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Phragmidium; Rubus; biological control; biological control agents; blackberries; climate; cultural control; decline; ecosystems; environmental impact; herbicides; humans; invasive species; leaf rust; models; plant pathogens; rivers; weather; weeds; Western Australia
Abstract:
... Human activities have had an adverse impact on ecosystems on a global scale and have caused an unprecedented redispersal of organisms, with both plants and pathogens moving from their regions of origin to other parts of the world. Invasive plants are a potential threat to ecosystems globally, and their management costs tens of billions of dollars per annum. Rubus anglocandicans (European blackberr ...
... Specialization is an important attribute of a biological control agent. The maritime pine bast scale, Matsucoccus feytaudi Ducasse (Hemiptera Matsucoccidae), is an invasive species in Southeast France and the North of Italy. Iberorhyzobius rondensis Eizaguirre (Coleoptera: Coccinellidae), is a recently described ladybird species. Both adults and larvae are predaceous, feeding on egg masses of M. f ...
Macrolophus; tomatoes; life history; biological control agents; Nesidiocoris tenuis; eggs; natural enemies; predators; mass rearing; pests; progeny; crops; immatures; Ephestia kuehniella; Tuta absoluta; females; biological control; Aleyrodidae
Abstract:
... The omnivorous predators Nesidiocoris tenuis (Reuter) and Macrolophus pygmaeus Rambur (Hemiptera: Miridae) are indigenous natural enemies that commonly inhabit tomato crops in the Mediterranean basin. Both predators are mass-reared and primarily released to control whiteflies, although recently they have also contributed to the control of the invasive tomato pest Tuta absoluta (Meyrick) (Lepidopte ...
... Due to the importance of the biological control of plant diseases, testing and introducing new biocontrol-active microorganisms is a major concern among plant pathologists. The causal agent of cotton seedling damping-off disease is Rhizoctonia solani. In this regard, we tried to investigate the antagonistic activities of Pseudomonas aureofaciens (chlororaphis) 30–84 (phenazine producing wild type ...
Y chromosome; biological control; carp; equations; extinction; females; genes; invasive species; males; models; sex ratio; unspecific monooxygenase
Abstract:
... Two autocidal genetic biocontrol methods have been proposed as a means to eliminate invasive fish by changing the sex ratio of the population: the Trojan Y Chromosome (TYC) strategy and the Daughterless Carp (DC) strategy. Both strategies were modeled using ordinary differential equations that allow the kinetics of female decline to be assessed under identical modeling conditions. When compared di ...
... Aflatoxin contamination of tree nuts is a growing concern for pistachio producing countries. Development of competitive exclusion strategies through application of atoxigenic Aspergillus flavus isolates is a highly effective route of natural aflatoxin mitigation. Aflatoxin assays conducted on a high number of native A. flavus isolates are a first step to identify potential biological control isola ...
... Wolbachia are maternal endosymbiotic bacterium, which infect a diverse range of arthropods, ranging from 20 to 76 % in nature. They are capable of inducing a wide range of reproductive abnormalities to their hosts, such as cytoplasmic incompatibility (CI), which has been proposed to be used as a tool to modify mosquitoes that are resistant to the development of pathogen, as an alternative vector c ...
agricultural products; agroforestry; air quality; biological control; case studies; climate; economic valuation; ecosystem services; farmers; intercropping; mathematical models; mineralization; pollination; society; soil quality; water quality; Canada
Abstract:
... This study provides the first complete framework for the valuation of ecosystem services of agroforestry and uses a tree-based intercropping (TBI) system in southern Québec, Canada, as a case study. Ten ecosystem services were estimated, all of which were of interest and directly applicable to most agricultural systems worldwide: nutrient mineralization, water quality, soil quality, pollination, b ...
... Standard semi-synthetic diet used for rearing Spodoptera litura (Fab) larvae contains many antimicrobials. This diet is not suitable for evaluating non-sporeforming bacteria. We determined the effect of antimicrobials present in S. litura semi-synthetic diet on growth of entomopathogenic Serratia marcescens . Nutrient broth supplemented with four and two times reduced doses of sorbic acid (0.15 g) ...
host range; parasitism; parasitoids; Halyomorpha halys; egg masses; DNA primers; DNA barcoding; DNA; biological control agents; polymerase chain reaction; cytochrome-c oxidase; Scelionidae; genes; nucleotide sequences; eggs; databases; biological control; Asia
Abstract:
... Evaluation of host–parasitoid associations can be tenuous using conventional methods. Molecular techniques are well placed to identify trophic links and resolve host–parasitoid associations. Establishment of the highly invasive brown marmorated stink bug, Halyomorpha halys (Hemiptera: Pentatomidae), outside Asia has prompted interest in the use of egg parasitoids (Hymenoptera: Scelionidae) as biol ...
