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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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2
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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: 0] [Impact Index Per Article: 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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3
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Ma J, Wang Q, Wei LL, Zhao Y, Zhang GZ, Wang J, Gu CH. Responses of the tree peony (Paeonia suffruticosa, Paeoniaceae) cultivar 'Yu Hong' to heat stress revealed by iTRAQ-based quantitative proteomics. Proteome Sci 2022; 20:18. [PMID: 36578066 PMCID: PMC9798725 DOI: 10.1186/s12953-022-00202-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 11/30/2022] [Indexed: 12/30/2022] Open
Abstract
Horticulture productivity has been increasingly restricted by heat stress from growing global warming, making it far below the optimum production capacity. As a popular ornamental cultivar of tree peony, Paeonia suffruticosa 'Yu Hong' has also been suffering from heat stress not suitable for its optimal growth. To better understand the response mechanisms against heat stress of tree peony, investigations of phenotypic changes, physiological responses, and quantitative proteomics were conducted. Phenotypic and physiological changes indicated that 24 h of exposure to heat stress (40 °C) was the critical duration of heat stress in tree peony. The proteomic analyses revealed a total of 100 heat-responsive proteins (HRPs). According to bioinformatic analysis of HRPs, the heat tolerance of tree peony might be related to signal transduction, synthesis/degradation, heat kinetic proteins, antioxidants, photosynthesis, energy conversion, and metabolism. Our research will provide some new insights into the molecular mechanism under the response against the heat stress of tree peony, which will benefit the future breeding of heat-resistant ornamental plants.
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Affiliation(s)
- Jin Ma
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China ,grid.443483.c0000 0000 9152 7385Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China ,grid.443483.c0000 0000 9152 7385Key Laboratory of National Forestry and Grassland Administration On Germplasm Innovation and Utilization for Southern Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China
| | - Qun Wang
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China ,grid.443483.c0000 0000 9152 7385Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China ,grid.443483.c0000 0000 9152 7385Key Laboratory of National Forestry and Grassland Administration On Germplasm Innovation and Utilization for Southern Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China
| | - Ling-Ling Wei
- grid.443483.c0000 0000 9152 7385Institute of Ecological Civilization, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China ,grid.66741.320000 0001 1456 856XSchool of Humanities & Social Sciences, Beijing Forestry University, Beijing, 100083 China
| | - Yu Zhao
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China ,grid.443483.c0000 0000 9152 7385Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China ,grid.443483.c0000 0000 9152 7385Key Laboratory of National Forestry and Grassland Administration On Germplasm Innovation and Utilization for Southern Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China
| | - Guo-Zhe Zhang
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China ,grid.443483.c0000 0000 9152 7385Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China ,grid.443483.c0000 0000 9152 7385Key Laboratory of National Forestry and Grassland Administration On Germplasm Innovation and Utilization for Southern Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China
| | - Jie Wang
- Kunpeng Institute of Modern Agriculture at Foshan, Guangdong Foshan, 528200 China ,grid.1025.60000 0004 0436 6763College of Science, Health, Engineering and Education, Murdoch University, Perth, WA 6150 Australia
| | - Cui-Hua Gu
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China ,grid.443483.c0000 0000 9152 7385Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China ,grid.443483.c0000 0000 9152 7385Key Laboratory of National Forestry and Grassland Administration On Germplasm Innovation and Utilization for Southern Garden Plants, Zhejiang Agriculture & Forestry University, Hangzhou, 311300 China
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Gao X, Yuan Y, Liu Z, Liu C, Xin H, Zhang Y, Gai S. Chilling and gibberellin acids hyperinduce β-1,3-glucanases to reopen transport corridor and break endodormancy in tree peony (Paeonia suffruticosa). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 167:771-784. [PMID: 34530322 DOI: 10.1016/j.plaphy.2021.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 09/01/2021] [Accepted: 09/02/2021] [Indexed: 05/21/2023]
Abstract
Bud endodormancy is accompanied by transport channel apertures blockage through callose deposition, and its resume to growth requires evoking β-1,3-glucanases (BGs) to unchoke the conduit. To understand out its working manner, the statuses of the transport channels were evaluated and candidate BGs were identified during chilling and gibberellin acids (GA) induced dormancy release in tree peony. Calcein reflects plasmodesmata permeability, and no calcein was observed in the bud together with density aniline blue fluorescent around the stem phloem at 0 d chilling. With the increase of chilling accumulation, the contents of glucan declined and the activities of gulcanase increased gradually in buds, and the calcein reached the top of flower primordia at 21 d chilled bud. Both GA3 and GA4 feedings promoted bud sprouting and growth along with rapidly unchoking the transport channels, and GA3 was more effective. Several candidate β-1,3-glucanase genes were detected, combining transcriptional profiling and quantitative PCR analysis. PsBG1, PsBG3, PsBG6, PsBG8 and PsBG9 were inducible by chilling accumulation and presented laminarin hydrolyzing activities after prokaryotically expression, while PsBG1, PsBG3, PsBG8 and PsBG9 responded to GAs application. Subcellular localizations revealed that PsBG6 and PsBG9 were plasmodesmata residents. It was concluded that PsBG6 played a vital role in chilling accumulation response and PsBG9 was central in GAs-induced dormancy release, and they could be used as marker genes for dormancy release in tree peony. These results were of great value to understand the mechanism of dormancy regulation and as an important fundamental for forcing culture technology in tree peony.
