Oryza glumaepatula: A wild relative to improve drought tolerance in cultivated rice.

Developing drought-resistant rice (Oryza sativa, L.) is essential for improving field productivity, especially in rain-fed areas affected by climate change. Wild relatives of rice are potential sources for drought-resistant traits. Therefore, we compared root growth and drought response among 22 wild Oryza species, from which Oryza glumaepatula was selected as a promising source for further exploration. A geographically diverse panel of 69 O. glumaepatula accessions was then screened for drought stress-related traits, and 6 of these accessions showed lower shoot dry weight (SDW) reduction, greater percentage of deep roots, and lower stomatal density (STO) under drought than the drought tolerant O. sativa variety, Sahbhagi dhan. Based on whole-genome resequencing of all 69 O. glumaepatula accessions and variant calling to a high-quality O. glumaepatula reference genome, we detected multiple genomic loci colocating for SDW, root dry weight at 30 to 45 cm depth, and STO in consecutive drought trials. Geo-referencing indicated that the potential drought donors originated in flood-prone locations, corroborating previous hypotheses about the coexistence of flood and drought tolerance within individual Oryza genomes. These findings present potential donor accessions, traits, and genomic loci from an AA genome wild relative of rice that, together with the recently developed reference genome, may be useful for further introgression of drought tolerance into the O. sativa backgrounds.

Genome sequence of Hemileia vastatrix Berk. and Br. (Race I), the causal agent of coffee leaf rust, isolate from Risaralda, Colombia.

Coffee leaf rust, caused by the fungus Hemileia vastatrix (Basidiomycota; Pucciniomycota), is a devastating disease spread worldwide. To improve the available genomes, we use PacBio HiFi sequencing enhanced by Dovetail Omni-C chromatin conformation capture to assemble a highly contiguous 747.98 Mb genome of an isolate collected from Coffea arabica.

Las reacciones adversas a medicamentos: una aproximación desde el punto de vista económico / Evaluation of medication side-effects from an economic perspective

La farmacovigilancia, en cuanto disciplina y actividad de las ciencias de salud dedicada a la recolección de información, análisis y ayuda a la toma de decisiones sobre reacciones adversas a medicamentos (RAM), ha tenido expansión conceptual y práctica desde la década de 1960. No obstante, muy pocos estudios han analizado en profundidad cuánto puede costarle este problema a un sistema de salud. El presente artículo pretende ofrecer un análisis de la literatura disponible, orientado hacia el costo generado por la atención de eventos adversos frente a medicamentos en la práctica médica - basado en datos de la literatura internacional - y ofrece un ejercicio hipotético de extrapolación sobre futuros costos de las RAM en Colombia. La finalidad última del presente artículo es sensibilizar y llamar a la reflexión a los diferentes actores del sector salud sobre el impacto económico y la necesidad de apoyar la implementación y desarrollo de un sistema nacional de farmacovigilancia.