{"ok":true,"nota":{"id":"23426cabba2c7142","slug":"en-plantas-una-familia-de-proteinas-ayuda-a-las-raices-a-sobrevivir-cu-23426c","titulo":"En plantas, una familia de proteínas ayuda a las raíces a sobrevivir cuando falta agua, en Arabidopsis y arroz","resumen":"Investigadores estudiaron las raíces de dos plantas, una modelo de laboratorio y el arroz, sometidas a poca agua simulada. Vieron que las proteínas DELLA regulan cómo responden los genes de la raíz a la sequía.","fuente":"biorxiv","fuenteNombre":"bioRxiv · preprints","color":"#be2628","autor":"Wong, C., Alabadi, D., Blazquez, M. A., Catarino, B.","url":"https://www.biorxiv.org/content/10.64898/2026.10.22.760938v1?rss=1","imagen":"/hoy/portada/23426cabba2c7142","tema":"ciencia","subtemas":["biologia vegetal","sequia","arroz","agricultura","genetica de plantas"],"entidades":["Arabidopsis thaliana","Oryza sativa"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-25T00:00:00.000Z","indexTs":"2026-10-25T13:26:04.362Z","hash":"1ed854b19159148fbf10ec1ae2ca45586da7f36e964971dede689a7a81c3dc1e","tsa":{"time":"Oct 25 13:26:57 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"Cuando el campo se seca, la planta no solo se achica: cambia qué genes prende en sus raíces para aguantar. Entender ese interruptor sirve para pensar cultivos más resistentes a la falta de lluvia, algo que pesa en la cosecha, el precio de los alimentos y el trabajo de quien vive del campo. Igual, es un estudio de laboratorio y todavía falta mucho para llevarlo a la chacra. La pregunta es cuánto tiempo más vamos a esperar para cuidar lo que ya tenemos.","quienFirma":"bioRxiv (preprint; institución principal no identificada en el resumen)","confianza":"preprint","consulta":null},"sello":{"hash":"1ed854b19159148fbf10ec1ae2ca45586da7f36e964971dede689a7a81c3dc1e","sello":"b8b71a32817b36f846c4186a9545396381039af823a5bd5c33d899faba12d46c","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6583459,"aleatorio":"0a139b88186ff9ac4061b9ae2a2fd60d7a03c380f08f96a5b763a564cd5f8535","tiempo":"2026-10-25T13:26:30.000Z"},"nist":{"cadena":2,"pulso":1998923,"salida":"CAACCBC90B253254A2BA37D2F2DAD32D412D022A909309D40D4961AE24D8236EAD656C06ED2DE2604FB73EFC57434602CEDA74C12D692B1DB5605BA381C0ED58","tiempo":"2026-10-25T13:26:00.000Z"},"noAntes":"2026-10-25T13:26:30.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 25 13:26:57 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"DELLA proteins modulate responsive and buffered transcriptional programs in Arabidopsis and rice roots under water limitation","descripcion":"Water limitation constrains plant growth and productivity, yet the molecular mechanisms regulating root responses remain incompletely understood. The DELLA repressors of gibberellin signaling are key growth regulators under stress, but their role in shaping transcriptional responses to water limitation, and its conservation, remain unclear. Here, we investigated DELLA function in roots of Arabidopsis thaliana and Oryza sativa under reduced water availability simulated by polyethylene glycol (PEG). Loss of DELLA function reduced the sensitivity of root growth to water limitation, affecting primary root elongation in A. thaliana and crown root formation in O. sativa. Transcriptomic profiling r","pubDate":"2026-10-25","url":"https://www.biorxiv.org/content/10.64898/2026.10.22.760938v1?rss=1"},"indexado":"2026-10-25T13:26:04.362Z"}}