Details
| Original language | English |
|---|---|
| Article number | 2442 |
| Journal | Plants |
| Volume | 12 |
| Issue number | 13 |
| Publication status | Published - 25 Jun 2023 |
Abstract
Lemnaceae are small freshwater plants with extraordinary high growth rates. We aimed to test whether this correlates with a more efficient photosynthesis, the primary energy source for growth. To this end, we compared photosynthesis properties of the duckweed Lemna minor and the terrestrial model plant Arabidopsis thaliana. Chlorophyll fluorescence analyses revealed high similarity in principle photosynthesis characteristics; however, Lemna exhibited a more effective light energy transfer into photochemistry and more stable photosynthesis parameters especially under high light intensities. Western immunoblot analyses of representative photosynthesis proteins suggested potential post-translational modifications in Lemna proteins that are possibly connected to this. Phospho-threonine phosphorylation patterns of thylakoid membrane proteins displayed a few differences between the two species. However, phosphorylation-dependent processes in Lemna such as photosystem II antenna association and the recovery from high-light-induced photoinhibition were not different from responses known from terrestrial plants. We thus hypothesize that molecular differences in Lemna photosynthesis proteins are associated with yet unidentified mechanisms that improve photosynthesis and growth efficiencies. We also developed a high-magnification video imaging approach for Lemna multiplication which is useful to assess the impact of external factors on Lemna photosynthesis and growth.
Keywords
- Arabidopsis thaliana, Lemna minor, photoinhibition, photosynthesis, photosystem antenna, post-translational modifications
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Ecology, Evolution, Behavior and Systematics
- Environmental Science(all)
- Ecology
- Agricultural and Biological Sciences(all)
- Plant Science
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In: Plants, Vol. 12, No. 13, 2442, 25.06.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Photosynthesis in the Biomass Model Species Lemna minor Displays Plant-Conserved and Species-Specific Features
AU - Liebers, Monique
AU - Hommel, Elisabeth
AU - Grübler, Björn
AU - Danehl, Jakob
AU - Offermann, Sascha
AU - Pfannschmidt, Thomas
N1 - Funding Information: This study was financially supported by the PEPS ExoMod program of the CNRS (France) and internal resources from LUH.
PY - 2023/6/25
Y1 - 2023/6/25
N2 - Lemnaceae are small freshwater plants with extraordinary high growth rates. We aimed to test whether this correlates with a more efficient photosynthesis, the primary energy source for growth. To this end, we compared photosynthesis properties of the duckweed Lemna minor and the terrestrial model plant Arabidopsis thaliana. Chlorophyll fluorescence analyses revealed high similarity in principle photosynthesis characteristics; however, Lemna exhibited a more effective light energy transfer into photochemistry and more stable photosynthesis parameters especially under high light intensities. Western immunoblot analyses of representative photosynthesis proteins suggested potential post-translational modifications in Lemna proteins that are possibly connected to this. Phospho-threonine phosphorylation patterns of thylakoid membrane proteins displayed a few differences between the two species. However, phosphorylation-dependent processes in Lemna such as photosystem II antenna association and the recovery from high-light-induced photoinhibition were not different from responses known from terrestrial plants. We thus hypothesize that molecular differences in Lemna photosynthesis proteins are associated with yet unidentified mechanisms that improve photosynthesis and growth efficiencies. We also developed a high-magnification video imaging approach for Lemna multiplication which is useful to assess the impact of external factors on Lemna photosynthesis and growth.
AB - Lemnaceae are small freshwater plants with extraordinary high growth rates. We aimed to test whether this correlates with a more efficient photosynthesis, the primary energy source for growth. To this end, we compared photosynthesis properties of the duckweed Lemna minor and the terrestrial model plant Arabidopsis thaliana. Chlorophyll fluorescence analyses revealed high similarity in principle photosynthesis characteristics; however, Lemna exhibited a more effective light energy transfer into photochemistry and more stable photosynthesis parameters especially under high light intensities. Western immunoblot analyses of representative photosynthesis proteins suggested potential post-translational modifications in Lemna proteins that are possibly connected to this. Phospho-threonine phosphorylation patterns of thylakoid membrane proteins displayed a few differences between the two species. However, phosphorylation-dependent processes in Lemna such as photosystem II antenna association and the recovery from high-light-induced photoinhibition were not different from responses known from terrestrial plants. We thus hypothesize that molecular differences in Lemna photosynthesis proteins are associated with yet unidentified mechanisms that improve photosynthesis and growth efficiencies. We also developed a high-magnification video imaging approach for Lemna multiplication which is useful to assess the impact of external factors on Lemna photosynthesis and growth.
KW - Arabidopsis thaliana
KW - Lemna minor
KW - photoinhibition
KW - photosynthesis
KW - photosystem antenna
KW - post-translational modifications
UR - http://www.scopus.com/inward/record.url?scp=85164741245&partnerID=8YFLogxK
U2 - 10.3390/plants12132442
DO - 10.3390/plants12132442
M3 - Article
AN - SCOPUS:85164741245
VL - 12
JO - Plants
JF - Plants
SN - 2223-7747
IS - 13
M1 - 2442
ER -