Landscape barriers to pollen and seed flow in the dioecious tropical tree Astronium fraxinifolium in Brazilian savannah

Autor: Alexandre Magno Sebbenn, Marcelo A. M. Alcântara, Alexandre Marco da Silva, Ricardo de Oliveira Manoel, Mario Luiz Teixeira de Moraes, Celso Luis Marino, José Cambuim, Bruno C. Rossini, Maiara Ribeiro Cornacini
Přispěvatelé: Universidade Estadual Paulista (UNESP), Instituto Florestal de São Paulo
Jazyk: angličtina
Rok vydání: 2021
Předmět:
0106 biological sciences
0301 basic medicine
Conservation Biology
Population genetics
Plant Science
medicine.disease_cause
01 natural sciences
Gene flow
Trees
Data Management
Conservation Science
education.field_of_study
Multidisciplinary
Ecology
Plant Anatomy
Eukaryota
food and beverages
Phylogenetic Analysis
Plants
Phylogenetics
Seeds
Conservation Genetics
Pollen
Medicine
Brazil
Research Article
Gene Flow
Computer and Information Sciences
Ecological Metrics
Science
Population
Zoology
Biology
010603 evolutionary biology
03 medical and health sciences
medicine
Genetics
Evolutionary Systematics
education
Isolation by distance
Taxonomy
Genetic diversity
Evolutionary Biology
Pioneer species
Population Biology
Ecology and Environmental Sciences
Organisms
Biology and Life Sciences
Species Diversity
biology.organism_classification
030104 developmental biology
Astronium fraxinifolium
Genetic Loci
Population Genetics
Microsatellite Repeats
Zdroj: PLoS ONE, Vol 16, Iss 8, p e0255275 (2021)
PLoS ONE
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 1932-6203
Popis: Made available in DSpace on 2022-04-28T19:42:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-08-01 Gene flow studies provide information on gene exchange between populations, which is essential for developing genetic conservation strategies. Such analyses enable a better understanding of the life history and seed and pollen dispersal mechanisms of plant species. In this study, we investigate pollen and seed flow in a regenerant population of the pioneer species Astronium fraxinifolium in an area degraded during the construction of a hydroelectric dam. We mapped, sampled, sexed, and genotyped 386 individuals in the regenerant population (RP), as well as 128 adult trees located along two highways adjacent to the degraded area; one in Mato Grosso do Sul State (MS) and other in São Paulo State (SP). Parentage analyses was carried out for 370 individuals of the RP population, using as putative parents 348 individuals from RP and all 128 individuals sampled in MS and SP. Based on parentage analysis and eight microsatellite loci, our analyses revealed that for individuals of the RP with an identified father (pollen donor), 1.1% of the pollen was dispersed up to 532 m, while for those with an identified mother (seed donor), 0.5% of seeds were dispersed up to 4,782 m. However, a large proportion of pollen (76.5%) and seeds (57%) immigrated from trees outside the sampled populations. Pollen and seeds were dispersed through a pattern of isolation by distance. Genetic diversity was significantly similar between adults of both highway populations and individuals from RP, with significant levels of inbreeding detected only in RP. Our results demonstrate that the nearest trees contributed pollen and seeds for the recovery of the degraded area, indicating reproductive spatial isolation among the sampled populations due to the damming of the river. Such results help to understand the process of regeneration for A. fraxinifolium in regenerant populations to inform strategies for conservation and environmental recovery with this species. Copyright: Instituto de Biotecnologia/ UNESP Instituto de Biociências/ UNESP Faculdade de Engenharia de Ilha Solteira/UNESP Ilha Solteira Departamento de Melhoramento e Conservacão Genética Instituto Florestal de São Paulo Instituto de Biotecnologia/ UNESP Instituto de Biociências/ UNESP Faculdade de Engenharia de Ilha Solteira/UNESP Ilha Solteira
Databáze: OpenAIRE
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