these infrastructures, a holistic defense-in-depth approach is suggested in order to avoid excessive granularity and lack of compatibility between different layers of protection. Additional research is needed to ensure that such a model is developed effectively and that it is based on the interdependencies of all security requirements of NPPs.


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