ArticlePhotosynthesis research2016
PSI photoinhibition is more related to electron transfer from PSII to PSI rather than PSI redox state in Psychotria rubra.
Article in Photosynthesis research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 28 citations in OpenAlex.
- Responses of Linear and Cyclic Electron Flow to Nitrogen Stress in an N-Sensitive SpeciesFrontiers in plant science · 2022Article
- Responses of photosystem to long-term light stress in a typically shade-tolerant speciesFrontiers in plant science · 2022Article
- Stem Photosynthesis-A Key Element of Grass Pea (International journal of molecular sciences · 2021Article
- In vivo regulation of thylakoid proton motive force in immature leaves.Photosynthesis research · 2018Article
- Photoinhibition of photosystem I in Nephrolepis falciformis depends on reactive oxygen species generated in the chloroplast stroma.Photosynthesis research · 2018Article
- Chloroplastic ATP Synthase Alleviates Photoinhibition of Photosystem I in Tobacco Illuminated at Chilling Temperature.Frontiers in plant science · 2018Article
- Moderate Photoinhibition of Photosystem II Significantly Affects Linear Electron Flow in the Shade-Demanding PlantFrontiers in plant science · 2018Article
- Cyclic Electron Flow around Photosystem I Promotes ATP Synthesis Possibly Helping the Rapid Repair of Photodamaged Photosystem II at Low Light.Frontiers in plant science · 2018Article
- Superoxide generated in the chloroplast stroma causes photoinhibition of photosystem I in the shade-establishing tree species Psychotria henryi.Photosynthesis research · 2017Article
- Responses of Photosystem I Compared with Photosystem II to Fluctuating Light in the Shade-Establishing Tropical Tree SpeciesFrontiers in plant science · 2016Article
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Authors and funding
5 authors at 3 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Although it has been believed that wild-type plants are capable of protecting photosystem I (PSI) under high light, our previous study indicates that PSI is sensitive to high light in the shade-established tree species Psychotria rubra. However, the underlying physiological mechanisms are unclear. In this study, we examined the roles of electron transfer from PSII to PSI and PSI redox state in PSI photoinhibition in P. rubra by treatments with lincomycin (Lin), diuron (DCMU), and methyl viologen (MV). After exposure to 2000 μmol photons m(-2) s(-1) for 2 h, PSI activity decreased by 35, 29, 3, and 49 % in samples treated with H2O, Lin, DCMU, and MV, respectively. Meanwhile, the MV-treated samples showed higher P700 oxidation ratio than the H2O-treated samples, suggesting the PSI photoinhibition under high light was accompanied by high levels of P700 oxidation ratio. PSI photoinhibition was alleviated in the DCMU-treated samples but was accelerated in the MV-treated samples, suggesting that PSI photoinhibition in P. rubra was mainly controlled by electron transfer from PSII to PSI. Taking together, PSI photoinhibition is more related to electron transfer from PSII to PSI rather than PSI redox state in P. rubra, which is different from the mechanisms of PSI photoinhibition in Arabidopsis thaliana and cucumber.
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