Phylogeography of plastid DNA sequences suggests post-glacial southward demographic expansion and the existence of several glacial refugia for Araucaria angustifolia

Scientific Reports
Valdir M StefenonRubens Onofre Nodari

Abstract

Despite the high diversity of the Southern South American environments, the patterns and processes driving both their species diversity and demographic history are still poorly known and are a challenging task. In this study, we evaluate plastid DNA sequences of the conifer species Araucaria angustifolia aiming to (i) assess the species genetic structure within its main range of occurrence, (ii) infer its population demographic history, looking for evidence of southward expansion, (iii) search for evidence of glacial refugia within the species distribution area and (iv) discuss some conservation and management strategies for this species. Twenty haplotypes were identified, revealing the presence of three distinct genetic groups across the geographic range of the species and structuring the populations into Northern, Central and Southern groups. Our results suggest the occurrence of post-glacial expansion of A. angustifolia towards the south, as well as the existence of at least three refugia within the species occurrence area. Testing the occurrence of historical demographic expansion, we suggest that genetic groups experienced fluctuations in effective size, associated to a structured distribution of populations. The identific...Continue Reading

References

Apr 1, 1975·Theoretical Population Biology·G A Watterson
May 20, 1999·Molecular Biology and Evolution·H J BandeltA Röhl
Mar 8, 2000·Nature·N MyersJ Kent
Apr 27, 2001·Nature·C S TroyD G Bradley
Nov 26, 2002·Molecular Biology and Evolution·Sebastian E Ramos-Onsins, Julio Rozas
Nov 28, 2002·Molecular Ecology·I DupanloupL Excoffier
Apr 23, 2004·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·G M Hewitt
Feb 7, 2009·Science·Ana Carolina CarnavalCraig Moritz
May 14, 2011·Molecular Ecology Resources·Laurent Excoffier, Heidi E L Lischer
Feb 24, 2012·Systematic Biology·Fredrik RonquistJohn P Huelsenbeck
Jul 4, 2012·Molecular Phylogenetics and Evolution·Andreia C Turchetto-ZoletRogerio Margis
Jan 3, 2013·Molecular Ecology·A C Turchetto-ZoletC Palma-Silva
Oct 18, 2013·Molecular Biology and Evolution·Koichiro TamuraSudhir Kumar
Apr 12, 2014·PLoS Computational Biology·Remco BouckaertAlexei J Drummond
May 19, 2018·Scientific Reports·Mark RobinsonJosé Iriarte

❮ Previous
Next ❯

Methods Mentioned

BETA
PCR
electrophoresis

Software Mentioned

Tracer
SAMOVA
Arlequin
MaxEnt
AMOVA
Sequence Analyzer
MrBayes
WorldClim
DnaSP
CLC Genomics Workbench

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.