Heat stress-induced effects of photosystem I: an overview of structural and functional responses

Alexander G. Ivanov, Maya Y. Velitchkova, Suleyman I. Allakhverdiev, Norman P.A. Huner

    Research output: Contribution to journalReview articlepeer-review

    27 Citations (Scopus)

    Abstract

    Temperature is one of the main factors controlling the formation, development, and functional performance of the photosynthetic apparatus in all photoautotrophs (green plants, algae, and cyanobacteria) on Earth. The projected climate change scenarios predict increases in air temperature across Earth’s biomes ranging from moderate (3–4 °C) to extreme (6–8 °C) by the year 2100 (IPCC in Climate change 2007: The physical science basis: summery for policymakers, IPCC WG1 Fourth Assessment Report 2007; Climate change 2014: Mitigation of Climate Change, IPCC WG3 Fifth Assessment Report 2014). In some areas, especially of the Northern hemisphere, even more extreme warm seasonal temperatures may occur, which possibly will cause significant negative effects on the development, growth, and yield of important agricultural crops. It is well documented that high temperatures can cause direct damages of the photosynthetic apparatus and photosystem II (PSII) is generally considered to be the primary target of heat-induced inactivation of photosynthesis. However, since photosystem I (PSI) is considered to determine the global amount of enthalpy in living systems (Nelson in Biochim Biophys Acta 1807:856–863, 2011; Photosynth Res 116:145–151, 2013), the effects of elevated temperatures on PSI might be of vital importance for regulating the photosynthetic response of all photoautotrophs in the changing environment. In this review, we summarize the experimental data that demonstrate the critical impact of heat-induced alterations on the structure, composition, and functional performance of PSI and their significant implications on photosynthesis under future climate change scenarios.

    Original languageEnglish
    Pages (from-to)17-30
    Number of pages14
    JournalPhotosynthesis research
    Volume133
    Issue number1-3
    DOIs
    Publication statusPublished - Sep 1 2017

    Keywords

    • Environmental changes
    • Heat stress
    • PSI photochemistry
    • Photosynthetic apparatus
    • Photosystem I
    • Thylakoid membranes

    ASJC Scopus subject areas

    • Biochemistry
    • Plant Science
    • Cell Biology

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