Relevant bibliographies by topics / Biocontrollers

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters

Academic literature on the topic 'Biocontrollers'

Author: Grafiati
Published: 19 February 2023

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Journal articles on the topic "Biocontrollers"

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Friedlander, Michael, Nora Weintraub, Arik Freedman, Joni Sheer, Zvi Snovsky, Jim Shapiro, and George Wm Kissil. "Fish as potential biocontrollers of Gracilaria (Rhodophyta) culture." Aquaculture 145, no. 1-4 (October 1996): 113–18. http://dx.doi.org/10.1016/s0044-8486(96)01350-6.

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Lemes, Camila G. C., Isabella F. Cordeiro, Camila H. de Paula, Ana K. Silva, Flávio F. do Carmo, Luciana H. Y. Kamino, Flávia M. S. Carvalho, Juan C. Caicedo, Jesus A. Ferro, and Leandro M. Moreira. "Potential Bioinoculants for Sustainable Agriculture Prospected from Ferruginous Caves of the Iron Quadrangle/Brazil." Sustainability 13, no. 16 (August 20, 2021): 9354. http://dx.doi.org/10.3390/su13169354.

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Biocontrol and plant growth-promoting bacteria (PGPB) are important agricultural bioinoculants. This study aimed to prospect new potential bioinoculants for a more sustainable agriculture from ferruginous caves of the Brazilian Iron Quadrangle. Culturable bacteria, from seven caves and one canga soil sample, were evaluated for biocontroller activity of the phytopathogens Xanthomonas citri subsp. Citri—Xcc306 (citrus canker), Fusarium oxysporum—Fo (fusariosis), and Colletotrichum lindemuthianum—Cl89 (bean anthracnose). The ability of the superior candidates to solubilize inorganic phosphate, fix nitrogen, and produce hydrolytic enzymes and siderophores was then analyzed. Out of 563 isolates, 47 inhibited the growth of Xcc306 in vitro, of which 9 reduced citrus canker up to 68% when co-inoculated with the pathogen on host plants. Twenty of the 47 inhibited Fo growth directly by 51–73%, and 15 indirectly by 75–81%. These 15 inhibited Cl89 growth in vitro (up to 93% directly and 100% indirectly), fixed nitrogen, produced proteases and siderophores, showed motility ability, produced biofilm, and all but one solubilized inorganic phosphate. Therefore, 15 (2.66%) bacterial isolates, from the genera Serratia, Nissabacter, and Dickeya, act simultaneously as biocontrollers and PGPBs, and could be important candidates for future investigations in planta as an alternative to minimize the use of pesticides and chemical fertilizers through sustainable agricultural management practices.
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Ramirez, Cecilia, Alverlan da Silva Araújo, Gilson Moura Filho, Fernando da Silva Rocha, Marylia Gabriella Silva Costa, and Maria de Fatima Silva Muniz. "Biocontrollers in the management of yam dry rot nematodes." Diversitas Journal 6, no. 1 (January 24, 2021): 24–35. http://dx.doi.org/10.17648/diversitas-journal-v6i1-1572.

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ABSTRACT: One of the main diseases affecting yam crops (Dioscorea spp.) in Brazil is the dry rot caused by Scutellonema bradys, Pratylenchus brachyurus and P. coffeae nematodes. The use of biological control agents is an auspicious procedure which has been tested in order to reduce losses by pathogens. The objective of this work was to evaluate the nematicidal activity in vitro and in vivo of commercial biological products on yam dry rot nematodes. Products based on Trichoderma harzianum (2.0 x 109 conidia mL-1) at dosages of 1.5 and 2.0 L 200 L-1 of water; Bacillus subtilis 20% - 1.0 x 1011 cfu g-1 + B. licheniformis 20% - 1.0 x 1011 cfu g-1 at 100 and 150 g 100 L-1; B. subtilis 200 g kg-1 + B. licheniformis 200 g kg-1 at 130 and 200 g 100 L-1; combination of rhizobacteria including Bacillus spp. and organic carbon at 5L and 7L 100 L-1; and the control (distilled water), were tested in in vitro assays on S. bradys or Pratylenchus sp. In experiments performed under greenhouse conditions, healthy seed tubers were planted in sterilized soil and thirty days later the soil was infested with a suspension of 1,000 specimens of a mixed population of S. bradys and P. coffeae. Then, after 30 days products based on B. subtilis 20% + B. licheniformis 20% - 150 g 100 L-1; T. harzianum 2 L 200 L-1 and rhizobacteria + organic carbon 7 L 100 L-1, at 100 mL per pot, were applied to the soil. Three months after planting, the percentage of sprouting of the seed tubers was evaluated and in the fifth month, the nematode population densities were determined. The sprouting of seed tubers was of 100% in all treatments. Bacillus subtilis 20% + B. licheniformis 20% and T. harzianum caused 89% and 61% mortality in S. bradys respectively, at the highest concentrations. In specimens of Pratylenchus sp., rhizobacteria + organic carbon exhibited 51% and 45% mortality at higher and lower concentrations, respectively. Under greenhouse conditions, B. subtilis 20% + B. licheniformis 20% and rhizobacteria + organic carbon were more effective in reducing nematode population densities, compared to the control. KEYWORDS: Dioscorea spp.; Scutellonema bradys; Pratylenchus sp.
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Quispe-Quispe, Edwin, Anthony A. Moreira-Morrillo, and Felipe Rafael Garcés Fiallos. "A review about biocontrollers of Phytophthora capsici and its impact on Capsicum plants: A perspective from outside to inside the plant." Scientia Agropecuaria 13, no. 3 (September 21, 2022): 275–89. http://dx.doi.org/10.17268/sci.agropecu.2022.025.

