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Comprehensive investigation of tobacco leaves during natural early senescence via multi-platform metabolomics analyses
Li, Lili1,2; Zhao, Jieyu1,2; Zhao, Yanni1,2; Lu, Xin1,2; Zhou, Zhihui1,2; Zhao, Chunxia1,2; Xu, Guowang1,2
刊名SCIENTIFIC REPORTS
2016-11-29
DOI10.1038/srep37976
6
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Multidisciplinary Sciences
关键词[WOS]LEAF SENESCENCE ; NICOTIANA-TABACUM ; MASS-SPECTROMETRY ; TRANSGENIC TOBACCO ; ARABIDOPSIS ; PLANTS ; STRESS ; BIOSYNTHESIS ; METABOLISM ; STEROLS
英文摘要Senescence is the final stage of leaf growth and development. Many different physiological activities occur during this process. A comprehensive metabolomics analysis of tobacco middle leaves at 5 different developmental stages was implemented through multi-platform methods based on liquid chromatography, capillary electrophoresis and gas chromatography coupled with mass spectrometry. In total, 412 metabolites were identified, including pigments, sterols, lipids, amino acids, polyamines, sugars and secondary metabolites. Dramatic metabolic changes were observed. Firstly, membrane degradation and chlorophyll down-regulation occurred after the 50% flower bud stage. Levels of major membrane lipids decreased, including those of the glycolipids in chloroplast thylakoids and phospholipids in membrane envelopes. Clear decreases in free sterols and acylated sterol glucosides were detected along with the accumulation of sterol esters. The accumulation of alkaloids was found. The amino acid levels were significantly decreased, particularly those of N-rich amino acids (glutamine and asparagine), thus reflecting N translocation. Subsequently, the antioxidant system was activated. Sugar alcohols and polyphenols accumulated when the lower leaves turned yellow. These results comprehensively revealed the metabolic changes that occur during tobacco leaf development and senescence under natural conditions.
语种英语
WOS记录号WOS:000388662600004
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/150357
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Li, Lili,Zhao, Jieyu,Zhao, Yanni,et al. Comprehensive investigation of tobacco leaves during natural early senescence via multi-platform metabolomics analyses[J]. SCIENTIFIC REPORTS,2016,6.
APA Li, Lili.,Zhao, Jieyu.,Zhao, Yanni.,Lu, Xin.,Zhou, Zhihui.,...&Xu, Guowang.(2016).Comprehensive investigation of tobacco leaves during natural early senescence via multi-platform metabolomics analyses.SCIENTIFIC REPORTS,6.
MLA Li, Lili,et al."Comprehensive investigation of tobacco leaves during natural early senescence via multi-platform metabolomics analyses".SCIENTIFIC REPORTS 6(2016).
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