Publications by authors named "R Monnerat"

Microorganisms with multiple ecological functions can be a useful biotechnological resource in integrated pest- and disease-management programs. This work aimed to investigate the potential endophytic and virulent effects of a strain of on organic cultivation in Brazil. Specifically, the strain's ability to establish itself as an endophyte in common bean, soybean, and sunflower plants when inoculated via seed was evaluated.

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The identification of antifungal compounds produced by microorganisms is crucial in the context of sustainable agriculture. Bacteria of the genus Bacillus have a broad spectrum of action that can influence plant growth and control pests, vectors of public health relevance and phytopathogens. Lipopeptides are the main compounds related to the biological control of several pathogen species.

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Bacillus thuringiensis is a Gram-positive aerobic bacterium and the most used biopesticide worldwide. Given the importance of B. thuringiensis strain characterization for the development of new bioinsecticides or transgenic events and the identification and classification of new B.

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The usage of microorganisms as biocontrol agents and biofertilizers has been recommended and recognized as an ecologically correct alternative to maintaining the productivity and safety of crops. Thus, the objectives of this work were to characterize twelve strains belonging to Invertebrate Bacteria Collection of Embrapa Genetic Resources and Biotechnology by molecular, morphological, and biochemical methods and to evaluate the pathogenicity of these strains against pests and diseases of agricultural interest. The morphological characteristic of the strains was performed according to the principles of Bergy's Manual of Systematic Bacteriology.

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Article Synopsis
  • - The sugarcane giant borer is a major pest that leads to significant losses in sugarcane crops, and traditional control methods like chemicals and manual efforts are largely ineffective.
  • - In this study, researchers evaluated the toxicity of four Cry toxins (Cry1A and Cry2Aa) on the borer's larvae, finding that Cry1Ac was the most effective, showing significantly higher activity compared to the other toxins.
  • - Molecular analysis identified potential interactions between Cry1Ac and specific receptors, suggesting that particular amino acids enhance the toxin's effectiveness, which could inform the development of genetically modified sugarcane resistant to this pest.
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