Metabolomic analysis identifies differences between wild and domesticated chili pepper fruits during development (Capsicum annuum L.)

13 de junio de 2022

Les invitamos a leer el artículo: "Metabolomic analysis identifies differences between wild and domesticated chili pepper fruits during development (Capsicum annuum L.)" del Dr. José Ordaz, investigador de la UGA-Langebio y del M.C. Felipe Cervantes Hernández, estudiante de doctorado en Biotecnología de Plantas.

Autores:Felipe Cervantes-Hernández¹,Neftalí Ochoa-Alejo²,Octavio Martínez¹ and José Juan Ordaz-Ortiz¹.

1. Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad de Genómica Avanzada, Irapuato, Mexico
2. Departamento de Ingeniería Genética, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Irapuato, Irapuato, Mexico

Felicitamos al estudiantado y profesorado que contribuyeron en esta investigación por su arduo trabajo.

Abstract: Capsicum spp. members are a rich source of specialized compounds due to their secondary metabolism. Some metabolic pathways have suffered modifications during the domestication process and improvement of agricultural traits. Here, we compared non-targeted LC–MS profiles from several areas: wild accessions (C. annuum L. var. glabriusculum), domesticated cultivars (C. annuum L.), and the F1 progeny of a domesticated, and a wild accession cross (in both directions) throughout seven stages of fruit development of chili pepper fruits. The main detected differences were in glycerophospholipid metabolism, flavone and flavonol biosynthesis, sphingolipid metabolism, and cutin biosynthesis. The domesticated group exhibited a higher abundance in 12′-apo-β-carotenal, among others capsorubin, and β-tocopherol. Palmitic acid and derivates, terpenoids, and quercitrin were prevalent in the wild accessions. F1 progeny showed a higher abundance of capsaicin, glycol stearate, and soyacerebroside I. This work supports evidence of the side-affectation of trait selection over the metabolism of chili pepper fruit development. Furthermore, it was also observed that there was a possible heterosis effect over the secondary metabolism in the F1 progeny.

Keywords: Capsicum annuum, global profiling, metabolomics, domestication process, fruit development.