Transcriptome analyses throughout chili pepper fruit development reveal novel insights into the domestication process

Martínez, O. ; Arce-Rodríguez, M.L. ; Hernández-Godínez, F. ; Escoto-Sandoval, C. ; Cervantes-Hernández, F. ; Hayano-Kanashiro, C. ; Ordaz-Ortiz, J.J. ; Humberto Reyes-Valdés, M. ; Razo-Mendivil, F.G. ; Garcés-Claver, A. ; Ochoa-Alejo, N.

Resumen: Chili pepper (Capsicum spp.) is an important crop, as well as a model for fruit development studies and domestication. Here, we performed a time-course experiment to estimate standardized gene expression profiles with respect to fruit development for six domesticated and four wild chili pepper ancestors. We sampled the transcriptomes every 10 days from flowering to fruit maturity, and found that the mean standardized expression profiles for domesticated and wild accessions significantly differed. The mean standardized expression was higher and peaked earlier for domesticated vs. wild genotypes, particularly for genes involved in the cell cycle that ultimately control fruit size. We postulate that these gene expression changes are driven by selection pressures during domestication and show a robust network of cell cycle genes with a time shift in expression, which explains some of the differences between domesticated and wild phenotypes.

Idioma: Inglés

DOI: 10.3390/plants10030585

Año: 2021

Publicado en: Plants 10, 3 (2021), 585 [20 pp.]
ISSN: 2223-7747

Factor impacto JCR: 4.658 (2021)

Categ. JCR: PLANT SCIENCES rank: 39 / 240 = 0.162 (2021) - Q1 - T1

Factor impacto CITESCORE: 3.6 - Environmental Science (Q2) - Agricultural and Biological Sciences (Q2)

Factor impacto SCIMAGO: 0.765 - Plant Science (Q1) - Ecology, Evolution, Behavior and Systematics (Q1)

Tipo y forma: Article (Published version)