Publikation: Multiannual patterns of genetic structure and mating type ratios highlight the complex bloom dynamics of a marine planktonic diatom
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Understanding the genetic structure of populations and the processes responsible for its spatial and temporal dynamics is vital for assessing species’ adaptability and survival in changing environments. We investigate the genetic fingerprinting of blooming populations of the marine diatom Pseudo-nitzschia multistriata in the Gulf of Naples (Mediterranean Sea) from 2008 to 2020. Strains were genotyped using microsatellite fingerprinting and natural samples were also analysed with Microsatellite Pool-seq Barcoding based on Illumina sequencing of microsatellite loci. Both approaches revealed a clonal expansion event in 2013 and a more stable genetic structure during 2017–2020 compared to previous years. The identification of a mating type (MT) determination gene allowed to assign MT to strains isolated over the years. MTs were generally at equilibrium with two notable exceptions, including the clonal bloom of 2013. The populations exhibited linkage equilibrium in most blooms, indicating that sexual reproduction leads to genetic homogenization. Our findings show that P. multistriata blooms exhibit a dynamic genetic and demographic composition over time, most probably determined by deeper-layer cell inocula. Occasional clonal expansions and MT imbalances can potentially affect the persistence and ecological success of planktonic diatoms.
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RUGGIERO, Maria Valeria, Marina BUFFOLI, Klara WOLF-ESCALLE, Domenico D’ALELIO, Viviana DI TUCCIO, Ernestina LOMBARDI, Francesco MANFELLOTTO, Laura VITALE, Francesca MARGIOTTA, Diana SARNO, Uwe JOHN, Maria Immacolata FERRANTE, Marina MONTRESOR, 2024. Multiannual patterns of genetic structure and mating type ratios highlight the complex bloom dynamics of a marine planktonic diatom. In: Scientific Reports. Springer. 2024, 14(1), 6028. eISSN 2045-2322. Verfügbar unter: doi: 10.1038/s41598-024-56292-yBibTex
@article{Ruggiero2024-03-12Multi-72160, title={Multiannual patterns of genetic structure and mating type ratios highlight the complex bloom dynamics of a marine planktonic diatom}, year={2024}, doi={10.1038/s41598-024-56292-y}, number={1}, volume={14}, journal={Scientific Reports}, author={Ruggiero, Maria Valeria and Buffoli, Marina and Wolf-Escalle, Klara and D’Alelio, Domenico and Di Tuccio, Viviana and Lombardi, Ernestina and Manfellotto, Francesco and Vitale, Laura and Margiotta, Francesca and Sarno, Diana and John, Uwe and Ferrante, Maria Immacolata and Montresor, Marina}, note={Article Number: 6028} }
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