Phylogeography of Brazilian pine (Araucaria angustifolia): integrative evidence for pre-Columbian anthropogenic dispersal

Lauterjung, Miguel Busarello; Bernardi, Alison Paulo; Montagna, Tiago; Candido-Ribeiro, Rafael; Mantovani, Adelar; Reis, Maurício Sedrez dos

doi:10.1007/s11295-018-1250-4

Cited by 36 publications

(28 citation statements)

References 75 publications

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“…Based on cpDNA and a wide sample covering the whole distribution range of the species, Stefenon et al (2019) demonstrated the existence of three main genetic groups of araucaria: a Northern group (matching the northernmost group observed in this study), a central group and a southernmost group. Besides to southward forest expansion, the presence of glacial refugia in the northernmost and southernmost zones of araucaria distribution was the argument for explaining the species genetic structuring, although the anthropogenic influence in araucaria populations cannot be discarded (Stefenon et al 2008b;Lauterjung et al 2018).…”

Section: Patterns Of Genetic Structure and Spatially Explicit Models mentioning

confidence: 99%

“…Historically there is evidence of the species occurring in the northernmost region and then expansion to the southernmost region, especially as a result of the climatic oscillations (temperature and humidity). Recent studies based on plastid DNA sequence information revealed a structuring of araucaria populations with strong biogeographic patterns both at a regional sampling scale (Lauterjung et al 2018) and across the whole distribution range of the species in South America (Stefenon et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Genetic diversity and biogeographic determinants of population structure in Araucaria angustifolia (Bert.) O. Ktze

et al. 2020

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Araucaria (Araucaria angustifolia (Bert.) O. Ktze) is a primarily dioecious species threatened with extinction that plays an important social and economic role especially in the southern region of Brazil. The aim of this work is to investigate the diversity and likely determinants of genetic lineages in this species for conservation management. For this, a collection of 30-year-old Araucaria was used. Accessions collected from 12 sites across the species range were analyzed, with ten individuals per site. The SSR genotyping was conducted with 15 loci and the data were analyzed using several complementary approaches. Descriptive statistics among sampling sites were used and diversity was partitioned non-hierarchically to estimate the size and composition of genetic clusters using a Bayesian assignment method. To explore possible biological implications of differences between Niche Models and habitat suitability, a series of statistical procedures were used, and tests were carried out using the software ENM Tools and Maxent. Populations from the southernmost zone showed higher genetic variation and a lower inbreeding coefficient compared to the northernmost zone, which may correlate with their isolation. A positive relation between genetic differentiation and geographic distance was observed. Two genetic groups (southernmost and northernmost zones) were evident. The Niche modelling showed separate ranges for each genetic lineage suggesting that differences in selection pressure may be playing a role in the apparent differentiation and may be adaptive. Finally, an evident correlation was observed between genetic data and habitat suitability. The two distinct groups observed must be considered as independent units for conservation and hybridization in breeding programs.

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Section: Patterns Of Genetic Structure and Spatially Explicit Models mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic diversity and biogeographic determinants of population structure in Araucaria angustifolia (Bert.) O. Ktze

et al. 2020

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“…All species of T. (Nectarodiaeta) seem to be associated with forest environments, especially the so-called mixed ombrophilous forests, characterized by the outstanding presence of Araucaria angustifolia Kuntze trees (Freitas & Silveira, 2017). This same distributional pattern was recognized for different plant species by Simpson (1979) and for different bee lineages by Silveira & Cure (1993) and Silveira (2009), and could be explained as resulting from the expansions and retractions of those forests during the Quaternary (Kershaw & Wagstaff, 2001;de Souza et al, 2009;Lauterjung et al, 2018). Within this subgenus, T. (Nectarodiaeta) oliveirae may be the single exception to this forest association, being known only from regions without forested environments.…”

Section: Biogeographymentioning

confidence: 82%

A phylogenetic study of the Thygater‐Trichocerapis group and new scopes for the subgenera of Thygater Holmberg, (Hymenoptera, Apidae)

