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Integration of rhythmic metabolome and transcriptome provides insights into the transmission of rhythmic fluctuations and temporal diversity of metabolism in rice

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Science China(Life Sciences) 2022年第9期65卷 1794-1810页

作者： Junjie Zhou Chengyuan Liu Qiyu Chen Ling Liu Shuying Niu Ridong Chen Kang Li Yangyang Sun Yuheng Shi Chenkun Yang Shuangqian Shen Yufei Li Junwei Xing Honglun Yuan Xianqing Liu Chuanying Fang Alisdair R.Fernie Jie Luo College of Tropical Crops Hainan UniversityHaikou 570288China National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research(Wuhan) Huazhong Agricultural UniversityWuhan 430070China Sanya Nanfan Research Institute of Hainan University Hainan Yazhou Bay Seed LaboratorySanya 572025China Max-Planck-Institute of Molecular Plant Physiology Potsdam-Golm 144776Germany Center of Plant System Biology and Biotechnology Plovdiv 4000Bulgaria

Various aspects of the organisms adapt to cyclically changing environmental conditions via transcriptional ***,the role of rhythmicity in altering the global aspects of metabolism is poorly ***,we subjected four rice(Oryza sativa)varieties to a range of metabolic profiles and RNA-seq to investigate the temporal relationships of rhythm between transcription and *** than 40%of the rhythmic genes and a quarter of metabolites conservatively oscillated across four rice *** with the metabolome,the transcriptome was more strongly regulated by rhythm;however,the rhythm of metabolites had an obvious opposite trend between day and *** association analysis,the time delay of rhythmic transmission from the transcript to the metabolite level was~4 h under long-day conditions,although the transmission was nearly synchronous for carbohydrate and nucleotide *** rhythmic accumulation of metabolites maintained highly coordinated temporal relationships in the metabolic network,whereas the correlation of some rhythmic metabolites,such as branched-chain amino acids(BCAAs),was significantly different *** further demonstrated that the cumulative diversity of BCAAs was due to the differential expression of branched-chain aminotransferase 2 at *** research reveals the flexible pattern of rice metabolic rhythm existing with conservation and diversity.

关键词： Oryza sativa diurnal cycle metabolome time delay rhythmic diversity

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