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Marques AR, Resende AA, Gomes FCO, Santos ARO, Rosa CA, Duarte AA, de Lemos-Filho JP, Dos Santos VL. Plant growth-promoting traits of yeasts isolated from the tank bromeliad Vriesea minarum L.B. Smith and the effectiveness of Carlosrosaea vrieseae for promoting bromeliad growth. Braz J Microbiol 2021; 52:1417-1429. [PMID: 33956333 DOI: 10.1007/s42770-021-00496-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 04/08/2021] [Indexed: 12/01/2022] Open
Abstract
Yeasts can play important roles in promoting plant growth; however, little information is available in this regard for yeasts in water of bromeliad tanks. Here, we characterize the ability of 79 yeast isolates from tank bromeliad Vriesea minarum, an endangered species, to solubilize phosphate, secrete siderophores, and synthesize indole-3-acetic acid (IAA). The results showed that 67.8% of all assayed yeast isolates mobilized inorganic phosphate; 40.0% secreted siderophores; and 89.9% synthetized IAA and IAA-like compounds. Among the species studied, Carlosrosaea vrieseae UFMG-CM-Y6724 is highlighted for producing IAA (76.1 μg mL-1) and siderophores, and solubilizing phosphate. In addition, evaluation of the effects of filtrate containing IAA-like compounds produced by the C. vrieseae on the development and photosynthetic performance of V. minarum seedlings found it to improve seedling growth equal to that of commercial IAA. These results demonstrate that C. vrieseae can produce compounds with great potential for future use as biofertilizer agents.
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Affiliation(s)
- Andréa R Marques
- Department of Biological Sciences, Centro Federal de Educação Tecnológica de Minas Gerais - CEFET/MG, Av. Amazonas, 5253, Nova Suíça, 30.421-169, Belo Horizonte, MG, 30421-169, Brazil.
| | - Alessandra A Resende
- Expertise Center Botany and Biodiversity, Museu de História Natural e Jardim Botânico, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31080-010, Brazil
| | - Fátima C O Gomes
- Department of Chemistry, Centro Federal de Educação Tecnológica de Minas Gerais, Belo Horizonte, MG, 30421-169, Brazil
| | - Ana Raquel O Santos
- Department of Microbiology, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Carlos A Rosa
- Department of Microbiology, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Alexandre A Duarte
- Department of Botany, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - José Pires de Lemos-Filho
- Department of Botany, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Vera Lúcia Dos Santos
- Department of Microbiology, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
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From micro- to macroevolution: insights from a Neotropical bromeliad with high population genetic structure adapted to rock outcrops. Heredity (Edinb) 2020; 125:353-370. [PMID: 32681156 DOI: 10.1038/s41437-020-0342-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 07/03/2020] [Accepted: 07/07/2020] [Indexed: 12/15/2022] Open
Abstract
Geographic isolation and reduced population sizes can lead to local extinction, low efficacy of selection and decreased speciation. However, population differentiation is an essential step of biological diversification. In allopatric speciation, geographically isolated populations differentiate and persist until the evolution of reproductive isolation and ecological divergence completes the speciation process. Pitcairnia flammea allows us to study the evolutionary consequences of habitat fragmentation on naturally disjoint rock-outcrop species from the Brazilian Atlantic Rainforest (BAF). Our main results showed low-to-moderate genetic diversity within populations, and deep population structuring caused by limited gene flow, low connectivity, genetic drift and inbreeding of long-term isolation and persistence of rock-outcrop populations throughout Quaternary climatic oscillations. Bayesian phylogenetic and model-based clustering analyses found no clear northern and southern phylogeographic structure commonly reported for many BAF organisms. Although we found two main lineages diverging by ~2 Mya during the early Pleistocene, species' delimitation analysis assigned most of the populations as independent evolving entities, suggesting an important role of disjoint rock outcrops in promoting high endemism in this rich biome. Lastly, we detected limited gene flow in sympatric populations although some hybridization and introgression were observed, suggesting a continuous speciation process in this species complex. Our data not only inform us about the extensive differentiation and limited gene flow found among Pitcairnia flammea species complex, but they also contain information about the mechanisms that shape the genetic architecture of small and fragmented populations of isolated rock outcrop of recently radiated plants.
