Publications by authors named "Antonio Felix Costa"

Article Synopsis
  • The black aphid (Aphis craccivora) is a harmful pest that can cause major damage to various crops, and entomopathogenic fungi could be an effective control method.
  • This study tested 27 Fusarium isolates, finding that F. pernambucanum proved to be the most effective, with the shortest lethal times for the aphids.
  • While the results are promising, further research is necessary to assess the safety and environmental effects of using Fusarium fungi in agricultural practices.
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The composition of pumpkin seeds includes bioactive compounds, proteins, polyunsaturated fatty acids, and dietary fibers. Thus, the objective of this research was to develop and evaluate the nutritional and quality standard of beef burgers supplemented with pumpkin seeds () added in different proportions. To process the pumpkin seed flour (PSF), the seeds were sanitized, dried in an oven, crushed, and sieved.

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Helicases, motor proteins present in both prokaryotes and eukaryotes, play a direct role in various steps of RNA metabolism. Specifically, SF2 RNA helicases, a subset of the DEAD-box family, are essential players in plant developmental processes and responses to biotic and abiotic stresses. Despite this, information on this family in the physic nut ( L.

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The genus Vigna (Leguminosae) comprises about 150 species grouped into five subgenera. The present study aimed to improve the understanding of karyotype diversity and evolution in Vigna, using new and previously published data through different cytogenetic and DNA content approaches. In the Vigna subgenera, we observed a random distribution of rDNA patterns.

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Inversions and translocations are the major chromosomal rearrangements involved in Vigna subgenera evolution, being Vigna vexillata the most divergent species. Centromeric repositioning seems to be frequent within the genus. Oligonucleotide-based fluorescence in situ hybridization (Oligo-FISH) provides a powerful chromosome identification system for inferring plant chromosomal evolution.

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(CABMV) and (CPSMV) threaten cowpea commercial production. This study aimed to analyze Conserved Transcriptional Signatures (CTS) in cowpea's genotypes that are resistant to these viruses. CTS covered up- (UR) or down-regulated (DR) cowpea transcripts in response to CABMV and CPSMV mechanical inoculations.

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Article Synopsis
  • The productivity of beans in the Agreste-Sertão region is impacted by various environmental conditions, highlighting the need for stable genotypes to address genotype-environment interactions (GxE).
  • The research focused on evaluating the adaptability and stability of carioca bean pre-cultivars across three municipalities in Pernambuco using the Bayesian AMMI model (BAMMI), which proved to have superior predictive ability compared to traditional methods.
  • The BRS Notável cultivar was identified as particularly notable for its adaptability and stability, demonstrating the benefits of the GxE interaction, particularly when analyzed through the BAMMI model.
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Cytogenomic resources have accelerated synteny and chromosome evolution studies in plant species, including legumes. Here, we established the first cytogenetic map of V. angularis (Va, subgenus Ceratotropis) and compared this new map with those of V.

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Fusarium incarnatum-equiseti species complex (FIESC) is considered as one of the richest insecticolous species. Fusarium species synthesize toxic secondary metabolites that are not fully understood. Mycotoxin production and pathogenicity on germinating seeds, seedlings, and leaves must be carefully studied for the use of Fusarium species in the biological control of insect pests.

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Soil microbial communities represent the largest biodiversity on Earth, holding an important role in promoting plant growth and productivity. However, the knowledge about how soil factors modulate the bacteria community structure and distribution in tropical regions remain poorly understood, mainly in different cowpea producing ecoregions belonging to Northeastern Brazil. This study addressed the bacterial community along three different ecoregions (Mata, Sertão, and Agreste) through the16S rRNA gene sequencing.

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Based on morphological and molecular phylogenetic markers and the fertility of sexual crosses, two novel species of Fusarium associated with Dactylopius opuntiae (Hemiptera: Dactylopiidae) and Aleurocanthus woglumi (Hemiptera: Aleyrodidae) from northeastern Brazil are described as Fusarium caatingaense and F. pernambucanum. Partial sequences of five loci were generated for 29 entomopathogenic Fusarium isolates.

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Thaumatin-like proteins (TLPs) are a highly complex protein family associated with host defense and developmental processes in plants, animals, and fungi. They are highly diverse in angiosperms, for which they are classified as the PR-5 (Pathogenesis-Related-5) protein family. In plants, TLPs have a variety of properties associated with their structural diversity.

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Article Synopsis
  • A new genomovirus has been discovered in three common bean plants in Brazil.
  • The virus has a circular genome consisting of 2,220 nucleotides and includes three major open reading frames.
  • It shows 80.7% genome-wide pairwise identity to a genomovirus found in Tongan fruit bat guano.
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Cowpea (Vigna unguiculata) is an annual legume grown in tropical and subtropical regions, which is economically relevant due to high protein content in dried beans, green pods, and leaves. In this work, a comparative cytogenetic study between V. unguiculata and Phaseolus vulgaris (common bean) was conducted using BAC-FISH.

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The objective of this study was to evaluate the survival of cowpea during bacterial colonization and evaluate the interrelationship of the Bradyrhizobium sp. and plant growth-promoting bacteria (PGPB) as a potential method for optimizing symbiotic performance and cowpea development. Two experiments using the model legume cowpea cv.

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