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Huang C, Wang D, Yang Y, Yang H, Zhang B, Li H, Zhang H, Li Y, Yuan W. SUPPRESSOR OF FRIGIDA 4 cooperates with the histone methylation reader EBS to positively regulate root development. PLANT PHYSIOLOGY 2024:kiae321. [PMID: 38875008 DOI: 10.1093/plphys/kiae321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 04/20/2024] [Indexed: 06/15/2024]
Abstract
Maintenance and homeostasis of the quiescent center (QC) in Arabidopsis (Arabidopsis thaliana) root apical meristems are critical for stem cell organization and root development. Despite great progress in relevant research, the molecular mechanisms that determine the root stem cell fate and QC still need further exploration. In Arabidopsis, SUPPRESSOR OF FRIGIDA 4 (SUF4) encodes a C2H2-type zinc finger protein that represses flowering by transcriptional activation of FLOWERING LOCUS C (FLC) through the FRIGIDA (FRI) pathway, and EARLY BOLTING IN SHORT DAYS (EBS) is a bivalent histone reader that prevents premature flowering. Here, we found that SUF4 directly interacts with EBS in vivo and in vitro. Loss of function of SUF4 and/or EBS resulted in disorganization of the QC, aberrant cell division, and stunted root growth. RNA-seq and reverse transcription quantitative real-time polymerase chain reaction analysis revealed that SUF4 and EBS coregulate many root development-related genes. A series of biochemical analyses demonstrated that SUF4 directly binds to the promoter of SCARECROW (SCR), which encodes a key regulator of root development. Chromatin immunoprecipitation assay indicated that both SUF4 and EBS are recruited to the SCR locus in an interdependent manner to promote H3K4me3 levels and suppress H3K27me3 levels, thereby activating the expression of SCR. These findings improve our understanding of the function of SUF4 and EBS and provide insights into the molecular mechanism that couples a transcription factor and a histone methylation reader to modulate QC specification and root development in Arabidopsis.
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Affiliation(s)
- Can Huang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Diao Wang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Yanqi Yang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Hong Yang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Biaoming Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Haitao Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Haitao Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Yan Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Wenya Yuan
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
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2
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Rhein HS, Sreedasyam A, Cooke P, Velasco-Cruz C, Grimwood J, Schmutz J, Jenkins J, Kumar S, Song M, Heerema RJ, Grauke LJ, Randall JJ. Comparative transcriptome analyses reveal insights into catkin bloom patterns in pecan protogynous and protandrous cultivars. PLoS One 2023; 18:e0281805. [PMID: 36795673 PMCID: PMC9934368 DOI: 10.1371/journal.pone.0281805] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 02/01/2023] [Indexed: 02/17/2023] Open
Abstract
In perennial plants such as pecan, once reproductive maturity is attained, there are genetic switches that are regulated and required for flower development year after year. Pecan trees are heterodichogamous with both pistillate and staminate flowers produced on the same tree. Therefore, defining genes exclusively responsible for pistillate inflorescence and staminate inflorescence (catkin) initiation is challenging at best. To understand these genetic switches and their timing, this study analyzed catkin bloom and gene expression of lateral buds collected from a protogynous (Wichita) and a protandrous (Western) pecan cultivar in summer, autumn and spring. Our data showed that pistillate flowers in the current season on the same shoot negatively impacted catkin production on the protogynous 'Wichita' cultivar. Whereas fruit production the previous year on 'Wichita' had a positive effect on catkin production on the same shoot the following year. However, fruiting the previous year nor current year pistillate flower production had no significant effect on catkin production on 'Western' (protandrous cultivar) cultivar. The RNA-Seq results present more significant differences between the fruiting and non-fruiting shoots of the 'Wichita' cultivar compared to the 'Western' cultivar, revealing the genetic signals likely responsible for catkin production. Our data presented here, indicates the genes showing expression for the initiation of both types of flowers the season before bloom.