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Affiliation(s)
- Xuekai Gao
- 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.
| | - Ziqi Liu
- 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.
| | - Hua Xin
- 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.
| | - 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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Smita S, Robben M, Deuja A, Accerbi M, Green PJ, Subramanian S, Fennell A. Integrative Analysis of Gene Expression and miRNAs Reveal Biological Pathways Associated with Bud Paradormancy and Endodormancy in Grapevine. PLANTS (BASEL, SWITZERLAND) 2021; 10:669. [PMID: 33807184 PMCID: PMC8067045 DOI: 10.3390/plants10040669] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/24/2021] [Accepted: 03/24/2021] [Indexed: 11/16/2022]
Abstract
Transition of grapevine buds from paradormancy to endodormancy is coordinated by changes in gene expression, phytohormones, transcription factors, and other molecular regulators, but the mechanisms involved in transcriptional and post-transcriptional regulation of dormancy stages are not well delineated. To identify potential regulatory targets, an integrative analysis of differential gene expression profiles and their inverse relationships with miRNA abundance was performed in paradormant (long day (LD) 15 h) or endodormant (short day (SD), 13 h) Vitis riparia buds. There were 400 up- and 936 downregulated differentially expressed genes in SD relative to LD budsGene set and gene ontology enrichment analysis indicated that hormone signaling and cell cycling genes were downregulated in SD relative to LD buds. miRNA abundance and inverse expression analyses of miRNA target genes indicated increased abundance of miRNAs that negatively regulate genes involved with cell cycle and meristem development in endodormant buds and miRNAs targeting starch metabolism related genes in paradormant buds. Analysis of interactions between abundant miRNAs and transcription factors identified a network with coinciding regulation of cell cycle and epigenetic regulation related genes in SD buds. This network provides evidence for cross regulation occurring between miRNA and transcription factors both upstream and downstream of MYB3R1.
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Affiliation(s)
- Shuchi Smita
- Edgar McFadden BioStress Laboratory, Agronomy, Horticulture, and Plant Science Department, BioSNTR, South Dakota State University, Brookings, SD 57007, USA; (S.S.); (M.R.); (A.D.); (S.S.)
| | - Michael Robben
- Edgar McFadden BioStress Laboratory, Agronomy, Horticulture, and Plant Science Department, BioSNTR, South Dakota State University, Brookings, SD 57007, USA; (S.S.); (M.R.); (A.D.); (S.S.)
| | - Anup Deuja
- Edgar McFadden BioStress Laboratory, Agronomy, Horticulture, and Plant Science Department, BioSNTR, South Dakota State University, Brookings, SD 57007, USA; (S.S.); (M.R.); (A.D.); (S.S.)
| | - Monica Accerbi
- Department of Plant and Soil Sciences and Delaware Biotechnology Institute, University of Delaware, Newark, DE 19713, USA; (M.A.); (P.J.G.)
| | - Pamela J. Green
- Department of Plant and Soil Sciences and Delaware Biotechnology Institute, University of Delaware, Newark, DE 19713, USA; (M.A.); (P.J.G.)
| | - Senthil Subramanian
- Edgar McFadden BioStress Laboratory, Agronomy, Horticulture, and Plant Science Department, BioSNTR, South Dakota State University, Brookings, SD 57007, USA; (S.S.); (M.R.); (A.D.); (S.S.)
| | - Anne Fennell
- Edgar McFadden BioStress Laboratory, Agronomy, Horticulture, and Plant Science Department, BioSNTR, South Dakota State University, Brookings, SD 57007, USA; (S.S.); (M.R.); (A.D.); (S.S.)
