By Animal, Water, or Wind: Can Dispersal Mode Predict Genetic Connectivity in Riverine Plant Species?

Autor(es)

Nazareno, Alison G. ^{[1, 2, 3]} ; Knowles, L. Lacey ^[2] ; Dick, Christopher W. ^{[4, 2]} ; Lohmann, Lucia G. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Bot, Sao Paulo - Brazil

^[2] Univ Michigan, Dept Ecol & Evolutionary Biol, Ann Arbor, MI 48109 - USA

^[3] Univ Fed Minas Gerais, Dept Genet Ecol & Evolut, Belo Horizonte, MG - Brazil

^[4] Smithsonian Trop Res Inst, Panama City - Panama

• Tipo de documento: Artigo Científico
• Fonte: FRONTIERS IN PLANT SCIENCE; v. 12, FEB 12 2021.
• Citações Web of Science: 0

Resumo

Seed dispersal is crucial to gene flow among plant populations. Although the effects of geographic distance and barriers to gene flow are well studied in many systems, it is unclear how seed dispersal mediates gene flow in conjunction with interacting effects of geographic distance and barriers. To test whether distinct seed dispersal modes (i.e., hydrochory, anemochory, and zoochory) have a consistent effect on the level of genetic connectivity (i.e., gene flow) among populations of riverine plant species, we used unlinked single-nucleotide polymorphisms (SNPs) for eight co-distributed plant species sampled across the Rio Branco, a putative biogeographic barrier in the Amazon basin. We found that animal-dispersed plant species exhibited higher levels of genetic diversity and lack of inbreeding as a result of the stronger genetic connectivity than plant species whose seeds are dispersed by water or wind. Interestingly, our results also indicated that the Rio Branco facilitates gene dispersal for all plant species analyzed, irrespective of their mode of dispersal. Even at a small spatial scale, our findings suggest that ecology rather than geography play a key role in shaping the evolutionary history of plants in the Amazon basin. These results may help improve conservation and management policies in Amazonian riparian forests, where degradation and deforestation rates are high. (AU)

• Processo FAPESP: 15/07141-4 - Testando a hipótese dos rios como barreira biogeográfica para espécies de plantas da Amazônia
• Beneficiário: Alison Gonçalves Nazareno
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 12/50260-6 - Estruturação e evolução da biota amazônica e seu ambiente: uma abordagem integrativa
• Beneficiário: Lúcia Garcez Lohmann
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 13/12633-8 - Filogeografia comparada de plantas na Amazônia Central
• Beneficiário: Alison Gonçalves Nazareno
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/02302-5 - Cruzando os rios amazônicos: um estudo comparativo entre plantas com distintas histórias de vida
• Beneficiário: Alison Gonçalves Nazareno
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado