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Journal articles on the topic 'Bt soybean'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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1

Luz, P. M. C., A. Specht, S. V. Paula-Moraes, et al. "Owlet moths (Lepidoptera: Noctuoidea) associated with Bt and non- Bt soybean in the brazilian savanna." Brazilian Journal of Biology 79, no. 2 (2019): 248–56. http://dx.doi.org/10.1590/1519-6984.179759.

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Abstract The use of GMO expressing Bt toxin in soybean production has increased significantly in the last years in Brazil in order to manage the damage caused by lepidopteran pests. In this study, we compared the richness and abundance of owlet moths (Noctuoidea) associated with Bt and non-Bt soybean. We determined the temporal variations as a function of phenology, and correlated the population variations of the most common species with meteorological variables. The research was conducted at the experimental area of Embrapa Cerrados. The collection method used was differentiated being suppres
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Sosa, Cinthia, Victor Gómez, Maria Ramírez, Edgar Gaona, and Magin Gamarra. "Toxicity of the Bt Protein Cry1Ac Expressed in Leaves of the Event of Transgenic Soybean Released in Paraguay Against Spodoptera cosmioides." Journal of Agricultural Science 12, no. 12 (2020): 107. http://dx.doi.org/10.5539/jas.v12n12p107.

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Spodoptera cosmioides Walk (Lepidoptera: Noctuidae) is a polyphagous species, considered a secondary pest in soybean crop. The Intacta soybean (Bt soybean) event was released in Paraguay with Bt proteins which are supposed to be toxic for caterpillars. However, the effects of these proteins in the Spodoptera cosmioides biology still uncertainty. This study evaluated the biological activity of Bt soybean in S. cosmioides that were fed on Bt and non-Bt soybean leaves under laboratory conditions. The experiment was carried out at the Laboratory of Entomology; temperature 26±2 &ordm
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BORTOLOTTO, ORCIAL C., ADENEY F. BUENO, KARLA BRAGA, GUSTAVO C. BARBOSA, and ALISSON SANZOVO. "Biological characteristics of Heliothis virescens fed with Bt-soybean MON 87701 × MON 89788 and its conventional isoline." Anais da Academia Brasileira de Ciências 86, no. 2 (2014): 973–80. http://dx.doi.org/10.1590/0001-3765201420130495.

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This study aimed to evaluate the larval biology of Heliothis virescens in soybean MON 87701 x MON 89788 and its isogenic non-Bt. In general, the impact of soybean MON 87701 x MON 89788 on H. virescens was evidenced in all bioassays, 100% larval mortality, independent of the structure (leaf or pod) consumed by the pest. The small larvae (1st and 3rdinstar) demonstrated that they were unable to damage fresh pods of soybean, regardless of whether Bt or not Bt. The large larvae (5th instar) fed on soybean MON 87701 x MON 89788 soybeans consumed three times less compared to larvae fed on non-Bt soy
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McPherson, Robert M., and Ted C. MacRae. "Assessing Lepidopteran Abundance and Crop Injury in Soybean Lines Exhibiting a Synthetic Bacillus thuringiensis cry1 A Gene." Journal of Entomological Science 44, no. 2 (2009): 120–31. http://dx.doi.org/10.18474/0749-8004-44.2.120.

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Transgenic lines of soybean, Glycine max (L.) Merrill, expressing a synthetic cry 1A gene from Bacillus thuringiensis Berliner (Bt), were evaluated in replicated field trials in 1999–2002 for suppression of lepidopteran pests and the resultant crop injury. Velvetbean caterpillar, Anticarsia gemmatalis Hübner, soybean looper, Pseudoplusia includens (Walker), and green cloverworm, Hypena scabra (F.), population densities were essentially absent throughout the growing season in each year of the study in each of the Bt lines evaluated compared with moderate (5–10 larvae per row-m) to heavy (15–20
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Nardon, Adriana C., Sandra M. Mathioni, Leandro V. dos Santos, and Daniel D. Rosa. "Primeiro registro de Rachiplusia nu (Guenée, 1852) (Lepidoptera: Noctuidae) sobrevivendo em soja Bt no Brasil." Entomological Communications 3 (September 24, 2021): ec03028. http://dx.doi.org/10.37486/2675-1305.ec03028.

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Loopers are important defoliators in several crop species. Among the loopers attacking non-Bt soybean cultivars, Chrysodeixis includens (Walker, [1858]) was the most common. The use of trangenic Bt soybean in appromately 70% of the soybean fields in Brazil led to a decrease in the loopers in these fields. However, technical field specialists and soybean producers recently observed Plusiinae larvae damaging transgenic Bt soybean, posing a risk over the Bt technology. Therefore, the aim of this study was to identify and confirm the catterpillar species feeding on transgenic Bt soybean fields in
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6

Silva, Juliana Barroso, Raphael Mori, Luiz Henrique Marques, et al. "Water Deprivation Induces Biochemical Changes Without Reduction in the Insecticidal Activity of Maize and Soybean Transgenic Plants." Journal of Economic Entomology 114, no. 4 (2021): 1817–22. http://dx.doi.org/10.1093/jee/toab109.

