RuBisCO activase alleviates adverse effects of Nilaparvata lugens feeding on photosynthesis in Oryza sativa
文献类型： 外文期刊
第一作者： Li, Qingliang
作者： Li, Qingliang;Sun, Xia;Cao, Hui;Wang, Deya;Tan, Wei;Liang, Yan
作者机构： Zaozhuang Univ, Coll Life Sci, Zaozhuang 277160, Shandong, Peoples R China;Zaozhuang Univ, Coll Food Sci & Pharmaceut Engn, Zaozhuang 277160, Peoples R China;China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou, Peoples R China
关键词： RuBisCO activation; Photochemical reactions; Chlorophyll; Insect tolerance; Nonstomatal factors
期刊名称：ARTHROPOD-PLANT INTERACTIONS （ 2022影响因子：1.6； 五年影响因子：1.9 ）
ISSN： 1872-8855
年卷期： 2024 年 18 卷 1 期
收录情况： SCI
摘要： Brown planthopper (Nilaparvata lugens Stal. Homoptera, Delphacidae) is a pest of rice (Oryza sativa L. Cyperales, Poaceae), whose feeding significantly reduced photosynthesis. Ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) activase (RCA) is a key photosynthetic enzyme. The aim of this study was to examine whether RCA gene of O. sativa (OsRCA) affects photosynthetic efficiency and thereby growth performance of rice infested by brown planthoppers. For this, we conducted experiments in which we overexpressed OsRCA large and small isoforms (oeRCA(L) and oeRCA(S), respectively) and silenced OsRCA (irRCA) in rice. After infestation by brown planthoppers, the photosynthetic rate, plant height and dry weight of overexpressed OsRCA lines were significantly higher than those of wild-type (WT) and irRCA. Initial RuBisCO activity in oeRCA(L) and oeRCA(S) was also higher than in WT and irRCA. Overexpression OsRCA alleviated the adverse response of the decrease in the chlorophyll content, maximum photochemical efficiency (Fv/Fm) and photochemical performance index (PIABS). The increase in energy dissipation and quantum yield of energy dissipation in oeRCA(L) and oeRCA(S) after infestation by brown planthoppers werer much lower than in WT and irRCA. Thus, we concluded that overexpression of OsRCA, particularly OsRCA(S), can alleviate chlorophyll degradation and reduce heat dissipation of photosystem, thereby reducing the degree of photosynthesis damage caused by brown planthoppers infestation.
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