Photostasis and photosynthetic adaptation to polar life.

Photostasis is the light-dependent maintenance of energy balance associated with cellular homeostasis in photoautotrophs. We review evidence that illustrates how photosynthetic adaptation in polar photoautrophs such as aquatic green algae, cyanobacteria, boreal conifers as well as terrestrial angios...

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Bibliographic Details
Published in:Photosynthesis Research
Main Authors: Hüner, Norman P A, Ivanov, Alexander G, Szyszka-Mroz, Beth, Savitch, Leonid V, Smith, David R, Kata, Victoria
Format: Review
Language:English
Published: Springer 2024
Subjects:
Adaptation
Genomes
Photoautrophs
Photostasis
Polar
Redundancy
Antarctic
Arctic
Antarc*
Online Access:https://doi.org/10.1007/s11120-024-01104-7
https://pubmed.ncbi.nlm.nih.gov/38865029
Description
Summary:Photostasis is the light-dependent maintenance of energy balance associated with cellular homeostasis in photoautotrophs. We review evidence that illustrates how photosynthetic adaptation in polar photoautrophs such as aquatic green algae, cyanobacteria, boreal conifers as well as terrestrial angiosperms exhibit an astonishing plasticity in structure and function of the photosynthetic apparatus. This plasticity contributes to the maintenance of photostasis, which is essential for the long-term survival in the seemingly inhospitable Antarctic and Arctic habitats. However, evidence indicates that polar photoautrophic species exhibit different functional solutions for the maintenance of photostasis. We suggest that this reflects, in part, the genetic diversity symbolized by inherent genetic redundancy characteristic of polar photoautotrophs which enhances their survival in a thermodynamically challenging environment.

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