Transcriptome and differential gene expression analysis for nacRNAi and non-transgenic sibling
Ontology highlight
ABSTRACT:
ORGANISM(S): Zea mays
PROVIDER: GSE127525 | GEO | 2019/05/04
REPOSITORIES: GEO
Similar Datasets
Project description:Grain filling in maize (Zea mays L.) is intricately linked to cell development, involving the regulation of genes responsible for the biosynthesis of storage reserves (starch, proteins, and lipids) and phytohormones. However, the regulatory network coordinating these biological functions remains unclear. In this study, we identified 1,744 high-confidence target genes co-regulated by the transcription factors (TFs) ZmNAC128 and ZmNAC130 (ZmNAC128/130) through chromatin immunoprecipitation sequencing coupled with RNA-seq analysis in the zmnac128/130 loss-of-function mutants. We further constructed a hierarchical regulatory network using DNA affinity purification sequencing analysis of downstream TFs regulated by ZmNAC128/130. In addition to target genes involved in the biosynthesis of starch and zeins, we discovered novel target genes of ZmNAC128/130 involved in the biosynthesis of lipids and indole-3-acetic acid (IAA). Consistently, the number of oil bodies, as well as the contents of triacylglycerol and IAA were significantly reduced in zmnac128/130. The hierarchical regulatory network centered by ZmNAC128/130 revealed a significant overlap between the direct target genes of ZmNAC128/130 and their downstream TFs, particularly in regulating the biosynthesis of storage reserves and IAA. Our results indicated that the biosynthesis of storage reserves and IAA is coordinated by a multi-TFs hierarchical regulatory network in maize endosperm.
2024-06-21 | GSE262337 | GEO
Project description:Grain filling in maize (Zea mays L.) is intricately linked to cell development, involving the regulation of genes responsible for the biosynthesis of storage reserves (starch, proteins, and lipids) and phytohormones. However, the regulatory network coordinating these biological functions remains unclear. In this study, we identified 1,744 high-confidence target genes co-regulated by the transcription factors (TFs) ZmNAC128 and ZmNAC130 (ZmNAC128/130) through chromatin immunoprecipitation sequencing coupled with RNA-seq analysis in the zmnac128/130 loss-of-function mutants. We further constructed a hierarchical regulatory network using DNA affinity purification sequencing analysis of downstream TFs regulated by ZmNAC128/130. In addition to target genes involved in the biosynthesis of starch and zeins, we discovered novel target genes of ZmNAC128/130 involved in the biosynthesis of lipids and indole-3-acetic acid (IAA). Consistently, the number of oil bodies, as well as the contents of triacylglycerol and IAA were significantly reduced in zmnac128/130. The hierarchical regulatory network centered by ZmNAC128/130 revealed a significant overlap between the direct target genes of ZmNAC128/130 and their downstream TFs, particularly in regulating the biosynthesis of storage reserves and IAA. Our results indicated that the biosynthesis of storage reserves and IAA is coordinated by a multi-TFs hierarchical regulatory network in maize endosperm.
2024-06-21 | GSE262336 | GEO
Project description:Grain filling in maize (Zea mays L.) is intricately linked to cell development, involving the regulation of genes responsible for the biosynthesis of storage reserves (starch, proteins, and lipids) and phytohormones. However, the regulatory network coordinating these biological functions remains unclear. In this study, we identified 1,744 high-confidence target genes co-regulated by the transcription factors (TFs) ZmNAC128 and ZmNAC130 (ZmNAC128/130) through chromatin immunoprecipitation sequencing coupled with RNA-seq analysis in the zmnac128/130 loss-of-function mutants. We further constructed a hierarchical regulatory network using DNA affinity purification sequencing analysis of downstream TFs regulated by ZmNAC128/130. In addition to target genes involved in the biosynthesis of starch and zeins, we discovered novel target genes of ZmNAC128/130 involved in the biosynthesis of lipids and indole-3-acetic acid (IAA). Consistently, the number of oil bodies, as well as the contents of triacylglycerol and IAA were significantly reduced in zmnac128/130. The hierarchical regulatory network centered by ZmNAC128/130 revealed a significant overlap between the direct target genes of ZmNAC128/130 and their downstream TFs, particularly in regulating the biosynthesis of storage reserves and IAA. Our results indicated that the biosynthesis of storage reserves and IAA is coordinated by a multi-TFs hierarchical regulatory network in maize endosperm.