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6
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Zhang Y, Zhang T, Si F, Wang X, Liu C, Yuan Y, Feng W, Gai S. Changes of DNA Methylation Patterns Reveal Epigenetic Modification of Dormancy Release-Related Genes Is Induced by Chilling in Tree Peony. DNA Cell Biol 2021; 40:606-617. [PMID: 33493084 DOI: 10.1089/dna.2020.6142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
DNA methylation is an important epigenetic regulator of gene expression. Application of 5-azacytidine (a methylation inhibitor) significantly promoted bud sprouting rate and the elongation of branches and leaves in "Luhehong" and "Fengdanbai." In total, 11,166 and 11,443 fragments were obtained by methylation-sensitive amplified polymorphism (MSAP) analysis during chilling-induced dormancy release in the two varieties, respectively. Total methylation levels were high in dormant buds, mainly for hemimethylation, which were slowly increased by short-term chilling (7 days) and decreased by long-term chilling. Compared with 0 day, the ratio of the methylation downregulated group increased during dormancy release, whereas that of the upregulated group declined gradually. These variations were consistent with the dynamic expressions of DNA methyltransferase/demethylase genes and their enzyme activity changes. In total, 13 polymorphic MSAP fragments were similar to known proteins (E-value <1e-5), and their methylation statuses were consistent with their expression patterns. The expression change of PsCWH, encoding cell wall hydrolase, might be due to DNA methylation ratios of CpG sites identified by bisulfite sequencing. These results indicated that chilling accumulation promoted bud dormancy release and sprouting through DNA methylation modification of specific genes. This study would provide new insights into the molecular mechanism underlying dormancy release in tree peony.
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Affiliation(s)
- Yuxi Zhang
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China.,University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
| | - Tao Zhang
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China.,University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
| | - Fuhui Si
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China.,University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
| | - Xueting Wang
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China.,University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
| | - Chunying Liu
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China.,University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
| | - Yanchao Yuan
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China.,University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
| | - Weirong Feng
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China.,University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
| | - Shupeng Gai
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China.,University Key Laboratory of Plant Biotechnology in Shandong Province, Qingdao, China
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Wang X, Zhang R, Huang Q, Shi X, Li D, Shao L, Xu T, Horvath DP, Xia Y, Zhang J. Comparative Study on Physiological Responses and Gene Expression of Bud Endodormancy Release Between Two Herbaceous Peony Cultivars ( Paeonia lactiflora Pall.) With Contrasting Chilling Requirements. FRONTIERS IN PLANT SCIENCE 2021; 12:772285. [PMID: 35185946 PMCID: PMC8847303 DOI: 10.3389/fpls.2021.772285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 12/23/2021] [Indexed: 05/10/2023]
Abstract
With the global temperature increase, diverse endogenous factors and environmental cues can lead to severe obstacles to bud endodormancy release for important economic plants, such as herbaceous peony (Paeonia lactiflora Pall.). Knowing the underlying mechanism in bud endodormancy release is vital for widely planting herbaceous peony at low latitudes with warm winter climates. A systematic study was carried out between the southern Chinese cultivar 'Hang Baishao' with low-chilling requirement (CR) trait and the northern cultivar 'Zhuguang' with high-CR trait. Peony buds were sampled at regular intervals under natural cold during the crucial bud endodormancy release stage. Physiology and morphology of the buds were observed, and the roles of reactive oxygen species (ROS) and relevant genes in the regulation of bud endodormancy release were also highlighted, which has been rather rare in previous bud dormancy studies of both herbaceous and tree peonies. The expression of the starch metabolism- and sucrose synthesis-related genes PlAMY PlSPS and PlSUS was lower in the high-CR 'Zhuguang' and corresponded to a lower content of soluble sugars. The expression of polyamine oxidase gene PlPAO2 correlated with a higher level of hydrogen peroxide (H2O2) in high-CR 'Zhuguang' than in low CR 'Hang Baishao' during bud endodormancy. Expression of PlMAPKKK5, an intermediate gene in the abscisic acid (ABA) response to ROS signaling, correlated with ROS levels and ABA content. We present the hypothesis that accumulation of ROS increases ABA content and decreases GA3 content and signal transduction leading to reduced expression of PlSVP and PlSOC1. Reduced cell division and increased cellular damage which probably blocked bud endodormancy release were also observed in high-CR 'Zhuguang' through histological observation and related genes expression. This study provides a comparative analysis on physiological responses and gene expression patterns of bud dormancy of geophytes in an increasingly unsuitable environment.
