Molecular Differences between Alleles Adh1-F and Adh1-S in Sugar Beet Beta vulgaris L.

Vinichenko, N. A.; Golovnina, Kseniya; Блинов, А. Г.; Sokolova, Olga O.; Левитес, Е. В.

doi:10.1023/b:ruge.0000016991.44399.7d

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…Moreover, extensive linkage disequilibrium has been described for the Adh gene in Populus tremula (Ingvarsson 2005). Mutagenesis and structural studies indicate that this hypervariable region is functionally important, and that amino acid replacement polymorphisms at exon4 correlate with mobility differences between isozyme Adh electrophoretic alleles (Hanfstingl et al 1994, Vinichenko et al 2004. Our results suggest the occurrence of different sequence variants in the Adh gene that explains the patterns of isozyme Adh alleles at LE.…”

Section: Discussionmentioning

confidence: 58%

Searching for molecular insight on hybridization in Nothofagus spp. forests at Lagunas de Epulauquen, Argentina

2016

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Estudio de la hibridación a nivel molecular en bosques de Nothofagus spp. Recently, however, its taxonomic status has been questioned due to its morphological, architectural and genetic distinctiveness. The convergence of migratory routes and hybridization with Nothofagus alpina are the two main hypotheses proposed to explain the distinctiveness of this population. Despite its unique characteristics, no evaluation of its putative origin has been carried out. In order to test the hypothesis of hybridization we analyzed nuclear Adh and ITS fragment sequences together with 12 nuclear microsatellites. These nuclear regions were selected based on their previously reported divergence between N. obliqua and N. alpina. The survey was conducted in 12 individuals from Lagunas de Epulauquen, and individuals from N. obliqua (8), N. alpina (1), N. macrocarpa (2), N. glauca (4) and N. leonii (2). By combining a phylogenetic analysis with a principal coordinate analysis of microsatellite data, we showed that Lagunas de Epulauquen individuals were closely related to other N. obliqua individuals, while hybridization with N. alpina was not detected. Our results indicate that hybridization processes could be discarded as the origin of the Lagunas de Epulauquen distinctiveness. The hypothesis of the convergence of two N. obliqua migratory routes at this latitude was reinforced based on detected patterns of genetic diversity. Notwithstanding, its high geographical isolation seems to be also a key evolutionary factor to explain the distinctiveness of this population. Lagunas de Epulauquen population could be therefore included within Argentinean N. obliqua domestication and conservation programs.

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Section: Discussionmentioning

confidence: 58%