NDLI: Biogeographic history of the threatened species Araucaria araucana (Molina) K. Koch and implications for conservation: a case study with organelle DNA markers

Content Provider	Springer Nature Link
Author	Marchelli, P. Baier, C. Mengel, C. Ziegenhagen, B. Gallo, L. A.
Copyright Year	2009
Abstract	Fragmentation of the habitat due to glaciations, fires and human activities affected the distribution range of Araucaria araucana in southern South America. On the borders of the Argentinean Patagonian steppe, the species is restricted to isolated patches without natural regeneration. Our objective is to test the hypothesis that these populations are relicts of pre-Pleistocene origin. A total of 224 individuals from 16 populations were sampled. Twenty chloroplast microsatellites, 19 non-coding chloroplast DNA regions and eight mitochondrial DNA fragments were screened for polymorphisms. A low transferability rate of universal primers from Pinaceae and also a low variation were detected for this ancient species. Only one non-coding region of the chloroplast DNA showed polymorphism allowing the identification of five haplotypes. A low genetic differentiation (G ST = 0.11; G′ ST = 0.267) and lack of geographic structure was found. Allelic richness was lower and genetic differentiation higher among the eastern isolated populations, suggesting a long lasting persistence. Conservation guidelines are given for these relictual populations, which are located outside the limits of the National Parks.
Starting Page	951
Ending Page	963
Page Count	13
File Format	PDF
ISSN	15660621
Journal	Conservation Genetics
Volume Number	11
Issue Number	3
e-ISSN	15729737
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-05-29
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geographical genetic structure Chloroplast DNA Mitochondrial DNA Patagonian temperate forests Monkey puzzle tree Fragmentation Plant Sciences Evolutionary Biology Conservation Biology/Ecology Animal Anatomy / Morphology / Histology
Content Type	Text
Resource Type	Article
Subject	Genetics Ecology, Evolution, Behavior and Systematics

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