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Affiliation(s)
- Xiaobin Wang
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Runlong Zhang
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Qiaoyu Huang
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, China
| | - Xiaohua Shi
- Zhejiang Institute of Landscape Plants and Flowers, Hangzhou, China
| | - Danqing Li
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Lingmei Shao
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Tong Xu
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - David P. Horvath
- Agricultural Research Service, United States Department of Agriculture, Washington, DC, United States
- *Correspondence: David P. Horvath,
| | - Yiping Xia
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- Yiping Xia,
| | - Jiaping Zhang
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- Jiaping Zhang,
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Ren X, Shi Y, Xue Y, Xue J, Tian Y, Wang S, Zhang X. Seed Proteomic Profiles of Three Paeonia Varieties and Evaluation of Peony Seed Protein as a Food Product. BIOMED RESEARCH INTERNATIONAL 2020; 2020:5271296. [PMID: 33274214 PMCID: PMC7695507 DOI: 10.1155/2020/5271296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 07/21/2020] [Accepted: 08/18/2020] [Indexed: 11/30/2022]
Abstract
Peony (Paeonia) has high ornamental, edible, and medicinal values. In order to distinguish seeds varieties, describe the proteomic profiles correlated with stress tolerance, and evaluate peony seed protein (PSP) as a functional food product, we characterized the seed protein profiles of these three species and their glucosidase inhibition activities. Results showed that the intensity of protein bands in sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and specific protein ID (especially for specifically expressed proteins (SEPs)) was effective to distinguish these peony seed varieties. Proteomic analysis of the three species showed that P. ostii "Fengdan" has heat and pathogen tolerance-related proteins, while P. rockii has higher content of proteins related to cold resistance, which were all highly consistent with their adaptation of heat or cold habitat. Moreover, stress-related proteins were also accumulated in P. lactiflora Pall "Hangshao" seeds, showing its potential for stress resistance. Further protein analysis showed that the primary composition of PSP was albumin and globulin. And the solubility of PSP was good. Furthermore, PSP also showed high glucosidase inhibition activity, indicating that PSP might have some potential function for the remission of hyperglycemia. And P. ostii "Fengdan" seeds may be a better source for protein production than seeds of the other two species in terms of protein solubility and the content of total protein, albumin, and globulin. In addition, an optimal protocol of microwave-assisted alkali extraction was developed to produce PSP. In conclusion, the evaluated stress-related proteins in three peony seed species by proteomic analysis quite agreed with their adaptation of heat or cold stress; proteomics could also be a very useful tool for distinguishing species in the production; and peony seeds may be a good source for protein production.
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Affiliation(s)
- Xiuxia Ren
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing, China
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Institute of Peony, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yantong Shi
- Beijing Agricultural Technology Extension Station, Beijing 100029, China
| | - Yuqian Xue
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing, China
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Institute of Peony, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jingqi Xue
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing, China
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Institute of Peony, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yuanyuan Tian
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing, China
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Institute of Peony, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Shunli Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing, China
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Institute of Peony, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiuxin Zhang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing, China
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Institute of Peony, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- National Agricultural Science & Technology Center, Chengdu, China
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Zhu H, Chen PY, Zhong S, Dardick C, Callahan A, An YQ, van Knocker S, Yang Y, Zhong GY, Abbott A, Liu Z. Thermal-responsive genetic and epigenetic regulation of DAM cluster controlling dormancy and chilling requirement in peach floral buds. HORTICULTURE RESEARCH 2020; 7:114. [PMID: 32821397 PMCID: PMC7395172 DOI: 10.1038/s41438-020-0336-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 05/10/2020] [Accepted: 05/22/2020] [Indexed: 05/03/2023]
Abstract
The Dormancy-associated MADS-box (DAM) gene cluster in peach serves as a key regulatory hub on which the seasonal temperatures act and orchestrate dormancy onset and exit, chilling response and floral bud developmental pace. Yet, how different temperature regimes interact with and regulate the six linked DAM genes remains unclear. Here, we demonstrate that chilling downregulates DAM1 and DAM3-6 in dormant floral buds with distinct patterns and identify DAM4 as the most abundantly expressed one. We reveal multiple epigenetic events, with tri-methyl histone H3 lysine 27 (H3K27me3) induced by chilling specifically in DAM1 and DAM5, a 21-nt sRNA in DAM3 and a ncRNA induced in DAM4. Such induction is inversely correlated with downregulation of their cognate DAMs. We also show that the six DAMs were hypermethylated, associating with the production of 24-nt sRNAs. Hence, the chilling-responsive dynamic of the different epigenetic elements and their interactions likely define distinct expression abundance and downregulation pattern of each DAM. We further show that the expression of the five DAMs remains steadily unchanged or continuously downregulated at the ensuing warm temperature after chilling, and this state of regulation correlates with robust increase of sRNA expression, H3K27me3 and CHH methylation, which is particularly pronounced in DAM4. Such robust increase of repressive epigenetic marks may irreversibly reinforce the chilling-imposed repression of DAMs to ensure flower-developmental programming free from any residual DAM inhibition. Taken together, we reveal novel information about genetic and epigenetic regulation of the DAM cluster in peach, which will be of fundamental significance in understanding of the regulatory mechanisms underlying chilling requirement and dormancy release, and of practical application for improvement of plasticity of flower time and bud break in fruit trees to adapt changing climates.
