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https://www.readbyqxmd.com/read/29391538/chitosan-nanoparticles-functionalized-with-%C3%AE-cyclodextrin-a-promising-carrier-for-botanical-pesticides
#1
Estefânia V R Campos, Patrícia L F Proença, Jhones L Oliveira, Cirano C Melville, Jaqueline F Della Vechia, Daniel J de Andrade, Leonardo F Fraceto
Carvacrol and linalool are natural compounds extracted from plants and are known for their insecticidal and repellent activities, respectively. However, their low aqueous solubility, high photosensitivity, and high volatility restrict their application in the control of agricultural pests. The encapsulation of volatile compounds can be an effective way of overcoming such problems. Inclusion complexes between beta-cyclodextrin (β-CD) and carvacrol (CVC) or linalool (LNL) were investigated. Inclusion complexes were prepared by the kneading method...
February 1, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29345934/zein-nanoparticles-as-eco-friendly-carrier-systems-for-botanical-repellents-aiming-sustainable-agriculture
#2
Jhones L de Oliveira, Estefânia V R Campos, Anderson E S Pereira, Tatiane Pasquoto, Renata Lima, Renato Grillo, Daniel Junior de Andrade, Fabiano Aparecido Dos Santos, Leonardo Fernandes Fraceto
Botanical repellents represent one of the main ways of reducing the use of synthetic pesticides and the contamination of soil and hydric resources. However, the poor stability and rapid degradation of these compounds in the environment hinder their effective application in the field. Zein nanoparticles can be used as eco-friendly carrier systems to protect these substances against premature degradation, provide desirable release characteristics, and reduce toxicity in the environment and to humans. In this study, we describe the preparation and characterization of zein nanoparticles loaded with the main constituents of the essential oil of citronella (geraniol and R-citronellal)...
February 1, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29200720/extraction-of-chelerythrine-and-its-effects-on-pathogenic-fungus-spore-germination
#3
Qinghui Wei, Min Zhao, Xiaoyan Li
Background: Chemical fungicides are widely used to control crop diseases, but these chemicals have adverse effects. They destroy the ecological environment and even have toxic effects on human beings. In this context, the development of botanical pesticides is relevant. One potential botanical pesticide is chelerythrine, a main alkaloid of Chelidonium majus L., which has high antitumor, fungistasis, and antiphlogosis bioactivity. Objective: This study was designed to present an ultrasonic extraction method for chelerythrine and spore germination experiments to inhibit pathogenic fungi...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29190597/insecticidal-activity-of-camphene-zerumbone-and-%C3%AE-humulene-from-cheilocostus-speciosus-rhizome-essential-oil-against-the-old-world-bollworm-helicoverpa-armigera
#4
Giovanni Benelli, Marimuthu Govindarajan, Mohan Rajeswary, Baskaralingam Vaseeharan, Sami A Alyahya, Naiyf S Alharbi, Shine Kadaikunnan, Jamal M Khaled, Filippo Maggi
The fast-growing resistance development to several synthetic and microbial insecticides currently marketed highlighted the pressing need to develop novel and eco-friendly pesticides. Among the latter, botanical ones are attracting high research interest due to their multiple mechanisms of action and reduced toxicity on non-target vertebrates. Helicoverpa armigera (Lepidoptera: Noctuidae) is a key polyphagous insect pest showing insecticide resistance to several synthetic molecules used for its control. Therefore, here we focused on the rhizome essential oil extracted from an overlooked Asian plant species, Cheilocostus speciosus (J...
November 27, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29183617/azadirachtin-impact-on-mate-choice-female-sexual-receptivity-and-male-activity-in-drosophila-melanogaster-diptera-drosophilidae
#5
N Aribi, M C Oulhaci, S Kilani-Morakchi, J C Sandoz, L Kaiser, B Denis, D Joly
Azadirachtin, a neem compound (Azadirachta indica) with medical and anti-insect properties, is one the most successful botanical pesticides in agricultural use. However, its controversial impact on non-targeted species and its mechanism of action need to be clarified. In addition, Azadirachtin impact on pre- and post-mating traits remains largely undocumented. The current study examined the effects of Azadirachtin on Drosophila melanogaster as a non-target and model species. Azadirachtin was applied topically at its LD50 (0...
