دورية أكاديمية
Cyclophilin 37 maintains electron transport via the cytochrome b6/f complex under high light in Arabidopsis.
| العنوان: | Cyclophilin 37 maintains electron transport via the cytochrome b6/f complex under high light in Arabidopsis. |
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| المؤلفون: | Yang X; State Key Laboratory of Hybrid Rice, Hubei Hongshan Laboratory, College of Life Sciences, Wuhan University, Wuhan 430072, China., Che Y; Department of Plant & Microbial Biology, University of California, 111 Koshland Hall, Berkeley, CA 94720, USA., García VJ; Department of Plant & Microbial Biology, University of California, 111 Koshland Hall, Berkeley, CA 94720, USA., Shen J; Department of Plant & Microbial Biology, University of California, 111 Koshland Hall, Berkeley, CA 94720, USA., Zheng Y; State Key Laboratory of Hybrid Rice, Hubei Hongshan Laboratory, College of Life Sciences, Wuhan University, Wuhan 430072, China., Su Z; State Key Laboratory of Hybrid Rice, Hubei Hongshan Laboratory, College of Life Sciences, Wuhan University, Wuhan 430072, China., Zhu L; State Key Laboratory of Hybrid Rice, Hubei Hongshan Laboratory, College of Life Sciences, Wuhan University, Wuhan 430072, China., Luan S; Department of Plant & Microbial Biology, University of California, 111 Koshland Hall, Berkeley, CA 94720, USA., Hou X; State Key Laboratory of Hybrid Rice, Hubei Hongshan Laboratory, College of Life Sciences, Wuhan University, Wuhan 430072, China. |
| المصدر: | Plant physiology [Plant Physiol] 2023 Aug 03; Vol. 192 (4), pp. 2803-2821. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Society of Plant Biologists Country of Publication: United States NLM ID: 0401224 Publication Model: Print Cited Medium: Internet ISSN: 1532-2548 (Electronic) Linking ISSN: 00320889 NLM ISO Abbreviation: Plant Physiol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Original Publication: Lancaster, Pa., American Society of Plant Physiologists. |
| مواضيع طبية MeSH: | Arabidopsis*/genetics , Arabidopsis*/metabolism, Electron Transport/physiology ; Cyclophilins/genetics ; Cyclophilins/metabolism ; Cytochromes b6/metabolism ; Reactive Oxygen Species/metabolism ; Chlorophyll/metabolism ; Photosynthesis/physiology ; Photosystem I Protein Complex/genetics ; Photosystem I Protein Complex/metabolism ; Photosystem II Protein Complex/metabolism ; Cytochrome b6f Complex/genetics ; Cytochrome b6f Complex/metabolism ; Plants/metabolism |
| مستخلص: | Plants have evolved multiple mechanisms to cope with diverse types of light stress, particularly the regulation of the electron transport chain (ETC). Under high light (HL) conditions, the balance of electron flux in the ETC is disturbed, which leads to the overaccumulation of reactive oxygen species (ROS) and results in photodamage and photoinhibition. The cytochrome (Cyt) b6/f complex, which coordinates electron transfer between photosystems I and II (PSI and PSII), plays an essential role in regulating the ETC and initiating photoprotection. However, how the Cyt b6/f complex is maintained under HL conditions remains unclear. Here, we report that the activity of the Cyt b6/f complex is sustained by thylakoid-localized cyclophilin 37 (CYP37) in Arabidopsis (Arabidopsis thaliana). Compared with wild-type plants, cyp37 mutants displayed an imbalance in electron transport from Cyt b6/f to PSI under HL stress, which led to increased ROS accumulation, decreased anthocyanin biosynthesis, and increased chlorophyll degradation. Surprisingly, CYP37's role in regulating ETC balance was independent of photosynthesis control, which was indicated by a higher Y (ND), an indicator of P700 oxidation in PSI. Furthermore, the interaction between CYP37 and photosynthetic electron transfer A (PetA), a subunit of the Cyt b6/f complex, suggests that the central function of CYP37 is to maintain Cyt b6/f complex activity rather than to serve as an assembly factor. Our study provides insights into how plants balance electron flow between PSII and PSI via Cyt b6/f complex under HL. Competing Interests: Conflict of interest statement. None declared. (© American Society of Plant Biologists 2023. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.) |
| المشرفين على المادة: | EC 5.2.1.- (Cyclophilins) 0 (Cytochromes b6) 0 (Reactive Oxygen Species) 1406-65-1 (Chlorophyll) 0 (Photosystem I Protein Complex) 0 (Photosystem II Protein Complex) 9035-40-9 (Cytochrome b6f Complex) |
| تواريخ الأحداث: | Date Created: 20230505 Date Completed: 20230807 Latest Revision: 20230807 |
| رمز التحديث: | 20230807 |
| DOI: | 10.1093/plphys/kiad268 |
| PMID: | 37144829 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1532-2548 |
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| DOI: | 10.1093/plphys/kiad268 |