Cold Adaptation Mechanisms of a Snow Alga Chlamydomonas nivalis During Temperature Fluctuations
Frontiers in Microbiology, ISSN: 1664-302X, Vol: 11, Page: 611080
2021
- 15Citations
- 49Captures
Metric Options: Counts1 Year3 YearSelecting the 1-year or 3-year option will change the metrics count to percentiles, illustrating how an article or review compares to other articles or reviews within the selected time period in the same journal. Selecting the 1-year option compares the metrics against other articles/reviews that were also published in the same calendar year. Selecting the 3-year option compares the metrics against other articles/reviews that were also published in the same calendar year plus the two years prior.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Metrics Details
- Citations15
- Citation Indexes15
- 15
- CrossRef11
- Captures49
- Readers49
- 49
Article Description
Cold environments, such as glaciers and alpine regions, constitute unique habitats for organisms living on Earth. In these harsh ecosystems, snow algae survive, florish, and even become primary producers for microbial communities. How the snow algae maintain physiological activity during violent ambient temperature changes remains unsolved. To explore the cold adaptation mechanisms of the unicellular snow alga Chlamydomonas nivalis, we compared its physiological responses to a model organism from the same genus, Chlamydomonas reinhardtii. When both cell types were exposed to a shift from 22°C to 4°C, C. nivalis exhibited an apparent advantage in cold tolerance over C. reinhardtii, as C. nivalis had both a higher growth rate and photosynthetic efficiency. To determine the cold tolerance mechanisms of C. nivalis, RNA sequencing was used to compare transcriptomes of both species after 1 h of cold treatment, mimicking temperature fluctuations in the polar region. Differential expression analysis showed that C. nivalis had fewer transcriptomic changes and was more stable during rapid temperature decrease relative to C. reinhardtii, especially for the expression of photosynthesis related genes. Additionally, we found that transcription in C. nivalis was precisely regulated by the cold response network, consisting of at least 12 transcription factors and 3 RNA-binding proteins. Moreover, genes participating in nitrogen metabolism, the pentose phosphate pathway, and polysaccharide biosynthesis were upregulated, indicating that increasing resource assimilation and remodeling of metabolisms were critical for cold adaptation in C. nivalis. Furthermore, we identified horizontally transferred genes differentially expressed in C. nivalis, which are critical for cold adaptation in other psychrophiles. Our results reveal that C. nivalis adapts rapid temperature decrease by efficiently regulating transcription of specific genes to optimize resource assimilation and metabolic pathways, providing critical insights into how snow algae survive and propagate in cold environments.
Bibliographic Details
10.3389/fmicb.2020.611080; 10.3389/fmicb.2020.611080.s003; 10.3389/fmicb.2020.611080.s002; 10.3389/fmicb.2020.611080.s001; 10.3389/fmicb.2020.611080.s007; 10.3389/fmicb.2020.611080.s006; 10.3389/fmicb.2020.611080.s005; 10.3389/fmicb.2020.611080.s008; 10.3389/fmicb.2020.611080.s004
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85099765107&origin=inward; http://dx.doi.org/10.3389/fmicb.2020.611080; http://www.ncbi.nlm.nih.gov/pubmed/33584575; https://www.frontiersin.org/articles/10.3389/fmicb.2020.611080/full; https://www.frontiersin.org/articles/10.3389/fmicb.2020.611080/supplementary-material/10.3389/fmicb.2020.611080.s003; http://dx.doi.org/10.3389/fmicb.2020.611080.s003; https://www.frontiersin.org/articles/10.3389/fmicb.2020.611080/supplementary-material/10.3389/fmicb.2020.611080.s002; http://dx.doi.org/10.3389/fmicb.2020.611080.s002; https://www.frontiersin.org/articles/10.3389/fmicb.2020.611080/supplementary-material/10.3389/fmicb.2020.611080.s001; http://dx.doi.org/10.3389/fmicb.2020.611080.s001; https://www.frontiersin.org/articles/10.3389/fmicb.2020.611080/supplementary-material/10.3389/fmicb.2020.611080.s007; http://dx.doi.org/10.3389/fmicb.2020.611080.s007; https://www.frontiersin.org/articles/10.3389/fmicb.2020.611080/supplementary-material/10.3389/fmicb.2020.611080.s006; http://dx.doi.org/10.3389/fmicb.2020.611080.s006; https://www.frontiersin.org/articles/10.3389/fmicb.2020.611080/supplementary-material/10.3389/fmicb.2020.611080.s005; http://dx.doi.org/10.3389/fmicb.2020.611080.s005; https://www.frontiersin.org/articles/10.3389/fmicb.2020.611080/supplementary-material/10.3389/fmicb.2020.611080.s008; http://dx.doi.org/10.3389/fmicb.2020.611080.s008; https://www.frontiersin.org/articles/10.3389/fmicb.2020.611080/supplementary-material/10.3389/fmicb.2020.611080.s004; http://dx.doi.org/10.3389/fmicb.2020.611080.s004; https://dx.doi.org/10.3389/fmicb.2020.611080.s004; https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2020.611080/full; https://dx.doi.org/10.3389/fmicb.2020.611080.s002; https://dx.doi.org/10.3389/fmicb.2020.611080; https://dx.doi.org/10.3389/fmicb.2020.611080.s008; https://dx.doi.org/10.3389/fmicb.2020.611080.s005; https://dx.doi.org/10.3389/fmicb.2020.611080.s003; https://dx.doi.org/10.3389/fmicb.2020.611080.s001; https://dx.doi.org/10.3389/fmicb.2020.611080.s006; https://dx.doi.org/10.3389/fmicb.2020.611080.s007
Frontiers Media SA
Provide Feedback
Have ideas for a new metric? Would you like to see something else here?Let us know