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Abstract Like conventional crops, transgenic plants expressing insecticidal toxins from Bacillus thuringiensis (Bt) are subjected to water deprivation. However, the effects of water deprivation over the insecticidal activity of Bt plants are not well understood. We submitted Bt maize and Bt soybean to water deprivation and evaluated biochemical stress markers and the insecticidal activity of plants against target insects. Bt maize (DAS-Ø15Ø7-1 × MON-89Ø34-3 × MON-ØØ6Ø3–6 × SYN-IR162-4) containing the PowerCore Ultra traits, Bt soybean (DAS-444Ø6-6 × DAS-81419-2) with the Conkesta E3 traits, an
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Almeida, Mauricélia F., Clébson S. Tavares, Euires O. Araújo, Marcelo C. Picanço, Eugênio E. Oliveira, and Eliseu José G. Pereira. "Plant Resistance in Some Modern Soybean Varieties May Favor Population Growth and Modify the Stylet Penetration of Bemisia tabaci (Hemiptera: Aleyrodidae)." Journal of Economic Entomology 114, no. 2 (2021): 970–78. http://dx.doi.org/10.1093/jee/toab008.

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Abstract Complaints of severe damage by whiteflies in soybean fields containing genetically engineered (GE) varieties led us to investigate the role of transgenic soybean varieties expressing resistance to some insects (Cry1Ac Bt toxin) and to herbicide (glyphosate) on the population growth and feeding behavior of Bemisia tabaci (Gennadius) MEAM1 (Hemiptera: Aleyrodidae). In the laboratory, the whiteflies reared on the GE Bt soybeans had a net reproductive rate (R0) 100% higher and intrinsic rate of population increase (rm) 15% higher than those reared on non-GE soybeans. The increased demogra
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8

Bundy, C. Scott, and R. M. McPherson. "Cropping Preferences of Common Lepidopteran Pests in a Cotton/Soybean Cropping System." Journal of Entomological Science 42, no. 1 (2007): 105–18. http://dx.doi.org/10.18474/0749-8004-42.1.105.

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Two soybean varieties (an early-maturing Group V and a later-maturing Group VII) and two cotton varieties (a conventional and a transgenic Bacillus thuringiensis Berliner [Bt]) were grown in adjacent replicated large field plots at two locations for 3 growing seasons. The abundance of commonly-observed lepidopteran pests within these two crops was observed weekly throughout each growing season. The green cloverworm, Hypena scabra (F.); soybean looper, Pseudoplusia includens (Walker), and; velvetbean caterpillar, Anticarsia gemmatalis Hübner, preferred soybeans over cotton at all six test sites
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9

Murúa, María, Martín Vera, María Herrero, Sofia Fogliata, and Andrew Michel. "Defoliation of Soybean Expressing Cry1Ac by Lepidopteran Pests." Insects 9, no. 3 (2018): 93. http://dx.doi.org/10.3390/insects9030093.

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Lepidoptera, stink bugs, and weevils are important pests in soybean. For lepidopteran control, insecticides and seed treatments are used. As an alternative, Bt soybean was developed to control primary pests of Lepidoptera such as Rachiplusia nu (Guenée) (Noctuidae), Chrysodeixisincludens (Walker) (Noctuidae), Anticarsia gemmatalis Hübner (Erebidae), Helicoverpa gelotopoeon (Dyar) (Noctuidae), and Crocidosema aporema (Walsingham) (Tortricidae). However, the use of transgenic plants, and the resulting reduction of insecticide against target pests, may allow other pest species to become more prev
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Bortolotto, Orcial C., Adeney F. Bueno, Ynaiara K. Stopa, Gabriela V. Silva, and Ana Paula Queiroz. "Development of Dichelops melacanthus and its egg parasitoid Telenomus podisi reared on Bt-soybean MON 87701 x MON 89788 and its near conventional isoline under different temperatures." Anais da Academia Brasileira de Ciências 88, no. 2 (2016): 1023–34. http://dx.doi.org/10.1590/0001-3765201620150257.

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Dichelops melacanthus was studied under controlled conditions (60 ± 10% RH and 14/10 h L/D photoperiod), and three constant temperatures (19, 25, and 31 ± 2 °C). Fresh pods of MON 87701 × MON 89788 soybeans and its near non-Bt isoline (A5547) were supplied to nymphs and adults. The biology of T. podisi was studied in the same controlled RH conditions, but only at the standard temperature of 25 ± 2 °C. Overall, the development of D. melacanthus was better at higher temperatures, which accelerated the development of the stink bug without affecting adult biological parameters. No influence of Bt-
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11

Fanela, Thiago L. M., Edson L. L. Baldin, Thomas E. Hunt, and Rodrigo D. Faria. "Baseline Plant-to-Plant Larval Movement of Spodoptera eridania in Bt and Non-Bt Soybean and Its Possible Impacts on IRM." Journal of Economic Entomology 113, no. 4 (2020): 1741–52. http://dx.doi.org/10.1093/jee/toaa079.

