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Zhang Y, Niu D, Yuan Y, Liu F, Wang Z, Gao L, Liu C, Zhou G, Gai S. PsSOC1 is involved in the gibberellin pathway to trigger cell proliferation and budburst during endodormancy release in tree peony. THE NEW PHYTOLOGIST 2024; 243:1017-1033. [PMID: 38877710 DOI: 10.1111/nph.19893] [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: 02/07/2024] [Accepted: 05/21/2024] [Indexed: 06/16/2024]
Abstract
Tree peony (Paeonia suffruticosa) undergoes bud endodormancy, and gibberellin (GA) pathway plays a crucial role in dormancy regulation. Recently, a key DELLA protein PsRGL1 has been identified as a negative regulator of bud dormancy release. However, the mechanism of GA signal to break bud dormancy remains unknown. In this study, yeast two-hybrid screened PsSOC1 interacting with PsRGL1 through its MADS domain, and interaction was identified using pull-down and luciferase complementation imaging assays Transformation in tree peony and hybrid poplar confirmed that PsSOC1 facilitated bud dormancy release. Transcriptome analysis of PsSOC1-overexpressed buds indicated PsCYCD3.3 and PsEBB3 were its potential downstream targets combining with promoter survey, and they also accelerated bud dormancy release verified by genetic analysis. Yeast one-hybrid, electrophoretic mobility shifts assays, chromatin immunoprecipitation quantitative PCR, and dual luciferase assays confirmed that PsSOC1 could directly bind to the CArG motif of PsCYCD3.3 and PsEBB3 promoters via its MADS domain. PsRGL1-PsSOC1 interaction inhibited the DNA-binding activity of PsSOC1. Additionally, PsCYCD3.3 promoted bud dormancy release by rebooting cell proliferation. These findings elucidated a novel GA pathway, GA-PsRGL1-PsSOC1-PsCYCDs, which expanded our understanding of the GA pathway in bud dormancy release.
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Affiliation(s)
- Yuxi Zhang
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
| | - Demei Niu
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
| | - Yanchao Yuan
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
| | - Fang Liu
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
| | - Zhiwei Wang
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
| | - Linqiang Gao
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
| | - Chunying Liu
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
| | - Gongke Zhou
- College of Landscape and Forestry, Qingdao Agricultural University, Qingdao, 266109, China
| | - Shupeng Gai
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
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Bayer EM, Benitez-Alfonso Y. Plasmodesmata: Channels Under Pressure. ANNUAL REVIEW OF PLANT BIOLOGY 2024; 75:291-317. [PMID: 38424063 DOI: 10.1146/annurev-arplant-070623-093110] [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] [Indexed: 03/02/2024]
Abstract
Multicellularity has emerged multiple times in evolution, enabling groups of cells to share a living space and reducing the burden of solitary tasks. While unicellular organisms exhibit individuality and independence, cooperation among cells in multicellular organisms brings specialization and flexibility. However, multicellularity also necessitates intercellular dependence and relies on intercellular communication. In plants, this communication is facilitated by plasmodesmata: intercellular bridges that allow the direct (cytoplasm-to-cytoplasm) transfer of information between cells. Plasmodesmata transport essential molecules that regulate plant growth, development, and stress responses. They are embedded in the extracellular matrix but exhibit flexibility, adapting intercellular flux to meet the plant's needs.In this review, we delve into the formation and functionality of plasmodesmata and examine the capacity of the plant communication network to respond to developmental and environmental cues. We illustrate how environmental pressure shapes cellular interactions and aids the plant in adapting its growth.
