Primer registro de Piriqueta mexicana (Passifloraceae) para la flora de Chiapas, México

Background and Aims: The flora of Chiapas is one of the most diverse in Mexico, but there are still species that have not been described or registered. The objective of this study is to publish the presence of Piriqueta mexicana collected in the Protected Natural Area “La Concordia Zaragoza”.Methods: Botanical specimens of Piriqueta were collected and were determined taxonomically through the use of specialized keys, consultation of material in virtual collections and with expert taxonomists. In addition, morphometric measurements of petiole, leaves, flowers, fruits and seeds of the collected material were compared with the descriptions of the type specimen and taxonomic revisions.Key results: The presence of Piriqueta mexicana is confirmed for the flora of Chiapas; the number of Piriqueta species present in this entity is expanded to two.Conclusions: The distribution area of Piriqueta mexicana extends to southern Mexico and this finding reaffirms the importance of continuing with botanical explorations in Protected Natural Areas, which represent effective reservoirs to maintain poorly known species.Antecedentes y Objetivos: La flora de Chiapas es una de las más diversas de México y aún existen especies que no se han descrito o registrado. El objetivo de este estudio es dar a conocer la presencia de Piriqueta mexicana colectada en el Área Natural Protegida “La Concordia Zaragoza”.Métodos: Se colectaron ejemplares botánicos de Piriqueta, los cuales se determinaron taxonómicamente mediante el uso de claves especializadas, consulta de material en colecciones virtuales y con taxónomos expertos. Además, se realizaron mediciones morfométricas de peciolo, hojas, flores, frutos y semillas del material colectado y se compararon con las descripciones del ejemplar tipo y de revisiones taxonómicas.Resultados clave: Se confirma la presencia de Piriqueta mexicana para la flora de Chiapas y con este nuevo registro se amplía a dos el número de especies de Piriqueta presentes en esta entidad.Conclusiones: Se amplía el área de distribución de Piriqueta mexicana y se reafirma la importancia de continuar con exploraciones botánicas en las Áreas Naturales Protegidas, las cuales representan reservorios efectivos para mantener especies poco conocidas

Electrostatic Fermentation: Molecular Response Insights for Tailored Beer Production

Electrostatic fermentation avoids the cellular redox imbalance of traditional fermentation, but knowledge gaps exist. This study explores the impact of electrostatic fermentation on the growth, volatile profile, and genetic response of Saccharomyces pastorianus Saflager S-23. The applied voltage (15 and 30 V) in the electrostatic fermentation system increased the growth and substrate utilization of S. pastorianus while decreasing ethanol production. The aromas typically associated with traditional fermentation, such as alcoholic, grape, apple, and sweet notes, were diminished, while aromas like roses, fruits, flowers, and bananas were augmented in electrostatic fermentation. RNA-seq analysis revealed upregulation of genes involved in cell wall structure, oxidoreductase activity, and iron ion binding, while genes associated with protein synthesis, growth control, homeostasis, and membrane function were downregulated under the influence of applied voltage. The electrostatic fermentation system modulates genetic responses and metabolic pathways in yeast, rendering it a promising method for tailored beer production. Demonstrating feasibility under industrial-scale and realistic conditions is crucial for advancing towards commercialization