2024-06-21 | GSE262335 | GEO
Project description:The cereal endosperm consists of starchy endosperm (ST) cells, which accumulate storage proteins and starch, the peripheral aleurone (AL) cells, which mobilize these storage compounds during germination, and transfer cells in contact with the maternal vascular tissues, and the embryo-surrounding region. We conducted RNA-sequencing and analyzed transcript profiles of AL and ST tissues at 18 and 22 days after pollination (DAP), when storage compounds such as proteins, starch, triacylglycerols, specialized metabolites, and minerals are actively synthesized in the maize endosperm. We combined published RNA-seq datasets from other kernel tissues at different developmental stages to analyze gene expression connected to synthesis and accumulation of storage compounds and metabolites. Using weighted correlation network analysis (WGCNA), we identified gene modules associated with metabolic pathways related to nutritional properties of the maize endosperm. We also provide information of novel marker genes specifically expressed in AL and ST, at either early or late developmental stages. This study is important for understanding maize endosperm development and for developing strategies to improve nutritional quality of maize kernels.
2017-05-02 | GSE95678 | GEO
Project description:TO explore the transcriptional role of ZmNAC128 and ZmNAC130 and to explore core genes in their regulatory network combined with previous transcriptomes
2024-01-10 | GSE252297 | GEO
Project description:Starch synthesis is an essential feature for crops, but its regulatory mechanism has been largely restricted to transcription factors. Starch synthesis parallels the endosperm development in maize. we obtained transcriptome, small RNAome and DNA methylome data from the multiple developing stages of endosperms, as well as kernel and leaf, via applying RNA-seq, sRNA-seq and BS-seq technologies. We demonstrated that genome-wide gene expression makes a sharp transition at the point when starch accumulation speeds between DAP 10-13, while the enriched up-regulation of starch and sucrose metabolism genes occurs earlier at DAP 9-10. Expression pattern analysis establishes a comprehensive network between starch synthesis genes and transcription factors. MiRNAs negatively regulating TF expression were extensively downregulated during maize endosperm development. We showed that TF ZmMYB33 and ZmMYB65 promotes the transcription of the GUS reporter under the control of Wx and Sbe2b/Bt2 gene promoters containing their binding motifs, respectively. We further showed that the abundantly expressed miR159k-3p negatively regulate the expression of these two transcription factors, suggesting that miRNAs are important regulators of starch synthesis. In addition, we showed that both starch synthesis genes and miRNAs are globally repressed by DNA methylation, while transcription factors are not. Taken together, the presented results establish the regulatory functions of miRNAs and DNA methylation in starch synthesis, and indicates DNA methylation as the master switch.
2020-11-04 | GSE106684 | GEO
Project description:Starch synthesis is an essential feature for crops, but its regulatory mechanism has been largely restricted to transcription factors. Starch synthesis parallels the endosperm development in maize. we obtained transcriptome, small RNAome and DNA methylome data from the multiple developing stages of endosperms, as well as kernel and leaf, via applying RNA-seq, sRNA-seq and BS-seq technologies. We demonstrated that genome-wide gene expression makes a sharp transition at the point when starch accumulation speeds between DAP 10-13, while the enriched up-regulation of starch and sucrose metabolism genes occurs earlier at DAP 9-10. Expression pattern analysis establishes a comprehensive network between starch synthesis genes and transcription factors. MiRNAs negatively regulating TF expression were extensively downregulated during maize endosperm development. We showed that TF ZmMYB33 and ZmMYB65 promotes the transcription of the GUS reporter under the control of Wx and Sbe2b/Bt2 gene promoters containing their binding motifs, respectively. We further showed that the abundantly expressed miR159k-3p negatively regulate the expression of these two transcription factors, suggesting that miRNAs are important regulators of starch synthesis. In addition, we showed that both starch synthesis genes and miRNAs are globally repressed by DNA methylation, while transcription factors are not. Taken together, the presented results establish the regulatory functions of miRNAs and DNA methylation in starch synthesis, and indicates DNA methylation as the master switch.
