Опубликована: Сен. 23, 2021
Kelp Forests of the Canadian Arctic biomass and seaweed diversity, suggesting kelp could increase, species composition forests shift, as sea ice diminishes in some areas Eastern Arctic.Our findings demonstrate high potential productivity this extensive coastal zone highlight need to better understand ecology system services it provides.
Язык: Английский
Опубликована: Май 14, 2024
Phylogenomics has enriched our understanding that the Tree of Life can have network-like or reticulate structures among some taxa and genes. Non-vertical modes evolution—such as hybridization/introgression horizontal gene transfer—deviate from a strictly bifurcating tree model, causing non-treelike patterns. Here, we present brief overview phylogenomic workflow for inferring organismal histories compare methods detecting evolution. We discuss how timing coalescent events help disentangle introgression incomplete lineage sorting transfer determine relative speciation events. In doing so, identify pitfalls certain to extend their utility across Life. Workflows, methods, future directions discussed herein underscore need embrace evolutionary patterns rates events, providing clearer life’s history.
Язык: Английский
Процитировано
1
Molecular Phylogenetics and Evolution, Год журнала: 2024, Номер 201, С. 108197 - 108197
Опубликована: Сен. 11, 2024
Язык: Английский
Процитировано
1
Elsevier eBooks, Год журнала: 2023, Номер unknown, С. 19 - 34
Опубликована: Сен. 15, 2023
Язык: Английский
Процитировано
2
Journal of Applied Phycology, Год журнала: 2023, Номер 36(1), С. 313 - 320
Опубликована: Ноя. 22, 2023
Язык: Английский
Процитировано
2
Journal of Phycology, Год журнала: 2022, Номер 59(1), С. 4 - 8
Опубликована: Дек. 7, 2022
Much of the detailed knowledge we have today in biology was obtained through study a limited number model organisms, with often one or small models serving as key reference species for entire phylogenetic lineages (Davis 2004).For example Escherichia coli, Saccharomyces cerevisiae, Drosophila melanogaster and Arabidopsis thaliana played extremely important roles investigating diverse biological features eubacteria, fungi, animals land plants, respectively.As members stramenopiles, brown algae (Phaeophyceae) are very distantly related to most commonly used eukaryotic whether they be from animal, fungi plant lineages, these classical therefore relevance many unusual that specific algal lineage.Based on this observation, Peters et al. ( 2004) proposed adoption Ectocarpus central organism research.This choice based primarily size its nuclear genome, itself capacity complete sexual life cycle relatively short time (about three months) laboratory.Ectocarpus also chosen because considerable body earlier work, principally Dieter Müller's laboratory Konstanz, had demonstrated potential already led several discoveries including structure, pheromone an inserted viral genome (Müller 1964
Язык: Английский
Процитировано
3
bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown
Опубликована: Окт. 13, 2024
Summary Kelp forests are declining in many parts of the northeast Pacific 1–4 . In small populations, genetic drift can reduce adaptive variation and increase fixation recessive deleterious alleles 5–7 , but natural selection may purge harmful variants 8–10 To understand evolutionary dynamics inform restoration strategies, we investigated structure outcomes purging by sequencing genomes 429 bull kelp ( Nereocystis luetkeana ) 211 giant Macrocystis pyrifera sensu lato 11 ; cf. 12 from coastlines British Columbia Washington. We identified 6-7 geographically genetically distinct clusters each species. Low effective population size was associated with low diversity high inbreeding coefficients (including increased selfing rates), extreme these health indices among populations more moderate kelp. found no evidence that is putative either Instead, has fixed such kelp, leading us to predict (1) reduced within-population depression which be an observed shift toward rate, (2) hybrid vigour crosses between populations. Our genomic findings imply several strategies for optimal sourcing crossing aquaculture, require experimental validation. Overall, our work reveals strong suggests conservation should consider multiple risks faced whose dominated drift.
Язык: Английский
Процитировано
0
Botanica Marina, Год журнала: 2022, Номер 65(5), С. 357 - 370
Опубликована: Сен. 5, 2022
Abstract Most of the archipelagos Russian Arctic are still extremely poorly studied. New data have been obtained using SCUBA diving and on-shore sampling during “Open Ocean: Archipelagos – 2019. Severnaya Zemlya” expedition, which provided a significant update to scarce information on seaweeds Zemlya Archipelago. The list macroalgae archipelago includes 48 species date, belonging Chlorophyta (17 species), Rhodophyta (18), Phaeophyceae (13). Twenty-eight recorded for first time in study area; three new entire Arctic. taxonomic status some observed is discussed. For time, wide distribution kelps described sub-tidal zone high-Arctic areas Siberian shelf, severely affected by ice disturbance glacial processes. highest population densities kelp communities near Krasnoflotskie Islands (the Kara Sea) Akhmatov Mikoyan bays Laptev Sea). Further studies flora vegetation both Archipelago shelf other required.
Язык: Английский
Процитировано
2
Опубликована: Сен. 23, 2021
Kelp Forests of the Canadian Arctic biomass and seaweed diversity, suggesting kelp could increase, species composition forests shift, as sea ice diminishes in some areas Eastern Arctic.Our findings demonstrate high potential productivity this extensive coastal zone highlight need to better understand ecology system services it provides.
Язык: Английский
Процитировано
2