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Abstract The widespread use of transgenic technologies has led to the emergence of insect populations resistant to Bt toxins. Some lepidopteran pest species also appear to naturally have some level of tolerance to certain proteins, such as some species of Spodoptera to Cry1Ac. One of the main strategies to manage resistance is the use of refuge areas, the success of which is in part dependent on larval movement of the target pest. Thus, in order to assess the viability of a refuge strategy addressing Spodoptera eridania Stoll (Lepidoptera: Noctuidae) in Bt soybean, it was evaluated the larval
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Sartori Suzana, Crislaine, Karoline Maria Melara, and José Roberto Salvadori. "Inseticidas nas sementes e a entomotoxina cry 1 ac protegem a soja contra a lagarta-do-velho-mundo." COLLOQUIUM AGRARIAE 16, no. 6 (2020): 87–93. http://dx.doi.org/10.5747/ca.2020.v16.n6.a410.

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The Helicoverpa armigera caterpillar occurs from the emergence of the plants to the reproductive stage of the soybean crop, which can cause significant losses.As an initial pest, both neonate and more developed caterpillars can be found, the latter from the previous crop.The use of Bt cultivars and insecticides in seed treatment are options to pest managementat the beginning of soybean development, but there are doubtsabout the efficacy of these control methods. Thus, the objective was to evaluate the protective effect of insecticides applied to seeds and Cry 1Ac protein, in relation to the at
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13

Ali, M. Ibrahim, S. Y. Young, and R. C. McNew. "Host Plant Influence on Activity of Bacillus thuringiensisBerliner Against Lepidopterous Pests of Crops." Journal of Entomological Science 39, no. 3 (2004): 311–17. http://dx.doi.org/10.18474/0749-8004-39.3.311.

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Mortality of second-instar Helicoverpa zea (Boddie), Spodoptera exigua (Hübner) and Pseudoplusia includens (Walker) fed Bacillus thuringiensis Berliner (Bt), Dipel ES®-sprayed leaves of field grown cotton, soybean and tomato were compared in laboratory bioassays. The median lethal concentration (LC50) for larvae of all species fed Bt-treated leaf tissue was higher for cotton than for soybean or tomato. The LC50 for larvae fed Bt-treated soybean and tomato leaves did not differ significantly for any species of insects. When the mean number of days until death was plotted against percent surviva
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14

Müller, Mônica A., Ana C. Klosowski, Maristella Dalla Pria, Sérgio M. Mazaro, and Louise L. May De Mio. "Bacillus thuringiensis Combined With Fungicide Applications in the Management of Soybean Leaf Diseases." Journal of Agricultural Science 11, no. 13 (2019): 226. http://dx.doi.org/10.5539/jas.v11n13p226.

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Asian soybean rust (ASR) caused by Phakopsora pachyrhizi is the main soybean leaf disease in Brazil. Downy mildew (Peronospora manshurica) and powdery mildew (Microsphaera diffusa) are important soybean foliar diseases of occurrence in Paraná state. To reduce severity and yield losses caused by soybean foliar diseases, this work aimed to verify the efficacy of different application doses of the commercial product Dipel® Bacillus thuringiensis (Bt), which is a biological insect controller, combined with number of Opera® fungicide (pyraclostrobin + epoxiconazole) inter
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15

Martins-Salles, Silvia, Vilmar Machado, Laura Massochin-Pinto, and Lidia M. Fiuza. "Genetically modified soybean expressing insecticidal protein (Cry1Ac): Management risk and perspectives." FACETS 2, no. 1 (2017): 496–512. http://dx.doi.org/10.1139/facets-2017-0006.

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A Bt soybean has been recently developed, thus, efficiently regulating the populations of major lepidopteran pests. However, in other cases, these benefits have been reduced or lost because of the rapid evolution of pest resistance to the Bt toxins in transgenic crops. When pest populations are exposed to Bt crops and to refuges (non- Bt plants), the evolution of resistance is governed by the fitness of resistant individuals relative to susceptible individuals for both the presence and absence of Bt toxins. One major ecological concern regarding the biosafety of Bt crops on the environment is
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Schünemann, Rogério, Neiva Knaak, and Lidia Mariana Fiuza. "Mode of Action and Specificity of Bacillus thuringiensis Toxins in the Control of Caterpillars and Stink Bugs in Soybean Culture." ISRN Microbiology 2014 (January 20, 2014): 1–12. http://dx.doi.org/10.1155/2014/135675.

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The bacterium Bacillus thuringiensis (Bt) produces delta-endotoxins that possess toxic properties and can be used as biopesticides, as well as a source of genes for the construction of transgenic plants resistant to insects. In Brazil, the introduction of Bt soybean with insecticidal properties to the velvetbean caterpillar, the main insect pest of soybean, has been seen a promising tool in the management of these agroecosystems. However, the increase in stink bug populations in this culture, in various regions of the country, which are not susceptible to the existing genetically modified plan
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Bacalhau, Fabiana B., Patrick M. Dourado, Renato J. Horikoshi, et al. "Performance of Genetically Modified Soybean Expressing the Cry1A.105, Cry2Ab2, and Cry1Ac Proteins Against Key Lepidopteran Pests in Brazil." Journal of Economic Entomology 113, no. 6 (2020): 2883–89. http://dx.doi.org/10.1093/jee/toaa236.