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Conservation, spatial distribution, and endemism of Pilosocereus cacti in xeric environments of the Neotropics. J Nat Conserv 2020. [DOI: 10.1016/j.jnc.2020.125825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Rogalski JM, Reis A, Rogalski M, Montagna T, Dos Reis MS. Mating System and Genetic Structure Across All Known Populations of Dyckia brevifolia: A Clonal, Endemic, and Endangered Rheophyte Bromeliad. J Hered 2020; 108:299-307. [PMID: 28199659 DOI: 10.1093/jhered/esx011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 02/10/2017] [Indexed: 11/14/2022] Open
Abstract
Dyckia brevifolia is an endemic rheophyte bromeliad that occurs exclusively in patches on rocky banks of the Itajaí-Açu River in southern Brazil. The genetic diversity of all known populations was carried out using allozyme markers and the total numbers of rosettes, reproductive rosettes, and clumps per population were characterized. The mating system was also investigated. Most rosettes were aggregated in groups, and the populations differed significantly in number of rosettes and reproductive rosettes per population. The outcrossing rate obtained was 8.2%, with predominant selfing. The populations presented an average of 1.4 alleles per locus and 27% of polymorphisms. The mean expected genetic diversity was 0.067. Downstream populations showed the highest genetic diversity which could be attributed to hydrochory (unidirectional river flow). Most genetic diversity is distributed among populations (F^ST = 0.402). Natural habitats of D. brevifolia are not recommended for the construction of hydroelectric plants given that it would seriously complicate in situ conservation of this species. Based on the results of this study, it can be concluded that between 35 and 161 reproductive rosettes must be collected for effective ex situ conservation, depending on the targeted population, or seeds collected from 157 seed-rosettes per population.
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Affiliation(s)
- Juliana Marcia Rogalski
- From the Núcleo de Ciências Biológicas e Ambientais, Instituto Federal do Rio Grande do Sul, Rodovia RS 135, Km 25, Distrito Engenheiro Luiz Englert, Caixa Postal 21, Sertão, 99170-000, RS, Brazil (J. M. Rogalski); Herbário Barbosa Rodrigues, Centro, Itajaí, Brazil (Reis); Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil (M. Rogalski); and Núcleo de Pesquisas em Florestas Tropicais, Universidade Federal de Santa Catarina, Florianópolis, Brazil (Montagna and dos Reis)
| | - Ademir Reis
- From the Núcleo de Ciências Biológicas e Ambientais, Instituto Federal do Rio Grande do Sul, Rodovia RS 135, Km 25, Distrito Engenheiro Luiz Englert, Caixa Postal 21, Sertão, 99170-000, RS, Brazil (J. M. Rogalski); Herbário Barbosa Rodrigues, Centro, Itajaí, Brazil (Reis); Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil (M. Rogalski); and Núcleo de Pesquisas em Florestas Tropicais, Universidade Federal de Santa Catarina, Florianópolis, Brazil (Montagna and dos Reis)
| | - Marcelo Rogalski
- From the Núcleo de Ciências Biológicas e Ambientais, Instituto Federal do Rio Grande do Sul, Rodovia RS 135, Km 25, Distrito Engenheiro Luiz Englert, Caixa Postal 21, Sertão, 99170-000, RS, Brazil (J. M. Rogalski); Herbário Barbosa Rodrigues, Centro, Itajaí, Brazil (Reis); Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil (M. Rogalski); and Núcleo de Pesquisas em Florestas Tropicais, Universidade Federal de Santa Catarina, Florianópolis, Brazil (Montagna and dos Reis)
| | - Tiago Montagna
- From the Núcleo de Ciências Biológicas e Ambientais, Instituto Federal do Rio Grande do Sul, Rodovia RS 135, Km 25, Distrito Engenheiro Luiz Englert, Caixa Postal 21, Sertão, 99170-000, RS, Brazil (J. M. Rogalski); Herbário Barbosa Rodrigues, Centro, Itajaí, Brazil (Reis); Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil (M. Rogalski); and Núcleo de Pesquisas em Florestas Tropicais, Universidade Federal de Santa Catarina, Florianópolis, Brazil (Montagna and dos Reis)
| | - Maurício Sedrez Dos Reis
- From the Núcleo de Ciências Biológicas e Ambientais, Instituto Federal do Rio Grande do Sul, Rodovia RS 135, Km 25, Distrito Engenheiro Luiz Englert, Caixa Postal 21, Sertão, 99170-000, RS, Brazil (J. M. Rogalski); Herbário Barbosa Rodrigues, Centro, Itajaí, Brazil (Reis); Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Brazil (M. Rogalski); and Núcleo de Pesquisas em Florestas Tropicais, Universidade Federal de Santa Catarina, Florianópolis, Brazil (Montagna and dos Reis)
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Manhães VDC, de Miranda FD, Clarindo WR, Carrijo TT. Genetic diversity and karyotype of Pitcairnia azouryi: an endangered species of Bromeliaceae endemic to Atlantic Forest inselbergs. Mol Biol Rep 2019; 47:179-189. [PMID: 31587186 DOI: 10.1007/s11033-019-05118-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 10/01/2019] [Indexed: 11/27/2022]
Abstract
