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

Description: 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.

Global identifier:

Doi(
    "10.1594/PANGAEA.940559",
)

Dataset

Origins: /Wissenschaft/PANGAEA

Tags: Resilienz ? Arktis ? Hitzebelastung ? Laborversuch ? Nordsee ? Survival ? Temperate ? gametogenesis ? growth ? quantum yield ?

Bounding boxes: 7.891972° .. 12.025861° x 54.17825° .. 78.991583°

License: cc-by/4.0

Language: Englisch/English

Organisations

• Deutsche Forschungsgemeinschaft (Geldgeber*in)
• PANGAEA (Herausgeber*in)

Persons

• Daniel Liesner (Beitragende*r) [1] [ORCID]
• Inka Bartsch (Beitragende*r) [1] [ORCID]
• Kai Bischof (Beitragende*r) [1] [ORCID]
• Klaus Valentin (Beitragende*r) [1] [ORCID]
• Lars Harms (Beitragende*r) [1] [ORCID]

Issued: 2022-02-01

Modified: 2024-04-20

Time ranges: 2015-06-10 - 2015-09-11

Resources

• https://doi.pangaea.de/10.1594/PANGAEA.940559?format=zip (ZIP)

Status

Aktiv

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