Proteomic Analysis of the Response of Liangyoupeijiu (Super High-Yield Hybrid Rice) Seedlings to Cold Stress

• Published in: Journal of integrative plant biology Vol. 48; no. 8; pp. 945 - 951
• Main Authors: Yang, Ping-Fang, Li, Xiao-Juan, Liang, Yu, Jing, Yu-Xiang, Shen, Shi-Hua, Kuang, Ting-Yun
• Format: Journal Article
• Language: English
• Published: Melbourne, Australia Blackwell Publishing Asia 01.08.2006; Graduate College of the Chinese Academy of Sciences, Beijing 100039, China%Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany,the Chinese Academy of Sciences, Beijing 100093, China; Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany,the Chinese Academy of Sciences, Beijing 100093, China
• Subjects: cold stress; Oryza sativa; proteome; super high-yield hybrid rice; Oryza sativa; cold stress; super high-yield hybrid rice; proteome
• ISSN: 1672-9072; 1744-7909
• DOI: 10.1111/j.1744-7909.2006.00319.x

Liangyoupeijiu is a super high‐yield hybrid rice. Despite its advantages with respect to yield and grain quality, it is sensitive to cold, which keeps it from being widely cultivated. We subjected Liangyoupeijiu seedlings to 4°C cold treatment, then extracted the leaf proteins. After 2‐D gel electrophoresis separation and matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry analysis, a series of differentially displayed proteins were identified. Some metabolism‐associated proteins were found among the downregulated proteins, such as carbamoyl phosphate synthetase, transketolase 1, dihydrolipoamide dehydrogenase and glyceraldehyde 3‐phosphate dehydrogenase. The upregulated proteins included both stress‐resistance proteins such as nucleoside diphosphate kinase I and proteins that are negative for rice growth, such as FtsH‐like protein, plastid fusion and/or translocation factor (Pftf) and actin. Our results indicate that cold may inhibit Liangyoupeijiu growth through decreasing metabolic activity and damaging cell structure. (Managing editor: Li‐Hui Zhao)