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Affiliation(s)
- Emmanuelle M Bayer
- Laboratoire de Biogenèse Membranaire (LBM), CNRS UMR5200, Université de Bordeaux, Villenave D'Ornon, France;
| | - Yoselin Benitez-Alfonso
- School of Biology, Centre for Plant Sciences, and Astbury Centre, University of Leeds, Leeds, United Kingdom;
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Mao Y, Yuan Y, Gao Y, Zeng L, Fan S, Luo J, Sun D. A tree peony RING-H2 finger protein, PsATL33, plays an essential role in cold-induced bud dormancy release by regulating gibberellin content. FRONTIERS IN PLANT SCIENCE 2024; 15:1395530. [PMID: 38887463 PMCID: PMC11180761 DOI: 10.3389/fpls.2024.1395530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 05/16/2024] [Indexed: 06/20/2024]
Abstract
Bud dormancy is crucial for woody perennial plants to resist low-temperature stress in winter. However, the molecular regulatory mechanisms underlying bud dormancy release are largely unclear. Here, a tree peony (Paeonia suffruticosa) transcript ARABIDOPSIS TOXICOS EN LEVADURA 33 (PsATL33), encoding a RING-H2 finger protein, was selected from previously generated RNA sequencing data of chilling-treated buds. The objective of this study is to investigate the role of PsATL33 in the regulation of cold-induced bud dormancy release. Subcellular localization assay revealed that PsATL33 was localized to the nucleus and plasma membrane. Reverse transcription-quantitative PCR analysis showed that PsATL33 was dramatically upregulated during cold-triggered bud dormancy release. Exogenous treatments with gibberellin (GA3) increased, but abscisic acid (ABA) inhibited the transcription of PsATL33. Ectopic transformation assay indicated that overexpression of PsATL33 in petunia promoted seed germination, plant growth, and axillary bud break. Silencing of PsATL33 in tree peony through virus-induced gene silencing assay delayed bud dormancy release. tobacco rattle virus (TRV)-PsATL33-infected buds exhibited reduced expression levels of dormancy break-related genes EARLY BUD-BREAK 1 (PsEBB1) and CARBOXYLESTERASE 15 (PsCXE15). Silencing of PsATL33 decreased the accumulation of bioactive GAs, GA1 and GA3, rather than ABA. Transcript levels of several genes involved in GA biosynthesis and signaling, including GA20-OXIDASE 1 (PsGA20ox1), GA3-OXIDASE 1 (PsGA3ox1), PsGA3ox3, GA2-OXIDASE 1 (PsGA2ox1), and GA-INSENSITIVE 1A (PsGAI1A), were changed by PsATL33 silencing. Taken together, our data suggest that PsATL33 functions as a positive regulator of cold-induced bud dormancy release by modulating GA production.
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Affiliation(s)
- Yanxiang Mao
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi, China
- National Engineering Technology Research Center for Oil Peony, Northwest A&F University, Yangling, Shaanxi, China
| | - Yanping Yuan
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi, China
- National Engineering Technology Research Center for Oil Peony, Northwest A&F University, Yangling, Shaanxi, China
| | - Yeshen Gao
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi, China
| | - Lingling Zeng
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi, China
| | - Siyu Fan
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi, China
- National Engineering Technology Research Center for Oil Peony, Northwest A&F University, Yangling, Shaanxi, China
| | - Jianrang Luo
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi, China
- National Engineering Technology Research Center for Oil Peony, Northwest A&F University, Yangling, Shaanxi, China
| | - Daoyang Sun
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi, China
- National Engineering Technology Research Center for Oil Peony, Northwest A&F University, Yangling, Shaanxi, China
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Yuan Y, Zeng L, Kong D, Mao Y, Xu Y, Wang M, Zhao Y, Jiang CZ, Zhang Y, Sun D. Abscisic acid-induced transcription factor PsMYB306 negatively regulates tree peony bud dormancy release. PLANT PHYSIOLOGY 2024; 194:2449-2471. [PMID: 38206196 PMCID: PMC10980420 DOI: 10.1093/plphys/kiae014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 11/08/2023] [Accepted: 12/02/2023] [Indexed: 01/12/2024]
Abstract
Bud dormancy is a crucial strategy for perennial plants to withstand adverse winter conditions. However, the regulatory mechanism of bud dormancy in tree peony (Paeonia suffruticosa) remains largely unknown. Here, we observed dramatically reduced and increased accumulation of abscisic acid (ABA) and bioactive gibberellins (GAs) GA1 and GA3, respectively, during bud endodormancy release of tree peony under prolonged chilling treatment. An Illumina RNA sequencing study was performed to identify potential genes involved in the bud endodormancy regulation in tree peony. Correlation matrix, principal component, and interaction network analyses identified a downregulated MYB transcription factor gene, PsMYB306, the expression of which positively correlated with 9-CIS-EPOXYCAROTENOID DIOXYGENASE 3 (PsNCED3) expression. Protein modeling analysis revealed 4 residues within the R2R3 domain of PsMYB306 to possess DNA binding capability. Transcription of PsMYB306 was increased by ABA treatment. Overexpression of PsMYB306 in petunia (Petunia hybrida) inhibited seed germination and plant growth, concomitant with elevated ABA and decreased GA contents. Silencing of PsMYB306 accelerated cold-triggered tree peony bud burst and influenced the production of ABA and GAs and the expression of their biosynthetic genes. ABA application reduced bud dormancy release and transcription of ENT-KAURENOIC ACID OXIDASE 1 (PsKAO1), GA20-OXIDASE 1 (PsGA20ox1), and GA3-OXIDASE 1 (PsGA3ox1) associated with GA biosynthesis in PsMYB306-silenced buds. In vivo and in vitro binding assays confirmed that PsMYB306 specifically transactivated the promoter of PsNCED3. Silencing of PsNCED3 also promoted bud break and growth. Altogether, our findings suggest that PsMYB306 negatively modulates cold-induced bud endodormancy release by regulating ABA production.
