Publications by authors named "Vanessa Galli"

Solid-state fermentation (SSF) is a type of fermentation process with potential to use agro-industrial by-products as a carbon source. Nonetheless, there are few studies evaluating SSF compared to submerged fermentation (SmF) to produce polyhydroxyalkanoates (PHAs). Different methodologies are available associating the two processes.

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This study aimed to determine whether the addition of Ilex paraguariensis residue to the basal diet of laying hens improves bird health, production, fatty acids, egg quality, and transfer of chlorogenic acids to the egg. One hundred twenty birds of the Hy-line lineage were used, divided into five groups with six replicates and four birds per replicate, as follows: T0 (control group, without IPPR supplementation), T0.5 (basal diet plus 0.

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In order to develop a more sensitive and reliable method for detection of serum antibodies against infection in pigs, six recombinant proteins of (P102, P95, P46, P97 like, Lppt, and hypothetical P987) were used for the standardization of an indirect enzyme-linked immunosorbent assay (ELISA). The proteins were evaluated against 50 sera of the specific pathogen-free and 50 sera of pigs with lesions suggestive of infection. The sensitivity was 88%, 86%, 78%, 74%, 66%, and 60% for the proteins P102, P95, P46, P97 like, Lppt, and hypothetical protein P987, respectively.

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A freeze-dried extract from the bark of mate branches (BMBE) containing high chlorogenic acids (CGA) content (30 g 100 g) was produced. Then, chia oil was mixed with 7.5% BMBE and sonicated for 0, 10, and 20 min.

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Ilex paraguariensis is a perennial plant used in the production of mate tea, "chimarrão" and "tererê," cosmetics, and other food products. Its leaves are harvested every 12 or 18 months. Approximately 2 to 5 tons of residue are generated per hectare during the harvest.

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Article Synopsis
  • - Calcium-dependent protein kinases (CDPKs) are important for plant growth, development, and stress responses; however, their specific roles in strawberries (Fragaria x ananassa) were not well understood before this study.
  • - The researchers identified nine new CDPK genes in strawberries, categorizing them into four groups based on their genetic structure and evolutionary relationships through RNA sequencing analysis.
  • - The study found that these CDPK genes show varying expression levels during fruit development and ripening, as well as in response to stresses like salt and drought, highlighting their potential for improving fruit nutrition and plant resilience.
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Italian ryegrass (; LOLMU) is one of the most troublesome weeds in temperate regions in the world. This weed species interfere with wheat, corn, rye, and oat, causing significant crop yield losses. This species has evolved glyphosate resistance, making it difficult to control.

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In this study, we compared the chemical composition of strawberry (Fragaria × ananassa) fruits that were ripened in vivo (attached to plant) to those ripened during postharvest storage. The effects of the application of abscisic acid (ABA) and sucrose on the postharvest ripening were also evaluated. The results suggested that the postharvest ripening process was dependent on the signal triggered by ABA and differed from in vivo ripening, resulting in fruits with altered chemical composition and firmness.

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Background: Plants activate defense mechanisms to cope with adverse environmental conditions, leading to the accumulation and / or depletion of general and specialized metabolites. In this study, a multiplatform untargeted metabolomics strategy was employed to evaluate metabolic changes in strawberry fruit of cv. Camarosa grown under osmotic stress conditions.

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(hairy fleabane) is one of the most problematic and widespread glyphosate-resistant weeds in the world. This highly competitive weed species significantly interferes with crop growth and substantially decreases crop yield. Despite its agricultural importance, the molecular mechanisms of glyphosate resistance are still unknown.

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The aims of this study were to evaluate the presence of genes associated with adhesion (cadF), invasion (ciaB), and cytotoxin production (cdtA, cdtB, and cdtC) among Campylobacter jejuni isolates from a poultry slaughterhouse and to investigate the effect of different temperatures on the expression of these virulence-associated genes. A total of 88 C. jejuni isolates from cecum, liver, chicken carcasses, chilled water, and scalding water were submitted to PCR assay for detection of virulence genes.

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Strawberry (Fragaria ananassa Duch.) is an economically important fruit with a high demand owing to its good taste and medicinal properties. However, its cultivation is affected by various biotic and abiotic stresses.