... Plant pathogens that are dependent on arthropod vectors for transmission from host to host may enhance their own success by promoting vector survival and/or performance. The effect of pathogens on vectors may be direct or indirect, with indirect effects mediated by increases in host quality or reductions in the vulnerability of vectors to natural enemies. We investigated whether the bird cherry-oa ...
... This study discusses the isolation and identification of a new Streptomycetes highly active chitinase producer. Fifteen strains were isolated from Malaysian soil samples. The isolate WICC-A03 was found to be the most active chitinase producer. Its antifungal activity was evaluated against many phytopathogens. The identification of WICC-A03 using phenotypic and genotypic methods strongly indicated ...
... An experiment was conducted at Ukulinga Research Farm using 24 Merino sheep to test a combination of plant Ananas comosus (Ac) and fungus Clonostachys rosea (Cr) in controlling nematode parasites. Four treatments were assigned: 100 mg kg ⁻¹ body weight (BW) ethanol extract of Ac, 1 g of Cr product kg ⁻¹ BW, the combination of both treatments (AcCr), and a Control. Sheep within a treatment were pai ...
... In African cacao-producing countries, control of cacao black pod disease caused by Phytophthora megakarya is a priority. Introducing biological control agents as part of a P. megakarya control strategy is highly desirable, especially in a perspective of pesticide reduction. Trichoderma species are among the most used biological control agents. In Cameroon, Trichodermaasperellum formulated in wetta ...
Nolidae; Triadica sebifera; adults; biological control agents; color; female genitalia; larvae; males; new species; pupae; scientific illustration; taxon descriptions; wings; China; Southeastern United States
Abstract:
... Gadirtha fuscasp. n., is described from Guangxi Province, China. Gadirtha fusca differs in forewing color and pattern, male and female genitalia, and in larval pattern from all other species of Gadirtha. Gadirtha fusca has been evaluated as a potential biological control agent for Chinese tallow (Triadica sebifera (L.) Small, Euphorbiaceae) in the southeastern United States. Adult, male and female ...
... BACKGROUND: Spraying of entomopathogenic fungi formulated as wettable powders and suspension concentrates based on oils or water has been used for the management of crop pests. However, the use of fungal granules to control paddy field pests has not been fully explored. Herein, several Beauveria bassiana isolates (ERL1170, ERL1578 and ERL836) were produced as granules using a millet‐based solid cu ...
... A non-autoclaved solid diet was used to evaluate the entomopathogenic fungus Beauveria bassiana (Balsamo) Vuillemin (Hypocreales: Clavicipitaceae) strain NI8 and the insect growth regulator novaluron (Diamond® 0.83EC insecticide) for control of the tarnished plant bug, Lygus lineolaris (Palisot de Beauvois) (Hemiptera: Miridae). The diet was composed of toasted wheat germ, ground lima bean meal, s ...
... The study presents the first report on biocontrol of brown sheath rot disease of rice caused by Pseudomonas fuscovaginae using rhizo-bacterial isolate Bacillus amyloliquefaciens Bk7. Four potential bioactive antagonists were selected from 120 Bacillus isolates. Results obtained from in vitro laboratory assay showed that rhizosphere bacterial strain Bk7 and its metabolites significantly suppressed ...
Bacillus pumilus; Erwinia persicina; bacterial wilt; biofilm; biological control; gentian violet; growth promotion; growth retardation; in vitro studies; in vivo studies; jasmonic acid; liquid chromatography; mass spectrometry; plant growth-promoting rhizobacteria; polysaccharides; secondary metabolites; synergism; tomatoes
Abstract:
... Combination of different PGPR strains with complementary characteristics as a mixture to reduce possible instability under fluctuating environment has been considered practical. However, PGPR mixtures do not always play synergistic roles in growth promotion or biological control as reflected in our previous findings and other publications. In this work, we accidentally discovered that a mixture co ...
... In this research, the activity of antagonistic activity of 200 soil-borne Streptomycetes isolates assayed against Phytophthora parasitica and P. citrophthora in Kerman Province was investigated. Primary screening for antimicrobial activity was determined by dual culture experiments and 20 isolates showed high level of fungicidal activity in Agar disc method. The soils of Kerman are rich sources of ...