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Affiliation(s)
- Yanping Yuan
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Lingling Zeng
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Derong Kong
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yanxiang Mao
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yingru Xu
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Meiling Wang
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yike Zhao
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Cai-Zhong Jiang
- Department of Plant Sciences, University of California, Davis, Davis, CA 95616, USA
- Crops Pathology and Genetics Research Unit, USDA-ARS, Davis, CA 95616, USA
| | - Yanlong Zhang
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Daoyang Sun
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi 712100, China
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Gai W, Liu C, Yang M, Li F, Xin H, Gai S. Calcium signaling facilitates chilling- and GA- induced dormancy release in tree peony. FRONTIERS IN PLANT SCIENCE 2024; 15:1362804. [PMID: 38567129 PMCID: PMC10985203 DOI: 10.3389/fpls.2024.1362804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 02/29/2024] [Indexed: 04/04/2024]
Abstract
Calcium plays a crucial role in plant growth and development, yet little is known about its function in endodormancy regulation. Tree peony (Paeonia suffruticosa), characterized by compound buds and large flowers, is well-known for its ornamental and medicinal value. To break bud dormancy release is a prerequisite of flowering and forcing culture, particularly during the Spring Festival. In this study, the Ca2+ chelator EGTA and Ca2+ channel blocker LaCl3 were applied, resulting in a significant delay in budburst during both chilling- and gibberellin (GA)- induced dormancy release in a dosage-dependent manner. As expected, the retardation of bud break was recovered by the supplementation of 30 mM CaCl2, indicating a facilitating role of calcium in dormancy release. Accordingly, several calcium-sensor-encoding genes including Calmodulin (CaM) and Ca2+-dependent protein kinases (CDPKs) were significantly up-regulated by prolonged chilling and exogenous GAs. Ultrastructure observations revealed a decline in starch grains and the reopening of transport corridors following prolonged chilling. Calcium deposits were abundant in the cell walls and intercellular spaces at the early dormant stage but were enriched in the cytosol and nucleus before dormancy release. Additionally, several genes associated with dormancy release, including EBB1, EBB3, SVP, GA20ox, RGL1, BG6, and BG9, were differentially expressed after calcium blocking and recovery treatments, indicating that calcium might partially modulate dormancy release through GA and ABA pathways. Our findings provide novel insights into the mechanism of dormancy release and offer potential benefits for improving and perfecting forcing culture technology in tree peonies.
