Article
Biodiversity Conservation
Jacopo Calevo, Roberta Gargiulo, Leif Bersweden, Juan Viruel, Cristina Gonzalez-Montelongo, Khellaf Rebbas, Lamia Boutabia, Michael F. Fay
Summary: Orchis patens sensu lato is a threatened species with complex population structure, exhibiting significant genetic differentiation between Italy, Algeria, and the Canary Islands, highlighting the need for immediate conservation actions to prevent further fragmentation and decline.
BIODIVERSITY AND CONSERVATION
(2021)
Article
Ecology
Barbara Simoes Santos Leal, Cleber Juliano Neves Chaves, Vanessa Araujo Graciano, Christophe Boury, Luis Alberto Pillaca Huacre, Myriam Heuertz, Clarisse Palma-Silva
Summary: Genetic drift and divergent selection are important factors affecting population differentiation in the herbaceous perennial plant Pitcairnia lanuginosa. The study showed extremely low genetic diversity and significant population differentiation, suggesting a major role of genetic drift. Divergent selection on drought tolerance traits was also observed among populations in the Cerrado region.
Article
Biochemistry & Molecular Biology
Alexander S. T. Papadopulos, Andrew J. Helmstetter, Owen G. Osborne, Aaron A. Comeault, Daniel P. Wood, Edward A. Straw, Laurence Mason, Michael F. Fay, Joe Parker, Luke T. Dunning, Andrew D. Foote, Rhian J. Smith, Jackie Lighten
Summary: Evolutionary responses to human-mediated environmental change, such as pollution, in the wild plant Silene uniflora have been found to be complex and polygenic. Although rapid adaptation to extreme conditions like zinc contamination occurred independently in different mine populations, genetic differentiation was only partially shared between these populations. The study suggests that predicting evolutionary outcomes based on genomic data can be challenging due to idiosyncrasies at the genetic level.
MOLECULAR BIOLOGY AND EVOLUTION
(2021)
Article
Ecology
Marcos Vinicius Dantas-Queiroz, Tami da Costa Cacossi, Barbara Simoes Santos Leal, Cleber Juliano Neves Chaves, Thais N. C. Vasconcelos, Leonardo de Melo Versieux, Clarisse Palma-Silva
Summary: Studying the Vriesea oligantha species complex endemic to the Espinhaco Range, researchers used genetic data and climate variables to demonstrate the impact of ancient climatic fluctuations on species differentiation and evolutionary patterns.
JOURNAL OF BIOGEOGRAPHY
(2021)
Editorial Material
Plant Sciences
Clarisse Palma-Silva, Andreia Carina Turchetto-Zolet, Michael F. Fay, Thais Vasconcelos
BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
(2022)
Article
Ecology
Marilia Manuppella Tavares, Milene Ferro, Barbara Simoes Santos Leal, Clarisse Palma-Silva
Summary: This study investigated the genomic differentiation between hybridizing Neotropical species Pitcairnia staminea and P. albiflos, identifying candidate genomic regions for positive selection related to reproductive isolation. Through simulations, it was found that there was a gradual reduction in gene flow between the two species over time.
ECOLOGY AND EVOLUTION
(2022)
Article
Plant Sciences
Fernanda Maria de Russo Godoy, Luciana Vicente-Silva, Marcos Vinicius Dantas-Queiroz, Clarisse Palma-Silva, Gecele Matos Paggi
Summary: This study assessed the genetic diversity and population structure of nine populations of Aechmea distichantha from Brazil using a plastidial DNA region and ten nuclear microsatellite markers. The results showed that A. distichantha has low-to-moderate plastidial genetic diversity and moderate-to-high nuclear genetic diversity. High genetic differentiation was found among A. distichantha populations in different geographical locations, which may be a result of its mixed reproductive system and restricted gene flow. The findings suggest that in situ conservation is the most appropriate protection measure for these plant populations.