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Affiliation(s)
- Hong Zhu
- USDA-ARS, Appalachian Fruit Research Station, Kearneysville, WV 25430 USA
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650 China
| | - Pao-Yang Chen
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, 11529 Taiwan
| | - Silin Zhong
- The State Key Laboratory of Agrobiotechnology, School of Life Science, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Chris Dardick
- USDA-ARS, Appalachian Fruit Research Station, Kearneysville, WV 25430 USA
| | - Ann Callahan
- USDA-ARS, Appalachian Fruit Research Station, Kearneysville, WV 25430 USA
| | - Yong-Qiang An
- USDA-ARS, Plant Genetics Research Unit, Donald Danforth Plant Science Center, St Louis, MO 63132 USA
| | - Steve van Knocker
- Department of Horticulture, Michigan State University, East Lansing, MI 48834 USA
| | - Yingzhen Yang
- USDA-ARS, Grape Genetic Research Unit, Geneva, NY 14456 USA
| | - Gan-Yuan Zhong
- USDA-ARS, Grape Genetic Research Unit, Geneva, NY 14456 USA
| | - Albert Abbott
- Forest Health Research and Education Center, University of Kentucky, Lexington, KY 40546 USA
| | - Zongrang Liu
- USDA-ARS, Appalachian Fruit Research Station, Kearneysville, WV 25430 USA
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10
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Zhang Y, Si F, Wang Y, Liu C, Zhang T, Yuan Y, Gai S. Application of 5-azacytidine induces DNA hypomethylation and accelerates dormancy release in buds of tree peony. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 147:91-100. [PMID: 31855819 DOI: 10.1016/j.plaphy.2019.12.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 11/28/2019] [Accepted: 12/09/2019] [Indexed: 05/22/2023]
Abstract
Release of bud dormancy is a prerequisite for the growth resumption and production in perennial plants such as tree peony. DNA methylation plays a pivotal role in regulating gene expression. In this study, combination of morphologic observation and DNA methylation analysis indicated that 5-azacytidine (5-azaC) application for 7 d declined 5 mC quantities and promoted dormancy release. After 5-azaC treatment, total 174,341 unigenes and 1818 differentially expression genes (DEGs) were obtained by RNA-seq, of which there were 1194 DEGs after 1 d 5-azaC treatment (AD1 vs CD1), and 624 DEGs after 7 d (AD7 vs CD7), respectively. The KEGG pathway analysis identified that totally 10 DEGs annotated in DNA replication pathway were enriched when AD7 compared with CD7. Furthermore, the expression patterns of several DEGs by real-time quantitative RT-PCR were consistent with that of RNA-seq data. 5-azaC application significantly decreased the expression levels of DNA methyltransferase genes, PsCMT3, PsMET1 and PsDRM2, and increased the transcript of demethylase gene PsROS1. Simultaneously, total methyltransferases activity decreased, and demethylase activity was induced by 5-azaC. In summary, application of 5-azaC inhibited the expression of the genes related to growth and development in short-term, indicating a possible toxic effect to plant, and its long-term effect was to induce hypomethylation by increasing demethylase genes transcripts and decreasing the expressions of methyltransferase genes, and then activate cell cycle, DNA replication and glycol-metabolism processes, which subsequently accelerated dormancy release. All these would provide a new strategy to further understand the molecular mechanism of dormancy release in tree peony.
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Affiliation(s)
- Yuxi Zhang
- College of Life Science, Qingdao Agricultural University, Key Lab of Plant Biotechnology in Universities of Shandong Province, Qingdao, China.
| | - Fuhui Si
- College of Life Science, Qingdao Agricultural University, Key Lab of Plant Biotechnology in Universities of Shandong Province, Qingdao, China.
| | - Yanyan Wang
- College of Life Science, Qingdao Agricultural University, Key Lab of Plant Biotechnology in Universities of Shandong Province, Qingdao, China.
| | - Chunying Liu
- College of Life Science, Qingdao Agricultural University, Key Lab of Plant Biotechnology in Universities of Shandong Province, Qingdao, China.
| | - Tao Zhang
- College of Life Science, Qingdao Agricultural University, Key Lab of Plant Biotechnology in Universities of Shandong Province, Qingdao, China.
| | - Yanchao Yuan
- College of Life Science, Qingdao Agricultural University, Key Lab of Plant Biotechnology in Universities of Shandong Province, Qingdao, China.
| | - Shupeng Gai
- College of Life Science, Qingdao Agricultural University, Key Lab of Plant Biotechnology in Universities of Shandong Province, Qingdao, China.
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11
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Fan Y, Wang Q, Dong Z, Yin Y, Teixeira da Silva JA, Yu X. Advances in molecular biology of Paeonia L. PLANTA 2019; 251:23. [PMID: 31784828 DOI: 10.1007/s00425-019-03299-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/11/2019] [Indexed: 06/10/2023]
Abstract
Molecular biology can serve as a tool to solve the limitations of traditional breeding and cultivation techniques related to flower patterns, the improvement of flower color, and the regulation of flowering and stress resistance. These characteristics of molecular biology ensured its significant role in improving the efficiency of breeding and germplasm amelioration of Paeonia. This review describes the advances in molecular biology of Paeonia, including: (1) the application of molecular markers; (2) genomics, transcriptomics, proteomics, metabolomics, and microRNA studies; (3) studies of functional genes; and (4) molecular biology techniques. This review also points out select limitations in current molecular biology, analyzes the direction of Paeonia molecular biology research, and provides advice for future research objectives.
