Two Loci, RiAF3 and RiAF4, Contribute to the Annual-Fruiting Trait in Rubus
Jibran, Rubina (Palmerston North Research Centre. The New Zealand Institute for Plant Food Research Limited)
Spencer, Jessica (North Carolina State University. Department of Horticultural Science)
Fernandez, Gina (North Carolina State University. Department of Horticultural Science)
Monfort, Amparo (Centre de Recerca en Agrigenòmica)
Mnejja, Mourad (Centre de Recerca en Agrigenòmica)
Dzierzon, Helge (Palmerston North Research Centre. The New Zealand Institute for Plant Food Research Limited)
Tahir, Jibran (Palmerston North Research Centre. The New Zealand Institute for Plant Food Research Limited)
Davies, Kevin (Palmerston North Research Centre. The New Zealand Institute for Plant Food Research Limited)
Chagné, David (Palmerston North Research Centre. The New Zealand Institute for Plant Food Research Limited)
Foster, Toshi M. (Palmerston North Research Centre. The New Zealand Institute for Plant Food Research Limited)

Fecha:	2019
Resumen:	Most Rubus species have a biennial cycle of flowering and fruiting with an intervening period of winter dormancy, in common with many perennial fruit crops. Annual-fruiting (AF) varieties of raspberry (Rubus idaeus and Rubus occidentalis L. ) and blackberry (Rubus subgenus Rubus) are able to flower and fruit in one growing season, without the intervening dormant period normally required in biennial-fruiting (BF) varieties. We used a red raspberry (R. idaeus) population segregating for AF obtained from a cross between NC493 and 'Chilliwack' to identify genetic factors controlling AF. Genotyping by sequencing (GBS) was used to generate saturated linkage maps in both parents. Trait mapping in this population indicated that AF is controlled by two newly identified loci (RiAF3 and RiAF4) located on Rubus linkage groups (LGs) 3 and 4. The location of these loci was analyzed using single-nucleotide polymorphism (SNP) markers on independent red raspberry and blackberry populations segregating for the AF trait. This confirmed that AF in Rubus is regulated by loci on LG 3 and 4, in addition to a previously reported locus on LG 7. Comparative RNAseq analysis at the time of floral bud differentiation in an AF and a BF variety revealed candidate genes potentially regulating the trait.
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Publicado en:	Frontiers in plant science, Vol. 10 (October 2019) , art. 1341, ISSN 1664-462X

DOI: 10.3389/fpls.2019.01341
PMID: 31708950

15 p, 4.7 MB

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