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...

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Bibliographic Details
Main Authors: Liesner, Daniel, Pearson, Gareth, Bartsch, Inka, Rana, Shivani, Harms, Lars, Heinrich, Sandra, Bischof, Kai, Glöckner, Gernot, Valentin, Klaus
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
Arctic
Biological sample
BIOS
gametogenesis
growth
Helgoland_L_digitata_culture
Laboratory experiment
North Sea
quantum yield
Spitsbergen_L_digitata_culture
Survival
Temperate
Helgoland
Spitsbergen
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.940559
https://doi.org/10.1594/PANGAEA.940559
Description
Summary: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.

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