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Wang B, Pang Q, Zhou Y, Yang J, Sadeghnezhad E, Cheng Y, Zhou S, Jia H. Receptor-like kinase ERECTA negatively regulates anthocyanin accumulation in grape. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 346:112172. [PMID: 38942388 DOI: 10.1016/j.plantsci.2024.112172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Accepted: 06/25/2024] [Indexed: 06/30/2024]
Abstract
Receptor-like kinase (ERECTA, ER) is essential for mediating growth, development, and stress response signaling pathway in plants. In this study, we investigated the effect of VvER on anthocyanin synthesis as a regulatory factor in transgenic grape callus in response to chilling stress. Results showed that overexpression of VvER reduced the expression of transcription factors VvMYBA1, VvMYB5b, VvMYC2, and VvWDR1, as well as the structural genes VvCHS, VvCHI, VvDFR, VvLDOX, and VvUFGT, and inhibited the anthocyanins synthesis of grape callus at 25℃. VvER reduced proline content and antioxidant enzymes activities of superoxide dismutase (SOD) and peroxidase (POD), and inhibited the expression of anthocyanin synthesis genes to reduce the cold resistance of grape callus. In transgenic Arabidopsis, overexpression of VvER promoted the elongation of Arabidopsis rosettes and sprigs. Under strong light treatment, VvER inhibited the accumulation of anthocyanins in Arabidopsis; Transient expression in strawberry fruit showed that VvER inhibited the synthesis of anthocyanin in strawberry fruit by inhibiting the expression of FaCHI, FaCHS, FaDFR and FaUFGT under low temperature treatment at 10°C, but not under the normal temperature of 25℃. Using Yeast two-hybrid, we found that VvER interacted with transcription factor proteins including VvMYBA1, VvMYB5b and VvWDR1. Furthermore, VvER led to the repression of VvUFGT promoter activity and decreased the anthocyanin biosynthesis genes expression by downregulation MBW complex activity. Totally, VvER could inhibit anthocyanin biosynthesis and involve in the grape plant susceptible to cold stress for grape cultivation in northern China.
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Affiliation(s)
- Bo Wang
- College of Agriculture, Guangxi University, No. 100, Daxue Road, Nanning, Guangxi 530004, China
| | - Qianqian Pang
- Key Laboratory of Genetics and Fruit Development, College of Horticulture, Nanjing Agricultural University, 1st Weigang Rd., Nanjing 210095, China
| | - Yunzhi Zhou
- College of Agriculture, Guangxi University, No. 100, Daxue Road, Nanning, Guangxi 530004, China
| | - Jungui Yang
- College of Agriculture, Guangxi University, No. 100, Daxue Road, Nanning, Guangxi 530004, China
| | | | - Yuanxin Cheng
- College of Agriculture, Guangxi University, No. 100, Daxue Road, Nanning, Guangxi 530004, China
| | - Sihong Zhou
- College of Agriculture, Guangxi University, No. 100, Daxue Road, Nanning, Guangxi 530004, China
| | - Haifeng Jia
- College of Agriculture, Guangxi University, No. 100, Daxue Road, Nanning, Guangxi 530004, China.
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2
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Zhao R, Wu WA, Huang YH, Li XK, Han JQ, Jiao W, Su YN, Zhao H, Zhou Y, Cao WQ, Zhang X, Wei W, Zhang WK, Song QX, He XJ, Ma B, Chen SY, Tao JJ, Yin CC, Zhang JS. An RRM domain protein SOE suppresses transgene silencing in rice. THE NEW PHYTOLOGIST 2024; 243:1724-1741. [PMID: 38509454 DOI: 10.1111/nph.19686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 03/01/2024] [Indexed: 03/22/2024]
Abstract
Gene expression is regulated at multiple levels, including RNA processing and DNA methylation/demethylation. How these regulations are controlled remains unclear. Here, through analysis of a suppressor for the OsEIN2 over-expressor, we identified an RNA recognition motif protein SUPPRESSOR OF EIN2 (SOE). SOE is localized in nuclear speckles and interacts with several components of the spliceosome. We find SOE associates with hundreds of targets and directly binds to a DNA glycosylase gene DNG701 pre-mRNA for efficient splicing and stabilization, allowing for subsequent DNG701-mediated DNA demethylation of the transgene promoter for proper gene expression. The V81M substitution in the suppressor mutant protein mSOE impaired its protein stability and binding activity to DNG701 pre-mRNA, leading to transgene silencing. SOE mutation enhances grain size and yield. Haplotype analysis in c. 3000 rice accessions reveals that the haplotype 1 (Hap 1) promoter is associated with high 1000-grain weight, and most of the japonica accessions, but not indica ones, have the Hap 1 elite allele. Our study discovers a novel mechanism for the regulation of gene expression and provides an elite allele for the promotion of yield potentials in rice.
