Article
Plant Sciences
Fernanda P. P. Cid-Alda, Alejandro E. E. Montecinos, Marie Laure Guillemin
Summary: This study aimed to determine the temporal and spatial variations in the genetic structure of four marine Bangiales species. Results showed a strong genetic spatial structure at the regional scale and a potential gene flow barrier related to the Valdivia River discharge. The genetic structure of all four species was stable throughout the year.
JOURNAL OF PHYCOLOGY
(2023)
Article
Ecology
Gecele Matos Paggi, Clarisse Palma-Silva, Camila Martini Zanella, Marcia Goetze, Miriam Valli Buettow, Christian Lexer, Fernanda Bered
Summary: The study aimed to assess the patterns and determinants of spatiotemporal variation in fertility, mating systems, and gene flow in the epiphytic bromeliad Vriesea gigantea. The results showed that the observed variation in fertility, mating systems, and gene flow in this species are attributable to selfing adaptation and edge effects.
FRONTIERS IN FORESTS AND GLOBAL CHANGE
(2022)
Article
Evolutionary Biology
Jake M. Mulvaney, Conrad A. Matthee, Michael Cherry
Summary: Species dependent on fragmented habitats in South Africa are facing declines in population size and disruption of gene flow due to landscape transformation. The study found that landscape features play a crucial role in maintaining gene flow for forest-dependent birds, with some species more impacted than others by anthropogenic landscape changes.
EVOLUTIONARY APPLICATIONS
(2021)
Article
Plant Sciences
Margaux Jullien, Joelle Ronfort, Laurene Gay
Summary: Despite predominantly selfing, the natural population of M. truncatula displays variation in residual outcrossing rate, likely under a complex determinism combining environmental and genetic factors. The study found a small increase in outcrossing rate at the end of the flowering season and detected significant between genotypes variation in selfing rate, indicating a heritability of 9% for the rate of residual outcrossing.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Genis Garcia-Erill, Michael Munkholm Kjaer, Anders Albrechtsen, Hans Redlef Siegismund, Rasmus Heller
Summary: Grant's gazelles have been proposed to form a species complex with three divergent mtDNA lineages. Genomic data from 106 individuals revealed population subdivision, hybridization events, and signs of gene flow among the lineages. The species divergence was dated to 134,000 years ago, with evidence of selection shaping the outcomes of hybridization in certain populations.
Article
Biochemistry & Molecular Biology
Catarina N. S. Silva, Nicholas P. Murphy, James J. Bell, Bridget S. Green, Guy Duhamel, Andrew C. Cockcroft, Cristian E. Hernandez, Jan M. Strugnell
Summary: Investigating historical gene flow in the Jasus genus reveals the important effects of habitat and demographic processes on genetic differentiation and diversification patterns. Eastern Pacific species show strict isolation following ancient migration, while species from different habitat types share common ancestry but are geographically distant.
Article
Biochemistry & Molecular Biology
Oriana B. Bhasin, Saskia Sergeant, Olivier J. Hardy
Summary: This study developed 24 polymorphic markers to study the genetic structure and gene flow patterns of Cylicodiscus gabunensis. These markers can assist in the development of sustainable forest management practices.
MOLECULAR BIOLOGY REPORTS
(2022)
Article
Multidisciplinary Sciences
Chathurani Ranathunge, Sreepriya Pramod, Sebastien Renaut, Gregory L. Wheeler, Andy D. Perkins, Loren H. Rieseberg, Mark E. Welch
Summary: The study found that microsatellites in non-coding regions of genes are more likely to contribute to gene expression differences among species, and are significantly enriched in terms related to transcriptional regulation and transcription factor activity.
Article
Biotechnology & Applied Microbiology
Xian Zhang, Lijun Xiao, Jiahui Liu, Qibai Tian, Jiaqi Xie
Summary: This study provides a global genome-wide analysis of the genetic diversity and evolution of the cyanobacterium Microcystis aeruginosa. The results demonstrate that gene flow, horizontal gene transfer, and phage-mediated transduction play important roles in shaping the genetic diversity and evolution of Microcystis. The study also suggests that gene gain and loss drive the divergent differentiation of Microcystis genomes, with a trade-off in gene content.
Article
Biochemistry & Molecular Biology
Daniel J. MacGuigan, Oliver D. Orr, Thomas J. Near
Summary: The history of riverine fish diversification is largely driven by geographic isolation, where physical barriers and genetic drift lead to speciation. The Johnny Darter (Etheostoma nigrum) species complex, which includes E. olmstedi, E. perlongum, and E. susanae, exhibits gene flow and conflicting species diversity inferences. By using genomic data and population genetic approaches, this study identifies and validates several evolutionary lineages within the complex, emphasizing the need for further research to describe its diversity. The phylogeographic structure within the complex is influenced by major geologic events and river basin rearrangements, making it a hotspot of freshwater biodiversity in eastern North America.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2023)
Article
Biochemistry & Molecular Biology
Michael San Jose, Camiel Doorenweerd, Scott Geib, Norman Barr, Julian R. Dupuis, Luc Leblanc, Angela Kauwe, Kimberley Y. Morris, Daniel Rubinoff
Summary: With the increasing availability of genomic data, the definition of species boundaries and relationships is becoming more ambiguous, possibly due to the neglect of gene flow. This study compared the results of phylogenetic and coalescent approaches, and found incongruence between species relationships. The importance of testing for gene flow, even when using high statistical support methods, was highlighted.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2023)
Article
Ecology
Sean Harrington, Frank T. Burbrink
Summary: This study investigates how climate, geography, and history influence the formation of lineages in the common kingsnake species complex within the complex and geologically diverse landscape of North America. The results show that changing climates and a large, complex landscape have led to a mosaic of discrete and spatially continuous genetic structure in the common kingsnake population. Multiple rounds of isolation and secondary contact, driven by climate fluctuations over the past 4.4 million years, have played a significant role in the evolution of discrete lineages with high levels of gene flow. Precipitation gradients also contribute to maintaining lineage identity in the face of gene flow.
