Seeds are the economic basis of oilseed crops, especially soybeans, the most widely cultivated oilseed crop worldwide. Seed development is accompanied by a multitude of diverse cellular processes, and revealing the underlying regulatory activities is critical for seed improvement. In this study, we profiled the transcriptomes of developing seeds at 20, 25, 30, and 40 days after flowering (DAF), as these stages represent critical time points of seed development from early to full development. We identified a set of highly abundant genes and highlighted the importance of these genes in supporting nutrient accumulation and transcriptional regulation for seed development. We identified 8925 differentially expressed genes (DEGs) that exhibited temporal expression patterns over the course and expression specificities in distinct tissues, including seeds and nonseed tissues (roots, stems, and leaves). Genes specific to nonseed tissues might have tissue-associated roles, with relatively low transcript abundance in developing seeds, suggesting their spatially supportive roles in seed development. Coexpression network analysis identified several underexplored genes in soybeans that bridge tissue-specific gene modules. Our study provides a global view of gene activities and biological processes critical for seed formation in soybeans and prioritizes a set of genes for further study. The results of this study help to elucidate the mechanism controlling seed development and storage reserves.
Transcriptome profiling reveals the spatial-temporal dynamics of gene expression essential for soybean seed development
Hengyou Zhang,Zhenbin Hu,Yuming Yang,Xiaoqian Liu,H. Lv,Bao‐Hua Song,Y. An,Zhimin Li,Dan Zhang
Published 2021 in BMC Genomics
ABSTRACT
PUBLICATION RECORD
- Publication year
2021
- Venue
BMC Genomics
- Publication date
2021-06-16
- Fields of study
Biology, Agricultural and Food Sciences, Medicine, Environmental Science
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- 20, 25, 30, and 40 daf
The four developing seed time points sampled at 20, 25, 30, and 40 days after flowering.
Aliases: 20 DAF, 25 DAF, 30 DAF, 40 DAF, days after flowering
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - coexpression network analysis
A network-based analysis that groups genes by shared expression behavior across samples.
Aliases: gene coexpression network analysis, WGCNA-like analysis
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - developing soybean seeds
Soybean seed tissues collected during development for transcriptome measurement.
Aliases: soybean seeds, seed samples
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - differentially expressed genes
Genes whose expression levels change significantly across the sampled seed stages or tissues.
Aliases: DEGs
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - gene prioritization
The process of ranking candidate genes for follow-up investigation based on the analysis results.
Aliases: candidate prioritization
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - highly abundant genes
Genes with the strongest transcript abundance among the genes detected in the sampled seed developmental stages.
Aliases: abundant genes
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - nonseed tissues
Soybean tissues outside the seed, including roots, stems, and leaves, used for comparison with developing seeds.
Aliases: root, stem, and leaf tissues, roots stems and leaves
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - nutrient accumulation
The build-up of storage-related nutrients during seed maturation.
Aliases: storage reserve accumulation
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - seed development
The developmental program that transforms a fertilized soybean seed into a mature seed.
Aliases: seed formation
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - temporal expression patterns
Expression trajectories that vary across the ordered developmental time points.
Aliases: time-course patterns
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - tissue-specific expression patterns
Expression differences that distinguish seeds from nonseed tissues such as roots, stems, and leaves.
Aliases: tissue specificity
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - tissue-specific gene modules
Clusters of coexpressed genes associated with particular soybean tissues or tissue contexts.
Aliases: gene modules
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - transcriptional regulation
Control of gene expression by regulatory factors acting at the transcription level.
Aliases: gene regulation
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - transcriptome profiling
Genome-wide measurement of RNA expression levels across the sampled soybean seed stages and tissues.
Aliases: RNA-seq profiling, expression profiling
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review - underexplored genes in soybeans
Soybean genes with limited prior functional characterization that were highlighted as candidates in the analysis.
Aliases: underexplored soybean genes
박진우 (dztg5apj7m) extractionKiller Whale (322360f1c1) reviewq (76h6bfydm6) reviewmexicorea (qjvnbu8xg3) review
REFERENCES
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