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Affiliation(s)
- Yongming Fan
- College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, People's Republic of China
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Beijing, 100083, People's Republic of China
| | - Qi Wang
- College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, People's Republic of China
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Beijing, 100083, People's Republic of China
| | - Zhijun Dong
- College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, People's Republic of China
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Beijing, 100083, People's Republic of China
| | - Yijia Yin
- College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, People's Republic of China
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Beijing, 100083, People's Republic of China
| | | | - Xiaonan Yu
- College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, People's Republic of China.
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Beijing, 100083, People's Republic of China.
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12
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Xin H, Zhang Y, Wang X, Liu C, Feng W, Gai S. Morphological, anatomical and DNA methylation changes of tree peony buds during chilling induced dormancy release. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 144:64-72. [PMID: 31561199 DOI: 10.1016/j.plaphy.2019.09.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 09/10/2019] [Accepted: 09/12/2019] [Indexed: 05/27/2023]
Abstract
Bud endodormancy in tree peony is a growth cessation-like state, and sufficient chilling perception is necessary to break it. In this study, 120 plants were subjected to 0-4 °C climate chamber for 0-28 d with a weekly interval, morphology and structure changes of buds were studied with a scanning electron microscope (SEM) and paraffin sections during the dormancy process. Dormancy status was evaluated after being transferred to greenhouse for 30 d. Results showed that the diameter of the buds gradually expanded, along with continuous elongation of sepals, petals, stamens and carpels in the chilling accumulation process. Notably, dormancy release was marked with the establishment of xylem vessels in lateral vein of the petal. Meanwhile, DNA methylation was detected by HPLC and immunochemical technology, aimed to illuminate the role of DNA methylation in the dormancy release, we found that 5 mC level fell from 39.4% to 24.2% after exposed to 28 d chilling. These results were consistent with the immunochemical analysis, and inversely related to the sprouting rate after being moved to greenhouse for 30 d. Exogenous application of 5azaC (5-azacytidine) decreased DNA methylation level, accompanied by an improved bud sprouting capacity, while the effect of SAM (S-adenosylmethionine) was the opposite. In summary, prolonged chilling was accompanied by further differentiation and development of the compound bud, which resulted in DNA hypomethylation and promoted dormancy release in tree peony.
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Affiliation(s)
- Hua Xin
- 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.
| | - Xueting Wang
- 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.
| | - Weirong Feng
- 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.
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13
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Baldermann S, Homann T, Neugart S, Chmielewski FM, Götz KP, Gödeke K, Huschek G, Morlock GE, Rawel HM. Selected Plant Metabolites Involved in Oxidation-Reduction Processes during Bud Dormancy and Ontogenetic Development in Sweet Cherry Buds ( Prunus avium L.). Molecules 2018; 23:E1197. [PMID: 29772774 PMCID: PMC6099681 DOI: 10.3390/molecules23051197] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/14/2018] [Accepted: 05/16/2018] [Indexed: 11/25/2022] Open
Abstract
Many biochemical processes are involved in regulating the consecutive transition of different phases of dormancy in sweet cherry buds. An evaluation based on a metabolic approach has, as yet, only been partly addressed. The aim of this work, therefore, was to determine which plant metabolites could serve as biomarkers for the different transitions in sweet cherry buds. The focus here was on those metabolites involved in oxidation-reduction processes during bud dormancy, as determined by targeted and untargeted mass spectrometry-based methods. The metabolites addressed included phenolic compounds, ascorbate/dehydroascorbate, reducing sugars, carotenoids and chlorophylls. The results demonstrate that the content of phenolic compounds decrease until the end of endodormancy. After a long period of constancy until the end of ecodormancy, a final phase of further decrease followed up to the phenophase open cluster. The main phenolic compounds were caffeoylquinic acids, coumaroylquinic acids and catechins, as well as quercetin and kaempferol derivatives. The data also support the protective role of ascorbate and glutathione in the para- and endodormancy phases. Consistent trends in the content of reducing sugars can be elucidated for the different phenophases of dormancy, too. The untargeted approach with principle component analysis (PCA) clearly differentiates the different timings of dormancy giving further valuable information.
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Affiliation(s)
- Susanne Baldermann
- Institute of Nutritional Science, University of Potsdam, Arthur-Scheunert-Allee 114-116, 14558 Nuthetal, Potsdam, Germany.