PLANT SYSTEMATICS AND EVOLUTION
(2023)
Editorial Material
Plant Sciences
Michael F. Fay
BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
(2023)
Article
Evolutionary Biology
Roberta Gargiulo, Robin S. Waples, Adri K. Grow, Richard P. Shefferson, Juan Viruel, Michael F. Fay, Tiiu Kull
Summary: Estimating effective population size (N-e) is important, but it remains challenging for organisms with complex life-history traits. In this study, we examined how clonal versus sexual reproduction affected N-e in two populations of the orchid Cypripedium calceolus. The results showed that N-e in partially clonal plants cannot be predicted solely based on the number of genets generated by sexual reproduction.
EVOLUTIONARY APPLICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Marcos Vinicius Dantas-Queiroz, Fernanda Hurbath, Fernanda Maria de Russo Godoy, Flavia Mol Lanna, Leonardo M. M. Versieux, Clarisse Palma-Silva
Summary: Mountains are known for their rich and diverse biodiversity, with the origin of this abundance often attributed to their geological history. However, even ancient mountain systems with geological stability can exhibit high levels of species and endemism. Climatic fluctuations over the past few million years are believed to have played a significant role in the diversification of mountainous biota. This study aims to evaluate the impact of climatic oscillations on the biodiversity of the Brazilian Quartzitic Mountains (BQM) in Eastern South America, using various analytical methods.
Article
Biochemistry & Molecular Biology
Huiying Shang, David L. Field, Ovidiu Paun, Martha Rendon-Anaya, Jaqueline Hess, Claus Vogl, Jianquan Liu, Par K. Ingvarsson, Christian Lexer, Thibault Leroy
Summary: Genomic landscapes of nucleotide diversity and differentiation are investigated to understand speciation processes. Resequencing 201 whole genomes from 8 closely related Populus species reveals extensive introgression between some species pairs. Conserved patterns of genomic divergence across species pairs are observed, with signatures of linked selection, gene flow, and standing genetic variation identified.
Article
Plant Sciences
Jacopo Calevo, Maarten J. M. Christenhusz, Michael F. Fay
Summary: Orchis patens was previously believed to have three disjunct populations in northern Italy, Algeria/Tunisia, and the Canary Islands. While the population in the Canary Islands is commonly referred to as O. canariensis, there has been doubt about the name for the Italian taxon because the type specimen of O. patens is from the Algerian populations. In this study, we reviewed the taxonomic literature and provided a key based on recently published molecular data for these three taxa in the Orchis section Robustocalcare. We concluded that Orchis patens subsp. brevicornis is the correct name for the Italian taxon.
Article
Chemistry, Multidisciplinary
Taynara S. Matos, Mariana S. Marques, Cleber J. N. Chaves, Flavia S. Zandonadi, Clarisse Palma-Silva, Alessandra Sussulini
Summary: The study aimed to assess the lipid profile changes on Pitcairnia flammea leaves using different solvent proportions and ultrasonic ice bath extraction times, followed by a analysis of enriched lipid classes using chemometric techniques. Ultra-high performance liquid chromatography coupled with electrospray ionization mass spectrometry (UHPLC-ESI-MS) was used to gather raw data, while MS-DIAL and MetaboAnalyst platforms were utilized for data preprocessing and statistical analysis. The statistical analysis of UHPLC-ESI-MS data in both ionization modes revealed a trend distribution based on extraction time. The findings also showed that the solvent proportion had a greater impact on group separation in data samples extracted for 30 min compared to 10 and 20 min. Additionally, diacylglycerol or/and lysophosphatidylcholine were found to be favored lipid subclasses depending on the extraction time in mass spectrometry analyses using positive electrospray ionization mode.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)
Article
Biodiversity Conservation
Carly Cowell, Alan Paton, James S. Borrell, China Williams, Paul Wilkin, Alexandre Antonelli, William J. Baker, Richard Buggs, Michael F. Fay, Roberta Gargiulo, Olwen M. Grace, Benedikt G. Kuhnhauser, Yannick Woudstra, Paul J. Kersey
Summary: Digitized molecular data, referred to as Digital Sequence Information (DSI), are crucial for scientific research and genetic resource utilization, but access and benefit-sharing concerns remain unresolved due to lack of clear definitions and governance.
PLANTS PEOPLE PLANET
(2022)