November 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/29183583/the-rescue-of-botanical-insecticides-a-bioinspiration-for-new-niches-and-needs
#6
REVIEW
Jannaina Velasques, Marlon Henrique Cardoso, Guilherme Abrantes, Breno Emanuel Frihling, Octávio Luiz Franco, Ludovico Migliolo
Crop protection is the basis of plant production and food security. Additionally, there are many efforts focused on increasing defensive mechanisms in order to avoid the damaging effects of insects, which still represent significant losses worldwide. Plants have naturally evolved different mechanisms to discourage herbivory, including chemical barriers such as the induction of defensive proteins and secondary metabolites, some of which have a historical link with bio-farming practices and others that are yet to be used...
November 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/29165339/chemical-compounds-and-bioactivity-of-aqueous-extracts-of-alibertia-spp-in-the-control-of-plutella-xylostella-l-lepidoptera-plutellidae
#7
Lucas L S Peres, Ana I Sobreiro, Irys F S Couto, Rosicléia M Silva, Fabricio F Pereira, Silvia C Heredia-Vieira, Claudia A L Cardoso, Munir Mauad, Silvana P Q Scalon, Sandra S Verza, Rosilda M Mussury
Successive applications of insecticides to control Plutella xylostella L. (Lepidoptera: Plutellidae) have resulted in the emergence of resistant populations of this insect. A novel control measure for this target insect could be the use of botanical insecticides derived from plant tissues. Hence, we experimentally tested aqueous extracts of Alibertia edulis (Rich.), Alibertia intermedia (Mart.), and Alibertia sessilis (Vell.) K. Schum. found in the Brazilian savannah in order to investigate their potential to disrupt the life cycle of P...
November 22, 2017: Insects
https://www.readbyqxmd.com/read/29105041/the-crop-residue-of-fiber-hemp-cv-futura-75-from-a-waste-product-to-a-source-of-botanical-insecticides
#8
Giovanni Benelli, Roman Pavela, Giulio Lupidi, Massimo Nabissi, Riccardo Petrelli, Stephane L Ngahang Kamte, Loredana Cappellacci, Dennis Fiorini, Stefania Sut, Stefano Dall'Acqua, Filippo Maggi
In the attempt to exploit the potential of the monoecious fiber hemp cv. Futura 75 in new fields besides textile, cosmetics and food industry, its crop-residue given by leaves and inflorescences was subjected to hydrodistillation to obtain the essential oils. These are niche products representing an ideal candidate for the development of natural insecticides for the control and management of mosquito vectors, houseflies and moth pests. After GC-MS analysis highlighting a safe and legal chemical profile (THC in the range 0...
November 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29064185/field-efficacy-of-insect-pathogen-botanical-and-jasmonic-acid-for-the-management-of-wheat-midge-sitodiplosis-mosellana-and-the-impact-on-adult-parasitoid-macroglenes-penetrans-populations-in-spring-wheat
#9
Govinda Shrestha, Gadi V P Reddy
The wheat midge, Sitodiplosis mosellana, is a serious pest of wheat worldwide. In North America, management of S. mosellana in spring wheat relies on the timely application of pesticides, based on midge adults levels caught in pheromone traps or seen via field scouting during wheat heading. In this context, biopesticides can be an effective alternative to pesticides for controlling S. mosellana within an integrated pest management program. A field study using insect pathogenic fungus Beauveria bassiana GHA, nematode Steinernema feltiae with Barricade polymer gel 1 %, pyrethrin, combined formulations of B...
