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Molecular analysis of polymorphisms in genes potentially related to perennially in cereals

AuthorsCobos, María José; Prieto, Pilar
KeywordsWheat breeding
Hordeum chilense
Issue DateSep-2015
CitationXL Congreso de la Sociedad Española de Genética (2015)
AbstractDuring the domestication process, cultivated plants have lost many desirable traits respect their wild relatives that could be interesting for better adaptation of actual crops to biotic and abiotic stresses. Perennially can be an interesting attribute for plant breeders to be transferred to annual crops. For example, the development of perennial staple crops could solve many agroecological problems, providing benefits for environmental conservation, food security and reducing labor costs. However, perennially is a complex trait which interacts with the environment. It is known that perennial species possess large root systems, leading uptake water and nutrients during periods of drought, and have the ability of regrowth out of season. Thus, it is not only the radical system but also the aerial structure of the plant which could be target of this study. In order to dissect the genetic basis of traits related to perennially, we have selected a list of genes from different grasses including Oryza sativa, Zea mays, Hordeum vulgare, Hordeum chilense and Triticum aestivum, which are involved in genetic processes such as signaling, length-root or flowering time, among others, and could be potentially related to perennially. Polymorphisms of such genes have been studied in wild perennial barley (H. chilense), which is a genetic tool for wheat breeding, and the cultivated (annual) barley (H. vulgare). In a first stage, we have identified polymorphic sequences at the genomic level, corresponding to single nucleotide polymorphisms (SNPs), insertions or/and deletions of nucleotide fragments. In a second stage, the alignment of the aminoacid sequence for several of these genes displayed truncated protein structures that could explain the physiological features involved in signaling pathways and could contribute to shed light to the mechanisms related to perennially. These candidate genes playing a possible role in perennially have been selected for further analysis.
DescriptionTrabajo presentado en el XL Congreso de la Sociedad Española de Genética, celebrado en Córdoba del 16 al 18 de septiembre de 2015.
Appears in Collections:(IAS) Comunicaciones congresos
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