Abstract
The conservation community has been set a considerable challenge by way of the CBD (Convention on Biological Diversity) 2010 targets. This may not be achievable by 2010 as demanded by the CBD, but at least methodologies can be assessed with a view to their implementation, so that loss of biodiversity and its inherent genetic diversity can be reduced post 2010. There is therefore a need to develop and implement protocols to efficiently measure genetic erosion and to make the identification of the drivers of erosion clear enabling counter-measures to be taken. In this paper the applicability of the indirect genetic erosion threat assessment for wild populations of rare and endemic Vicia species has been investigated. The method applied was based on the scoring of 18 factors perceived to be threats in the 18 study sites in two regions of Syria. Both temporal and spatial patterns of genetic erosion were considered. The method clearly detected spatial patterns of threat, enabling discrimination between the study sites located in the two study regions. However, no significant variation among the sites within each region was detected, highlighting the restricted spatial resolution of the method. Most importantly the results were in agreement with population demographic change observed, confirmed by a highly significant correlation between the erosion threat score and the relative population size change over the last 20 years. The results confirm the great potential of indirect genetic erosion threat assessment in routine evidence-based wild plant conservation decision-making.
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Arunachalam V (1999) Genetic erosion in plant genetic resources and Early Warning System: a diagnosis dilating genetic conservation. In: Proceedings of technical meeting on the methodology of the world information and early warning system on plant genetic resources. FAO, Rome. Available from www.apps3.fao.org/views/prague/technical
Balmford A, Bennun L, ten Brink B, Cooper D, Côté IM, Crane P, Dobson A, Dudley N, Dutton I, Green RE, Gregory RD, Harrison J, Kennedy ET, Kremen C, Leader-Williams N, Lovejoy TE, Mace G, May R, Mayaux P, Morling P, Phillips J, Redford K, Ricketts TH, Rodríguez JP, Sanjayan M, Schei PJ, van Jaarsveld AS, Walther BA (2005) The convention on biological diversity’s 2010 target. Science 307:212–213
Bennett S, Maxted N (1997) An ecogeographic analysis of the Vicia narbonensis complex. Genet Resour Crop Evol 44:411–428
Chessa I, Nieddu G (2005) Analysis of diversity in the fruit tree genetic resources from a Mediterranean island. Genet Resour Crop Evol 52:267–276
Donini P, Law JR, Koebner RMD, Reeves JC, Cooke RJ (2000) Temporal trends in the diversity of UK wheat. Theor Appl Genet 100(6):912–917
Enneking D, Maxted N (1995) Narbon bean: Vicia narbonensis L. (Leguminosae). In: Smartt J, Simmonds NW (eds) Evolution of crop plants, 2nd edn. Longman Group, Harlow, Essex, pp 316–321
Ehrman TAM, Maxted N (1990) Ecogeographic survey and collection of Syrian Vicieae and Cicereae (Leguminosae). Plant Genet Resour Newsl 77:1–8
Fleishman E, Launer AE, Rehm Switky K, Yandell U, Heywood J, Murphy DD (2001) Rules and exceptions in conservation genetics: genetic assessment of the endangered plant Cordylanthus palmatus and its implications for management planning. Biol Conserv 98:45–53
Gao L, Chen W, Jiang W, Ge S, Hong D, Wang X (2000) Genetic erosion in northern marginal population of the common wild rice Oryza rufipogon Griff. and its conservation, revealed by the change of population genetic structure. Hereditas 133:47–53
Guarino L (1995) Assessing the threat of genetic erosion. In: Guarino L, Ramanatha Rao V, Reid R (eds) Collecting plant genetic diversity: technical guidelines. CAB International, Wallingford, pp 67–74
Guarino L (1999) Approaches to measuring genetic erosion. In: Proceedings of technical meeting on the methodology of the world information and early warning system on plant genetic resources. FAO, Rome. Available from www.apps3.fao.org/views/prague/technical
