A5052604272- Photosynthetic Processes and Mechanisms
- Algal biology and biofuel production
- Biocrusts and Microbial Ecology
- Mitochondrial Function and Pathology
Ludwig-Maximilians-Universität München
2025
Technion – Israel Institute of Technology
2022-2024
SUMMARY While light is the driving force of photosynthesis, excessive can be harmful. Photoinhibition one key processes that limit photosynthetic productivity. A well‐defined mechanism protects from photoinhibition has been described. Chlorella ohadii a green micro‐alga, isolated biological desert soil crusts, which thrives under extreme high (HL). Here, we show this alga evolved unique protection mechanisms distinct those Chlamydomonas reinhardtii or plants. When grown HL, drastic reduction...
The phosphorylation of photosystem II (PSII) and its antenna (LHCII) proteins has been studied, involvement in state transitions PSII repair is known. Yet, little known about the I (PSI) (LHCI) proteins. Here, we applied proteomics analysis to generate a map sites PSI-LHCI Chlorella ohadii cells that were grown under low or extreme high-light intensities (LL HL). Furthermore, analyzed content oxidized tryptophans protein degradation products these cells, estimate light-induced damage...
Abstract Nonphotochemical quenching (NPQ) mechanisms are crucial for protecting photosynthesis from photoinhibition in plants, algae, and cyanobacteria, their modulation is a long-standing goal improving crop yields. The current work demonstrates that Chlorella ohadii, green microalga thrives the desert under high light intensities fatal to many photosynthetic organisms does not perform nor require NPQ protect constant light. Instead of dissipating excess energy, it minimizes its uptake by...
Abstract Non-photochemical quenching (NPQ) mechanisms are crucial for protecting photosynthesis from photoinhibition in plants, algae, and cyanobacteria, their modulation is a long-standing goal improving crop yields. The current work demonstrates that Chlorella ohadii , green micro-alga thrives the desert under high light intensities which fatal to many photosynthetic organisms, does not perform nor require NPQ protect constant light. Instead of dissipating excess energy, it minimizes its...
The phosphorylation of photosystem II (PSII) and its antenna (LHCII) proteins has been extensively studied involvement in state transitions PSII repair is well known. Yet, very little known about the extent functions I (PSI) (LHCI) proteins. Here, two proteomics methods were applied to generate a detailed map sites PSI-LHCI Chlorella ohadii cells that grown under low- or extreme high-light intensities (LL HL). Furthermore, we analyzed content oxidized tryptophans these cell types estimate...
Abstract While light is the driving force of photosynthesis, excessive can be harmful. Photoinhibition, or light-induced photo-damage, one key processes limiting photosynthesis. When absorbed exceeds amount that dissipated by photosynthetic electron flow and other processes, damaging radicals are formed mostly inactivate photosystem II (PSII). A well-defined mechanism protects apparatus from photoinhibition has been described in model green alga Chlamydomonas reinhardtii plants. Chlorella...