000069763 001__ 69763
000069763 005__ 20190709135549.0
000069763 0247_ $$2doi$$a10.1186/s12862-017-0996-x
000069763 0248_ $$2sideral$$a104858
000069763 037__ $$aART-2017-104858
000069763 041__ $$aeng
000069763 100__ $$aMarques, I.
000069763 245__ $$aEnvironmental isolation explains Iberian genetic diversity in the highly homozygous model grass Brachypodium distachyon
000069763 260__ $$c2017
000069763 5060_ $$aAccess copy available to the general public$$fUnrestricted
000069763 5203_ $$aBackground: Brachypodium distachyon (Poaceae), an annual Mediterranean Aluminum (Al)-sensitive grass, is currently being used as a model species to provide new information on cereals and biofuel crops. The plant has a short life cycle and one of the smallest genomes in the grasses being well suited to experimental manipulation. Its genome has been fully sequenced and several genomic resources are being developed to elucidate key traits and gene functions. A reliable germplasm collection that reflects the natural diversity of this species is therefore needed for all these genomic resources. However, despite being a model plant, we still know very little about its genetic diversity. As a first step to overcome this gap, we used nuclear Simple Sequence Repeats (nSSR) to study the patterns of genetic diversity and population structure of B. distachyon in 14 populations sampled across the Iberian Peninsula (Spain), one of its best known areas. Results: We found very low levels of genetic diversity, allelic number and heterozygosity in B. distachyon, congruent with a highly selfing system. Our results indicate the existence of at least three genetic clusters providing additional evidence for the existence of a significant genetic structure in the Iberian Peninsula and supporting this geographical area as an important genetic reservoir. Several hotspots of genetic diversity were detected and populations growing on basic soils were significantly more diverse than those growing in acidic soils. A partial Mantel test confirmed a statistically significant Isolation-By-Distance (IBD) among all studied populations, as well as a statistically significant Isolation-By-Environment (IBE) revealing the presence of environmental-driven isolation as one explanation for the genetic patterns found in the Iberian Peninsula. Conclusions: The finding of higher genetic diversity in eastern Iberian populations occurring in basic soils suggests that these populations can be better adapted than those occurring in western areas of the Iberian Peninsula where the soils are more acidic and accumulate toxic Al ions. This suggests that the western Iberian acidic soils might prevent the establishment of Al-sensitive B. distachyon populations, potentially causing the existence of more genetically depauperated individuals.
000069763 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/CGL2016-79790-P$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2012-39953-C02-01$$9info:eu-repo/grantAgreement/EC/FP7/301257/EU/The model plant system Trithuria (Hydatellaceae), a new window into the origin of flowering plants and gene function/ORIGIN$$9info:eu-repo/grantAgreement/ES/DGA/Bioflora
000069763 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000069763 590__ $$a3.027$$b2017
000069763 591__ $$aEVOLUTIONARY BIOLOGY$$b21 / 49 = 0.429$$c2017$$dQ2$$eT2
000069763 591__ $$aGENETICS & HEREDITY$$b70 / 171 = 0.409$$c2017$$dQ2$$eT2
000069763 592__ $$a1.656$$b2017
000069763 593__ $$aEcology, Evolution, Behavior and Systematics$$c2017$$dQ1
000069763 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000069763 700__ $$aShiposha, V.
000069763 700__ $$0(orcid)0000-0002-7734-8481$$aLópez-Alvarez, D.
000069763 700__ $$aManzaneda, A.J.
000069763 700__ $$aHernandez, P.
000069763 700__ $$aOlonova, M.
000069763 700__ $$0(orcid)0000-0001-7793-5259$$aCatalán, P.$$uUniversidad de Zaragoza
000069763 7102_ $$15011$$2063$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Botánica
000069763 773__ $$g17, 1 (2017), 139 [14 pp]$$pBMC Evol. Biol.$$tBMC EVOLUTIONARY BIOLOGY$$x1471-2148
000069763 8564_ $$s1033645$$uhttps://zaguan.unizar.es/record/69763/files/texto_completo.pdf$$yVersión publicada
000069763 8564_ $$s84149$$uhttps://zaguan.unizar.es/record/69763/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000069763 909CO $$ooai:zaguan.unizar.es:69763$$particulos$$pdriver
000069763 951__ $$a2019-07-09-12:11:34
000069763 980__ $$aARTICLE