2020-11-04 | GSE106627 | GEO
Project description:Starch synthesis is an essential feature for crops, but its regulatory mechanism has been largely restricted to transcription factors. Starch synthesis parallels the endosperm development in maize. we obtained transcriptome, small RNAome and DNA methylome data from the multiple developing stages of endosperms, as well as kernel and leaf, via applying RNA-seq, sRNA-seq and BS-seq technologies. We demonstrated that genome-wide gene expression makes a sharp transition at the point when starch accumulation speeds between DAP 10-13, while the enriched up-regulation of starch and sucrose metabolism genes occurs earlier at DAP 9-10. Expression pattern analysis establishes a comprehensive network between starch synthesis genes and transcription factors. MiRNAs negatively regulating TF expression were extensively downregulated during maize endosperm development. We showed that TF ZmMYB33 and ZmMYB65 promotes the transcription of the GUS reporter under the control of Wx and Sbe2b/Bt2 gene promoters containing their binding motifs, respectively. We further showed that the abundantly expressed miR159k-3p negatively regulate the expression of these two transcription factors, suggesting that miRNAs are important regulators of starch synthesis. In addition, we showed that both starch synthesis genes and miRNAs are globally repressed by DNA methylation, while transcription factors are not. Taken together, the presented results establish the regulatory functions of miRNAs and DNA methylation in starch synthesis, and indicates DNA methylation as the master switch.
2020-11-04 | GSE106642 | GEO
Project description:Maize plants were transformed with endosperm-specific PPDK RNAi knockout constructs to alter starch/protein ratios. Metabolite pool comparisons will be examined from sibling kernels harvested from segregating ears.
2015-08-17 | ST000289 | MetabolomicsWorkbench
Project description:The endosperm of cereal grains feeds the entire world as major food supply, however little is known for its defense responses during endosperm development. Inducer of CBF Expression 1 (ICE1) is a known regulator of cold tolerance in plants. ICE1 has a monocot-specific homologue that is preferentially expressed in cereal grains but with an unclear regulatory function. Here, we characterized the function of monocot-specific ZmICE1 (ZmICE1a) in maize (Zea mays) kernel. mRNA in situ hybridization (ISH) revealed that ZmICE1a is predominantly expressed in the peripheral endosperm (AL, SAL, and BETL). Loss-of-function of ZmICE1a reduced starch content and kernel weight. RNA-seq analysis revealed contradicted expression patterns between starch synthesis genes and genes involved in defense and phytohormone synthesis in zmice1a developing endosperm. Coupled with CUT&Tag-seq analysis, we found that ZmICE1a positively regulates genes in starch synthesis, while negatively regulates genes in AL-specific defense and the synthesis of IAA and JA. Explant assays revealed that exogenous IAA or JA induces the expression of numerous defense genes. mRNA ISH assays revealed that the defense genes induced by IAA and JA, exhibit distinct spatial specific expression in BETL and SAL, respectively. Moreover, we dissected a JA-ZmJAZ9-ZmICE1a-MPI signaling axis involved in JA-mediated defense regulation. Overall, our study revealed ZmICE1a as a key regulatory for endosperm defense responses, and coordinates defense-storage tradeoffs during endosperm development.
2024-09-19 | GSE254177 | GEO