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Díaz-Rueda P, Franco-Navarro JD, Messora R, Espartero J, Rivero-Núñez CM, Aleza P, Capote N, Cantos M, García-Fernández JL, de Cires A, Belaj A, León L, Besnard G, Colmenero-Flores JM. SILVOLIVE, a Germplasm Collection of Wild Subspecies With High Genetic Variability as a Source of Rootstocks and Resistance Genes for Olive Breeding. FRONTIERS IN PLANT SCIENCE 2020; 11:629. [PMID: 32547577 PMCID: PMC7270354 DOI: 10.3389/fpls.2020.00629] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/23/2020] [Indexed: 06/11/2023]
Abstract
Wild subspecies of Olea europaea constitute a source of genetic variability with huge potential for olive breeding to face global changes in Mediterranean-climate regions. We intend to identify wild olive genotypes with optimal adaptability to different environmental conditions to serve as a source of rootstocks and resistance genes for olive breeding. The SILVOLIVE collection includes 146 wild genotypes representative of the six O. europaea subspecies and early-generations hybrids. These genotypes came either from olive germplasm collections or from direct prospection in Spain, continental Africa and the Macaronesian archipelago. The collection was genotyped with plastid and nuclear markers, confirming the origin of the genotypes and their high genetic variability. Morphological and architectural parameters were quantified in 103 genotypes allowing the identification of three major groups of correlative traits including vigor, branching habits and the belowground-to-aboveground ratio. The occurrence of strong phenotypic variability in these traits within the germplasm collection has been shown. Furthermore, wild olive relatives are of great significance to be used as rootstocks for olive cultivation. Thus, as a proof of concept, different wild genotypes used as rootstocks were shown to regulate vigor parameters of the grafted cultivar "Picual" scion, which could improve the productivity of high-density hedgerow orchards.
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Affiliation(s)
- Pablo Díaz-Rueda
- Instituto de Recursos Naturales y Agrobiología, Spanish National Research Council (CSIC), Seville, Spain
| | - Juan D. Franco-Navarro
- Instituto de Recursos Naturales y Agrobiología, Spanish National Research Council (CSIC), Seville, Spain
| | - Rita Messora
- Plant Physiology Laboratory, Dipartimento Sci Vita, Univ Modena & Reggio Emilia, Modena, Italy
| | - Joaquín Espartero
- Instituto de Recursos Naturales y Agrobiología, Spanish National Research Council (CSIC), Seville, Spain
| | - Carlos M. Rivero-Núñez
- Instituto de Recursos Naturales y Agrobiología, Spanish National Research Council (CSIC), Seville, Spain
| | - Pablo Aleza
- Centro de Citricultura y Producción Vegetal, Instituto Valenciano de Investigaciones Agrarias, Moncada, Spain
| | - Nieves Capote
- Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA) Centro Las Torres, Seville, Spain
| | - Manuel Cantos
- Instituto de Recursos Naturales y Agrobiología, Spanish National Research Council (CSIC), Seville, Spain
| | - Jose L. García-Fernández
- Instituto de Recursos Naturales y Agrobiología, Spanish National Research Council (CSIC), Seville, Spain
| | - Alfonso de Cires
- Departamento de Biología Vegetal y Ecología, Fac Biología, Univ de Sevilla, Seville, Spain
| | - Angjelina Belaj
- Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA) Centro Alameda del Obispo, Córdoba, Spain
| | - Lorenzo León
- Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA) Centro Alameda del Obispo, Córdoba, Spain
| | - Guillaume Besnard
- CNRS-UPS-IRD, EDB, UMR 5174, Université Paul Sabatier, Toulouse, France
| | - Jose M. Colmenero-Flores
- Instituto de Recursos Naturales y Agrobiología, Spanish National Research Council (CSIC), Seville, Spain
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Korpelainen H, Bisang I, Hedenäs L, Kolehmainen J. The first sex-specific molecular marker discovered in the moss Pseudocalliergon trifarium. J Hered 2008; 99:581-7. [PMID: 18502734 DOI: 10.1093/jhered/esn036] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Most dioecious plants do not exhibit discernible sexual dimorphism before sexual maturity. Therefore, it is impossible to address any sex-related questions during the prereproductive phase unless a genetic sex marker is available for gender determination. The aim of the present study was to develop a genetic sex marker for the moss Pseudocalliergon trifarium to allow gender and sex ratio determination at any stage in the life cycle. A high proportion of P. trifarium populations do not express sex. The screening of genomic DNA with inter simple sequence repeat (ISSR) primers was used to discover sex-specific polymerase chain reaction (PCR) amplification products. A presumably female-specific band was found, excised from the gel, cloned, and sequenced. A sequence-walking method was used to characterize the same region in males. A primer pair was designed to allow the amplification of a 159-bp portion of the female-specific DNA region. All tested material, up to 16-year-old herbarium specimens, provided unambiguous amplification products. This study successfully provides, for the first time in a moss, a sex-specific DNA marker. It allows reliable determination of gender and sex ratios. The short length of the amplification product is an advantage as satisfactory PCR products are more likely when the targeted sequence is short. The amount of variation in the DNA region shared by both sexes was relatively high. If the male sequence can be better characterized, the sex-specific regions could possibly be used to evaluate sex-specific phylogeographic patterns.
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Affiliation(s)
- Helena Korpelainen
- Department of Applied Biology, University of Helsinki, PO Box 27, FI-00014 Helsinki, Finland.
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