Publications by authors named "V Castiblanco"

Background: Urochloa (syn. Brachiaria) is a genus of tropical grasses sown as forage feedstock, particularly in marginal soils. Here we aimed to clarify the genetic diversity and population structure in Urochloa species to understand better how population evolution relates to ploidy level and occurrence of apomictic reproduction.

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Article Synopsis
  • The study focuses on characterizing the genomes of diploid and polyploid Urochloa species, important C4 tropical forage grasses from Africa, to understand their evolutionary pathways and genome composition.
  • Researchers analyzed 362 grass accessions using flow cytometry, sequencing, and cytogenetic methods to identify variations and repetitive DNA within these species.
  • The findings led to a proposed new nomenclature for these genomes and a model of their evolution, emphasizing the need for careful selection in breeding to enhance the sustainability and agronomic potential of Urochloa grass species.
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Background: Fusarium culmorum is an important pathogen causing head blight of cereals in Europe. This disease is of worldwide importance leading to reduced yield, grain quality, and contamination by mycotoxins. These mycotoxins are harmful for livestock and humans; therefore, many countries have strict regulatory limits for raw materials and processed food.

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Background And Aims: The C4Urochloa species (syn. Brachiaria) and Megathyrsus maximus (syn. Panicum maximum) are used as pasture for cattle across vast areas in tropical agriculture systems in Africa and South America.

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(including , and some ) tropical grasses are native to Africa and are now, after selection and breeding, planted worldwide, particularly in South America, as important forages with huge potential for further sustainable improvement and conservation of grasslands. We aimed to develop an optimized approach to determine ploidy of germplasm collection of this tropical forage grass group using dried leaf material, including approaches to collect, dry and preserve plant samples for flow cytometry analysis. Our methods enable robust identification of ploidy levels (coefficient of variation of G0/G1 peaks, CV, typically <5%).

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