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Affiliation(s)
- Rui Zhao
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wen-Ai Wu
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yi-Hua Huang
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xin-Kai Li
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jia-Qi Han
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wu Jiao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, 210095, Nanjing, China
| | - Yin-Na Su
- National Institute of Biological Sciences, Beijing, 102206, China
| | - He Zhao
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yang Zhou
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Wu-Qiang Cao
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xun Zhang
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Wei
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Wan-Ke Zhang
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Qing-Xin Song
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, 210095, Nanjing, China
| | - Xin-Jian He
- National Institute of Biological Sciences, Beijing, 102206, China
| | - Biao Ma
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Agriculture, South China Agricultural University, Guangzhou, 510642, China
| | - Shou-Yi Chen
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jian-Jun Tao
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Cui-Cui Yin
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jin-Song Zhang
- Key Lab of Seed Innovation, State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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Chen L, Liu Y, Li S, Ji Y, Sun F, Zou B. DICER-LIKE2 Plays a Crucial Role in Rice Stripe Virus Coat Protein-Mediated Virus Resistance in Arabidopsis. Viruses 2023; 15:2239. [PMID: 38005916 PMCID: PMC10675384 DOI: 10.3390/v15112239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/03/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
Virus coat protein (CP)-mediated resistance is considered an effective antiviral defense strategy that has been used to develop robust resistance to viral infection. Rice stripe virus (RSV) causes significant losses in rice production in eastern Asia. We previously showed that the overexpression of RSV CP in Arabidopsis plants results in immunity to RSV infection, using the RSV-Arabidopsis pathosystem, and this CP-mediated viral resistance depends on the function of DCLs and is mostly involved in RNA silencing. However, the special role of DCLs in producing t-siRNAs in CP transgenic Arabidopsis plants is not fully understood. In this study, we show that RSV CP transgenic Arabidopsis plants with the dcl2 mutant background exhibited similar virus susceptibility to non-transgenic plants and were accompanied by the absence of transgene-derived small interfering RNAs (t-siRNAs) from the CP region. The dcl2 mutation eliminated the accumulation of CP-derived t-siRNAs, including those generated by other DCL enzymes. In contrast, we also developed RSV CP transgenic Arabidopsis plants with the dcl4 mutant background, and these CP transgenic plants showed immunity to virus infection and accumulated comparable amounts of CP-derived t-siRNAs to CP transgenic Arabidopsis plants with the wild-type background except for a significant increase in the abundance of 22 nt t-siRNA reads. Overall, our data indicate that DCL2 plays an essential, as opposed to redundant, role in CP-derived t-siRNA production and induces virus resistance in RSV CP transgenic Arabidopsis plants.
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Affiliation(s)
- Li Chen
- The State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China;
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (Y.L.); (S.L.); (Y.J.)
| | - Yanan Liu
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (Y.L.); (S.L.); (Y.J.)
| | - Shuo Li
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (Y.L.); (S.L.); (Y.J.)
| | - Yinghua Ji
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (Y.L.); (S.L.); (Y.J.)
| | - Feng Sun
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (Y.L.); (S.L.); (Y.J.)