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Abstract The pyramided genetically modified (GM) soybean [Glycine max L. (Merr.)] MON87751 × MON87708 × MON87701 × MON89788, expressing Cry1A.105, Cry2Ab2, and Cry1Ac from Bacillus thuringiensis Berliner, was approved for commercial use in Brazil. We conducted laboratory, greenhouse, and field studies to assess the efficacy of this Bt soybean against key soybean lepidopteran pests. Neonates of Anticarsia gemmatalis (Hübner) (Lepidoptera: Erebidae), Chrysodeixis includens (Walker), and Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) were exposed to Bt proteins in diet-overlay bioassays.
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Chen, Danqi, William J. Moar, Agoston Jerga, et al. "Bacillus thuringiensis chimeric proteins Cry1A.2 and Cry1B.2 to control soybean lepidopteran pests: New domain combinations enhance insecticidal spectrum of activity and novel receptor contributions." PLOS ONE 16, no. 6 (2021): e0249150. http://dx.doi.org/10.1371/journal.pone.0249150.

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Two new chimeric Bacillus thuringiensis (Bt) proteins, Cry1A.2 and Cry1B.2, were constructed using specific domains, which provide insecticidal activity against key lepidopteran soybean pests while minimizing receptor overlaps between themselves, current, and soon to be commercialized plant incorporated protectants (PIP’s) in soybean. Results from insect diet bioassays demonstrate that the recombinant Cry1A.2 and Cry1B.2 are toxic to soybean looper (SBL) Chrysodeixis includens Walker, velvetbean caterpillar (VBC) Anticarsia gemmatalis Hubner, southern armyworm (SAW) Spodoptera eridania, and bl
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Yu, Huilin, Yunhe Li, Xiangju Li, and Kongming Wu. "Arthropod Abundance and Diversity in Transgenic Bt Soybean." Environmental Entomology 43, no. 4 (2014): 1124–34. http://dx.doi.org/10.1603/en13337.

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Oliveira, Fabiola de, and Marcos Gino Fernandes. "Additive Positive Effects of Pollination on Bt and Non-Bt Soybean Cultivars by Honey Bee and Native Flower-Visiting." Journal of Agricultural Science 13, no. 1 (2020): 157. http://dx.doi.org/10.5539/jas.v13n1p157.

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In addition to the increase in the number of pods produced, a well-conducted pollination also contributes to an increase in the number of grains per pod, improves the quality of the grains and seeds, and renders the grain ripening more uniform, thus, increasing the production at harvest. The objective of the present study was to quantify the benefits of flower-visiting insects in soybean production. The experiment was conducted with two soybean cultivars, one Bt and one non-Bt. During the flowering period, 150 plants of each cultivar were randomly selected, yielding 25 replicates (three plants
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Świątkiewicz, Małgorzata, Dariusz Bednarek, Jan Markowski, Ewa Hanczakowska, and Krzysztof Kwiate. "Effect of feeding genetically modified maize and soybean meal to sows on their reproductive traits, haematological indices and offspring performance." Bulletin of the Veterinary Institute in Pulawy 57, no. 3 (2013): 413–18. http://dx.doi.org/10.2478/bvip-2013-0071.

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Abstract The effect of Roundup Ready MON-40-3-2 soybean meal and Bt maize MON810 on sows performance and haematological indices, including parameters of erythrocytes, leukocytes, and trombocytes, as well as the piglets rearing indices were evaluated in the experiment carried out on 24 sows and their progeny. After mating sows were divided into groups: I - control, conventional soybean meal and conventional maize; II - genetically modified (GM) soybean meal and conventional maize; III - conventional soybean meal and GM maize; IV - GM soybean meal and GM maize. All used feed mixtures were isonit
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Martin, Macarena, Debora Boaventura, and Ralf Nauen. "Evaluation of Reference Genes and Expression Level of Genes Potentially Involved in the Mode of Action of Cry1Ac and Cry1F in a Susceptible Reference Strain of Chrysodeixis includens." Insects 12, no. 7 (2021): 598. http://dx.doi.org/10.3390/insects12070598.

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Soybean looper (SBL), Chrysodeixis includens (Walker), is one of the major lepidopteran pests of soybean in the American continent. SBL control relies mostly on the use of insecticides and genetically modified crops expressing Bacillus thuringiensis (Bt) insecticidal Cry proteins. Due to the high selection pressure exerted by these control measures, resistance has developed to different insecticides and Bt proteins. Nevertheless, studies on the mechanistic background are still scarce. Here, the susceptibility of the laboratory SBL-Benzon strain to the Bt proteins Cry1Ac and Cry1F was determine
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Basak, Sanjay, Nasreen Z. Ehtesham, Boindala Sesikeran, and Sudip Ghosh. "Detection and Identification of Transgenic Elements by Fluorescent-PCR-Based Capillary Gel Electrophoresis in Genetically Modified Cotton and Soybean." Journal of AOAC INTERNATIONAL 97, no. 1 (2014): 159–65. http://dx.doi.org/10.5740/jaoacint.13-027.

