کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5154988 | 1500396 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
East-west divergence in central Brazilian Cerrado revealed by cpDNA sequences of a bird-dispersed tree species
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Population genetic studies of plant species can contribute to understanding the evolutionary history of the Brazilian Cerrado, a highly threatened hotspot and the richest tropical savanna in the world. Therefore, this study aimed at investigating the diversity and genetic structure of Byrsonima coccolobifolia (Malpighiaceae), one of the most common tree species in the Brazilian Cerrado, focusing mainly on the central area of the biome. This is a bird-dispersed species, and studies targeting species with this seed dispersal syndrome are scarce. First, we performed a careful screening of cpDNA markers to identify regions suitable for intraspecific genetic studies, and then we investigated the diversity and genetic structure in ten populations of B. coccolobifolia. The cpDNA regions selected (trnS-trnG and trnH-trnK) revealed considerable divergence among populations and a striking geographical structure, separating populations in two groups, east and west. Although seed dispersal by birds is expected to reach long distances, our results strongly corroborate studies targeting trees with limited seed dispersal. This suggests that historical fragmentation of Cerrado (possibly during cold and dry periods of the Quaternary) might have limited long distance dispersal events after climate amelioration even in bird-dispersed species, especially while Cerrado was expanding but still fragmented.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical Systematics and Ecology - Volume 70, February 2017, Pages 247-253
Journal: Biochemical Systematics and Ecology - Volume 70, February 2017, Pages 247-253
نویسندگان
Luciana Cunha Resende-Moreira, Paula Nogueira de Vasconcelos, Andrea Portilho Souto, Alison Pelri Albuquerque Menezes, José Pires de Lemos-Filho, Maria Bernadete Lovato,