Evidence map›Paper›PMID 41615540›Full record

ArticlePhotosynthesis research2026

Different efficiency of Orange Carotenoid Protein (OCP)-related quenching during high light regulation of two cyanobacterial species.

Kui Xu, Shiquan Tang, Chun Chen, Yong Zhang, Zhengke Li, Zhen Chen, Weizhi Li, Xiongwen Chen, Philippe Juneau

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Article in Photosynthesis research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Kui XuHubei Key Laboratory of Edible Wild Plants Conservation and Utilization, College of Life Sciences, Hubei Normal University, Huangshi, 435002, China. xukui@hbnu.edu.cn.
Shiquan TangHubei Key Laboratory of Edible Wild Plants Conservation and Utilization, College of Life Sciences, Hubei Normal University, Huangshi, 435002, China.
Chun ChenHubei Key Laboratory of Edible Wild Plants Conservation and Utilization, College of Life Sciences, Hubei Normal University, Huangshi, 435002, China.
Yong ZhangFujian Key Laboratory of Pollution Control and Resource Recycling, College of Environmental and Resource Sciences, College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, China.
Zhengke LiSchool of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China.
Zhen ChenHubei Key Laboratory of Edible Wild Plants Conservation and Utilization, College of Life Sciences, Hubei Normal University, Huangshi, 435002, China.
Weizhi LiHubei Key Laboratory of Edible Wild Plants Conservation and Utilization, College of Life Sciences, Hubei Normal University, Huangshi, 435002, China.
Xiongwen ChenHubei Key Laboratory of Edible Wild Plants Conservation and Utilization, College of Life Sciences, Hubei Normal University, Huangshi, 435002, China.
Philippe JuneauDépartement des Sciences Biologiques, EcotoQ, GRIL, TOXEN, Ecotoxicology of Aquatic Microorganisms Laboratory, Université du Québec à Montréal, Succursale Centre-ville, C.P. 8888 Montréal, Québec, H3C 3P8, Canada. juneau.philippe@uqam.ca.

Funding

Natural Science Foundation of Hubei Province 2023 AFB1025Natural Sciences and Engineering Research Council of Canada RGPIN-2023-05681
6 · The paper itself

Abstract

The mechanisms of high light regulation in cyanobacteria play a vital role in allowing cyanobacteria to cope with high light stress. Orange Carotenoid Protein (OCP)-related quenching is the primary regulatory response to high light and has been extensively studied in the cyanobacterium Synechocystis sp. PCC6803 (hereafter Synechocystis sp.). However, the difference in the efficiency of this OCP-related quenching for optimal regulation of high light is still unclear among different cyanobacterial species. Therefore, we evaluated the efficiency of the OCP-related quenching mechanisms in Synechocystis sp. and Microcystis aeruginosa FACHB905 (hereafter M. aeruginosa). We found that M. aeruginosa had higher OCP-related quenching than Synechocystis sp. under high light stress. Interestingly, M. aeruginosa also showed faster OCP-related quenching under high light and faster recovery of OCP-related quenching when high light was turned off, compared to Synechocystis sp. Moreover, M. aeruginosa showed a higher ability to regulate high light stress than Synechocystis sp., suggesting that OCP-related quenching is more efficient in M. aeruginosa than in Synechocystis sp., permitting the former to cope with high light stress. The tertiary structures of OCP in Synechocystis sp. and M. aeruginosa demonstrate structural variations based on key amino acid substitution that may be responsible for the observed differences in the efficiency of OCP. These results suggest that OCP could have different structures with varied key amino acids, providing cyanobacteria with varied efficiencies to adapt to their environment.

Indexed as

Bacterial ProteinsLightMicrocystisSynechocystisCarotenoidsBacterial ProteinsCarotenoidsorange carotenoid protein, SynechocystisHigh light stressOrange carotenoid protein (OCP)-related non-photochemical quenchingState transitionSynechocystis sp. and Microcystis aeruginosa

Identifiers

PMID41615540

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