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Abstract A detection method for genetically modified foods is an essential regulatory requirement for many countries. The present study is aimed at developing a qualitative method for detection of genetically modified organisms by combining PCR methodology with capillary gel electrophoresis (PCR-CGE) in a sequencing platform to detect Bacillus thuringiensis (Bt)-cotton (MON 531)and Roundup Ready (RR) soybean (GTS 40-3-2). A sensitive duplex PCR-CGE method was developed in which target DNA sequences (35S and Nos) were separated both by size and color to detect 0.01% Cry1Ac DNA (w/w) in Bt-cotto
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Bento, Juliana Aparecida Correia, Priscila Zaczuk Bassinello, Aline Oliveira Colombo, Rayane Jesus Vital, and Rosângela Nunes Carvalho. "Vegan tempeh burger: prepared with aged bean grains fermented by Rhizopus oligosporus inoculum." Research, Society and Development 10, no. 2 (2021): e38110212503. http://dx.doi.org/10.33448/rsd-v10i2.12503.

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This work has the objective of producing inoculum to enable tempeh production from aged common bean, by checking fermentation development according to the soybean/common bean ratio and defining the procedure for tempeh preparing in compliance with regulation on standards for acceptable microbiological contamination. Tempehs of common bean (BT), soybean (ST) and both (SBT) were produced by two methods (traditional and modified). The viable BT was used for hamburger preparation, which was evaluated for sensory acceptance in comparison to the traditional ST. The best inoculum Rhizopus oligosporus
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Garlet, Cínthia G., Rafaella P. Moreira, Patricia da S. Gubiani, Ramon B. Palharini, Juliano R. Farias, and Oderlei Bernardi. "Fitness Cost of Chlorpyrifos Resistance in Spodoptera frugiperda (Lepidoptera: Noctuidae) on Different Host Plants." Environmental Entomology 50, no. 4 (2021): 898–908. http://dx.doi.org/10.1093/ee/nvab046.

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Abstract Spodoptera frugiperda (J. E. Smith, 1797) is a polyphagous pest of global relevance due to the damage it inflicts on agricultural crops. In South American countries, this species is one of the principal pests of maize and cotton. Currently, S. frugiperda is also emerging as an important pest of soybeans and winter cereals in Brazil. Chemical control is one of the main control tactics against S. frugiperda, even though resistance against numerous modes of action insecticides has been reported. To support insect resistance management programs, we evaluated the fitness costs of resistanc
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Trapmann, Stefanie, Heinz Schimmel, Gerard Nico Kramer, Guy van den Eede, and Jean Pauwels. "Production of Certified Reference Materials for the Detection of Genetically Modified Organisms." Journal of AOAC INTERNATIONAL 85, no. 3 (2002): 775–79. http://dx.doi.org/10.1093/jaoac/85.3.775.

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Abstract Certified reference materials (CRMs) are an essential tool in the quality assurance of analytical measurements. They are produced, certified, and used in accordance with relevant ISO (International Organization for Standardization) and BCR (Community Bureau of Reference) guidelines. The Institute for Reference Materials and Measurements (IRMM; Geel, Belgium) has produced the first powdery genetically modified organism (GMO) CRMs in cooperation with the Institute for Health and Consumer Protection (Ispra, Italy). Until now, different weight percentages in the range of 0–5%for 4 GMOs in
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Liu, Lu, Eric Schepers, Amy Lum, et al. "Identification and Evaluations of Novel Insecticidal Proteins from Plants of the Class Polypodiopsida for Crop Protection against Key Lepidopteran Pests." Toxins 11, no. 7 (2019): 383. http://dx.doi.org/10.3390/toxins11070383.

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Various lepidopteran insects are responsible for major crop losses worldwide. Although crop plant varieties developed to express Bacillus thuringiensis (Bt) proteins are effective at controlling damage from key lepidopteran pests, some insect populations have evolved to be insensitive to certain Bt proteins. Here, we report the discovery of a family of homologous proteins, two of which we have designated IPD083Aa and IPD083Cb, which are from Adiantum spp. Both proteins share no known peptide domains, sequence motifs, or signatures with other proteins. Transgenic soybean or corn plants expressi
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AREAL, F. J., L. RIESGO, and E. RODRÍGUEZ-CEREZO. "Economic and agronomic impact of commercialized GM crops: a meta-analysis." Journal of Agricultural Science 151, no. 1 (2012): 7–33. http://dx.doi.org/10.1017/s0021859612000111.

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SUMMARYThe present paper presents a meta-analysis of the economic and agronomic performance of genetically modified (GM) crops worldwide. Bayesian, classical and non-parametric approaches were used to evaluate the performance of GM crops v. their conventional counterparts. The two main GM crop traits (herbicide tolerant (HT) and insect resistant (Bt)) and three of the main GM crops produced worldwide (Bt cotton, HT soybean and Bt maize) were analysed in terms of yield, production cost and gross margin. The scope of the analysis covers developing and developed countries, six world regions, and
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Olson, D. M., and J. R. Ruberson. "Crop-specific mortality of southern green stink bug eggs in Bt- and non-Bt cotton, soybean and peanut." Biocontrol Science and Technology 22, no. 12 (2012): 1417–28. http://dx.doi.org/10.1080/09583157.2012.731495.

