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• W4386524787 abstract "The study of intraspecific variability of alien plants is crucial for revealing the patterns of their microevolution in the secondary distribution range and predicting the possibility of further dispersal and the ability to invade natural plant communities. It is still unclear how a genetically impoverished initial invasive population forms a taxon with a range exceeding the natural range of the species and, therefore, adapted to more diverse ecological and climatic conditions. Boxelder, Acer negundo L., is a remarkable object of study in this respect. The secondary distribution range of this North American species covers all regions of our plane excluding Antarctica. In Russia it spread from Kaliningrad to Vladivostok, formed invasive populations in all eight Federal Districts and was included in the TOP 100 of the most aggressive invasive species of the country. The intraspecific variability of its biomorphological characters was studied by us earlier, and the results of the study of genotypic variability are presented in this article. Invasive populations of A. negundo located along the Trans-Siberian Railway from Moscow to Vladivostok (9288 km) were examined. We isolated DNA from 38 specimens collected along the Trans-Siberian railway in Vladimir and Kostroma Regions, Republic of Tatarstan, Perm Region, Novosibirsk Region, Krasnoyarsk Territory, Amur Region, and Primorskii Territory. By the ITS 1-2 nuclear DNA site, specimens of Acer negundo from the Russian part of the secondary distribution range showed very high similarity with each other, but with 100% bootstrap support separated from specimens from the natural distribution range. According to the chloroplast high-variable trnL-trnF site, the specimens were divided into two clades that weakly correlated with the geographical origin of the specimen. Separate subclades with high bootstrap support are formed by the plants: 1) from Tatarstan (Kazan and Nizhnekamsk), 2) from Perm and Novosibirsk, and 3) samples from Krasnoyarsk. The haplotype network constructed at the trnL-trnF site also demonstrated the genetic specificity of the samples from Tatarstan. We hypothesized that only a few genotypes of A. negundo with a high degree of invasive activity were dispersed along the Trans-Siberian Railway (and possibly throughout all Russia). Other genotypes, including those that entered the territory of the former Russian Empire earlier, have not shown the ability to invade natural plant communities and occur rather rarely." @default.
• W4386524787 created "2023-09-08" @default.
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• W4386524787 date "2023-09-06" @default.
• W4386524787 modified "2023-10-16" @default.
• W4386524787 title "GENOTYPIC VARIABILITY OF ACER NEGUNDO L. ALONG THE TRANS-SIBERIAN RAILWAY" @default.
• W4386524787 doi "https://doi.org/10.35885/1996-1499-16-3-19-29" @default.
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