PANGAEA_996552 Heat stress response of adult Saccharina latissima sporophytes to sporophyte priming Steiner, Niko; Nilsen, Anne M; Gauci, Clément; Jueterbock, Alexander; Bartsch, Inka Heat stress response of adult Saccharina latissima sporophytes to sporophyte priming 2026-10-22 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.996552 Investigator Niko Steiner steiner1@uni-bremen.de Earth Science Event label Type of study Date Day of experiment Treatment Treatment: temperature Replicate Sample ID Area Maximum quantum yield of photosystem II geoscientificInformation heat stress heatwave Kelp Laboratory experiment S_latissima_priming_exp4 thermal priming thermal tolerance Image analysis NIH ImageJ Pulse-Amplitude-Modulated (PAM) fluorometer, WALZ GmbH, Germany, M-Series 2024-07-11 2024-07-26 Complete 53.53327 53.53327 8.58052 8.58052 unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 3816 data points text/tab-separated-values Steiner, Niko; Nilsen, Anne M; Gauci, Clément; Jueterbock, Alexander; Bartsch, Inka (2026): Differential response of gametophyte and sporophyte priming to heat stress of Saccharina latissima sporophytes across different age classes. Marine Ecology Progress Series, 794, 1-24, https://doi.org/10.3354/meps15253

We assessed the heat tolerance of adult Saccharina latissima sporophytes reared in mariculture under heat stress and in response to sporopyhte priming. Primed (0°C, 10°C, 20°C; 3 weeks) gametophytes (Lofoten 2023; 10°C mixed culture; n = 5) were sown on ropes and reared in a mariculture experiment (2 months hatchery, 4 months mariculture). Adult sporophytes were sampled and sporophytes from the 0°C gametophyte priming treatment were recovered at 10°C for 24 days. Meristematic discs were exposed to a 1-day sporophyte priming trigger (T). A control group (C) remained at 10°C. After 3 days recovery at 10°C both groups were subjected to a 7-day heat stress treatment at 20°C, 21.5°C, 23°C, and 25°C, where we measured growth (disc area) and Fv/Fm. The mariculture experiment took place at the hatchery of Polaralge AS (Sandhornøy, Norway; December - February 2024) and the deployment site of Lofoten Blue Harvest (Lilje Engla, Lofoten, Norway; 68°16'02.8"N 15°06'14.8"E; February – June 2024). The laboratory experiment was carried out at the Alfred Wegener Institute in Bremerhaven, Germany. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.996552"!

http://en.wikipedia.org/wiki/ISO_8601 Date https://doi.org/10.3354/meps15253 Differential response of gametophyte and sporophyte priming to heat stress of Saccharina latissima sporophytes across different age classes PANGAEA_996547 DIF 9.4 2026-10-22 2026-10-22