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Walker, David R., James M. Narvel, H. Roger Boerma, John N. All, and Wayne A. Parrott. "A QTL that enhances and broadens Bt insect resistance in soybean." Theoretical and Applied Genetics 109, no. 5 (2004): 1051–57. http://dx.doi.org/10.1007/s00122-004-1714-9.

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Isakova, Iryna A., Yegor B. Isakov, Svetlana E. Rymar, Vitalii A. Kordium, and James R. Fuxa. "Specificity of Ukrainian Bacillus thuringiensis Berliner Strains for Agricultural Pests of the Southeastern United States." Journal of Entomological Science 42, no. 2 (2007): 272–85. http://dx.doi.org/10.18474/0749-8004-42.2.272.

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Insecticidal proteins naturally produced by Bacillus thuringiensis Berliner (Bt) present an environmentally friendly alternative to the conventional chemicals used for the pest control. We identified crylA, crylB, and cry1C genes encoding the toxic proteins in 13 Bt strains isolated in Ukraine and then determined the toxicity of these strains against lepidopteran and coleopteran pests from the southeastern U.S. Five of the Bt strains were highly toxic to two lepidopteran pests: three against the soybean looper (Pseudoplusia includens Walker), and two others against the cabbage looper (Trichopl
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Sadashivanagowda, S. N. O., S. C. Alagundagi, B. T. Nadagouda, B. I. Bidari, and V. P. Chimmad. "System Productivity and Resource Use Efficiency of Alternative Cropping Systems for Sugarcane in Karnataka." International Journal of Bio-resource and Stress Management 12, no. 3 (2021): 170–78. http://dx.doi.org/10.23910/1.2021.2275b.

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The field experiments were conducted at Agricultural Research Station, Hukkeri, Belagavi, Karnataka, India during 2018–19 and 2019–20 to study the system productivity and resource use efficiency of alternative cropping systems for sugarcane. There were 11 treatments involving different cropping systems viz., soybean–sorghum–ridge gourd, pigeon pea±green gram (1:1)–beans, pigeon pea±soybean (1:1)–cowpea, soybean–wheat–groundnut, groundnut–sorghum–sesame, maize–cabbage–fallow, soybean–wheat–green gram, maize–wheat–sesame, Bt cotton–groundnut, sugarcane±onion (1:2) and sugarcane (sole) replicated
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Morales, Adriana, Miguel J. Cervantes, Alan Valle-Fimbres, et al. "197 Body temperature of pigs exposed to heat stress conditions: effect of dietary protein level." Journal of Animal Science 97, Supplement_2 (2019): 111–12. http://dx.doi.org/10.1093/jas/skz122.197.

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Abstract Heat stress (HS) reduces feed intake and increases body temperature (BT) in pigs. Increased dietary protein content may correct HS-related reduced amino acid intake, but it may further increase BT. The effect of dietary protein level on BT of HS pigs was analyzed with 9-ileal cannulated pigs (61.7 ± 2.7 kg BW). A thermometer set to register BT at 5-min intervals was implanted into the ileum. There were two treatments: low-protein (10.8%) wheat-free Lys-Thr diet (LP); high-protein (21.6%), wheat-soybean meal diet. The study was conducted in two-10 d periods; d1-d7 for diet adaptation a
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Livingston, Michael J., Nicholas P. Storer, John W. Van Duyn, and George G. Kennedy. "Do Refuge Requirements for Biotechnology Crops Promote Economic Efficiency? Some Evidence for Bt Cotton." Journal of Agricultural and Applied Economics 39, no. 1 (2007): 171–85. http://dx.doi.org/10.1017/s1074070800022823.

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We examine producer behavior, resistance evolution, and returns under alternative refuge requirements in an eastern North Carolina region with multiple corn, cotton, and soybean fields infested by a mobile pest. Returns are highest, pyrethroid sprays occur least frequently, and pyrethroid resistance evolution is delayed most effectively with no refuge requirement. Complying with the current 20% refuge requirement costs the producer $8.67 per cotton acre, or $34.21 per non-transgenic insecticidal (Bt) cotton acre. Returns are highest under each refuge requirement when one-toxin Bt cotton is not
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Carrière, Yves, Zachary Brown, Serkan Aglasan, et al. "Crop rotation mitigates impacts of corn rootworm resistance to transgenic Bt corn." Proceedings of the National Academy of Sciences 117, no. 31 (2020): 18385–92. http://dx.doi.org/10.1073/pnas.2003604117.

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Transgenic crops that produce insecticidal proteins fromBacillus thuringiensis(Bt) can suppress pests and reduce insecticide sprays, but their efficacy is reduced when pests evolve resistance. Although farmers plant refuges of non-Bt host plants to delay pest resistance, this tactic has not been sufficient against the western corn rootworm,Diabrotica virgifera virgifera. In the United States, some populations of this devastating pest have rapidly evolved practical resistance to Cry3 toxins and Cry34/35Ab, the only Bt toxins in commercially available corn that kill rootworms. Here, we analyzed
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Yu, Huilin, Jörg Romeis, Yunhe Li, Xiangju Li, and Kongming Wu. "Acquisition of Cry1Ac Protein by Non-Target Arthropods in Bt Soybean Fields." PLoS ONE 9, no. 8 (2014): e103973. http://dx.doi.org/10.1371/journal.pone.0103973.