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Article Synopsis
  • Strawberry crops are sensitive to osmotic stress from mild drought and salt, but their fruit yield remains unaffected by these conditions.
  • Experiencing mild drought and salt stress enhances the levels of beneficial compounds like phenolics, anthocyanins, and vitamin C in the strawberries, which boosts their antioxidant activity.
  • The study indicates that these improvements in fruit quality are linked to increased production of abscisic acid (ABA) and the activation of related genes, suggesting that ABA plays a key role in this process.
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  • Strawberry production is challenged by abiotic stresses, but understanding the molecular mechanisms of their stress response is crucial for improving their tolerance through genetic engineering.
  • The study evaluated seven reference genes for normalizing gene expression in strawberries under different stress conditions, using four software programs to ensure accuracy.
  • Results showed that DBP is the best reference gene under drought stress, while HISTH4 is stable under osmotic and salt stress, highlighting the importance of selecting appropriate reference genes to avoid misleading data in research.
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A multi-antigen chimera composed of three antigens of Mycoplasma hyopneumoniae (R1, P42, and NrdF) and the mucosal adjuvant Escherichia coli heat-labile enterotoxin B subunit (LTB) was constructed, and its antigenic and immunogenic properties were evaluated in mice and pigs. In addition, we compared the effect of the fusion and co-administration of these proteins in mice. Antibodies against each subunit recognized the chimeric protein.

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Maize, in addition to being the main staple food in many countries, is used in the production of hundreds of products. It is rich in compounds with potential benefits to health, such as carotenoids, phenolic compounds, vitamin E, and minerals that act as cofactors for antioxidant enzymes. Many of these compounds have been neglected thus far in the scientific literature.

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Article Synopsis
  • The study focuses on finding suitable reference genes for accurate gene expression analysis in lettuce, especially for real-time quantitative polymerase chain reaction (RT-qPCR) tests.
  • Seventeen candidate reference genes, including traditional and novel protein-coding genes and microRNAs (miRNAs), were evaluated for their stability under various stress conditions like drought and UV-C irradiation.
  • Results showed that novel protein-coding genes and specific miRNAs were more stable under certain stresses, highlighting the importance of selecting appropriate reference genes to avoid inaccurate findings in gene expression studies.
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MicroRNAs, or miRNAs, are endogenously encoded small RNAs that play a key role in diverse plant biological processes. Jatropha curcas L. has received significant attention as a potential oilseed crop for the production of renewable oil.

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Plant carotenoids have been implicated in preventing several age-related diseases, and they also provide vitamin A precursors; therefore, increasing the content of carotenoids in maize grains is of great interest. It is not well understood, however, how the carotenoid biosynthetic pathway is regulated. Fortunately, the maize germplasm exhibits a high degree of genetic diversity that can be exploited for this purpose.

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Article Synopsis
  • The study focuses on improving the extraction of RNA from different maize varieties to enhance vitamin A precursor levels, specifically targeting the HYD3 gene.
  • Traditional RNA isolation methods face challenges due to the presence of polysaccharides in maize, leading to low-quality RNA that is unsuitable for further analysis.
  • An adapted CTAB-based method was found to be superior, yielding high-quality RNA from 25 maize varieties, facilitating successful evaluation of HYD3 gene expression through RT-qPCR.
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The stability of candidate reference genes was evaluated in maize landrace varieties and during multiple grain developmental stages to evaluate the expression of carotenoid-related genes by RT-qPCR for application to maize biofortification. Vitamin A deficiency affects millions of children worldwide; therefore, increasing the content of vitamin A precursors in maize grains is of interest. The study of the expression of genes involved in the carotenoid biosynthetic pathway in maize grains has provided useful information for metabolic engineering approaches.

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Mycoplasma hyopneumoniae is the etiological agent of porcine enzootic pneumonia (EP), which is a respiratory disease responsible for huge economic losses in the pig industry worldwide. The commercially available vaccines provide only partial protection and are expensive. Thus, the development of alternatives for the prophylaxis of EP is critical for improving pig health.

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