Heat resilience of intraspecific outbred compared to inbred lineages in the kelp Laminaria digitata: gametogenesis, thermal tolerance and growth

doi:doi:10.1594/PANGAEA.940559

Heat resilience of intraspecific outbred compared to inbred lineages in the kelp Laminaria digitata: gametogenesis, thermal tolerance and growth

In a mechanistic investigation of heat stress, heterosis (hybrid vigour), and underlying gene expression patterns, we assessed the thermal performance of inbred (selfings) and outbred (reciprocal crosses) sporophytes of the N-Atlantic kelp Laminaria digitata among clonal isolates from two divergent populations; one from the temperate North Sea (Helgoland) and one from the Arctic (Spitsbergen). First, we investigated the upper thermal tolerance of microscopic sporophytes in a 14-day experiment applying sublethal to lethal 20–23°C. We then subjected 4–7 cm long sporophytes to a control temperature (10°C), moderate (19°C) and sublethal to lethal heat stress (20.5°C) for 18 days to assess the physiological parameters growth and optimum quantum yield.

BibTex:

@dataset{Liesner_Daniel_and_Pearson_Gareth_and_Bartsch_Inka_and_Rana_Shivani_and_Harms_Lars_and_Heinrich_Sandra_and_Bischof_Kai_and_Glöckner_Gernot_and_Valentin_Klaus_2022,
    abstract = {In a mechanistic investigation of heat stress, heterosis (hybrid vigour), and underlying gene expression patterns, we assessed the thermal performance of inbred (selfings) and outbred (reciprocal crosses) sporophytes of the N-Atlantic kelp Laminaria digitata among clonal isolates from two divergent populations; one from the temperate North Sea (Helgoland) and one from the Arctic (Spitsbergen). First, we investigated the upper thermal tolerance of microscopic sporophytes in a 14-day experiment applying sublethal to lethal 20–23°C. We then subjected 4–7 cm long sporophytes to a control temperature (10°C), moderate (19°C) and sublethal to lethal heat stress (20.5°C) for 18 days to assess the physiological parameters growth and optimum quantum yield.},
    author = {Liesner, Daniel and Pearson, Gareth and Bartsch, Inka and Rana, Shivani and Harms, Lars and Heinrich, Sandra and Bischof, Kai and Glöckner, Gernot and Valentin, Klaus},
    doi = {10.1594/PANGAEA.940559},
    institution = {PANGAEA (Ecology)},
    keyword = {'Arctic', 'Laboratory experiment', 'North Sea', 'Survival', 'Temperate', 'gametogenesis', 'growth', 'quantum yield'},
    title = {Heat resilience of intraspecific outbred compared to inbred lineages in the kelp Laminaria digitata: gametogenesis, thermal tolerance and growth},
    url = {https://service.tib.eu/ldmservice/vdataset/png-doi-10-1594-pangaea-940559},
    year = {2022}
}