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Phytophthora capsici is an oomycete that causes various symptoms, such as root, neck, stem, fruit rot, and leaf blight, in different plant species, including the genus Capsicum. One of the tools to counteract this biotic problem, which may be more profitable and respectful to the environment in the long term, is using biocontrollers such as Bacillus, Pseudomonas, Streptomyces (bacteria), and Trichoderma (fungus). It seems that each of these microorganisms has different mechanisms that allow them to inhibit and reduce the growth of P. capsici, negatively affecting the development of sporangia, germination and motility of zoospores, and expansion of germ tube. Although this direct biocontrol action on the phytopathogen correlates with the reduction of symptoms in Capsicum plants or other plant species, this would also involve the activation of defense responses in plants against P. capsici induced by microorganisms. The activity of several enzymes related to the isoflavonoid pathways and reactive oxygen species, as well as the expression of different genes that encode proteins related to pathogenesis and other proteins that can activate the jasmonic acid, salicylic acid, or ethylene signaling pathways. Despite the few existing works related to the biochemical and molecular interaction of Capsicum–P. capsici–biocontroller, in this review, we outlined and elucidated the possible effects and metabolic pathways related to this tripartite pathosystem.
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Pereira, Guillermo, Nicole Roa, Diyanira Castillo-Novales, César Arriagada, Héctor Herrera, Marco Molina-Montenegro, and Cristian Atala. "Mycorrhizal fungi isolated from Chilean orchids as biocontrollers of the pathogen Rhizoctonia solani." Gayana. Botánica 78, no. 2 (December 2021): 113–20. http://dx.doi.org/10.4067/s0717-66432021000200113.

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Vejarano, Ricardo, and Angie Gil-Calderón. "Commercially Available Non-Saccharomyces Yeasts for Winemaking: Current Market, Advantages over Saccharomyces, Biocompatibility, and Safety." Fermentation 7, no. 3 (August 28, 2021): 171. http://dx.doi.org/10.3390/fermentation7030171.

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About 42 commercial products based on non-Saccharomyces yeasts are estimated as available on the market, being mostly pure cultures (79%), with a predominance of Torulaspora delbrueckii, Lachancea thermotolerans, and Metschnikowia pulcherrima. The others are multi-starter consortia that include non-Saccharomyces/Saccharomyces mixtures or only non-Saccharomyces species. Several commercial yeasts have shown adequate biocompatibility with S. cerevisiae in mixed fermentations, allowing an increased contribution of metabolites of oenological interest, such as glycerol, esters, higher alcohols, acids, thiols, and terpenes, among others, in addition to a lower production of acetic acid, volatile phenols, biogenic amines, or urea. Multi-starter inoculations are also reviewed here, which show adequate biocompatibility and synergy between species. In certain cases, the aromatic profile of wines based on grape varieties considered neutral is improved. In addition, several yeasts show the capacity as biocontrollers against contaminating microorganisms. The studies conducted to date demonstrate the potential of these yeasts to improve the properties of wine as an alternative and complement to the traditional S. cerevisiae.
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Melo R., Aslenis, Pedro Ariza, Sofía Lissbrant, and Adriana Tofiño. "Evaluation of agrochemicals and bioinputs for sustainable bean management on the Caribbean coast of Colombia." Agronomía Colombiana 33, no. 2 (May 1, 2015): 203–11. http://dx.doi.org/10.15446/agron.colomb.v33n2.49858.

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The sustainable expansion of bean cultivations requires technologies that do not limit their phyto-recovering properties. Therefore, the objective of this study was to propose agronomic management of conservation for bean cultivation considering the microbiological characteristics of two mega-environments of the Colombian Caribbean coast and the compatibility between agrochemicals and bioinputs. The methodology included rhizospheric microbe population counts, identification of phytopathogenic fungi in plant tissues and soils, compatibility studies of pesticides with biocontrollers, and determination of residual contents of pesticides in bean seeds. The microbial populations corresponded to those previously registered for the lower tropics, but with quantitative differences in the genera. Phytophthora, Colletotrichum and Fusarium were registered in the humid Caribbean, while Colletotrichum and Curvularia affected crops in the dry Caribbean. The Beauveria bioinput was not compatible with the evaluated agrochemicals, while Trichoderma was compatible with chlorpyrifos, thiabendazole and oxycarboxin. Metarhizium was compatible with glyphosate and oxycarboxin at 10% of the recommended dose. Lindane residues were found in the beans harvested at three of the studied locations. The combined use of agrochemicals and bioinputs on bean crops is feasible as long as the time of application of the latter is made according to the half-life of the chemical and the organic matter content of the soil is increased.
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Hong-Thao, Phan Thi, Nguyen Vu Mai-Linh, Nguyen Thi Hong-Lien, and Nguyen Van Hieu. "Biological Characteristics and Antimicrobial Activity of EndophyticStreptomycessp. TQR12-4 Isolated from EliteCitrus nobilisCultivar Ham Yen of Vietnam." International Journal of Microbiology 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/7207818.

