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Proteomics analysis reveals the molecular mechanism underlying the transition from primary to secondary growth of poplar.

Identifieur interne : 001233 ( Main/Exploration ); précédent : 001232; suivant : 001234

Proteomics analysis reveals the molecular mechanism underlying the transition from primary to secondary growth of poplar.

Auteurs : Yuan Li [République populaire de Chine] ; Feng Jin [République populaire de Chine] ; Qing Chao [République populaire de Chine] ; Bai-Chen Wang [République populaire de Chine]

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RBID : pubmed:28284108

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English descriptors

Abstract

Wood is the most important natural source of energy and also provides fuel and fiber. Considering the significant role of wood, it is critical to understand how wood is formed. Integration of knowledge about wood development at the cellular and molecular levels will allow more comprehensive understanding of this complex process. In the present study, we used a comparative proteomic approach to investigate the differences in protein profiles between primary and secondary growth in young poplar stems using tandem mass tag (TMT)-labeling. More than 10,816 proteins were identified, and, among these, 3106 proteins were differentially expressed during primary to secondary growth. Proteomic data were validated using a combination of histochemical staining, enzyme activity assays, and quantitative real-time PCR. Bioinformatics analysis revealed that these differentially expressed proteins are related to various metabolic pathways, mainly including signaling, phytohormones, cell cycle, cell wall, secondary metabolism, carbohydrate and energy metabolism, and protein metabolism as well as redox and stress pathways. This large proteomics dataset will be valuable for uncovering the molecular changes occurring during the transition from primary to secondary growth. Further, it provides new and accurate information for tree breeding to modify wood properties.

DOI: 10.1016/j.jplph.2017.02.009
PubMed: 28284108


Affiliations:


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