Freitas

Júnior

Santos

et al. 2019

Systematic Entomology

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The bee tribe Eucerini is a large monophyletic taxon occurring in all continents, except Oceania and Antarctica, but far more diverse in the Americas and, especially, in the Neotropics. The phylogenetic relationships within its subtribe Eucerina, which contains the bulk of Eucerini diversity, is poorly understood, this being especially true for the relationships among its Neotropical representatives, which have been poorly represented in all phylogenetic studies, including Eucerini, to date. This leads to a generalized lack of confidence on the monophyly of the groups currently accepted as genera and subgenera. Here, a phylogenetic study based on three molecular markers (COI, 18S, and 28S, totalling about 1700 bp) and 58 morphological characters is presented as a contribution to the understanding of the relationships of the so‐called Thygater‐Trichocerapis group, and especially of the genus Thygater Holmberg, which has not previously been extensively sampled. Representatives of Trichocerapis, including its monotypic subgenus T. (Dithygater), are included for the first time in a phylogenetic study. The main results were: (i) support for the monophyly of the Thygater‐Trichocerapis group; (ii) support for the monophyly of Thygater; (iii) recognition of two main clades in Thygater, each one containing the type species of one of the previously recognized subgenera; and (iv) additional support for the position of Alloscirtetica as sister to all remaining Eucerina. Based on these results a redefinition of the scope of the two subgenera of Thygater is proposed, with changes in the subordination of three of its species, T. (Nectarodiaeta) chaetaspis comb.n., T. (Nectarodiaeta) paranaensis comb.n. and T. (Thygater) mexicana comb.n.

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“…It occurs naturally from Rio Grande do Sul (RS) in the south to Minas Gerais (MG) in the southeastern regions of Brazil (Carvalho 2002). Phylogeography studies show that in the past, pre-Columbian humans played an important role in the dispersion of A. angustifolia, demonstrating signs of recent and rapid expansion (Lauterjung et al 2018). However, due to logging, especially between the 1930 s and 1950s, the species now occupies about 1 or 2% of its original area (Guerra et al 2000) and is currently regarded as highly endangered (IUCN 2016).…”

Section: Introductionmentioning

confidence: 99%

Viability of recalcitrant Araucaria angustifolia seeds in storage and in a soil seed bank

et al. 2019

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Araucaria angustifolia (Bertol.) Kuntze is a representative species of the Mixed Ombrophilous Forest in the Atlantic Forest Biome of Brazil. The development of a germplasm conservation protocol for long-term seed bank storage is compromised for this species, as it is sensitive to desiccation. Furthermore, in situ establishment of a soil seed bank in its natural habitat may be limited. This study evaluates the storability of two provenances of A. angustifolia seeds and their behavior in an artificial soil seed bank in two forest environments (understory and edge). Results show that both seed provenances may be stored at 5°C for approximately 12 months, retaining high viability. The subsequent decrease in germination was associated with a reduction and an increase in seed water content, as well as with increased electrical conductivity. In the understory environment, seed viability was above 85% for the first 60 days, and at the end of the experiment (270 days), seedlings emerged. However, at the forest edge, there was a total loss of seed viability after 120 days associated with a reduction in water content and high predation. It is concluded, therefore, that short-term storage of A. angustifolia seeds is possible in a cold room, which is fundamental to supply seed demand outside the production period. Forest cover conservation is important for regeneration and conservation of the species.

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Phylogeography of Brazilian pine (Araucaria angustifolia): integrative evidence for pre-Columbian anthropogenic dispersal

Cited by 36 publications

References 75 publications

Genetic diversity and biogeographic determinants of population structure in Araucaria angustifolia (Bert.) O. Ktze

Genetic diversity and biogeographic determinants of population structure in Araucaria angustifolia (Bert.) O. Ktze

A phylogenetic study of the Thygater‐Trichocerapis group and new scopes for the subgenera of Thygater Holmberg, (Hymenoptera, Apidae)

Viability of recalcitrant Araucaria angustifolia seeds in storage and in a soil seed bank

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