Plant species of various families, such as those of Bromeliaceae, occur on inselbergs where they are subject to geographic isolation and environmental conditions that can lead to genetic erosion. This, in turn, can result in the loss of natural populations due to homozygosis, or changes in ploidy that may lead to reproductive isolation. The genetic diversity of five natural populations of Pitcairnia azouryi was measured using nine microsatellite markers transferred from P. albiflos and P. geyskesii. Chromosome numbers and nuclear DNA content were also evaluated. The results indicated moderate genetic differentiation among populations (FST = 0.188), and significant gene flow (Nm = 1.073) in four of the five populations. P. azouryi has, predominantly, 2n = 50 chromosomes and DNA content of 2C = 1.16 pg, but the tetraploid condition was found (2n = 100 and 2C = 2.32 pg) in seedlings of an individual of the most geographically isolated population. The moderate level of genetic structuring observed for P. azouryi seems to be related to its disjoint geographical distribution and the locally aggregated spatial structure of the populations, which are isolated from each other, hindering the inter and intrapopulational gene flow. This interpretation was also evidenced by the mantel test (r = 0.777, P < 0.05). The occurrence of diploid individuals with tetraploid seedlings is indicative of events of eupolyploidization, possibly due to the environmental conditions of this geographically isolated population.
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Affiliation(s)
- Vitor da Cunha Manhães
- Programa de Pós-graduação em Genética e Melhoramento, Universidade Federal do Espírito Santo, Centro de Ciências Agrárias e Engenharias, Alto Universitário s.n., Guararema, Alegre, ES, CEP 29500-000, Brazil.
- Programa de Pós-graduação em Botânica, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, São Cristóvão, Rio De Janeiro, Rio de Janeiro, 20940-040, Brazil.
| | - Fábio Demolinari de Miranda
- Programa de Pós-graduação em Genética e Melhoramento, Universidade Federal do Espírito Santo, Centro de Ciências Agrárias e Engenharias, Alto Universitário s.n., Guararema, Alegre, ES, CEP 29500-000, Brazil
| | - Wellington Ronildo Clarindo
- Programa de Pós-graduação em Genética e Melhoramento, Universidade Federal do Espírito Santo, Centro de Ciências Agrárias e Engenharias, Alto Universitário s.n., Guararema, Alegre, ES, CEP 29500-000, Brazil
| | - Tatiana Tavares Carrijo
- Programa de Pós-graduação em Genética e Melhoramento, Universidade Federal do Espírito Santo, Centro de Ciências Agrárias e Engenharias, Alto Universitário s.n., Guararema, Alegre, ES, CEP 29500-000, Brazil
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Gomes M, Ferreira RL, Ruchkys ÚDA. Landscape evolution in ferruginous geosystems of the Iron Quadrangle, Brazil: a speleological approach in a biodiversity hotspot. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1139-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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7
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Aguiar-Melo C, Zanella CM, Goetze M, Palma-Silva C, Hirsch LD, Neves B, da Costa AF, Bered F. Ecological niche modeling and a lack of phylogeographic structure in Vriesea incurvata suggest historically stable areas in the southern Atlantic Forest. AMERICAN JOURNAL OF BOTANY 2019; 106:971-983. [PMID: 31247130 DOI: 10.1002/ajb2.1317] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/18/2019] [Indexed: 06/09/2023]
Abstract
PREMISE Despite the efforts to understand the processes that shape neotropical biodiversity, the complexity of certain biomes, such as the Atlantic Forest (AF), prevents the generalization of patterns. Initially, ecological niche modeling (ENM), with phylogeographic studies, identified past stable areas in the central and northern portions of the AF, while the southern portion was thought to be highly fragmented. Here, we examined the phylogeography, historical patterns, genetic diversity, and population structure of Vriesea incurvata, an endemic species of the southern portion of the AF. METHODS We evaluated 149 individuals using two plastid DNA regions (cpDNA) and 13 nuclear microsatellite markers (nuSSRs) to access the historical patterns, genetic diversity, and structure of V. incurvata populations. We also conducted historical demography and ENM analyses. RESULTS We found moderate to high genetic diversity and low population structure for both genomes. The cpDNA network revealed high haplotype sharing. The ENM suggested no drastic changes in suitable areas for V. incurvata occurrence, corroborating the finding of no phylogeographic structure. CONCLUSIONS Contrary to some studies, our results indicate that the southern AF was a historically stable climate region for V. incurvata occupation after southward colonization by the species. Past climatic changes probably did not cause structuring among its populations.
