Publications by authors named "Luiz C Federizzi"
The objective of this study was to evaluate whether the oxidative stress caused by aluminum (Al) toxicity is a symptom that can trigger root growth inhibition in oat genotype seedlings. Oat seedlings were grown in a nutrient solution (pH 4.0) with 0 and 370 μM Al.
View Article and Find Full Text PDFThe phytotoxic effects of aluminum and the mechanisms of genetically-based Al tolerance have been widely investigated, as reported in many papers and reviews. However, investigations on many Al-sensitive and Al-resistant species demonstrate that Al phytotoxicity and Al-resistance mechanisms are extremely complex phenomena. The objective of the present study was to analyze the effects of aluminum on the activity of antioxidant enzymes such as catalase (CAT), superoxide dismutase (SOD), and ascorbate peroxidase (APX).
View Article and Find Full Text PDFArticle Synopsis
- Genomic research in oats faces challenges due to limited shared genetic markers, leading this study to create over 2,000 new genetic markers using Diversity Array Technology (DArT) for oat improvement.
- Around 19,000 genomic clones were sourced from 60 oat varieties globally, resulting in a significant number of polymorphic markers being identified, with some linked to known gene sequences.
- The new markers enhanced genetic mapping and analysis of oat diversity, revealing important clusters related to the growth type (spring vs. winter) and breeding programs, thereby laying groundwork for future oat breeding initiatives.
Article Synopsis
- The study aimed to find molecular markers related to flowering time in three oat populations derived from Brazilian varieties, which is crucial for crop adaptation and growing cycles.
- Researchers used recombinant inbred lines and identified one major quantitative trait locus (QTL) affecting flowering time in each of the crosses studied, showing some connections to known genetic loci associated with day-length insensitivity.
- The findings suggest that the Brazilian oat line UFRGS 8 has favorable alleles for early flowering, making it a strong candidate for molecular breeding to enhance oat production under short-day conditions in Brazil.