JOURNAL OF BIOGEOGRAPHY
(2023)
Article
Ecology
Joe C. Gunn, Leah K. Berkman, Jeff Koppelman, Andrew T. Taylor, Shannon K. Brewer, James M. Long, Lori S. Eggert
Summary: This study revealed the genetic differences and intra-specific diversity patterns between the Neosho Bass and Smallmouth Bass through population genomic analysis. The results suggest that the Neosho Bass may be locally adapted and has been influenced by both natural and anthropogenic factors.
ECOLOGY AND EVOLUTION
(2022)
Article
Biochemistry & Molecular Biology
Xuefeng Fang, Dong Dong, Mei Yang, Xinzheng Li
Summary: This study confirmed a new species within the Petrolisthes lamarckii-P. haswelli complex through morphological and molecular analysis, and constructed an evolutionary tree of this complex. The divergence of this complex was traced back to the Miocene epoch, and genetic diversity increased during the Mid-Pleistocene transition period. Also, the demographic history and gene flow of Petrolisthes haswelli in Chinese coastal populations were influenced by ocean currents.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Genetics & Heredity
Daven C. Presgraves, Colin D. Meiklejohn
Summary: The three fruitfly species of the Drosophila simulans clade have been important models in speciation genetics for over 40 years. They exhibit reproductive isolation due to various factors and hybrid male sterility has been a key focus of genetic scrutiny. The genetic conflicts, polygenic nature, and role of gene flow in speciation have challenged classical views of speciation.
FRONTIERS IN GENETICS
(2021)
Article
Evolutionary Biology
Tom L. Jenkins, Marie-Laure Guillemin, Cornelia Simon-Nutbrown, Heidi L. Burdett, Jamie R. Stevens, Viviana Pena
Summary: Genomic analysis revealed that maerl beds of P. calcareum in the north-east Atlantic are geographically structured due to limited dispersal potential and connectivity. Unique genetic diversity of P. calcareum in the Fal Estuary, south-west England, was shaped by geographical isolation and lack of gene flow with other populations, separate from closely related species. Preserving the accumulated genetic diversity of P. calcareum is crucial for enhancing resilience to climate and environmental changes, requiring conservation management at a site-by-site level in western Europe.
EVOLUTIONARY APPLICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Lauric Reynes, Thierry Thibaut, Stephane Mauger, Aurelie Blanfune, Florian Holon, Corinne Cruaud, Arnaud Couloux, Myriam Valero, Didier Aurelle
Summary: The study identified genomic signatures of partial clonality in the deep water kelp species Laminaria rodriguezii and compared them with a closely related species Laminaria digitata. The findings showed distinct genetic distributions and different impacts of clonality and genetic drift on population diversity. These results provide insights into the genetic study of asexuality in natural populations and highlight potential applications of RAD-sequencing in investigating partial clonality in various non-model species.
Article
Ecology
Svenja Heesch, Martha Serrano-Serrano, Josue Barrera-Redondo, Remy Luthringer, Akira F. Peters, Christophe Destombe, J. Mark Cock, Myriam Valero, Denis Roze, Nicolas Salamin, Susana M. Coelho
Summary: A study on the evolution of life cycles in brown algae revealed that diploid growth evolves when sexual reproduction is preferred over asexual reproduction. The research also found that haploid sex determination is ancestral to diploid sex determination, and isogamous species in brown algae evolved from anisogamous ancestors, contrary to the commonly reported pattern of evolution from isogamy to anisogamy.
