Temperature effects on photosynthetic performance of Antarctic lichen Dermatocarpon polyphyllizum: a chlorophyll fluorescence study

Marečková, Michaela; Barták, Miloš; Hájek, Josef

doi:10.1007/s00300-019-02464-w

Cited by 26 publications

(20 citation statements)

References 65 publications

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“…2). The lack of L-band at the other temperatures was consistent with an earlier study (Marečková et al 2019) that reported no L-band within the temperature range of +4 to +22°C in D. polyphyllizum. The L-band was found in the range 0.10-0.15 ms and associated with the changes in the energetic connectivity, caused by lower thermal stability of the system (Yusuf et al 2010).…”

Section: K- L-bandssupporting

confidence: 91%

“…Temperature response curves of FV/FM and PIABS (Fig. 3) were similar to those reported for poikilohydric autotrophs from polar and alpine ecosystems (Folgar- Cameán and , Marečková et al 2019. In recent studies (e.g., Chen et al 2016), PIABS is considered a standard for identification of heat sensitivity of plants.…”

Section: Ojip-derived Parameters In Response To Temperaturesupporting

confidence: 80%

“…In high temperature, majority of lichen species desiccate rapidly and become photosynthetically inactive in tens of minutes. Therefore, previous studies on the tolerance of lichens to temperature stress were focused on a response of the OJIP-derived parameters to low temperature (Marečková et al 2019). In previous study (Marečková et al 2019), we found that D. polyphyllizum treated at -5°C showed an increase in several parameters: ABS/RC, φD0, and DI0/RC, which reflect an increase in apparent antenna size of PSII and increase in dissipation of absorbed energy by nonphotochemical processes.…”

Section: Introductionmentioning

confidence: 78%

“…In high temperaturestressed samples, the shape of the OJIP transient was flattened with more pronounced decrease of fluorescence after reaching the peak P. The time of reaching the peak P proved to be also very sensitive to the temperature changes. Along with increasing temperature, the peak P was reached sooner than that at the temperature optimum [+20°C, the temperature optimum was evaluated for D. pollyphyllizum from Antarctica in the earlier study of Marečková et al (2019)] and it was reached later with decreasing temperature.…”

Section: Resultsmentioning

confidence: 99%

“…The K-band is reported in cultures of lichen symbiotic alga Trebouxia sp. (Guéra et al 2016) and Diplosphaera possessing D. polyphyllizum (Marečková et al 2019). In heat-treated lichen Parmelina tiliacea, Oukarroum et al (2012) found the K-step.…”

Section: K- L-bandsmentioning

confidence: 98%

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Special issue in honour of Prof. Reto J. Strasser - Analysis of K- and L-band appearance in OJIPs in Antarctic lichens in low and high temperature

Bednaříková¹,

Folgar-Cameán²,

Kučerová³

et al. 2020

Photosynt.

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In this study, we evaluated the effect of temperature on the fast chlorophyll fluorescence (ChlF) transient (OJIP) and OJIP-derived parameters in Antarctic lichens Xanthoria elegans, Usnea antarctica, and Dermatocarpon polyphyllizum. Samples were exposed to a range of temperatures (-5 to +45°C) and measured after 15-min equilibration. High temperature (+45°C) caused a decrease of ChlF, an increased J-step, and shortened time to reach peak ChlF (FP). Temperature below +5°C caused the increase of ChlF and J-step. The K-band was identified in X. elegans (above +20°C), U. antarctica (+35°C), and D. polyphyllizum (+45°C). L-band was well distinguishable in X. elegans (+45°C). As indicated by the OJIP-derived parameters, high temperature inhibited photosystem II function. The inhibition was apparent as less effective energetic connectivity. The OJIP transients and auxiliary measurement of ChlF temperature curves suggested that X. elegans had the lowest termostability among the experimental species.

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Section: K- L-bandssupporting

confidence: 91%

Section: Ojip-derived Parameters In Response To Temperaturesupporting

confidence: 80%

Section: Introductionmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Section: K- L-bandsmentioning

confidence: 98%

See 3 more Smart Citations

Special issue in honour of Prof. Reto J. Strasser - Analysis of K- and L-band appearance in OJIPs in Antarctic lichens in low and high temperature

Bednaříková¹,

Folgar-Cameán²,

Kučerová³

et al. 2020

Photosynt.

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Biogeochemistry of the Antarctic Coasts

Karayakath

Pattanaik

Saini

et al. 2022

Systems Biogeochemistry of Major Marine Biomes

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Continuous monitoring of chlorophyll a fluorescence and microclimatic conditions reveals warming-induced physiological damage in biocrust-forming lichens

et al. 2022

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Purpose Biocrust communities, which are important regulators of multiple ecosystem functions in drylands, are highly sensitive to climate change. There is growing evidence of the negative impacts of warming on the performance of biocrust constituents like lichens in the field. Here, we aim to understand the physiological basis behind this pattern. Methods Using a unique manipulative climate change experiment, we monitored every 30 minutes and for 9 months the chlorophyll a fluorescence and microclimatic conditions (lichen surface temperature, relative moisture and photosynthetically active radiation) of Psora decipiens, a key biocrust constituent in drylands worldwide. This long-term monitoring resulted in 11,847 records at the thallus-level, which allowed us to evaluate the impacts of ~2.3 °C simulated warming treatment on the physiology of Psora at an unprecedented level of detail. Results Simulated warming and the associated decrease in relative moisture promoted by this treatment negatively impacted the physiology of Psora, especially during the diurnal period of the spring, when conditions are warmer and drier. These impacts were driven by a mechanism based on the reduction of the length of the periods allowing net photosynthesis, and by declines in Yield and Fv/Fm under simulated warming. Conclusion Our study reveals the physiological basis explaining observed negative impacts of ongoing global warming on biocrust-forming lichens in the field. The functional response observed could limit the growth and cover of biocrust-forming lichens in drylands in the long-term, negatively impacting in key soil attributes such as biogeochemical cycles, water balance, biological activity and ability of controlling erosion.

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Temperature effects on photosynthetic performance of Antarctic lichen Dermatocarpon polyphyllizum: a chlorophyll fluorescence study

Cited by 26 publications

References 65 publications

Special issue in honour of Prof. Reto J. Strasser - Analysis of K- and L-band appearance in OJIPs in Antarctic lichens in low and high temperature

Special issue in honour of Prof. Reto J. Strasser - Analysis of K- and L-band appearance in OJIPs in Antarctic lichens in low and high temperature

Biogeochemistry of the Antarctic Coasts

Continuous monitoring of chlorophyll a fluorescence and microclimatic conditions reveals warming-induced physiological damage in biocrust-forming lichens

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