| | - Baohong Zou
- The State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China;
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Kanno T, Chiou P, Wu MT, Lin WD, Matzke A, Matzke M. A GFP splicing reporter in a coilin mutant background reveals links between alternative splicing, siRNAs, and coilin function in Arabidopsis thaliana. G3 (BETHESDA, MD.) 2023; 13:jkad175. [PMID: 37539868 PMCID: PMC10542627 DOI: 10.1093/g3journal/jkad175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 02/25/2023] [Accepted: 06/30/2023] [Indexed: 08/05/2023]
Abstract
Coilin is a scaffold protein essential for the structure of Cajal bodies, which are nucleolar-associated, nonmembranous organelles that coordinate the assembly of nuclear ribonucleoproteins (RNPs) including spliceosomal snRNPs. To study coilin function in plants, we conducted a genetic suppressor screen using a coilin (coi1) mutant in Arabidopsis thaliana and performed an immunoprecipitation-mass spectrometry analysis on coilin protein. The coi1 mutations modify alternative splicing of a GFP reporter gene, resulting in a hyper-GFP phenotype in young coi1 seedlings relative to the intermediate wild-type level. As shown here, this hyper-GFP phenotype is extinguished in older coi1 seedlings by posttranscriptional gene silencing triggered by siRNAs derived from aberrant splice variants of GFP pre-mRNA. In the coi1 suppressor screen, we identified suppressor mutations in WRAP53, a putative coilin-interacting protein; SMU2, a predicted splicing factor; and ZCH1, an incompletely characterized zinc finger protein. These suppressor mutations return the hyper-GFP fluorescence of young coi1 seedlings to the intermediate wild-type level. Additionally, coi1 zch1 mutants display more extensive GFP silencing and elevated levels of GFP siRNAs, suggesting the involvement of wild-type ZCH1 in siRNA biogenesis or stability. The immunoprecipitation-mass spectrometry analysis reinforced the roles of coilin in pre-mRNA splicing, nucleolar chromatin structure, and rRNA processing. The participation of coilin in these processes, at least some of which incorporate small RNAs, supports the hypothesis that coilin provides a chaperone for small RNA trafficking. Our study demonstrates the usefulness of the GFP splicing reporter for investigating alternative splicing, ribosome biogenesis, and siRNA-mediated silencing in the context of coilin function.
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Affiliation(s)
- Tatsuo Kanno
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 115201, Taiwan
| | - Phebe Chiou
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 115201, Taiwan
| | - Ming-Tsung Wu
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 115201, Taiwan
- Genenet Technology (UK) Limited, 128 City Road, London EC1V 2NX, UK
| | - Wen-Dar Lin
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 115201, Taiwan
| | - Antonius Matzke
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 115201, Taiwan
| | - Marjori Matzke
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 115201, Taiwan
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5
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Eckardt NA, Axtell MJ, Barta A, Chen X, Gregory BD, Guo H, Manavella PA, Mosher RA, Meyers BC. Focus on RNA biology. THE PLANT CELL 2023; 35:1617-1618. [PMID: 36943779 DOI: 10.1093/plcell/koad082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 03/13/2023] [Accepted: 03/13/2023] [Indexed: 05/30/2023]
Affiliation(s)
- Nancy A Eckardt
- Senior Features Editor, The Plant Cell, American Society of Plant Biologists, USA
| | - Michael J Axtell
- Reviewing Editor, The Plant Cell, American Society of Plant Biologists, USA
- Department of Biology, The Pennsylvania State University, University Park, PA 16802, USA
| | - Andrea Barta
- Reviewing Editor, The Plant Cell, American Society of Plant Biologists, USA
- Max Perutz Labs, Medical University of Vienna, Vienna Biocenter Campus, 1030 Vienna, Austria
| | - Xuemei Chen
- Senior Editor, The Plant Cell, American Society of Plant Biologists, USA
- Department of Botany and Plant Sciences and Center for Plant Cell Biology, Institute of Integrative Genome Biology, University of California-Riverside, Riverside, CA 92521, USA
| | - Brian D Gregory
- Reviewing Editor, The Plant Cell, American Society of Plant Biologists, USA
- Department of Biology, University of Pennsylvania, School of Arts and Sciences, Philadelphia, PA 19104, USA
| | - Hongwei Guo
- Reviewing Editor, The Plant Cell, American Society of Plant Biologists, USA
- Department of Biology, Institute of Plant and Food Science, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Pablo A Manavella
- Guest Editor, The Plant Cell, American Society of Plant Biologists, USA
- Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe 3000, Argentina
| | - Rebecca A Mosher
- Guest Editor, The Plant Cell, American Society of Plant Biologists, USA
- The School of Plant Sciences, The University of Arizona, Tucson, AZ 85721, USA
| | - Blake C Meyers
- Editor-in-Chief, The Plant Cell, American Society of Plant Biologists, USA
- Donald Danforth Plant Science Center, St. Louis, MO 63132, USA
- Division of Plant Sciences and Technology, University of Missouri-Columbia, Columbia, MO 65211, USA
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