Temporal patterns of gene expression associated with tuberous root formation and development in sweetpotato (Ipomoea batatas)
Open accessAbstract
BACKGROUND: The tuberous root of sweetpotato is undisputedly an important organ from agronomic and biological perspectives. Little is known regarding the regulatory networks programming tuberous root formation and development. RESULTS: Here, as a first step toward understanding these networks, we analyzed and characterized the genome-wide transcriptional profiling and dynamics of sweetpotato root in seven distinct developmental stages using a customized microarray containing 39,724 genes. Analysis of these genes identified temporal programs of gene expression, including hundreds of transcription factor (TF) genes. We found that most genes active in roots were shared across all developmental stages, although significant quantitative changes in gene abundance were observed for 5,368 (including 435 TFs) genes. Clustering analysis of these differentially expressed genes pointed out six distinct expression patterns during root development. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis revealed that genes involved in different processes were enriched at specific stages of root development. In contrast with the large number of shared expressed genes in root development, each stage or period of root development has only a small number of specific genes. In total, 712 (including 27 TFs) and 1,840 (including 115 TFs) genes were identified as root-stage and root-period specific, respectively at the level of microarray. Several of the specific TF genes are known regulators of root development, including DA1-related protein, SHORT-ROOT and BEL1-like. The remaining TFs with unknown roles would also play critical regulatory roles during sweetpotato tuberous root formation and development. CONCLUSIONS: The results generated in this study provided spatiotemporal patterns of root gene expression in support of future efforts for understanding the underlying molecular mechanism that control sweetpotato yield and quality.
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Previous RNA-Seq data have revealed that three homeobox genes are notably upregulated during the formation and thickening of storage roots.
“Previous RNA-Seq data have revealed that three homeobox genes are notably upregulated during the formation and thickening of storage roots [37].”
From RNA-Seq and iTRAQ reveal multiple pathways involved in storage root formation and development in sweet potato (Ipomoea batatas L.) (2019) · cites this paper as [37]
The Results sections on specific and shared genes identify homeodomain or homeobox-related genes during sweetpotato root development, including genes associated with later stages and an increasing expression cluster (page not provided). They do not establish that exactly three homeobox genes were notably upregulated during formation and thickening. The Methods section on hybridization and data extraction identifies the expression experiment as a microarray, not RNA-Seq. (LLM, conf=0.86)
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References 53 · Cited by 42
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- Authors
- Wang, Z., Fang, B., Chen, X., Liao, M., Chen, J., Zhang, X., Huang, L., Luo, Z., Yao, Z., & Li, Y.
- Affiliations
- Guangdong Academy of Agricultural Sciences (CN)
- Corresponding author
- Fang, Boping
- Venue
- BMC Plant Biology
- Published
- 2015-07-16
- Volume
- 15
- Issue
- 1
- Pages
- 180-180
- ISSN
- 1471-2229 (ISSN-L)
- PMC
- PMC4502468
- OpenAlex
- W1508958840
- Cited by
- 42
- References
- 53
- Citations by year
- 2026: 1 · 2025: 3 · 2024: 8 · 2023: 5 · 2022: 3 · 2021: 4 · 2020: 4 · 2019: 5 · 2018: 3 · 2017: 3 · 2016: 3
- FWCI
- 3.63
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- BMC Plant Biology (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- Pearl River Science and Technology Nova of Guangzhou (2012J2200067)
- earmarked fund for Modern Agro-industry Technology Research System (nycytx-16-B-5)
- National Natural Science Foundation of China (31000737)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Parasitism and Resistance
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant nutrient uptake and metabolism
- Keywords
- Ipomoea batatas, root development, temporal gene expression, transcription factors, differentially expressed genes, SHORT-ROOT, gene regulatory networks
- MeSH terms
- Gene Expression Regulation, Plant, Gene Expression Regulation, Developmental, Plant Roots, Oligonucleotide Array Sequence Analysis, Ipomoea batatas, Transcriptome
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