Light alters the responses of two marine diatoms to increased warming. (February 2020)
- Record Type:
- Journal Article
- Title:
- Light alters the responses of two marine diatoms to increased warming. (February 2020)
- Main Title:
- Light alters the responses of two marine diatoms to increased warming
- Authors:
- Zeng, Xiaopeng
Jin, Peng
Jiang, Yingying
Yang, Haimei
Zhong, Jiahui
Liang, Zhe
Guo, Yingyan
Li, Peiyuan
Huang, Quanting
Pan, Jinmei
Lu, Hua
Wei, Yanyun
Zou, Dinghui
Xia, Jianrong - Abstract:
- Abstract: In this study, we examined the effects of increased temperature (15, 20 and 25 °C) and different light levels (50, 200 μmol photons m −2 s −1 ) on two widely distributed diatoms, namely Phaeodactylum tricornutum and Thalassiosira weissflogii . Results showed that increasing light level counteracted the negative effects of high temperature on photosynthesis in both species, suggesting an antagonistic interaction between light and temperature. Contrary to the above results, light limitation diminished the temperature-sensitivity of carbonic anhydrase activity in two diatoms. We also observed species-specific responses of biomass, where increased temperature significantly decreased the biomass of P. tricornutum at both low and high light levels but showed no effects on T. weissflogii . Our study demonstrated that light can alter the physiological responses of diatoms to temperature but also revealed interspecific variations. We predict that in the future ocean with shallower upper mixed layer, T. weissflogii may be more competitive than P. tricornutum. Graphical abstract: Image 1 Highlights: Increasing light levels can counteract the negative effect of increasing temperature on photosynthesis in two diaoms . Light limitation diminishes the temperature-sensitivity of carbonic anhydrase activity in two diatoms. The biomass of P. tricornutum is more sensitive to temperature increase than T. weissflogii. Light can alter the physiological responses of diatoms toAbstract: In this study, we examined the effects of increased temperature (15, 20 and 25 °C) and different light levels (50, 200 μmol photons m −2 s −1 ) on two widely distributed diatoms, namely Phaeodactylum tricornutum and Thalassiosira weissflogii . Results showed that increasing light level counteracted the negative effects of high temperature on photosynthesis in both species, suggesting an antagonistic interaction between light and temperature. Contrary to the above results, light limitation diminished the temperature-sensitivity of carbonic anhydrase activity in two diatoms. We also observed species-specific responses of biomass, where increased temperature significantly decreased the biomass of P. tricornutum at both low and high light levels but showed no effects on T. weissflogii . Our study demonstrated that light can alter the physiological responses of diatoms to temperature but also revealed interspecific variations. We predict that in the future ocean with shallower upper mixed layer, T. weissflogii may be more competitive than P. tricornutum. Graphical abstract: Image 1 Highlights: Increasing light levels can counteract the negative effect of increasing temperature on photosynthesis in two diaoms . Light limitation diminishes the temperature-sensitivity of carbonic anhydrase activity in two diatoms. The biomass of P. tricornutum is more sensitive to temperature increase than T. weissflogii. Light can alter the physiological responses of diatoms to temperature, but showed interspecific variations. In the future ocean with shallower upper mixed layer, T. weissflogii may be more competitive than P. tricornutum. … (more)
- Is Part Of:
- Marine environmental research. Volume 154(2020)
- Journal:
- Marine environmental research
- Issue:
- Volume 154(2020)
- Issue Display:
- Volume 154, Issue 2020 (2020)
- Year:
- 2020
- Volume:
- 154
- Issue:
- 2020
- Issue Sort Value:
- 2020-0154-2020-0000
- Page Start:
- Page End:
- Publication Date:
- 2020-02
- Subjects:
- Ocean warming -- Diatoms -- Carbonic anhydrase -- Rubisco -- Global change -- Enzymes -- Phaeodactylum tricornutum -- Thalassiosira weissflogii
Marine pollution -- Environmental aspects -- Periodicals
Marine ecology -- Periodicals
Mer -- Pollution -- Aspect de l'environnement -- Périodiques
Écologie marine -- Périodiques
Electronic journals
577.705 - Journal URLs:
- http://www.sciencedirect.com/science/journal/01411136 ↗
http://www.elsevier.com/journals ↗ - DOI:
- 10.1016/j.marenvres.2019.104871 ↗
- Languages:
- English
- ISSNs:
- 0141-1136
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 5375.270000
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