Photosynthetic adaptation to polar life: Energy balance, photoprotection and genetic redundancy
The persistent low temperature that characterize polar habitats combined with the requirement for light for all photoautotrophs creates a conundrum. The absorption of too much light at low temperature can cause an energy imbalance that decreases photosynthetic performance that has a negative impact...
Published in: | Journal of Plant Physiology |
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Online Access: | http://www.osti.gov/servlets/purl/1977389 https://www.osti.gov/biblio/1977389 https://doi.org/10.1016/j.jplph.2021.153557 |
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ftosti:oai:osti.gov:1977389 2023-07-30T03:58:15+02:00 Photosynthetic adaptation to polar life: Energy balance, photoprotection and genetic redundancy Hüner, Norman P. A. Smith, David R. Cvetkovska, Marina Zhang, Xi Ivanov, Alexander G. Szyszka-Mroz, Beth Kalra, Isha Morgan-Kiss, Rachael 2023-06-30 application/pdf http://www.osti.gov/servlets/purl/1977389 https://www.osti.gov/biblio/1977389 https://doi.org/10.1016/j.jplph.2021.153557 unknown http://www.osti.gov/servlets/purl/1977389 https://www.osti.gov/biblio/1977389 https://doi.org/10.1016/j.jplph.2021.153557 doi:10.1016/j.jplph.2021.153557 59 BASIC BIOLOGICAL SCIENCES 2023 ftosti https://doi.org/10.1016/j.jplph.2021.153557 2023-07-11T10:27:28Z The persistent low temperature that characterize polar habitats combined with the requirement for light for all photoautotrophs creates a conundrum. The absorption of too much light at low temperature can cause an energy imbalance that decreases photosynthetic performance that has a negative impact on growth and can affect long-term survival. The goal of this review is to survey the mechanism(s) by which polar photoautotrophs maintain cellular energy balance, that is, photostasis to overcome the potential for cellular energy imbalance in their low temperature environments. Photopsychrophiles are photosynthetic organisms that are obligately adapted to low temperature (0⁰- 15 °C) but usually die at higher temperatures (≥20 °C). In contrast, photopsychrotolerant species can usually tolerate and survive a broad range of temperatures (5⁰- 40 °C). First, we summarize the basic concepts of excess excitation energy, energy balance, photoprotection and photostasis and their importance to survival in polar habitats. Second, we compare the photoprotective mechanisms that underlie photostasis and survival in aquatic cyanobacteria and green algae as well as terrestrial Antarctic and Arctic plants. We show that polar photopsychrophilic and photopsychrotolerant organisms attain energy balance at low temperature either through a regulated reduction in the efficiency of light absorption or through enhanced capacity to consume photosynthetic electrons by the induction of O 2 as an alternative electron acceptor. Finally, we compare the published genomes of three photopsychrophilic and one photopsychrotolerant alga with five mesophilic green algae including the model green alga, Chlamydomonas reinhardtii. We relate our genomic analyses to photoprotective mechanisms that contribute to the potential attainment of photostasis. Finally, we discuss how the observed genomic redundancy in photopsychrophilic genomes may confer energy balance, photoprotection and resilience to their harsh polar environment. Primary production in aquatic, ... Other/Unknown Material Antarc* Antarctic Arctic SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Antarctic Arctic Journal of Plant Physiology 268 153557 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
59 BASIC BIOLOGICAL SCIENCES |
spellingShingle |
59 BASIC BIOLOGICAL SCIENCES Hüner, Norman P. A. Smith, David R. Cvetkovska, Marina Zhang, Xi Ivanov, Alexander G. Szyszka-Mroz, Beth Kalra, Isha Morgan-Kiss, Rachael Photosynthetic adaptation to polar life: Energy balance, photoprotection and genetic redundancy |
topic_facet |
59 BASIC BIOLOGICAL SCIENCES |
description |
The persistent low temperature that characterize polar habitats combined with the requirement for light for all photoautotrophs creates a conundrum. The absorption of too much light at low temperature can cause an energy imbalance that decreases photosynthetic performance that has a negative impact on growth and can affect long-term survival. The goal of this review is to survey the mechanism(s) by which polar photoautotrophs maintain cellular energy balance, that is, photostasis to overcome the potential for cellular energy imbalance in their low temperature environments. Photopsychrophiles are photosynthetic organisms that are obligately adapted to low temperature (0⁰- 15 °C) but usually die at higher temperatures (≥20 °C). In contrast, photopsychrotolerant species can usually tolerate and survive a broad range of temperatures (5⁰- 40 °C). First, we summarize the basic concepts of excess excitation energy, energy balance, photoprotection and photostasis and their importance to survival in polar habitats. Second, we compare the photoprotective mechanisms that underlie photostasis and survival in aquatic cyanobacteria and green algae as well as terrestrial Antarctic and Arctic plants. We show that polar photopsychrophilic and photopsychrotolerant organisms attain energy balance at low temperature either through a regulated reduction in the efficiency of light absorption or through enhanced capacity to consume photosynthetic electrons by the induction of O 2 as an alternative electron acceptor. Finally, we compare the published genomes of three photopsychrophilic and one photopsychrotolerant alga with five mesophilic green algae including the model green alga, Chlamydomonas reinhardtii. We relate our genomic analyses to photoprotective mechanisms that contribute to the potential attainment of photostasis. Finally, we discuss how the observed genomic redundancy in photopsychrophilic genomes may confer energy balance, photoprotection and resilience to their harsh polar environment. Primary production in aquatic, ... |
author |
Hüner, Norman P. A. Smith, David R. Cvetkovska, Marina Zhang, Xi Ivanov, Alexander G. Szyszka-Mroz, Beth Kalra, Isha Morgan-Kiss, Rachael |
author_facet |
Hüner, Norman P. A. Smith, David R. Cvetkovska, Marina Zhang, Xi Ivanov, Alexander G. Szyszka-Mroz, Beth Kalra, Isha Morgan-Kiss, Rachael |
author_sort |
Hüner, Norman P. A. |
title |
Photosynthetic adaptation to polar life: Energy balance, photoprotection and genetic redundancy |
title_short |
Photosynthetic adaptation to polar life: Energy balance, photoprotection and genetic redundancy |
title_full |
Photosynthetic adaptation to polar life: Energy balance, photoprotection and genetic redundancy |
title_fullStr |
Photosynthetic adaptation to polar life: Energy balance, photoprotection and genetic redundancy |
title_full_unstemmed |
Photosynthetic adaptation to polar life: Energy balance, photoprotection and genetic redundancy |
title_sort |
photosynthetic adaptation to polar life: energy balance, photoprotection and genetic redundancy |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1977389 https://www.osti.gov/biblio/1977389 https://doi.org/10.1016/j.jplph.2021.153557 |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_relation |
http://www.osti.gov/servlets/purl/1977389 https://www.osti.gov/biblio/1977389 https://doi.org/10.1016/j.jplph.2021.153557 doi:10.1016/j.jplph.2021.153557 |
op_doi |
https://doi.org/10.1016/j.jplph.2021.153557 |
container_title |
Journal of Plant Physiology |
container_volume |
268 |
container_start_page |
153557 |
_version_ |
1772821108589854720 |