JOURNAL OF EVOLUTIONARY BIOLOGY
(2021)
Article
Environmental Sciences
Lauric Reynes, Didier Aurelle, Cristele Chevalier, Christel Pinazo, Myriam Valero, Stephane Mauger, Stephane Sartoretto, Aurelie Blanfune, Sandrine Ruitton, Charles-Francois Boudouresque, Marc Verlaque, Thierry Thibaut
Summary: Oceanic connectivity was found to be the primary predictor of genetic structure, while genetic differentiation in selective gene markers was linked to population depth, as indicated by minimum seawater temperature. Further research is needed to fully understand the role of depth in driving adaptive genetic differentiation in E. zosteroides.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Stephane Mauger, Louise Fouqueau, Komlan Avia, Lauric Reynes, Ester A. Serrao, Joao Neiva, Myriam Valero
Summary: Marine ecosystems formed by kelp forests are at risk from global change and local disturbances, making it crucial to identify genetic diversity reservoirs and develop tools such as microsatellite markers. Research found a decrease in cross-amplification of markers between closely related species with increasing genetic distance, and proposed a rapid PCR identification method based on species-specific COI mitochondrial primers to distinguish between four kelp species.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Review
Fisheries
Richard Dumilag, Bea A. Crisostomo, Zae-Zae A. Aguinaldo, Lourie Ann R. Hinaloc, Lawrence M. Liao, Hilly Ann Roa-Quiaoit, Floredel Dangan-Galon, Giuseppe C. Zuccarello, Marie-Laure Guillemin, Juliet Brodie, Elizabeth J. Cottier-Cook, Michael Y. Roleda
Summary: The main farmed seaweed species in the Philippines are collectively known as eucheumatoids, including Eucheuma denticulatum, Kappaphycus alvarezii, K. malesianus, and K. striatus. The Filipino farmers maintain a high diversity of cultivars, which has contributed to the success of seaweed farming in the country for over five decades. This study documented a total of 66 cultivars recognized across 58 provinces in the Philippines, with most identified as K. alvarezii or K. striatus. The traditional knowledge possessed by Filipino farmers regarding the diversity of eucheumatoids is valuable for future crop selection and breeding.
REVIEWS IN FISHERIES SCIENCE & AQUACULTURE
(2023)
Article
Plant Sciences
Fernanda P. Cid Alda, Nelson Valdivia, Marie-Laure Guillemin
Summary: This study demonstrates the presence of cryptic red algae species in the rocky intertidal zone of Chile, with distinct spatial and temporal distribution patterns. These species have similar morphologies but differ genetically. The study also suggests that intertidal elevation is the main factor affecting species composition, while seasonal variation also has a slight impact.
Article
Multidisciplinary Sciences
E. Lavaut, M-L Guillemin, S. Colin, A. Faure, J. Coudret, C. Destombe, M. Valero
Summary: Recent studies have contradicted the long-held belief that animal-mediated pollination is absent in the sea, particularly in seagrasses, sparking interest in investigating other marine phyla. This study discovers that biotic interactions can significantly increase the fertilization success of red algae through animal transport of spermatia, suggesting that animal-mediated fertilization may have evolved independently in terrestrial and marine environments and could have emerged in the sea before plants moved ashore.
Article
Environmental Sciences
Ronan Becheler, Daniela Haverbeck, Corentin Clerc, Gabriel Montecinos, Myriam Valero, Andres Mansilla, Sylvain Faugeron
Summary: This study aimed to test the local adaptation in giant kelp and found that there are variations in temperature tolerance among different regions and populations. However, high latitude populations are not always more heat resilient than low latitude populations. Additionally, the gametophytes of the giant kelp have a large range of temperature tolerance, indicating their resistance.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Oscar R. Huanel, Suany Quesada-Calderon, Cristian Rios Molina, Sarai Morales-Gonzalez, Pablo Saenz-Agudelo, Wendy A. Nelson, Natalia Arakaki, Stephane Mauger, Sylvain Faugeron, Marie-Laure Guillemin
Summary: This study used SNP to assess the genetic structure of Gracilaria chilensis in Chile and found that the low genetic diversity may be associated with over-exploitation and colonization history. The Quaternary glacial cycles had important effects on the species in New Zealand. A recent genetic bottleneck was observed in Chile, presenting challenges for genetic resource management in this incipiently domesticated species.
Article
Ecology
Francisco Sepulveda-Espinoza, Ariana Bertin-Benavides, Rodrigo Hasbun, Oscar Toro-Nunez, Antonio Varas-Myrik, Diego Alarcon, Marie-Laure Guillemin
Summary: The study investigates the genetic diversity and connectivity of Embothrium coccineum in the South American temperate forests. By using over 2000 SNPs, the researchers identified two genetic groups that diverged around 2.8 million years ago. The level of genetic structure was higher among populations within the Northern genetic group than the Central-Southern group.
ECOLOGY AND EVOLUTION
(2022)
Article
Biology
E. Lavaut, M. Valero, S. Mauger, M. L. Guillemin, C. Destombe, M. Dufay
Summary: This study shows that sexual selection occurs in the red seaweed Gracilaria gracilis, with males exhibiting greater variance in mating success and a stronger relationship between reproductive success and mating success compared to females. This provides evidence for Bateman's principles in a seaweed species.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Evolutionary Biology
Stacy A. Krueger-Hadfield, Marie-Laure Guillemin, Christophe Destombe, Myriam Valero, Solenn Stoeckel
Summary: Partially clonality is a common reproductive mode found in different eukaryotic lineages, but often ignored in population genetic theory. Haplodiplontic organisms have unique life cycles, and the population genetic consequences of partial clonality in these organisms impact the distribution of genetic indices. Studies have shown similar patterns between empirical data and theoretical expectations, highlighting the importance of considering partial clonality in population genetics research for haplodiplontic taxa.
JOURNAL OF HEREDITY
(2021)