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Formentini, Aline Carraro, Daniel Ricardo Sosa-Gómez, Silvana Vieira de Paula-Moraes, Neiva Monteiro de Barros, and Alexandre Specht. "Lepidoptera (Insecta) associated with soybean in Argentina, Brazil, Chile and Uruguay." Ciência Rural 45, no. 12 (2015): 2113–20. http://dx.doi.org/10.1590/0103-8478cr20141258.

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ABSTRACT: The present research updates the systematic position and nomenclature of Lepidoptera associated with soybean crops in Argentina, Brazil, Chile and Uruguay. Scientific literature lists 69 species of Lepidoptera feeding on soybean plants. These species are representatives of the Superfamilies Noctuoidea (31), Pyraloidea (13), Hesperioidea (12), Tortricoidea (5), Geometroidea (5), and Bombycoidea (3). Diversity of Lepidoptera associated to crop, injury in different parts of the plant, and changes in species composition are discussed considering the changes in plant disease management, i
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Mascarenhas, R. N., D. J. Boethel, B. R. Leonard, M. L. Boyd, and C. G. Clemens. "Resistance Monitoring to Bacillus thuringiensis Insecticides for Soybean Loopers (Lepidoptera: Noctuidae) Collected from Soybean and Transgenic Bt-Cotton." Journal of Economic Entomology 91, no. 5 (1998): 1044–50. http://dx.doi.org/10.1093/jee/91.5.1044.

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Morales, Adriana, J. Alan Valle, Gilberto Castillo, et al. "The dietary protein content slightly affects the body temperature of growing pigs exposed to heat stress." Translational Animal Science 3, no. 4 (2019): 1326–34. http://dx.doi.org/10.1093/tas/txz143.

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Abstract: Heat stress (HS) increases body temperature (BT) and reduces feed intake in pigs. Increasing the dietary protein content may correct the reduced amino acid intake provoked by HS, but it may further increase BT. The effect of dietary protein level on BT of HS pigs was analyzed with nine ileal cannulated pigs (61.7 ± 2.5 kg body weight). A thermometer set to register BT at 5-min intervals was implanted into the ileum. There were two treatments: low-protein (10.8%) wheat-free-amino acid diet (LP); high-protein (21.6%), wheat-soybean-meal diet (HP). The study was conducted in two 10-d pe
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Paulo, Rogério Beltramin da Fonseca, Gino Fernandes Marcos, Justiniano Wagner, Hiroito Cavada Leonardo, Leila Tigre Pereira Viana Cácia, and Alfredo Neto da Silva João. "Spatial distribution of adults and nymphs of stink bug, Edessa meditabunda (Fabricius, 1974) (Hemiptera: Pentatomidae) on soybean Bt and non-Bt." African Journal of Agricultural Research 12, no. 40 (2017): 3013–23. http://dx.doi.org/10.5897/ajar2014.8723.

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Trejo, Adriana Morales, Fernanda González, Hugo Bernal, Miguel Cervantes, Caroline Gonzalez-Vega, and John K. Htoo. "PSIX-26 Effect of supplemental Arg on respiration rate and body temperature of pigs exposed to heat stress." Journal of Animal Science 97, Supplement_3 (2019): 351. http://dx.doi.org/10.1093/jas/skz258.699.

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Abstract Heat stress (HS) reduces feed intake and affects the well-being of pigs by increasing their body temperature (BT) and respiration rate (RR). Nitric oxide, an Arg metabolite, helps to dissipate body heat by stimulating blood vasodilation. Because reduced feed intake translates into decreased Arg consumption, the effect of supplementing Arg in the diet on BT and RR was analyzed using 8-ileal cannulated pigs (61.7±2.7 kg BW) exposed to HS. A thermometer set to register BT at 5-min intervals was implanted into the ileum. There were two treatments: control wheat-soybean meal plus free Lys-
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42

Marquardt, Paul T., and William G. Johnson. "Influence of Clethodim Application Timing on Control of Volunteer Corn in Soybean." Weed Technology 27, no. 4 (2013): 645–48. http://dx.doi.org/10.1614/wt-d-12-00188.1.

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Herbicide options for management of volunteer corn in soybean include a variety of acetyl CoA carboxylase-inhibiting herbicides, yet often, applications of acetyl CoA carboxylase herbicides are delayed until the weed is visible above the soybean canopy. Volunteer corn growing above the soybean canopy is a highly competitive weed, and herbicides applied at this point can kill the weed, yet soybean yield loss is still a concern. Our objective was to compare the effect of controlling various densities of volunteer corn growing in soybean EARLY (≤ 30 cm) versus LATE (≈ 90 cm) on percent control an
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Santos, Vilmar Bueno Dos, Luciana Barboza Silva, Eliane Carneiro, et al. "Comparative Study of <i>Helicoverpa armigera</i> (Hubner) (Lepidoptera: Noctuidae) Preference for Bt and Non-Bt Soybean Cultivars." American Journal of Plant Sciences 08, no. 10 (2017): 2483–500. http://dx.doi.org/10.4236/ajps.2017.810169.