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Affiliation(s)
- Weiling Gai
- College of Agriculture, Qingdao Agricultural University, Qingdao, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
| | - Chunying Liu
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Mengjie Yang
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Feng Li
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
| | - Hua Xin
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Shupeng Gai
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China
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6
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Wang Q, Li B, Qiu Z, Lu Z, Hang Z, Wu F, Chen X, Zhu X. Genome-Wide Identification of MYC Transcription Factors and Their Potential Functions in the Growth and Development Regulation of Tree Peony ( Paeonia suffruticosa). PLANTS (BASEL, SWITZERLAND) 2024; 13:437. [PMID: 38337970 PMCID: PMC10857424 DOI: 10.3390/plants13030437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/25/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024]
Abstract
Tree peony (Paeonia suffruticosa Andr.) is a traditional Chinese flower with significant ornamental and medicinal value. Its growth and development process is regulated by some internal and external factors, and the related regulatory mechanism is largely unknown. Myelocytomatosis transcription factors (MYCs) play significant roles in various processes such as plant growth and development, the phytohormone response, and the stress response. As the identification and understanding of the MYC family in tree peony remains limited, this study aimed to address this gap by identifying a total of 15 PsMYCs in tree peony and categorizing them into six subgroups based on bioinformatics methods. Furthermore, the gene structure, conservative domains, cis-elements, and expression patterns of the PsMYCs were thoroughly analyzed to provide a comprehensive overview of their characteristics. An analysis in terms of gene structure and conserved motif composition suggested that each subtribe had similarities in function. An analysis of the promoter sequence revealed the presence of numerous cis-elements associated with plant growth and development, the hormone response, and the stress response. qRT-PCR results and the protein interaction network further demonstrated the potential functions of PsMYCs in the growth and development process. While in comparison to the control, only PsMYC2 exhibited a statistically significant variation in expression levels in response to exogenous hormone treatments and abiotic stress. A promoter activity analysis of PsMYC2 revealed its sensitivity to Flu and high temperatures, but exhibited no discernible difference under exogenous GA treatment. These findings help establish a basis for comprehending the molecular mechanism by which PsMYCs regulate the growth and development of tree peony.
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Affiliation(s)
| | | | | | | | | | | | - Xia Chen
- College of Jiyang, Zhejiang A&F University, Zhuji 311800, China; (Q.W.); (B.L.); (Z.Q.); (Z.L.); (Z.H.); (F.W.)
| | - Xiangtao Zhu
- College of Jiyang, Zhejiang A&F University, Zhuji 311800, China; (Q.W.); (B.L.); (Z.Q.); (Z.L.); (Z.H.); (F.W.)
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Huang X, Wu X, Sun G, Jiang Y, Yan H. Transcriptome Analysis Reveals Candidate Genes Involved in Gibberellin-Induced Fruit Development in Rosa roxburghii. PLANTS (BASEL, SWITZERLAND) 2023; 12:3425. [PMID: 37836165 PMCID: PMC10575181 DOI: 10.3390/plants12193425] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/22/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023]
Abstract
Gibberellins (GAs) play indispensable roles in the fruit development of horticultural plants. Unfortunately, the molecular basis behind GAs regulating fruit development in R. roxburghii remains obscure. Here, GA3 spraying to R. roxburghii 'Guinong 5' at full-bloom promoted fruit size and weight, prickle development, seed abortion, ascorbic acid accumulation, and reduction in total soluble sugar. RNA-Seq analysis was conducted to generate 45.75 Gb clean reads from GA3- and non-treated fruits at 120 days after pollination. We obtained 4275 unigenes belonging to differently expressed genes (DEGs). Gene ontology and the Kyoto Encyclopedia of Genes and Genomes displayed that carbon metabolism and oxidative phosphorylation were highly enriched. The increased critical genes of DEGs related to pentose phosphate, glycolysis/gluconeogenesis, and citrate cycle pathways might be essential for soluble sugar degradation. Analysis of DEGs implicated in ascorbate revealed the myoinositol pathway required to accumulate ascorbic acid. Finally, DEGs involved in endogenous phytohormones and transcription factors, including R2R3 MYB, bHLH, and WRKY, were determined. These findings indicated that GA3-trigged morphological alterations might be related to the primary metabolites, hormone signaling, and transcription factors, providing potential candidate genes that could be guided to enhance the fruit development of R. roxburghii in practical approaches.
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Affiliation(s)
- Xiaolong Huang
- School of Life Sciences, Guizhou Normal University, Guiyang 550001, China; (X.H.); (X.W.); (G.S.); (Y.J.)
