Genetic analysis of the wild strawberry (Fragaria vesca) volatile composition
Visualitza/Obre
Data de publicació
2017-10-25ISSN
0981-9428
Resum
The volatile composition of wild strawberry (Fragaria vesca) fruit differs from that of the cultivated strawberry, having more intense and fruity aromas. Over the last few years, the diploid F. vesca has been recognized as a model species for genetic studies of cultivated strawberry (F. x ananassa), and here a previously developed F. vesca/F. bucharica Near Isogenic Line collection (NIL) was used to explore genetic variability of fruit quality traits. Analysis of fruit volatiles by GC-MS in our NIL collection revealed a complex and highly variable profile. One hundred compounds were unequivocally identified, including esters, aldehydes, ketones, alcohols, terpenoids, furans and lactones. Those in a subset, named key volatile compounds (KVCs), are likely contributors to the special aroma/flavour of wild strawberry. Genetic analysis revealed 50 major quantitative trait loci (QTL) including 14 QTL for KVCs, and one segregating as a dominant monogenetic trait for nerolidol. The most determinant regions affecting QTLs for KVCs, were mapped on LG5 and LG7. New candidate genes for the volatile QTL are proposed, based on differences in gene expression between NILs containing specific fragments of F. bucharica and the F. vesca recurrent genome. A high percentage of these candidate genes/alleles were colocalized within the boundaries of introgressed regions that contain QTLs, appearing to affect volatile metabolite accumulation acting in cis. A NIL collection is a good tool for the genetic dissection of volatile accumulation in wild strawberry fruit and a source of information for genes and alleles which may enhance aroma in cultivated strawberry.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
Anglès
Matèries (CDU)
633 - Cultius i produccions
Pàgines
19
Publicat per
Elsevier
Publicat a
Plant Physiology and Biochemistry
Citació
Urrutia, María, José L. Rambla, Konstantinos G. Alexiou, Antonio Granell, and Amparo Monfort. 2017. "Genetic Analysis Of The Wild Strawberry (Fragaria Vesca) Volatile Composition". Plant Physiology And Biochemistry 121: 99-117. doi:10.1016/j.plaphy.2017.10.015.
Número de l'acord de la subvenció
MICINN/Programa Nacional de Proyectos de Investigación Fundamental/AGL2010-21414/ES/ANALISIS GENETICO DE LOS CARACTERES DE CALIDAD NUTRICIONAL DE FRUTO EN FRESA SILVESTRE Y CULTIVADA/
INIA/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTA2013-00010/ES/Análisis genético del aroma de las fresas silvestre y cultivada: desarrollo de marcadores moleculares para su selección en fresa cultivada/
MINECO/Programa Estatal de fomento de la investigación científica y técnica de excelencia/SEV-2015-0533/ES/ /
Programa
Genòmica i Biotecnologia
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