OEE1 affects the tobacco photosynthesis through the hormone regulation☆

文献类型： 外文期刊

第一作者： Deng, Lele

作者： Deng, Lele;Yang, Yekun;Yang, Wenwu;Shuai, Yanju;Wang, Kunmiao;Zhang, Jianduo;Xiang, Haiying;Li, Meng;Xie, Xiaodong;Yu, Zheyan;Dai, Changbo;Wu, Qi;Chen, Yudong

作者机构：

关键词： Metabolites; Tobacco; Oxygen-Evolving Enhancer Protein 1 (OEE1); Plant hormone; Photosynthesis

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：6.2； 五年影响因子：6.2 ）

ISSN： 0926-6690

年卷期： 2025 年 231 卷

页码：

收录情况： SCI

摘要： The Oxygen-Evolution Enhancer Protein 1 (OEE1), also known as Photosystem II Protein O (PsbO), is an important extrinsic subunit of photosystem II. However, understanding of the mechanism by which it affects plant growth and development in tobacco is limited. In this study, we first demonstrated that OEE1, which is mainly chloroplast-localized, was conserved in tobacco (Nicotiana tabacum) and expressed at high levels in leaves and leaf veins. The loss of function of OEE1 resulted in a defective plant growth phenotype, characterized by decreased plant height, narrower leaf angle and low photosynthetic efficiency. However, the overexpression line could complement this phenotype. Subsequent transcriptome analysis revealed differentially expressed genes (DEGs) in WT plants and oee1 mutants, with DEGs being enriched in cellular, hormone metabolic and photosynthetic pathways. Further analysis confirmed that the contents of endogenous hormones and chemical compositions, including amino acids, sugars, polyphenols and organic acids, were changed in the absence of OEE1. In conclusion, the results demonstrate that OEE1 regulates the photosynthesis pathway, which affects the endogenous metabolites and plant growth/development in a hormone-dependent manner in tobacco.

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