- Leibniz Institute of Vegetable and Ornamental Crops (IGZ), Theodor-Echtermeyer-Weg 1, 14979 Großbeeren, Germany.
| | - Thomas Homann
- Institute of Nutritional Science, University of Potsdam, Arthur-Scheunert-Allee 114-116, 14558 Nuthetal, Potsdam, Germany.
| | - Susanne Neugart
- Leibniz Institute of Vegetable and Ornamental Crops (IGZ), Theodor-Echtermeyer-Weg 1, 14979 Großbeeren, Germany.
| | - Frank-M Chmielewski
- Agricultural Climatology, Faculty of Life Sciences, Humboldt-University of Berlin, Albrecht-Thaer-Weg 5, 14195 Berlin, Germany.
| | - Klaus-Peter Götz
- Agricultural Climatology, Faculty of Life Sciences, Humboldt-University of Berlin, Albrecht-Thaer-Weg 5, 14195 Berlin, Germany.
| | - Kristin Gödeke
- IGV-Institut für Getreideverarbeitung GmbH, Arthur-Scheunert-Allee 40/41, 14558, Nuthetal OT Bergholz-Rehbrücke, Germany.
| | - Gerd Huschek
- IGV-Institut für Getreideverarbeitung GmbH, Arthur-Scheunert-Allee 40/41, 14558, Nuthetal OT Bergholz-Rehbrücke, Germany.
| | - Getrud E Morlock
- Chair of Food Sciences, Institute of Nutritional Science, Interdisciplinary Research Center (IFZ), Justus Liebig University Giessen, Heinrich Buff Ring 26-32, D-35392 Giessen, Germany.
| | - Harshadrai M Rawel
- Institute of Nutritional Science, University of Potsdam, Arthur-Scheunert-Allee 114-116, 14558 Nuthetal, Potsdam, Germany.
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14
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Beauvieux R, Wenden B, Dirlewanger E. Bud Dormancy in Perennial Fruit Tree Species: A Pivotal Role for Oxidative Cues. FRONTIERS IN PLANT SCIENCE 2018; 9:657. [PMID: 29868101 PMCID: PMC5969045 DOI: 10.3389/fpls.2018.00657] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 04/30/2018] [Indexed: 05/07/2023]
Abstract
For perennial plants, bud dormancy is a crucial step as its progression over winter determines the quality of bud break, flowering, and fruiting. In the past decades, many studies, based on metabolic, physiological, subcellular, genetic, and genomic analyses, have unraveled mechanisms underlying bud dormancy progression. Overall, all the pathways identified are interconnected in a very complex manner. Here, we review early and recent findings on the dormancy processes in buds of temperate fruit trees species including hormonal signaling, the role of plasma membrane, carbohydrate metabolism, mitochondrial respiration and oxidative stress, with an effort to link them together and emphasize the central role of reactive oxygen species accumulation in the control of dormancy progression.
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15
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Guzicka M, Pawlowski TA, Staszak A, Rozkowski R, Chmura DJ. Molecular and structural changes in vegetative buds of Norway spruce during dormancy in natural weather conditions. TREE PHYSIOLOGY 2018; 38:721-734. [PMID: 29300984 DOI: 10.1093/treephys/tpx156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 11/20/2017] [Indexed: 05/08/2023]
Abstract
The dormancy and the growth of trees in temperate climates are synchronized with seasons. Preparation for dormancy and its proper progression are key for survival and development in the next season. Using a unique approach that combined microscopy and proteomic methods, we investigated changes in Norway spruce (Picea abies (L.) H. Karst.) embryonic shoots during four distinct stages of dormancy in natural weather conditions. We identified 13 proteins that varied among dormancy stages, and were linked to regulation of protein level; functioning of chloroplasts and other plastids; DNA and RNA regulation; and oxidative stress. We also found a group of five proteins, related to cold hardiness, that did not differ in expression among stages of dormancy, but had the highest abundancy level. Ultrastructure of organelles is tightly linked to their metabolic activity, and hence may indicate dormancy status. The observed ultrastructure during endodormancy was stable, whereas during ecodormancy, the structural changes were dynamic and related mainly to nucleus, plastids and mitochondria. At the ultrastructural level, the lack of starch and the presence of callose in plasmodesmata in all regions of embryonic shoot were indicators of full endodormancy. At the initiation of ecodormancy, we noted an increase in metabolic activity of organelles, tissue-specific starch hyperaccumulation and degradation. However, in proteomic analysis, we did not find variation in expression of proteins related to starch degradation or to symplastic isolation of cells. The combination of ultrastructural and proteomic methods gave a more complete picture of vegetative bud dormancy than either of them applied separately. We found some changes at the structural level, but not their analogues in the proteome. Our study suggests a very important role of plastids' organization and metabolism, and their protection in the course of dormancy and during the shift from endo- to ecodormancy and the acquisition of growth competence.