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Affiliation(s)
- Camila Aguiar-Melo
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Programa de Pós-graduação em Genética e Biologia Molecular, Avenida Bento Gonçalves 9500, P.O. Box 15053, 91501-970, Porto Alegre, RS, Brazil
| | - Camila M Zanella
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Programa de Pós-graduação em Genética e Biologia Molecular, Avenida Bento Gonçalves 9500, P.O. Box 15053, 91501-970, Porto Alegre, RS, Brazil
- National Institute of Agricultural Botany (NIAB), Huntingdon Road, CB30LE, Cambridge, UK
| | - Márcia Goetze
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Programa de Pós-graduação em Genética e Biologia Molecular, Avenida Bento Gonçalves 9500, P.O. Box 15053, 91501-970, Porto Alegre, RS, Brazil
| | - Clarisse Palma-Silva
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, 13083-862, Campinas, SP, Brazil
| | - Luiza D Hirsch
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Programa de Pós-graduação em Genética e Biologia Molecular, Avenida Bento Gonçalves 9500, P.O. Box 15053, 91501-970, Porto Alegre, RS, Brazil
| | - Beatriz Neves
- Departamento de Botânica, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, São Cristóvão 20940-040, Rio de Janeiro, RJ, Brazil
| | - Andrea F da Costa
- Departamento de Botânica, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, São Cristóvão 20940-040, Rio de Janeiro, RJ, Brazil
| | - Fernanda Bered
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Programa de Pós-graduação em Genética e Biologia Molecular, Avenida Bento Gonçalves 9500, P.O. Box 15053, 91501-970, Porto Alegre, RS, Brazil
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8
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Byrne M, Krauss SL, Millar MA, Elliott CP, Coates DJ, Yates C, Binks RM, Nevill P, Nistelberger H, Wardell-Johnson G, Robinson T, Butcher R, Barrett M, Gibson N. Persistence and stochasticity are key determinants of genetic diversity in plants associated with banded iron formation inselbergs. Biol Rev Camb Philos Soc 2018; 94:753-772. [PMID: 30479069 DOI: 10.1111/brv.12477] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 10/02/2018] [Accepted: 10/08/2018] [Indexed: 01/19/2023]
Abstract
The high species endemism characteristic of many of the world's terrestrial island systems provides a model for studying evolutionary patterns and processes, yet there has been no synthesis of studies to provide a systematic evaluation of terrestrial island systems in this context. The banded iron formations (BIFs) of south-western Australia are ancient terrestrial island formations occurring within a mosaic of alluvial clay soils, sandplains and occasional granite outcropping, across an old, gently undulating, highly weathered, plateau. Notably, these BIFs display exceptionally high beta plant diversity. Here, we address the determinants and consequences of genetic diversity for BIF-associated plant species through a comprehensive review of all studies on species distribution modelling, phylogenetics, phylogeography, population genetics, life-history traits and ecology. The taxa studied are predominantly narrowly endemic to individual or a few BIF ranges, but some have more regional distributions occurring both on and off BIFs. We compared genetic data for these BIF-endemic species to other localised species globally to assess whether the unique history and ancestry of BIF landscapes has driven distinct genetic responses in plants restricted to this habitat. We also assessed the influence of life-history parameters on patterns of genetic diversity. We found that BIF-endemic species display similar patterns of genetic diversity and structure to other species with localised distributions. Despite often highly restricted distributions, large effective population size or clonal reproduction appears to provide these BIF-endemic species with ecological and evolutionary resilience to environmental stochasticity. We conclude that persistence and stochasticity are key determinants of genetic diversity and its spatial structure within BIF-associated plant species, and that these are key evolutionary processes that should be considered in understanding the biogeography of inselbergs worldwide.
