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The adaptive mechanisms of the marine diatom Thalassiosira weissflogii to long‐term high CO2 and warming.

Authors :
Zhou, Yunyue
Wu, Fenghuang
Wu, Jiao
Overmans, Sebastian
Ye, Mengcheng
Xiao, Mengting
Peng, Baoyi
Xu, Leyao
Huang, Jiali
Lu, Yucong
Wang, Yipeng
Liang, Shiman
Zhang, Hao
Liang, Xiao
Zhong, Zhirong
Liu, Haobin
Ruan, Zuoxi
Xia, Jianrong
Jin, Peng
Source :
Plant Journal. Aug2024, Vol. 119 Issue 4, p2001-2020. 20p.
Publication Year :
2024

Abstract

SUMMARY: While it is known that increased dissolved CO2 concentrations and rising sea surface temperature (ocean warming) can act interactively on marine phytoplankton, the ultimate molecular mechanisms underlying this interaction on a long‐term evolutionary scale are relatively unexplored. Here, we performed transcriptomics and quantitative metabolomics analyses, along with a physiological trait analysis, on the marine diatom Thalassiosira weissflogii adapted for approximately 3.5 years to warming and/or high CO2 conditions. We show that long‐term warming has more pronounced impacts than elevated CO2 on gene expression, resulting in a greater number of differentially expressed genes (DEGs). The largest number of DEGs was observed in populations adapted to warming + high CO2, indicating a potential synergistic interaction between these factors. We further identified the metabolic pathways in which the DEGs function and the metabolites with significantly changed abundances. We found that ribosome biosynthesis‐related pathways were upregulated to meet the increased material and energy demands after warming or warming in combination with high CO2. This resulted in the upregulation of energy metabolism pathways such as glycolysis, photorespiration, the tricarboxylic acid cycle, and the oxidative pentose phosphate pathway, as well as the associated metabolites. These metabolic changes help compensate for reduced photochemical efficiency and photosynthesis. Our study emphasizes that the upregulation of ribosome biosynthesis plays an essential role in facilitating the adaptation of phytoplankton to global ocean changes and elucidates the interactive effects of warming and high CO2 on the adaptation of marine phytoplankton in the context of global change. Significance Statement: The up‐regulation of ribosome biosynthesis plays an essential role in facilitating the adaptations of phytoplankton to ocean global change. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
09607412
Volume :
119
Issue :
4
Database :
Academic Search Index
Journal :
Plant Journal
Publication Type :
Academic Journal
Accession number :
180387760
Full Text :
https://doi.org/10.1111/tpj.16905