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang 550001, China
- Laboratory of State Forestry Administration on Biodiversity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang 550001, China
| | - Xiaoai Wu
- School of Life Sciences, Guizhou Normal University, Guiyang 550001, China; (X.H.); (X.W.); (G.S.); (Y.J.)
| | - Guilian Sun
- School of Life Sciences, Guizhou Normal University, Guiyang 550001, China; (X.H.); (X.W.); (G.S.); (Y.J.)
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang 550001, China
- Laboratory of State Forestry Administration on Biodiversity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang 550001, China
| | - Yu Jiang
- School of Life Sciences, Guizhou Normal University, Guiyang 550001, China; (X.H.); (X.W.); (G.S.); (Y.J.)
| | - Huiqing Yan
- School of Life Sciences, Guizhou Normal University, Guiyang 550001, China; (X.H.); (X.W.); (G.S.); (Y.J.)
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Gao L, Niu D, Chi T, Yuan Y, Liu C, Gai S, Zhang Y. PsRGL1 negatively regulates chilling- and gibberellin-induced dormancy release by PsF-box1-mediated targeting for proteolytic degradation in tree peony. HORTICULTURE RESEARCH 2023; 10:uhad044. [PMID: 37786434 PMCID: PMC10541556 DOI: 10.1093/hr/uhad044] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 03/05/2023] [Indexed: 10/04/2023]
Abstract
Tree peony bud endodormancy is a common survival strategy similar to many perennial woody plants in winter, and the activation of the GA signaling pathway is the key to breaking endodormancy. GA signal transduction is involved in many physiological processes. Although the GA-GID1-DELLA regulatory module is conserved in many plants, it has a set of specific components that add complexity to the GA response mechanism. DELLA proteins are key switches in GA signaling. Therefore, there is an urgent need to identify the key DELLA proteins involved in tree peony bud dormancy release. In this study, the prolonged chilling increased the content of endogenously active gibberellins. PsRGL1 among three DELLA proteins was significantly downregulated during chilling- and exogenous GA3-induced bud dormancy release by cell-free degradation assay, and a high level of polyubiquitination was detected. Silencing PsRGL1 accelerated bud dormancy release by increasing the expression of the genes associated with dormancy release, including PsCYCD, PsEBB1, PsEBB3, PsBG6, and PsBG9. Three F-box protein family members responded to chilling and GA3 treatments, resulting in PsF-box1 induction. Yeast two-hybrid and BiFC assays indicated that only PsF-box1 could bind to PsRGL1, and the binding site was in the C-terminal domain. PsF-box1 overexpression promoted dormancy release and upregulated the expression of the dormancy-related genes. In addition, yeast two-hybrid and pull-down assays showed that PsF-box1 also interacted with PsSKP1 to form an E3 ubiquitin ligase. These findings enriched the molecular mechanism of the GA signaling pathway during dormancy release, and enhanced the understanding of tree peony bud endodormancy.
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Affiliation(s)
- Linqiang Gao
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao 266109, China
| | - Demei Niu
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao 266109, China
| | - Tianyu Chi
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao 266109, China
| | - Yanchao Yuan
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao 266109, China
| | - Chunying Liu
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao 266109, China
| | - Shupeng Gai
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao 266109, China
| | - Yuxi Zhang
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao 266109, China
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Zhang Y, Gao L, Wang Y, Niu D, Yuan Y, Liu C, Zhan X, Gai S. Dual functions of PsmiR172b-PsTOE3 module in dormancy release and flowering in tree peony ( Paeonia suffruticosa). HORTICULTURE RESEARCH 2023; 10:uhad033. [PMID: 37090095 PMCID: PMC10120838 DOI: 10.1093/hr/uhad033] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 02/14/2023] [Indexed: 05/03/2023]
Abstract
MicroRNAs (miRNAs) are non-coding RNAs that interact with target genes and are involved in many physiological processes in plants. miR172-AP2 mainly plays a role in the regulation of flowering time and floral organ differentiation. Bud dormancy release is necessary for forcing culture of tree peony in winter, but the mechanism of dormancy regulation is unclear. In this study, we found that a miR172 family member, PsmiR172b, was downregulated during chilling-induced bud dormancy release in tree peony, exhibiting a trend opposite to that of PsTOE3. RNA ligase-mediated (RLM) 5'-RACE (rapid amplification of cDNA ends) confirmed that miR172b targeted PsTOE3, and the cleavage site was between bases 12 (T) and 13 (C) within the complementary site to miR172b. The functions of miR172b and PsTOE3 were detected by virus-induced gene silencing (VIGS) and their overexpression in tree peony buds. PsmiR172b negatively regulated bud dormancy release, but PsTOE3 promoted bud dormancy release, and the genes associated with bud dormancy release, including PsEBB1, PsEBB3, PsCYCD, and PsBG6, were upregulated. Further analysis indicated that PsTOE3 directly regulated PsEBB1 by binding to its promoter, and the specific binding site was a C-repeat (ACCGAC). Ectopic expression in Arabidopsis revealed that the PsmiR172b-PsTOE3 module displayed conservative function in regulating flowering. In conclusion, our results provided a novel insight into the functions of PsmiR172-PsTOE3 and possible molecular mechanism underlying bud dormancy release in tree peony.