Hammer K, Knüpffer H, Xhuveli L, Perrino P (1996) Estimating genetic erosion in landraces − two case studies. Genet Resour Crop Evol 43(4):329–336
Hawkes JG, Maxted N, Ford-Lloyd BV (2000) The ex situ conservation of plant genetic resources. Kluwer, Dordrecht
Khlestkina EK, Huang X, Quenum FJ-B, Chebotar S, Röder MS, Börner A (2004) Genetic diversity in cultivated plants − loss or stability? Theor Appl Genet 108:1466–1472
Kolodinska Brantestam A (2004) A century of breeding—is genetic erosion a reality? Temporal diversity changes in Nordic and Baltic barley. Dissertation, Swedish University of Agricultural Sciences
Luong V, Vigouroux Y, Mariac C, Pham JL, Guengant JP, Luxereau A, Bezançon G, Robert T, Kapran I, Mamadou MA, Gérard B, Sagnard F, Deu M, Chantereau J, Amoukou I (2005) Change in genetic diversity and pearl millet and sorghum landraces in Niger over a 25 Years Period. Paper presented at the 13th Plant and Animal Genome Conference, San Diego, United States, 14–19 January 2005
Manifesto MM, Schlatter AR, Hopp HE, Suárez EY, Dubcovsky J (2001) Quantitative evaluation of genetic diversity in wheat germplasm using molecular markers. Crop Sci 41:682–690
Martos V, Royo C, Rharrabti Y, Garcia del Moral LF (2005) Using AFLPs to determine phylogenetic relationships and genetic erosion in durum wheat cultivars released in Italy and Spain throughout the 20th century. Field Crops Res 91:107–116
Maxted N (1993) A phenetic investigation of Vicia L. subgenus Vicia (Leguminosae, Vicieae). Bot J Linn Soc 111:155–182
Maxted N (1995) An ecogeographical study of Vicia subgenus Vicia. Systematic and ecogeographical studies on crop genepools. 8. International Plant Genetic Resources Institute, Rome, Italy
Maxted N, Guarino L (2006) Genetic erosion and genetic pollution of crop wild relatives. In: Ford-Lloyd BV, Dias SR, Bettencourt E (eds) Genetic erosion and pollution assessment methodologies. IPGRI, Rome, pp 35–46
Maxted N, Hawkes JG, Guarino L, Sawkins M (1997) The selection of taxa for plant genetic conservation. Genet Resour Crop Evol 44:337–348
de Oliveira LO, Martins ER (2002) A quantitative assessment of genetic erosion in ipecac (Psychotria ipecacuanha). Genet Resour Crop Evol 49:607–617
Pistorius R (1997) Scientists, plants and politics. IPGRI, Rome
del Rio AH, Bamberg JB, Huaman Z, Salas A, Vega SE (1997) Assessing changes in the genetic diversity of potato gene banks. 2. In situ vs. ex situ. TAG 95:199–204
Rohlf FJ (1998) NTSYS-pc: numerical taxonomy and multivariate analysis system. Version 2.0. Applied Biostatistics, New York
Serwinski J (1999) Reporting on the assessment of plant genetic erosion. In: Proceedings of technical meeting on the methodology of the world information and early warning system on plant genetic resources. FAO, Rome. Available from www.apps3.fao.org/views/prague/technical
Tanksley SD, McCouch SR (1997) Seed banks and molecular maps: unlocking genetic potential from the wild. Science 277:1063–1066
Tapia BC, Estrella JE (2001) Genetic erosion quantification in Ullucus (Ullucus tuberosus Caldas), Oca (Oxalis tuberosa Mol.) and Mashua (Tropaeolum tuberosum R.&P.) in agroecosystems of the provinces of Canar, Chimborazi and Tungurahua − Ecuador. Paper presented at the workshop ‘In situ conservation of agrobiodiversity: scientific and institutional experiences and implications for national policies.’ La Molina, Peru, August 14–17, 2001
Teklu Y, Hammer K (2006) Farmers’ perception and genetic erosion of tetraploid wheats landraces in Ethiopia. Genet Resour Crop Evol 53(6):1099–1113
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Keiša, A., Maxted, N. & Ford-Lloyd, B. The assessment of biodiversity loss over time: wild legumes in Syria. Genet Resour Crop Evol 55, 603–612 (2008). https://doi.org/10.1007/s10722-007-9264-z
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DOI: https://doi.org/10.1007/s10722-007-9264-z