ArticleMolecular ecology resources2022
Transcriptome-wide SNPs for Botrychium lunaria ferns enable fine-grained analysis of ploidy and population structure.
Article in Molecular ecology resources, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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3 citing papers in PubMed.
- Extensive transcriptome data providing great efficacy in genetic research and adaptive gene discovery: a case study ofFrontiers in plant science · 2024Article
- Evolutionary history of an Alpine Archaeognath (Ecology and evolution · 2023Article
- Transcriptome-wide SNPs for Botrychium lunaria ferns enable fine-grained analysis of ploidy and population structure.Molecular ecology resources · 2022Article
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6 authors.
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Abstract
Ferns are the second most diverse group of land plants after angiosperms. Extant species occupy a wide range of habitats and contribute significantly to ecosystem functioning. Despite the importance of ferns, most taxa are poorly covered by genomic resources and within-species studies based on high-resolution markers are entirely lacking. The genus Botrychium belongs to the family Ophioglossaceae, which includes species with very large genomes and chromosome numbers (e.g., Ophioglossum reticulatum 2n = 1520). The genus has a cosmopolitan distribution with 35 species, half of which are polyploids. Here, we establish a transcriptome for Botrychium lunaria (L.) Sw., a diploid species with an extremely large genome of about ~19.0-23.7 Gb. We assembled 25,677 high-quality transcripts with an average length of 1,333 bp based on deep RNA-sequencing of a single individual. We sequenced 11 additional transcriptomes of individuals from two populations in Switzerland, including the population of the reference individual. Based on read mapping to reference transcript sequences, we identified 374,463 single nucleotide polymorphisms (SNPs) segregating among individuals for an average density of 14 SNPs per kilobase. We found that all 12 transcriptomes were most likely from diploid individuals. The transcriptome-wide markers provided unprecedented resolution of the population genetic structure, revealing substantial variation in heterozygosity among individuals. We also constructed a phylogenomic tree of 92 taxa representing all fern orders to ascertain the placement of the genus Botrychium. High-quality transcriptomic resources and SNP sets constitute powerful population genomic resources to investigate the ecology, and evolution of fern populations.
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