ArticlePhotosynthesis research
Distinct physiological responses to a high light and low CO2 environment revealed by fluorescence quenching in photoautotrophically grown Chlamydomonas reinhardtii.
Article in Photosynthesis research. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 22 citations in OpenAlex.
- Allophycocyanin A is a carbon dioxide receptor in the cyanobacterial phycobilisome.Nature communications · 2022Article
- Photoprotection mechanisms under different COPhotosynthesis research · 2020Article
- Ascorbate Deficiency Does Not Limit Nonphotochemical Quenching inPlant physiology · 2020Article
- Diversity in photosynthetic electron transport under [COPhotosynthesis research · 2016Article
- Systems Analysis of the Response of Photosynthesis, Metabolism, and Growth to an Increase in Irradiance in the Photosynthetic Model Organism Chlamydomonas reinhardtii.The Plant cell · 2014Article
- State-transitions facilitate robust quantum yields and cause an over-estimation of electron transport in Dunaliella tertiolecta cells held at the CO₂ compensation point and re-supplied with DIC.Photosynthesis research · 2014Article
- CP29, a monomeric light-harvesting complex II protein, is essential for state transitions in Chlamydomonas reinhardtii.The Journal of biological chemistry · 2009Article
- Salinity affects the photoacclimation of Chlamydomonas raudensis Ettl UWO241.Photosynthesis research · 2009Article
- Expression analysis of genes associated with the induction of the carbon-concentrating mechanism in Chlamydomonas reinhardtii.Plant physiology · 2008Article
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3 authors at 1 institution in 1 country.
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Abstract
Mechanisms for countering environmental stress are essential to photosynthetic organisms. Alteration of the photosynthetic apparatus, a mechanism for balancing the flux of light energy and carbon fixation, can be characterized by fluorescence properties. In this study, we have established a simple protocol to determine the extent of energy-dependent quenching (qE) and quenching by state transition (qT) in Chlamydomonas cells by examining their fluorescence properties under light fluctuations. We identified qE as the uncoupler-sensitive NPQ component that was rapidly relaxed upon transition to dark conditions. We characterized the qT component by determining low-temperature fluorescence spectra and analyzing a state-transition-less mutant. By these methods, we observed that similar abiotic stresses-high light conditions (where excess energy is supplied) and low CO2 conditions (where energy utilization is limited)-induced different types of NPQ. High light conditions induced mainly qE-quenching that increased gradually while low CO2 conditions induced mainly qT-quenching that peaked in 20 min and then decreased gradually. That high light and low carbon signals induced different physiological responses suggests that they triggered different genetic responses, which altered protein expression under each of the conditions.
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