October 24, 2017: Insect Science
https://www.readbyqxmd.com/read/29038528/transcriptome-analysis-of-spodoptera-frugiperda-sf9-cells-reveals-putative-apoptosis-related-genes-and-a-preliminary-apoptosis-mechanism-induced-by-azadirachtin
#10
Benshui Shu, Jingjing Zhang, Veeran Sethuraman, Gaofeng Cui, Xin Yi, Guohua Zhong
As an important botanical pesticide, azadirachtin demonstrates broad insecticidal activity against many agricultural pests. The results of a previous study indicated the toxicity and apoptosis induction of azadirachtin in Spodoptera frugiperda Sf9 cells. However, the lack of genomic data has hindered a deeper investigation of apoptosis in Sf9 cells at a molecular level. In the present study, the complete transcriptome data for Sf9 cell line was accomplished using Illumina sequencing technology, and 97 putative apoptosis-related genes were identified through BLAST and KEGG orthologue annotations...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29019960/molecular-insights-into-the-potential-insecticidal-interaction-of-%C3%AE-dihydroagarofuran-derivatives-with-the-h-subunit-of-v-atpase
#11
Jielu Wei, Ding Li, Xin Xi, Lulu Liu, Ximei Zhao, Wenjun Wu, Jiwen Zhang
Celangulin V (CV), one of dihydroagarofuran sesquiterpene polyesters isolated from Chinese bittersweet (Celastrus angulatus Maxim), is famous natural botanical insecticide. Decades of research suggests that is displays excellent insecticidal activity against some insects, such as Mythimna separata Walker. Recently, it has been validated that the H subunit of V-ATPase is one of the target proteins of the insecticidal dihydroagarofuran sesquiterpene polyesters. As a continuation of the development of new pesticides from these natural products, a series of β-dihydroagarofuran derivatives have been designed and synthesized...
October 11, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28954680/effects-of-pollution-on-freshwater-organisms
#12
B S Choudri, Yassine Charabi, Mahad Baawain, Mushtauqe Ahmed
This review covers research papers and scientific literature published in the year 2016 on the effects of anthropogenic pollutants on freshwater organisms. In the first, the review begins with two broad sections thate are mainly focused on research reviews and broad field studies and surveys. This is followed by reviews of research categorized in sections to reflect the pollutant class. These sections include wastewater, stormwater and non-point source pollution, nutrients, sediment cap materials and suspended clays, botanical extracts, surfactants, metals, persistent organic pollutants, pharmaceuticals, endocrine disruptors, pesticides, petroleum hydrocarbons and polycyclic aromatic hydrocarbons (PAHs), ionic liquids, and nanomaterials...
October 1, 2017: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28953894/comparative-role-of-neem-seed-extract-moringa-leaf-extract-and-imidacloprid-in-the-management-of-wheat-aphids-in-relation-to-yield-losses-in-pakistan
#13
COMPARATIVE STUDY
Farhan Mahmood Shah, Muhammad Razaq, Abid Ali, Peng Han, Julian Chen
Wheat being staple food of Pakistan is constantly attacked by major wheat aphid species, Schizaphis graminum (R.), Rhopalosiphum padi (L.) and Sitobion avenae (F.). Due to concern on synthetic chemical use in wheat, it is imperative to search for alternative environment- and human- friendly control measures such as botanical pesticides. In the present study, we evaluated the comparative role of neem seed extract (NSE), moringa leaf extract (MLE) and imidacloprid (I) in the management of the aphid as well as the yield losses parameters in late planted wheat fields...
2017: PloS One
https://www.readbyqxmd.com/read/28931324/phenoloxidase-an-effective-bioactivity-target-for-botanical-insecticide-screening-from-green-walnut-husks
#14
Wenyi Hu, Wenxian Du, Shumin Bai, Sitong Lv, Guang Chen
Phenoloxidase, a critical enzyme in insects, may serve as a promising target in botanical insecticide development. In an effort to identify active ingredients with insecticidal properties in green walnut husks, juglone and plumbagin were isolated from the chloroform extract using phenoloxidase as bioactive target with the IC50 of 0.247 g/L and 0.256 g/L, respectively. After an artificial diet feeding of the juglone or plumbagin, more than 50% corrected mortality in stomach toxicity form was observed in Pieris rapae Linne larvae and Helicoverpa armigera Hübner larvae at the concentration ≥0...
September 20, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28925152/-study-on-botanical-pesticides-and-its-application-in-production-of-traditional-chinese-medicine
#15
REVIEW
Peng Zhang, Xi-Wen Li, Lin-Lin Dong, Shi-Lin Chen
The issues including excessive pesticide residues and heavy metal contamination have become the bottle-neck in the development of Chinese herbal medicines. Compared with traditional chemical pesticides, biological pesticides, especially botanical pesticides, are more safe and environment-friendly, which were beneficial to the quality improvement Chinese medicinal materials. Though there exists a weak basic research and it is hard for promotion and regulation, the policy of good and the desire for botanical pesticides will accelerate its development, and replace traditional chemical pesticides gradually...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28660511/environmental-metabolic-footprinting-emf-vs-half-life-a-new-and-integrative-proxy-for-the-discrimination-between-control-and-pesticides%C3%A2-exposed-sediments-in-order-to-further-characterise-pesticides-environmental-impact
#16
Marie-Virginie Salvia, Amani Ben Jrad, Delphine Raviglione, Yuxiang Zhou, Cédric Bertrand
Pesticides are regularly used for a variety of applications and are disseminated throughout the environment. These substances may have significant negative impacts. To date, the half-life, t1/2, was often used to study the fate of pesticides in environmental matrices (water, soil, sediment). However, this value gives limited information. First, it does not evaluate the formation of by-products, resulting in the need for additional experiments to be performed to evaluate biodegradation and biotransformation products...