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44

Aguilar-Palazuelos, Ernesto, José de Jesús Zazueta-Morales, Elizabeth Nabeshima Harumi, and Fernando Martínez-Bustos. "Optimization of extrusion process for production of nutritious pellets." Food Science and Technology 32, no. 1 (2012): 34–42. http://dx.doi.org/10.1590/s0101-20612012005000005.

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A blend of 50% Potato Starch (PS), 35% Quality Protein Maize (QPM), and 15% Soybean Meal (SM) were used in the preparation of expanded pellets utilizing a laboratory extruder with a 1.5 × 20.0 × 100.0 mm die-nozzle. The independent variables analyzed were Barrel Temperature (BT) (75-140 °C) and Feed Moisture (FM) (16-30%). The effect of extrusion variables was investigated in terms of Expansion Index (EI), apparent density (ApD), Penetration Force (PF) and Specific Mechanical Energy (SME), viscosity profiles, DSC, crystallinity by X-ray diffraction, and Scanning Electronic Microscopy (SEM). Th
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Beciu, Silviu, Toma Dinu, Mihaela Ghidurus, Raluca Ladaru, and Alexandru Calin. "Evolution of BT maize and HT soybean production and cost of coexistence in Romania." Journal of Biotechnology 208 (August 2015): S106. http://dx.doi.org/10.1016/j.jbiotec.2015.06.333.

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46

Akram, Muhammad Zeeshan, Sema Yaman, Hassan Jalal, Sibel Canoğulları Doğan, Sana Shahid, and Basit Shaukat Ali. "Effects of Feeding Genetically Modified Crops to Domestic Animals: A Review." Turkish Journal of Agriculture - Food Science and Technology 7, sp1 (2019): 110. http://dx.doi.org/10.24925/turjaf.v7isp1.110-118.2773.

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Genetically modified (GM) crops are being planted at large scale worldwide. In most of the countries, GM crops are processed into livestock feed. The land is used for cultivation of GM plants has been increased in recent years; in 2012 GM plants were grown on over 170 million hectares in 28 countries by 17.3 million farmers and extended to 185.1 million hectors in 2016 worldwide. GM plants have been used as feed for animals and the number of studies has proved their safety for animal and public health. This paper reviews the possible effects of GM crops on livestock, poultry, and aquatic anima
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47

Smith, John F., Randall G. Luttrell, and Jeremy K. Greene. "Seasonal Abundance of Stink Bugs (Heteroptera: Pentatomidae) and Other Polyphagous Species in a Multi-Crop Environment in South Arkansas." Journal of Entomological Science 43, no. 1 (2008): 1–12. http://dx.doi.org/10.18474/0749-8004-43.1.1.

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A 3-yr study was conducted to determine seasonal abundance of major pentatomid, noctuid, and mirid pests in a multicrop environment in south Arkansas. Replicated field plots (~0.1 ha) containing cotton, Gossypium hirsutum (L.), genetically engineered to express the Cry 1Ac toxin of Bacillus thuringiensis (Bt), nonBt cotton, Bt corn, Zea mays (L.), genetically engineered to express the Cry 1Ab toxin of B. thuringiensis, nonBt corn, maturity group (MG) III, IV, V, and VI soybean, Glycine max (L.) Merrill, and grain sorghum, Sorghum bicolor (L.) Moench, were planted each year. Crop preferences of
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White, C. A., B. R. Leonard, D. J. Boethel, J. D. Thomas, and A. T. Wier. "Soybean Looper Control in the Macon Ridge Region of Louisiana with Selected Bt Insecticides, 1993." Arthropod Management Tests 19, no. 1 (1994): 273. http://dx.doi.org/10.1093/amt/19.1.273.

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49

Coelho, M., A. F. Godoy, Y. A. Baptista, et al. "Assessing Soybean Genotypes for Resistance to Helicoverpa armigera (Lepidoptera: Noctuidae)." Journal of Economic Entomology 113, no. 1 (2019): 471–81. http://dx.doi.org/10.1093/jee/toz269.

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Abstract Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) is an important pest capable of colonizing several species of cultivated plants, including soybean [Glycine max (L.) Merrill]. The primary management strategy for this insect is chemical control and adoption of Bt plants. However, alternative environmentally friendly strategies should be investigated and adopted as available for sustainable management of this insect pest. One potential underutilized method for insect control is plant resistance. The objective of this study was to categorize resistance (antixenosis and antibiosis)
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50

Marquardt, P., C. Krupke, and W. G. Johnson. "Competition of Transgenic Volunteer Corn with Soybean and the Effect on Western Corn Rootworm Emergence." Weed Science 60, no. 2 (2012): 193–98. http://dx.doi.org/10.1614/ws-d-11-00133.1.

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Glyphosate-resistant (GR) volunteer corn has emerged as a problematic weed in corn:soybean rotational systems, partly because of the rapid increase in adoption of corn hybrids that contain traits for both glyphosate and insect resistance. Volunteer GR corn can decrease soybean yields. The objectives of this study were to quantify the impact of volunteer corn on soybean growth and yield and determine how volunteer corn densities affect western corn rootworm (WCR) emergence. Volunteer corn seed was hand-planted at targeted densities of 0.5, 2, 4, 8, 12, and 16 seeds m−2at soybean planting and 21
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