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Affiliation(s)
- Yuxi Zhang
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
| | | | | | - Demei Niu
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
| | - Yanchao Yuan
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
| | - Chunying Liu
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
| | - Xinmei Zhan
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China
- University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, 266109, China
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10
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Chen W, Tamada Y, Yamane H, Matsushita M, Osako Y, Gao-Takai M, Luo Z, Tao R. H3K4me3 plays a key role in establishing permissive chromatin states during bud dormancy and bud break in apple. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:1015-1031. [PMID: 35699670 DOI: 10.1111/tpj.15868] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 06/03/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
Bud dormancy helps woody perennials survive winter and activate robust plant development in the spring. For apple (Malus × domestica), short-term chilling induces bud dormancy in autumn, then prolonged chilling leads to dormancy release and a shift to a quiescent state in winter, with subsequent warm periods promoting bud break in spring. Epigenetic regulation contributes to seasonal responses such as vernalization. However, how histone modifications integrate seasonal cues and internal signals during bud dormancy in woody perennials remains largely unknown. Here, we show that H3K4me3 plays a key role in establishing permissive chromatin states during bud dormancy and bud break in apple. The global changes in gene expression strongly correlated with changes in H3K4me3, but not H3K27me3. High expression of DORMANCY-ASSOCIATED MADS-box (DAM) genes, key regulators of dormancy, in autumn was associated with high H3K4me3 levels. In addition, known DAM/SHORT VEGETATIVE PHASE (SVP) target genes significantly overlapped with H3K4me3-modified genes as bud dormancy progressed. These data suggest that H3K4me3 contributes to the central dormancy circuit, consisting of DAM/SVP and abscisic acid (ABA), in autumn. In winter, the lower expression and H3K4me3 levels at DAMs and gibberellin metabolism genes control chilling-induced release of dormancy. Warming conditions in spring facilitate the expression of genes related to phytohormones, the cell cycle, and cell wall modification by increasing H3K4me3 toward bud break. Our study also revealed that activation of auxin and repression of ABA sensitivity in spring are conditioned at least partly through temperature-mediated epigenetic regulation in winter.
