ArticleScientific reports2020
Sexual reproduction and genetic polymorphism within the cosmopolitan marine diatom Pseudo-nitzschia pungens.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 16 citations in OpenAlex.
- Genome-Wide Adaptation to a Complex Environmental Gradient in a Keystone Phytoplankton Species.Molecular ecology · 2025Article
- Extensive Variation in Thermal Responses and Toxin Content Among 40 Strains of the Cold-Water DiatomToxins · 2025Article
- Sexual reproduction during diatom bloom.ISME communications · 2025Article
- Population bottlenecks and sexual recombination shape diatom microevolution.Ecology and evolution · 2024Article
- Trade-off between sex and growth in diatoms: Molecular mechanisms and demographic implications.Science advances · 2022Article
- Update of the Planktonic Diatom GenusToxins · 2021Article
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Authors and funding
9 authors at 6 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Different clades belonging to the cosmopolitan marine diatom Pseudo-nitzschia pungens appear to be present in different oceanic environments, however, a 'hybrid zone', where populations of different clades interbreed, has also been reported. Many studies have investigated the sexual reproduction of P. pungens, focused on morphology and life cycle, rather than the role of sexual reproduction in mixing the genomes of their parents. We carried out crossing experiments to determine the sexual compatibility/incompatibility between different clades of P. pungens, and examined the genetic polymorphism in the ITS2 region. Sexual reproduction did not occur only between clades II and III under any of experimental temperature conditions. Four offspring strains were established between clade I and III successfully. Strains established from offspring were found interbreed with other offspring strains as well as viable with their parental strains. We confirmed the hybrid sequence patterns between clades I and III and found novel sequence types including polymorphic single nucleotide polymorphisms (SNPs) in the offspring strains. Our results implicate that gene exchange and mixing between different clades are still possible, and that sexual reproduction is a significant ecological strategy to maintain the genetic diversity within this diatom species.
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