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Affiliation(s)
- Marzenna Guzicka
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland
| | - Tomasz A Pawlowski
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland
| | - Aleksandra Staszak
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland
| | - Roman Rozkowski
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland
| | - Daniel J Chmura
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland
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16
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Identification and characterization of microRNAs in tree peony during chilling induced dormancy release by high-throughput sequencing. Sci Rep 2018. [PMID: 29540706 PMCID: PMC5852092 DOI: 10.1038/s41598-018-22415-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Tree peony, one of the most valuable horticultural and medicinal plants in the world, has to go through winter to break dormancy. Growing studies from molecular aspects on dormancy release process have been reported, but inadequate study has been done on miRNA-guided regulation in tree peony. In this study, high-throughput sequencing was employed to identify and characterize miRNAs in three libraries (6 d, 18 d and 24 d chilling treatments). There were 7,122, 10,076 and 9,097 unique miRNA sequences belonging to 52, 87 and 68 miRNA families, respectively. A total of 32 conserved miRNAs and 17 putative novel miRNAs were identified during dormancy release. There were 771 unigenes as potential targets of 62 miRNA families. Total 112 known miRNAs were differentially expressed, of which 55 miRNAs were shared among three libraries and 28 miRNAs were only found in 18 d chilling duration library. The expression patterns of 15 conserved miRNAs were validated and classified into four types by RT-qPCR. Combining with our microarray data under same treatments, five miRNAs (miR156k, miR159a, miR167a, miR169a and miR172a) were inversely correlated to those of their target genes. Our results would provide new molecular basis about dormancy release in tree peony.
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17
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Zhang J, Li D, Shi X, Zhang D, Qiu S, Wei J, Zhang J, Zhou J, Zhu K, Xia Y. Mining and expression analysis of candidate genes involved in regulating the chilling requirement fulfillment of Paeonia lactiflora 'Hang Baishao'. BMC PLANT BIOLOGY 2017; 17:262. [PMID: 29273002 PMCID: PMC5741883 DOI: 10.1186/s12870-017-1205-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 12/06/2017] [Indexed: 05/06/2023]
Abstract
BACKGROUND The artificial enlargement of the planting area and ecological amplitude of ornamentals for horticultural and landscape applications are significant. Herbaceous peony (Paeonia lactiflora Pall.) is a world-famous ornamental with attractive and fragrant flowers and is mainly planted in temperate and cool areas. Comparatively higher winter temperatures in the subtropical and tropical Northern Hemisphere result in a deficit of chilling accumulation for bud dormancy release, which severely hinders "The southward plantation of herbaceous peony". Studies on the dormancy, chilling requirement (CR) and relevant molecular mechanisms of peony are needed to enhance our ability to extend the range of this valuable horticultural species. RESULTS Based on natural and artificial chilling experiments, and chilling hour (CH) and chilling unit (CU) evaluation systems, the lowest CR of 'Hang Baishao' was between 504.00 and 672.00 CHs and the optimal CR was 672.00 CHs and 856.08 CUs for achieving strong sprouting, growth and flowering performance. Transcriptome sequencing and gene identification by RNA-Seq were performed on 'Hang Baishao' buds during the dormancy and sprouting periods. Six gene libraries were constructed, and 66 temperature- and photoperiod-associated unigenes were identified as the potential candidate genes that may regulate or possibly determine CR characteristics. The difference in the expression patterns of SUPPRESSPOR OF OVEREXPRESSION OF CONSTANS1 (SOC1) between the winters of 2012-2013 and 2015-2016, and the difference of CR fulfillment periods also between these two winters represented the interesting congruent relationships. This correlation was also observed for WRKY DNA-BINDING PROTEIN 33 (WRKY 33). CONCLUSIONS Combined with the results acquired from all of experiments, 'Hang Baishao' was confirmed to be a superb peony resource that have significantly low CR characteristics. The two genes of SOC1 and WRKY33 are likely involved in determining the CR amount and fulfillment period of 'Hang Baishao'. HEAT SHOCK PROTEIN, OSMOTIN and TIMING OF CAB EXPRESSION 1 also deserve attention for the CR research. This study could contribute to the knowledge of the deep factors and mechanisms that regulate CR characteristics, and may be beneficial for breeding new germplasms that have low CRs for landscape or horticulture applications in subtropical regions.
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Affiliation(s)
- Jiaping Zhang
- Institute of Landscape Architecture, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058 China
| | - Danqing Li
- Institute of Landscape Architecture, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058 China
| | - Xiaohua Shi
- Research & Development Centre of Flower, Zhejiang Academy of Agricultural Sciences, Hangzhou, 311202 China
| | - Dong Zhang
- Institute of Landscape Architecture, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058 China
| | - Shuai Qiu
- Research & Development Center, Hangzhou Landscaping Incorporated, Hangzhou, 310020 China
| | - Jianfen Wei
- Research & Development Center, Hangzhou Landscaping Incorporated, Hangzhou, 310020 China
| | - Jiao Zhang
- Institute of Landscape Architecture, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058 China
| | - Jianghua Zhou
- Research & Development Centre of Flower, Zhejiang Academy of Agricultural Sciences, Hangzhou, 311202 China
| | - Kaiyuan Zhu
- Research & Development Centre of Flower, Zhejiang Academy of Agricultural Sciences, Hangzhou, 311202 China
| | - Yiping Xia
- Institute of Landscape Architecture, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, 310058 China
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