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Affiliation(s)
- Margaret Byrne
- Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre, Perth, WA, 6983, Australia.,School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia.,School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia
| | - Siegfried L Krauss
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia.,Kings Park Science, Department of Biodiversity, Conservation and Attractions, 2 Kattidj Close, Kings Park, Perth, WA, 6005, Australia
| | - Melissa A Millar
- Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre, Perth, WA, 6983, Australia
| | - Carole P Elliott
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia.,Kings Park Science, Department of Biodiversity, Conservation and Attractions, 2 Kattidj Close, Kings Park, Perth, WA, 6005, Australia
| | - David J Coates
- Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre, Perth, WA, 6983, Australia
| | - Colin Yates
- Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre, Perth, WA, 6983, Australia
| | - Rachel M Binks
- Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre, Perth, WA, 6983, Australia
| | - Paul Nevill
- ARC Centre for Mine Site Restoration, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia
| | - Heidi Nistelberger
- Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre, Perth, WA, 6983, Australia.,School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Grant Wardell-Johnson
- ARC Centre for Mine Site Restoration, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia
| | - Todd Robinson
- School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia
| | - Ryonen Butcher
- Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre, Perth, WA, 6983, Australia
| | - Matthew Barrett
- Kings Park Science, Department of Biodiversity, Conservation and Attractions, 2 Kattidj Close, Kings Park, Perth, WA, 6005, Australia
| | - Neil Gibson
- Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre, Perth, WA, 6983, Australia.,School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
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Soares LE, Goetze M, Zanella CM, Bered F. Genetic diversity and population structure of Vriesea reitzii (Bromeliaceae), a species from the Southern Brazilian Highlands. Genet Mol Biol 2018; 41:308-317. [PMID: 29583153 PMCID: PMC5913716 DOI: 10.1590/1678-4685-gmb-2017-0062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 07/22/2017] [Indexed: 12/01/2022] Open
Abstract
The Southern Brazilian Highlands are composed by a mosaic of Mixed Ombrophilous Forest (MOF) and grassland formations, an interesting landscape for the study of population structure. We analyzed the genetic diversity within and among populations of the MOF-endemic bromeliad Vriesea reitzii by genotyping seven nuclear microsatellite loci in 187 individuals from six populations. We characterized levels of genetic diversity and assessed the genetic structure among populations. Vriesea reitzii populations showed high levels of genetic variation (number of alleles 28 - 43, allelic richness 3.589 - 5.531) and moderate levels of genetic differentiation (FST = 0.123, RST = 0.096). The high levels of genetic diversity may be explained by species life-history traits, such as habit and mating system. The moderate structure may be a product of the combination of ancient and contemporary gene flow, resulting from the expansion of the forest in the Holocene, and/or due to facilitated dispersal mediated by the MOF’s mosaic landscape. The genetic results indicated no imminent threat to this bromeliad. However, the species is highly associated with the MOF, putting landscape conservation at the center of conservation efforts for the species’ maintenance.
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Affiliation(s)
- Luis Eduardo Soares
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Programa de Pós-graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil.,Department of Molecular Developmental Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Radboud University, Nijmegen, The Netherlands
| | - Márcia Goetze
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Programa de Pós-graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil
| | - Camila M Zanella
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Programa de Pós-graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil.,The John Bingham Laboratory, National Institute of Agricultural Botany (NIAB), Cambridge, UK
| | - Fernanda Bered
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Programa de Pós-graduação em Genética e Biologia Molecular, Porto Alegre, RS, Brazil
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Alves M, Trovó M, Forzza RC, Viana P. Overview of the systematics and diversity of Poales in the Neotropics with emphasis on the Brazilian flora. RODRIGUÉSIA 2015. [DOI: 10.1590/2175-7860201566203] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Fryday S, Tiede K, Stein J. Scientific services to support EFSA systematic reviews: Lot 5 Systematic literature review on the neonicotinoids (namely active substances clothianidin, thiamethoxam and imidacloprid) and the risks to bees (Tender specifications RC/EFSA/PRAS/2013/03). ACTA ACUST UNITED AC 2015. [DOI: 10.2903/sp.efsa.2015.en-756] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Genetic variation in Aechmea winkleri, a bromeliad from an inland Atlantic rainforest fragment in Southern Brazil. BIOCHEM SYST ECOL 2015. [DOI: 10.1016/j.bse.2014.12.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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