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Yi Y, Zhang J, Guo S, Du X, Gu R, Wang J, Chen Q. Multi-Omics Analysis Reveals Differential Molecular Responses of RNA Polymerase Common Subunit ZmRPABC5b for Seedling Development in Maize. PLANTS (BASEL, SWITZERLAND) 2025; 14:941. [PMID: 40265882 PMCID: PMC11944614 DOI: 10.3390/plants14060941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2025] [Revised: 03/13/2025] [Accepted: 03/13/2025] [Indexed: 04/24/2025]
Abstract
The normal development of maize (Zea mays) seedling is a prerequisite for achieving high crop yields. Although numerous molecular pathways regulate seedling development, the role of RNA polymerases (RNAPs) in this process remains largely unclear, and the function of common RNAP subunits in plants are not well understood. Here, we characterized the loss-of-function mutant of common subunit ZmRPABC5b, defective kernel 701 (dek701), which displays delayed seedling development. To elucidate the role of ZmRPABC5b in maize seedling growth, we conducted transcriptomic and metabolomic analyses. This study found that the loss of ZmRPABC5b function severely impaired early seedling growth, leading to significant reductions in stem length, root length, as well as fresh and dry weight. Transcriptome analysis identified 3780 upregulated and 4385 downregulated differentially expressed genes (DEGs) in dek701 seedlings compared to wild type. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses of DEGs revealed that significant enrichment in pathways related to RNA biosynthesis, carbohydrate metabolic, hormone stimulus, cellular transporter and ribosome activity. Metabolome analysis identified 501 differentially expressed metabolites (DEMs) in dek701 seedlings, which were significantly enriched in the amino acid metabolism, secondary metabolites, carbohydrate metabolism, lipid metabolism, transport and translation. These findings provide substantial insight into the ZmRPABC5b regulatory network, positioning it as a central hub for regulating seedling development in maize.
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Affiliation(s)
- Yaoran Yi
- Sanya Institute of China Agricultural University, Sanya 572025, China;
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Frontiers Science Center for Molecular Design Breeding (MOE), Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; (J.Z.); (S.G.); (X.D.); (R.G.)
| | - Jie Zhang
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Frontiers Science Center for Molecular Design Breeding (MOE), Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; (J.Z.); (S.G.); (X.D.); (R.G.)
| | - Shuangqi Guo
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Frontiers Science Center for Molecular Design Breeding (MOE), Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; (J.Z.); (S.G.); (X.D.); (R.G.)
| | - Xuemei Du
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Frontiers Science Center for Molecular Design Breeding (MOE), Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; (J.Z.); (S.G.); (X.D.); (R.G.)
| | - Riliang Gu
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Frontiers Science Center for Molecular Design Breeding (MOE), Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; (J.Z.); (S.G.); (X.D.); (R.G.)
| | - Jianhua Wang
- Sanya Institute of China Agricultural University, Sanya 572025, China;
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Frontiers Science Center for Molecular Design Breeding (MOE), Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; (J.Z.); (S.G.); (X.D.); (R.G.)
| | - Quanquan Chen
- Sanya Institute of China Agricultural University, Sanya 572025, China;
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Frontiers Science Center for Molecular Design Breeding (MOE), Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; (J.Z.); (S.G.); (X.D.); (R.G.)
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Kudoyarova G. Special Issue "Phytohormones: Important Participators in Plant Growth and Development". Int J Mol Sci 2024; 25:1380. [PMID: 38338660 PMCID: PMC10855094 DOI: 10.3390/ijms25031380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 01/22/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024] Open
Abstract
The articles published in the IJMS Special Issue "Phytohormones" are devoted to various aspects of hormonal control of plant growth and development promoting adaptation to normal and stress conditions [...].
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Affiliation(s)
- Guzel Kudoyarova
- Ufa Institute of Biology, Ufa Federal Research Centre of the Russian Academy of Sciences, Pr. Octyabrya, 69, 450054 Ufa, Russia
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Huang Y, Li Y, Zou K, Wang Y, Ma Y, Meng D, Luo H, Qu J, Li F, Xuan Y, Du W. The Resistance of Maize to Ustilago maydis Infection Is Correlated with the Degree of Methyl Esterification of Pectin in the Cell Wall. Int J Mol Sci 2023; 24:14737. [PMID: 37834187 PMCID: PMC10573042 DOI: 10.3390/ijms241914737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/21/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Common smut caused by Ustilago maydis is one of the dominant fungal diseases in plants. The resistance mechanism to U. maydis infection involving alterations in the cell wall is poorly studied. In this study, the resistant single segment substitution line (SSSL) R445 and its susceptible recurrent parent line Ye478 of maize were infected with U. maydis, and the changes in cell wall components and structure were studied at 0, 2, 4, 8, and 12 days postinfection. In R445 and Ye478, the contents of cellulose, hemicellulose, pectin, and lignin increased by varying degrees, and pectin methylesterase (PME) activity increased. The changes in hemicellulose and pectin in the cell wall after U. maydis infection were analyzed via immunolabeling using monoclonal antibodies against hemicellulsic xylans and high/low-methylated pectin. U. maydis infection altered methyl esterification of pectin, and the degree of methyl esterification was correlated with the resistance of maize to U. maydis. Furthermore, the relationship between methyl esterification of pectin and host resistance was validated using 15 maize inbred lines with different resistance levels. The results revealed that cell wall components, particularly pectin, were important factors affecting the colonization and propagation of U. maydis in maize, and methyl esterification of pectin played a role in the resistance of maize to U. maydis infection.
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Affiliation(s)
- Yingni Huang
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Yang Li
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Kunkun Zou
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Yang Wang
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuting Ma
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Dexuan Meng
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Haishan Luo
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Jianzhou Qu
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Fengcheng Li
- Rice Research Institute, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuanhu Xuan
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Wanli Du
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
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