Publications by authors named "Gabriel Sergio Costa Alves"

Jatropha curcas is an oilseed crop with biorefinery applications. Whilst cake generated following oil extraction offers potential as a protein source for animal feed, inactivation of toxic phorbol esters present in the material is necessary. Pleurotus pulmonarius is a detoxifying agent for jatropha cake with additional potential as animal feed, edible mushroom and for enzyme production.

View Article and Find Full Text PDF
Article Synopsis
  • * In a study utilizing Illumina HiSeq 2500 sequencing, researchers identified 202 conserved miRNAs and 24 novel miRNAs in the resistant Calcutta 4 banana variety, many of which are linked to immune responses in plants.
  • * The analysis showed a negative correlation in the expression of selected miRNAs and their target genes involved in defense mechanisms, providing insights for potential genetic engineering strategies to combat the Sigatoka disease in bananas.
View Article and Find Full Text PDF

Banana ( spp.), which is one of the world's most popular and most traded fruits, is highly susceptible to pests and diseases. , responsible for Sigatoka leaf spot disease, is a principal fungal pathogen of spp.

View Article and Find Full Text PDF
Article Synopsis
  • Nucleotide-binding site leucine-rich repeat genes (NLRs) are crucial for plant disease resistance, but identifying them in plant genomes is difficult due to their diverse structure and arrangement.* -
  • A study identified 1311 NLR loci in one coffee species, 927 in another, and 1079 in a third, revealing a high detection sensitivity of over 99% using the NLR-Annotator tool and showing that these loci are mostly clustered across chromosomes.* -
  • The research also identified shared orthologous NLRs among coffee, tomato, and potato species, providing insights into their evolutionary history and functionality, which can aid in developing disease-resistant coffee varieties.*
View Article and Find Full Text PDF

Amphibians secrete a complex array of molecules that shape their interactions with coinhabiting microorganisms and macroscopic predators. Glycans are a rapidly evolving and complex class of biomolecules implicated in intrinsic and extrinsic recognition events. Despite the numerous studies aiming at the biochemical characterization of anuran skin secretions, little is known about protein-linked oligosaccharides, their synthesis pathways, and their homing secreted glycoproteins.

View Article and Find Full Text PDF
Article Synopsis
  • - Biological nitrogen fixation (BNF) is crucial for providing nitrogen in tropical savannas, especially in Brazil's Cerrado, which has a conservative nitrogen cycle.
  • - A long-term study explored how seasonal rainfall and nutrient additions (control, liming, nitrogen, nitrogen + phosphorus, phosphorus) affected the abundance of N-fixing bacteria related to Bradyrhizobium.
  • - Results showed that as the seasons changed from rainy to dry, the amount of nitrogen-fixing genes decreased, particularly in the liming treatment, indicating that various factors influence nitrogen-fixation in these nutrient-poor and seasonally dry areas.
View Article and Find Full Text PDF

Despite the importance of the DREB1D gene (also known as CBF4) in plant responses to water deficit and cold stress, studies analysing its regulation by transgenic approaches are lacking. In the current work, a functional study of three CcDREB1D promoter haplotypes (named HP15, HP16 and HP17) isolated from drought-tolerant and drought-sensitive clones of Coffea canephora was carried out in plants of C. arabica stably transformed by Agrobacterium tumefaciens by analysing their ability to regulate the expression of the uidA reporter gene in response to water deficit mimicked by polyethylene glycol (-2.

View Article and Find Full Text PDF

Background: Plants are constantly exposed to evolving pathogens and pests, with crop losses representing a considerable threat to global food security. As pathogen evolution can overcome disease resistance that is conferred by individual plant resistance genes, an enhanced understanding of the plant immune system is necessary for the long-term development of effective disease management strategies. Current research is rapidly advancing our understanding of the plant innate immune system, with this multidisciplinary subject area reflected in the content of the 18 papers in this Special Issue.

View Article and Find Full Text PDF

Background And Aims: Endoparasitic root-knot nematodes (RKNs) ( Meloidogyne spp.) cause considerable losses in banana ( Musa spp.), with Meloidogyne incognita a predominant species in Cavendish sub-group bananas.

View Article and Find Full Text PDF