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Artículo

Genes modulating the increase in sexuality in the facultative diplosporous grass eragrostis curvula under water stress conditions

Selva, Juan PabloIcon ; Zappacosta, Diego CarlosIcon ; Carballo, JoséIcon ; Rodrigo, Juan ManuelIcon ; Bellido, Andrés; Gallo, Cristian AndrésIcon ; Gallardo, Jimena AliciaIcon ; Echenique, Carmen VivianaIcon
Fecha de publicación: 21/09/2020
Editorial: Multidisciplinary Digital Publishing Institute
Revista: Genes
ISSN: 2073-4425
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Biotecnología Agropecuaria

Resumen

Eragrostis curvula presents mainly facultative genotypes that reproduce by diplosporous apomixis, retaining a percentage of sexual pistils that increase under drought and other stressful situations, indicating that some regulators activated by stress could be affecting the apomixis/sexual switch. Water stress experiments were performed in order to associate the increase in sexual embryo sacs with the differential expression of genes in a facultative apomictic cultivar using cytoembryology and RNA sequencing. The percentage of sexual embryo sacs increased from 4 to 24% and 501 out of the 201,011 transcripts were differentially expressed (DE) between control and stressed plants. DE transcripts were compared with previous transcriptomes where apomictic and sexual genotypes were contrasted. The results point as candidates to transcripts related to methylation, ubiquitination, hormone and signal transduction pathways, transcription regulation and cell wall biosynthesis, some acting as a general response to stress and some that are specific to the reproductive mode. We suggest that a DNA glycosylase EcROS1-like could be demethylating, thus de-repressing a gene or genes involved in the sexuality pathways. Many of the other DE transcripts could be part of a complex mechanism that regulates apomixis and sexuality in this grass, the ones in the intersection between control/stress and apo/sex being the strongest candidates.
Palabras clave: APOMIXIS , DIFFERENTIALLY EXPRESSED GENES , DROUGHT STRESS , RNA-SEQ , SEXUALITY , WEEPING LOVEGRASS
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution 2.5 Unported (CC BY 2.5)
Identificadores
URI: http://hdl.handle.net/11336/123144
URL: https://www.mdpi.com/2073-4425/11/9/969
DOI: http://dx.doi.org/10.3390/genes11090969
Colecciones
Articulos(CERZOS)
Articulos de CENTRO REC.NAT.RENOVABLES DE ZONA SEMIARIDA(I)
Citación
Selva, Juan Pablo; Zappacosta, Diego Carlos; Carballo, José; Rodrigo, Juan Manuel; Bellido, Andrés; et al.; Genes modulating the increase in sexuality in the facultative diplosporous grass eragrostis curvula under water stress conditions; Multidisciplinary Digital Publishing Institute; Genes; 11; 9; 21-9-2020; 1-21
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