June 28, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28602985/comparative-studies-of-tripolyphosphate-and-glutaraldehyde-cross-linked-chitosan-botanical-pesticide-nanoparticles-and-their-agricultural-applications
#17
Michael Gabriel Paulraj, Savarimuthu Ignacimuthu, Munusamy Rajiv Gandhi, Azeez Shajahan, Pathalam Ganesan, Soosaimanickam Maria Packiam, Naif Abdhullah Al-Dhabi
A nanopesticide formulation was developed using chitosan and a botanical pesticide PONNEEM(®) and its antifeedant, larvicidal and growth regulating activities were screened against Helicoverpa armigera, a major lepidopteran pest. Chitosan nanoparticles (CSNs) were prepared by using two different cross-linking agents namely glutaraldehyde (GLA) and tripolyphosphate (TPP). The effects of cross linking agents on CSNs and the biological properties against the insect pest were also studied. Cross linking of chitosan with either TPP or GLA was confirmed through Fourier Transform Infrared (FTIR) spectroscopy...
June 9, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28595926/curcumin-induces-autophagic-cell-death-in-spodoptera-frugiperda-cells
#18
Sethuraman Veeran, Benshui Shu, Gaofeng Cui, Shengjiao Fu, Guohua Zhong
The increasing interest in the role of autophagy (type II cell death) in the regulation of insect toxicology has propelled study of investigating autophagic cell death pathways. Turmeric, the rhizome of the herb Curcuma longa (Mañjaḷ in Tamil, India and Jiānghuáng in Chinese) have been traditionally used for the pest control either alone or combination with other botanical pesticides. However, the mechanisms by which Curcuma longa or curcumin exerts cytotoxicity in pests are not well understood. In this study, we investigated the potency of Curcuma longa (curcumin) as a natural pesticide employing Sf9 insect line...
June 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28444217/direct-and-indirect-effects-of-pesticides-on-the-insidious-flower-bug-hemiptera-anthocoridae-under-laboratory-conditions
#19
Nathan J Herrick, Raymond A Cloyd
Greenhouse producers are interested in integrating natural enemies along with pesticides to suppress western flower thrips, Frankliniella occidentalis (Pergande), populations. The insidious flower bug, Orius insidiosus (Say), is a commercially available natural enemy of western flower thrips. We conducted a series of laboratory experiments to determine the direct and indirect effects of 28 pesticides (insecticides, miticides, and fungicides), 4 pesticide mixtures, and 4 surfactants (36 total treatments plus a water control) on the adult O...
June 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28390026/fabrication-of-highly-effective-mosquito-nanolarvicides-using-an-asian-plant-of-ethno-pharmacological-interest-priyangu-aglaia-elaeagnoidea-toxicity-on-non-target-mosquito-natural-enemies
#20
Giovanni Benelli, Marimuthu Govindarajan, Sengamalai Senthilmurugan, Periasamy Vijayan, Shine Kadaikunnan, Naiyf S Alharbi, Jamal M Khaled
Mosquitoes threaten the lives of humans, livestock, pets and wildlife around the globe, due to their ability to vector devastating diseases. Aglaia elaeagnoidea, commonly known as Priyangu, is widely employed in Asian traditional medicine and pest control. Medicinal activities include anti-inflammatory, analgesic, anticancer, and anesthetic actions. Flavaglines, six cyclopenta[b]benzofurans, a cyclopenta[bc]benzopyran, a benzo[b]oxepine, and an aromatic butyrolactone showed antifungal properties, and aglaroxin A and rocaglamide were effective to control moth pests...
April 8, 2017: Environmental Science and Pollution Research International
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