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Affiliation(s)
- Hormat Shadgou Rhein
- Molecular Biology Program, New Mexico State University, Las Cruces, New Mexico, United States of America
| | - Avinash Sreedasyam
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama, United States of America
| | - Peter Cooke
- Microscopy Core Facility, New Mexico State University, Las Cruces, New Mexico, United States of America
| | - Ciro Velasco-Cruz
- Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, New Mexico, United States of America
| | - Jane Grimwood
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama, United States of America
| | - Jeremy Schmutz
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama, United States of America
| | - Jerry Jenkins
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama, United States of America
| | - Sajal Kumar
- Department of Computer Science, New Mexico State University, Las Cruces, New Mexico, United States of America
| | - Mingzhou Song
- Department of Computer Science, New Mexico State University, Las Cruces, New Mexico, United States of America
| | - Richard J. Heerema
- Departments of Plant and Environmental Sciences and Extension Plant Sciences, Las Cruces, New Mexico, United States of America
| | - L. J. Grauke
- USDA ARS Pecan Breeding and Genetics, Somerville, Texas, United States of America
| | - Jennifer J. Randall
- Molecular Biology Program, New Mexico State University, Las Cruces, New Mexico, United States of America
- Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, New Mexico, United States of America
- * E-mail:
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3
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Xu S, Hou H, Wu Z, Zhao J, Zhang F, Teng R, Chen F, Teng N. Chrysanthemum embryo development is negatively affected by a novel ERF transcription factor, CmERF12. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:197-212. [PMID: 34453430 DOI: 10.1093/jxb/erab398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
Embryo abortion often occurs during distant hybridization events. Apetala 2/ethylene-responsive factor (AP2/ERF) proteins are key transcription factor (TF) regulators of plant development and stress resistance, but their roles in hybrid embryo development are poorly understood. In this study, we isolated a novel AP2/ERF TF, CmERF12, from chrysanthemum and show that it adversely affects embryo development during distant hybridization. Transcriptome and real-time quantitative PCR demonstrate that CmERF12 is expressed at significantly higher levels in aborted ovaries compared with normal ones. CmERF12 localizes to the cell nucleus and contains a conserved EAR motif that mediates its transcription repressor function in yeast and plant cells. We generated artificial microRNA (amiR) CmERF12 transgenic lines of Chrysanthemum morifolium var. 'Yuhualuoying' and conducted distant hybridization with the wild-type tetraploid, Chrysanthemum nankingense, and found that CmERF12-knock down significantly promoted embryo development and increased the seed-setting rates during hybridization. The expression of various genes related to embryo development was up-regulated in developing ovaries from the cross between female amiR-CmERF12 C. morifolium var. 'Yuhualuoying'× male C. nankingense. Furthermore, CmERF12 directly interacted with CmSUF4, which is known to affect flower development and embryogenesis, and significantly reduced its ability to activate its target gene CmEC1 (EGG CELL1). Our study provides a novel method to overcome barriers to distant hybridization in plants and reveals the mechanism by which CmERF12 negatively affects chrysanthemum embryo development.
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Affiliation(s)
- Sujuan Xu
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Nanjing Agricultural University-Nanjing Oriole Island Modern Agricultural Development Co., Ltd., Jiangsu Graduate Workstation/Nanjing Agricultural University, Baguazhou Modern Horticultural Industry Science and Technology Innovation Center, Nanjing 210043, China
| | - Huizhong Hou
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Nanjing Agricultural University-Nanjing Oriole Island Modern Agricultural Development Co., Ltd., Jiangsu Graduate Workstation/Nanjing Agricultural University, Baguazhou Modern Horticultural Industry Science and Technology Innovation Center, Nanjing 210043, China
| | - Ze Wu
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Nanjing Agricultural University-Nanjing Oriole Island Modern Agricultural Development Co., Ltd., Jiangsu Graduate Workstation/Nanjing Agricultural University, Baguazhou Modern Horticultural Industry Science and Technology Innovation Center, Nanjing 210043, China
| | - Jingya Zhao
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Fengjiao Zhang
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Renda Teng
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Nanjing Agricultural University-Nanjing Oriole Island Modern Agricultural Development Co., Ltd., Jiangsu Graduate Workstation/Nanjing Agricultural University, Baguazhou Modern Horticultural Industry Science and Technology Innovation Center, Nanjing 210043, China
| | - Fadi Chen
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Nianjun Teng
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Nanjing Agricultural University-Nanjing Oriole Island Modern Agricultural Development Co., Ltd., Jiangsu Graduate Workstation/Nanjing Agricultural University, Baguazhou Modern Horticultural Industry Science and Technology Innovation Center, Nanjing 210043, China
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4
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The Evolution and Expression Profiles of EC1 Gene Family during Development in Cotton. Genes (Basel) 2021; 12:genes12122001. [PMID: 34946950 PMCID: PMC8702097 DOI: 10.3390/genes12122001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 12/04/2022] Open
Abstract
Fertilization is essential to sexual reproduction of flowering plants. EC1 (EGG CELL 1) proteins have a conserved cysteine spacer characteristic and play a crucial role in double fertilization process in many plant species. However, to date, the role of EC1 gene family in cotton is fully unknown. Hence, detailed bioinformatics analysis was explored to elucidate the biological mechanisms of EC1 gene family in cotton. In this study, we identified 66 genes in 10 plant species in which a total of 39 EC1 genes were detected from cotton genome. Phylogenetic analysis clustered the identified EC1 genes into three families (I-III) and all of them contain Prolamin-like domains. A good collinearity was observed in the synteny analysis of the orthologs from cotton genomes. Whole-genome duplication was determined to be one of the major impetuses for the expansion of the EC1 gene family during the process of evolution. qRT-PCR analysis showed that EC1 genes were highly expressed in reproductive tissues under multiple stresses, signifying their potential role in enhancing stress tolerance or responses. Additionally, gene interaction networks showed that EC1 genes may be involved in cell stress and response transcriptional regulator in the synergid cells and activate the expression of genes required for pollen tube guidance. Our results provide novel functional insights into the evolution and functional elucidation of EC1 gene family in cotton.
