Ana Raquel Santos1, António Graça2,3, Ana Catarina Gomes1 1 BIOCANT, Centro de Inovação em Biotecnologia, BIOCANT PARK – Parque Tecnológico de Cantanhede, Núcleo 04, Lote 8, 3060-197 Cantanhede, Portugal, 2 Sogrape Vinhos, S.A., 4430-852 Avintes, Portugal 3 PORVID- Associação Portuguesa para a Diversidade da Videira, Tapada da Ajuda, 1349-017 Lisboa Abstract and objectives Plant Material Worldwide there are about 1400 grapevine varieties used for wine production, however, and despite such high biodiversity, about 80 percent of wine is produced from only 20 of these varieties [1]. In result, such important heritage is facing extinction, endangering grapevine biodiversity, in a process that must be reverted as genetic resources are valuable reservoirs of new traits, indispensable to meet future demands. In Portugal, most genetic variability was stored in a network of commercial and public vineyards most of which currently approaching their lifetime limit, which has urged for actions to safeguard and to organize Portuguese biodiversity. Indeed, the Portuguese Association for Grapevine Diversity (PORVID) has led a prospection and conservation project, whose principal objective is to build a full-diversity in vivo library of the Portuguese grapevine heritage. The great interest and urgency of this problem led to the molecular analysis to be regarded as a strategy for prompt detection of putative new varieties. Herein, we will describe how the use of molecular genotyping system that we have developed, has resolved unknown V. vinifera identities, thus resulting in the identification of possible new varieties and their genitors. ADVID – Associação para o Desenvolvimento da Viticultura Duriense, Peso da Régua SDASM Serviços de Desenvolviment o Agrário de São Miguel, Ponta Delgada ATEVA – Associação Técnica dos Viticultores do Alentejo, Évora AVIPE Associação de Viticultores do Concelho de Palmela, Palmela PORVID – Associação Portuguesa para a Diversidade da Videira, Lisboa Prospection, conservation and clonal material evaluation ISA – Instituto Superior de Agronomia, Lisboa DRAPALG Direcção Regional de Agricultura e Pescas do Algarve, Faro DRAPC Direção Regional de Agricultura e Pescas do Centro, Castelo Branco INIAV - Instituto Nacional de Investigação Agrária e Veterinária, IP, Oeiras DRAPN - Direção Regional de Agricultura e Pescas do Norte, Mirandela A total of 72 Grapevine samples were collected from seven Portuguese wine regions, after a 4-year prospection work, led by several entities (Fig. 1). Fresh young leaves were collected and DNA was extracted using Nucleo-Spin Plant II Kit (Macherey-Nagel.) DRAPLVT Direção Regional de Agricultura e Pescas de Lisboa e Vale do Tejo, Santarém Fig. 1- List of participating entities on the prospection, conservation and clonal material evaluation work. Methods Data Analysis SSR Amplification National and International Databases consulted for matching purposes. Improved set of 14 markers amplified in 3 Multiplex reactions (Fig. 2)[2]. GrapeGen 9 SSR 6 chromosomes Set of 14 SSR 11 chromosomes Database Links Number of compared SSR Vitis International Variety Catalogue www.vivc.de 6 630 Sistema de Identificación de Variedades de Vid Españolas mediante Microsatélites http://sivvem.monbyte.com 6 280 Projet Pl@ntGrape http://plantgrape.plantnet-project.org/ 9 313 European Vitis Database http://www.eu-vitis.de/index.php 9 4359 US National Grape Registry http://www.ars.usda.gov/Main/docs.htm?docid =13743 6 224 Lacombe et al. 2013 http://link.springer.com/article/10.1007%2Fs0 0122-012-1988-2 12 1130 Portuguese Consortium - 6 617 Biocant Database - 14 480 Number of accessions Fig. 2- Illustration of number of chromosomes covered by GrapeGen06 Project and by our improved set. Increase in genomic resolution Total 8033 Costs of analisys reduced Results Matching Interestingly, 10 of the 72 grapevine samples did not obtain any match in the databases consulted and consequently were considered as being previously undescribed varieties. Thus, 18% of the analyzed vine samples are new varieties, not described elsewhere. Such abundant and increasing biodiversity, further strengthens the scenario of the Iberian Peninsula, as a Center of Grapevine domestication [3]. 13 samples 10 putative new varieties 72 41 samples 21 native varieties More than half of the identified varieties are native, nevertheless, varieties of neighbour countries like Spain or France were also found. Interestingly, in Algarve Region many origins were revealed, such as Greece, Italy, or Algeria. This may be due to the fact that this region has always been on the itinerary of merchant ships of the Mediterranean . 18 samples 13 foreign varieties Clear evidence of the importance of the wide on-going program of prospection, conservation and characterization of endangered varieties is provided. Results show the full progenies of four samples and in six samples one parent is revealed (Tab.I). We found one more progeny of Touriga Nacional X Marufo. Paternity analysis Table I –Progenies obtained with Cervus3.0 Software for the new genotypes [4]. Sample 1001-40 1003-08 5083-16 ML0501 Parent 1 Branco Escola B Mourisco Branco B Marufo N Camarate N Parent 2 Azal Tinto N Tinta Miúda N Touriga Nacional N Moreto N (Alentejo) LOD Score 2,20E+15 2,26E+15 1,94E+15 2,03E+15 Confidence 95% 95% 95% 95% Unknown Esganinho B Na 7,25E+14 95% 2043-67b Espadeiro N Na 1,13E+15 95% 2043-80 30011-04 2022-59 30015-06 Donzelinho Branco B Ferral R Azal B Diagalves B Na Na Na Na 5,66E+14 1,08E+15 8,94E+14 1,45E+15 80% 95% 95% 95% Conclusions 10 putative new native grape varieties, that enrich the already abundant Portuguese heritage of autochthonous grape varieties were discovered. BIBLIOGRAPHY [1] E. Freire, Enovitis , Vol July, August, September (2013). http://www.winemosaic.org/ [2] AR. Santos, D. Duarte, S. Sousa, J. EirasDias, AC. Gomes, Proceedings of the 36th world congress of vine and wine OIV, Bucharest, Romania (2013). [3] I.Castro, O. Pinto-Carnide, JM . Ortiz, JP . Martín, Mol Biotech 54, p 528–540 (2013). [4] S.T. Kalinowski, M.L. Taper, T.C. Marshall Mol Ecol 16, p 1099-1006 (2007). This work was carried out under the InovWine project funded by the FEDER, through the Programa Operacional Fatores de Competitividade – COMPETE, and “Quadro de Referência Estratégico Nacional” – QREN, reference FCOMP-01-0202-FEDER-030272. The authors wish to express their appreciation to Professors Antero Martins and Elsa Gonçalves for their support, as well as to all involved technical staff of institutions mentioned in Figure 1 for their commitment to the PORVID diversity prospection projects currently under way, which provided the material basis for this work. Native varieties are particularly promising in terms of uniqueness and provide a new niche in the competitive market. This work sheds a new light on the grape biodiversity that might still be uncovered. Genotype’s conservation efforts as these may be of strategic importance for future needs.