Affiliation:
1. State Key Laboratory of Agrobiotechnology and School of Life Science, The Chinese University of Hong Kong 1 , 999077 Hong Kong , China
2. Southern University of Science and Technology 2 Department of Biology , , Shenzhen 518055 , China
Abstract
ABSTRACT
The morphology of the flowering plant is established during early embryogenesis. In recent years, many studies have focused on transcriptional profiling in plant embryogenesis, but the dynamic landscape of the Arabidopsis thaliana proteome remains elusive. In this study, Arabidopsis embryos at 2/4-cell, 8-cell, 16-cell, 32-cell, globular and heart stages were collected for nanoproteomic analysis. In total, 5386 proteins were identified. Of these, 1051 proteins were universally identified in all developmental stages and a range of 27 to 2154 proteins was found to be stage specific. These proteins could be grouped into eight clusters according to their expression levels. Gene Ontology enrichment analysis showed that genes involved in ribosome biogenesis and auxin-activated signalling were enriched during early embryogenesis, indicating that active translation and auxin signalling are important events in Arabidopsis embryo development. Combining RNA-sequencing data with the proteomics analysis, the correlation between mRNA and protein was evaluated. An overall positive correlation was found between mRNA and protein. This work provides a comprehensive landscape of the Arabidopsis proteome in early embryogenesis. Some important proteins/transcription factors identified through network analysis may serve as potential targets for future investigation.
Funder
Shenzhen Municipal Science and Technology Innovation Council
State Key Laboratory of Agrobiotechnology
Chinese University of Hong Kong
Publisher
The Company of Biologists
Subject
Developmental Biology,Molecular Biology
Cited by
2 articles.
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