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Affiliation(s)
- Wenxing Chen
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
- Key Laboratory of Horticultural Plant Biology, Huazhong Agricultural University, Wuhan, China
| | - Yosuke Tamada
- School of Engineering, Utsunomiya University, Utsunomiya, Japan
- National Institute for Basic Biology, Okazaki, Japan
- The Graduate University for Advanced Studies, SOKENDAI, Miura-gun, Japan
| | - Hisayo Yamane
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | | | - Yutaro Osako
- Faculty of Agriculture, Shinshu University, Kamiina-gun, Japan
| | - Mei Gao-Takai
- Agricultural Experimental Station, Ishikawa Prefectural University, Nonoichi, Japan
| | - Zhengrong Luo
- Key Laboratory of Horticultural Plant Biology, Huazhong Agricultural University, Wuhan, China
| | - Ryutaro Tao
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
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11
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Wang S, Yu Y, Xu C, Xiang L, Huang W, Zhang C, Sun S, Li T, Wang S. PbANK facilitates the long-distance movement of the PbWoxT1-PbPTB3 RNP complex by degrading deposited callose. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 318:111232. [PMID: 35351304 DOI: 10.1016/j.plantsci.2022.111232] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/10/2022] [Accepted: 02/19/2022] [Indexed: 06/14/2023]
Abstract
Grafting horticultural crops can result in phenotypic changes in the grafted materials due to the movement of macromolecular signals, including RNAs and proteins, across the graft union; however, little is known about the composition of trafficking ribonucleoprotein (RNP) complexes or how these macromolecules are transported. Here, we used the core of PbPTB3-PbWoxT1 RNP complex, PbPTB3, as bait to screen Pyrus betulaefolia cDNA library for its interaction partners. We identified an ankyrin protein, PbANK, that interacts with PbPTB3 to facilitate its transport through the phloem alongside PbWoxT1 mRNA. Heterografting experiments showed that silencing PbANK in rootstock prevented the transport of PbPTB3 and PbWoxT1 mRNA from the rootstock to the scion. Similarly, heterologous grafting experiments demonstrated that PbANK itself cannot be transported over long distances through a graft union. Fluorescence microscopy showed that silencing ANK affected the intercellular diffusion of PbPTB3 and increased callose deposition at plasmodesmata. Collectively, these findings demonstrate that PbANK mediates the long-distance movement of PbPTB3 and PbWoxT1 by degrading callose to increase the efficiency of cell-to-cell movement.
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Affiliation(s)
- Shengyuan Wang
- Laboratory of Fruit Cell and Molecular Breeding, China Agricultural University, Beijing 100193, China
| | - Yunfei Yu
- Laboratory of Fruit Cell and Molecular Breeding, China Agricultural University, Beijing 100193, China
| | - Chaoran Xu
- Laboratory of Fruit Cell and Molecular Breeding, China Agricultural University, Beijing 100193, China
| | - Ling Xiang
- Laboratory of Fruit Cell and Molecular Breeding, China Agricultural University, Beijing 100193, China
| | - Wenting Huang
- Laboratory of Fruit Cell and Molecular Breeding, China Agricultural University, Beijing 100193, China
| | - Chuan Zhang
- Laboratory of Fruit Cell and Molecular Breeding, China Agricultural University, Beijing 100193, China
| | - Shiyue Sun
- Laboratory of Fruit Cell and Molecular Breeding, China Agricultural University, Beijing 100193, China
| | - Tianzhong Li
- Laboratory of Fruit Cell and Molecular Breeding, China Agricultural University, Beijing 100193, China
| | - Shengnan Wang
- Laboratory of Fruit Cell and Molecular Breeding, China Agricultural University, Beijing 100193, China.
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12
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Perrot T, Pauly M, Ramírez V. Emerging Roles of β-Glucanases in Plant Development and Adaptative Responses. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11091119. [PMID: 35567119 PMCID: PMC9099982 DOI: 10.3390/plants11091119] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/16/2022] [Accepted: 04/18/2022] [Indexed: 05/04/2023]
Abstract
Plant β-glucanases are enzymes involved in the synthesis, remodelling and turnover of cell wall components during multiple physiological processes. Based on the type of the glycoside bond they cleave, plant β-glucanases have been grouped into three categories: (i) β-1,4-glucanases degrade cellulose and other polysaccharides containing 1,4-glycosidic bonds to remodel and disassemble the wall during cell growth. (ii) β-1,3-glucanases are responsible for the mobilization of callose, governing the symplastic trafficking through plasmodesmata. (iii) β-1,3-1,4-glucanases degrade mixed linkage glucan, a transient wall polysaccharide found in cereals, which is broken down to obtain energy during rapid seedling growth. In addition to their roles in the turnover of self-glucan structures, plant β-glucanases are crucial in regulating the outcome in symbiotic and hostile plant-microbe interactions by degrading non-self glucan structures. Plants use these enzymes to hydrolyse β-glucans found in the walls of microbes, not only by contributing to a local antimicrobial defence barrier, but also by generating signalling glucans triggering the activation of global responses. As a counterpart, microbes developed strategies to hijack plant β-glucanases to their advantage to successfully colonize plant tissues. This review outlines our current understanding on plant β-glucanases, with a particular focus on the latest advances on their roles in adaptative responses.
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