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Ham Yen orange (Citrus nobilisLour) is the highly valuable commercial fruit of Vietnam. With the blooming of fruit production and farming area, this specialty crop is facing threats from several serious diseases; therefore the search for new effective biocontrollers is required to prevent the existing excessive use of fertilizers and plant protection chemicals. Endophytic actinomycetes are of great scientific interest due to their high potential of application in agriculture and pharmaceutical research. In this work, endophytic actinomycetes were isolated from a native orange species of Northeast mountainous province Tuyen Quang. Among 49 isolates obtained, the isolate TQR12-4 strongly inhibited test pathogensColletotrichum truncatum,Geotrichum candidum,Fusarium oxysporum, andF. udum. This isolate gave comparatively high biomass yields on different substrates, for example, carboxy methyl cellulose, starch, protein, and chitin, within a wide range of temperature from 15 to 45°C and pH from 4 to 10. Sequence analysis of 16S rDNA gene showed that TQR12-4 shared 99% similarity toStreptomyces prasinopilosus; however, it slightly differed from the latter in spore morphology and hence was named asStreptomycessp. TQR12-4. A thermostable antifungal substance of nonpeptide nature produced byStreptomycessp. TQR12-4 had MIC againstFusarium udumof 100 μg/mL and 400 μg/mL respective to extract fractionsX4andX5.
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Consolo, Verónica Fabiana, Cecilia Inés Mónaco, Cristina Alicia Cordo, and Graciela Lidia Salerno. "Characterization of novel Trichoderma spp. isolates as a search for effective biocontrollers of fungal diseases of economically important crops in Argentina." World Journal of Microbiology and Biotechnology 28, no. 4 (November 17, 2011): 1389–98. http://dx.doi.org/10.1007/s11274-011-0938-5.

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Rodhe, Henning. "Biocontrolled thermostasis involving the sulfur cycle." Climatic Change 8, no. 1 (February 1986): 91–92. http://dx.doi.org/10.1007/bf00158971.

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Dissertations / Theses on the topic "Biocontrollers"

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(9829109), Donna Rayner. "Spiders in central Queensland mango orchards: Diversity, diel activity and impact of pesticides." Thesis, 2000. https://figshare.com/articles/thesis/Spiders_in_central_Queensland_mango_orchards_Diversity_diel_activity_and_impact_of_pesticides/13424552.

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Spiders are naturally occurring predators of insects in agroecosystems. The use of broad spectrum pesticides in agriculture is likely to disrupted spider communities and have a negative impact on their role as biocontrollers. The overall abundance, the species richness, diversity and guild structure of spiders in tropical mango orchards in central Queensland were investigated in this study. Experiments were performed to assess the potential of spiders as natural predators to pest insects in mango orchards. The effects of pesticides on the spider communities were assessed to establish the extent to which the communities were disrupted and the extent of recovery from this type of disturbance. The short term (acute) and long term (chronic) effects were investigated. The spiders in unsprayed mango orchards were relatively high in abundance, species richness and species diversity. Spiders were present in significant numbers at all sampling times,both day and at night, and during all seasons. The results suggest that spiders do not capture large numbers of prey. However spider exhibit a diversity of capturing techniques so that they capture a variety of insects. The most common guild was the orb-weavers. The spider abundance and diversity four days after spraying with methidathion suggested that recovery of spider after disruption such as the use of pesticides' occurs quickly. Presumably this recovery occurs due to spiders moving into the orchard from surrounding bush land. The long term use of pesticide does appear to disrupt the community and as evidenced by decreases in the abundance, species richness and diversity of spiders. While it is unlikely that pesticide usage will be eliminated in most commercial mango orchards, this study demonstrates that spiders are potentially important biocontrollers and that they are adversely affected by pesticide use. In the longer term, it will be desirable to develop IPM strategies to minimise pesticide use and maximise the role of spiders as biocontrollers. Such strategies will depend on studies such as this one and extensions of it.
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Book chapters on the topic "Biocontrollers"

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Silva, Izael Oliveira, Edna Peixoto da Rocha Amorim, Nelson Augusto Nascimento Junior, Juliana Paiva Carnauba Ferreira de Araújo Neto, and Ianês Vieira de Lima. "Molecular identification of isolates of Trichoderma spp as biocontroller of Fusarium falciform, causal agent of root rot of table manioc (Manihot esculenta Crantz) var. rosinha in the State of Alagoas/Brazil." In Themes focused on interdisciplinarity and sustainable development worldwide, 1224–123. Seven Events, 2022. http://dx.doi.org/10.56238/tfisdwv1-109.

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