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5
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Li J, Zhang L, Yuan Y, Wang Q, Elbaiomy RG, Zhou W, Wu H, Soaud SA, Abbas M, Chen B, Zhao D, El-Sappah AH. In Silico Functional Prediction and Expression Analysis of C2H2 Zinc-Finger Family Transcription Factor Revealed Regulatory Role of ZmZFP126 in Maize Growth. Front Genet 2021; 12:770427. [PMID: 34804129 PMCID: PMC8602080 DOI: 10.3389/fgene.2021.770427] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 10/21/2021] [Indexed: 11/16/2022] Open
Abstract
The C2H2-zinc finger proteins (ZFP) comprise a large family of transcription factors with various functions in biological processes. In maize, the function regulation of C2H2- zine finger (ZF) genes are poorly understood. We conducted an evolution analysis and functional prediction of the maize C2H2-ZF gene family. Furthermore, the ZmZFP126 gene has been cloned and sequenced for further favorable allelic variation discovery. The phylogenetic analysis of the C2H2-ZF domain indicated that the position and sequence of the C2H2-ZF domain of the poly-zinc finger gene are relatively conserved during evolution, and the C2H2-ZF domain with the same position is highly conserved. The expression analysis of the C2H2-ZF gene family in 11 tissues at different growth stages of B73 inbred lines showed that genes with multiple transcripts were endowed with more functions. The expression analysis of the C2H2-ZF gene in P1 and P2 inbred lines under drought conditions showed that the C2H2-ZF genes were mainly subjected to negative regulation under drought stress. Functional prediction indicated that the maize C2H2-ZF gene is mainly involved in reproduction and development, especially concerning the formation of important agronomic traits in maize yield. Furthermore, sequencing and correlation analysis of the ZmZFP126 gene indicated that this gene was significantly associated with the SDW-NAP and TDW-NAP. The analysis of the relationship between maize C2H2-ZF genes and C2H2-ZF genes with known functions indicated that the functions of some C2H2-ZF genes are relatively conservative, and the functions of homologous genes in different species are similar.
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Affiliation(s)
- Jia Li
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Litian Zhang
- State Key Laboratory of Plateau Ecology and Agriculture, Academy of Animal Science and Veterinary Medicine of Qinghai University, Xining, China
| | - Yibing Yuan
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, Chengdu, China
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
| | - Qi Wang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, Chengdu, China
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
| | | | - Wanhai Zhou
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Hui Wu
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Salma A. Soaud
- Genetics Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Manzar Abbas
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Bo Chen
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Deming Zhao
- Yibin Academy of Agricultural Sciences, Yibin, China
| | - Ahmed H. El-Sappah
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Genetics Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
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6
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Kim MJ, Jeon BW, Oh E, Seo PJ, Kim J. Peptide Signaling during Plant Reproduction. TRENDS IN PLANT SCIENCE 2021; 26:822-835. [PMID: 33715959 DOI: 10.1016/j.tplants.2021.02.008] [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: 10/04/2020] [Revised: 02/02/2021] [Accepted: 02/17/2021] [Indexed: 05/08/2023]
Abstract
Plant signaling peptides are involved in cell-cell communication networks and coordinate a wide range of plant growth and developmental processes. Signaling peptides generally bind to receptor-like kinases, inducing their dimerization with co-receptors for signaling activation to trigger cellular signaling and biological responses. Fertilization is an important life event in flowering plants, involving precise control of cell-cell communications between male and female tissues. Peptide-receptor-like kinase-mediated signaling plays an important role in male-female interactions for successful fertilization in flowering plants. Here, we describe the recent findings on the functions and signaling pathways of peptides and receptors involved in plant reproduction processes including pollen germination, pollen tube growth, pollen tube guidance to the embryo sac, and sperm cell reception in female tissues.
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Affiliation(s)
- Min-Jung Kim
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 61186, Korea; Department of Integrative Food, Bioscience, and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Byeong Wook Jeon
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 61186, Korea; Department of Integrative Food, Bioscience, and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Eunkyoo Oh
- Department of Life Sciences, Korea University, Seoul 02841, Korea
| | - Pil Joon Seo
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Jungmook Kim
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 61186, Korea; Department of Integrative Food, Bioscience, and Technology, Chonnam National University, Gwangju 61186, Korea; Kumho Life Science Laboratory, Chonnam National University, Buk-Gu, Gwangju 61186, Korea.
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7
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Forlani S, Cozzi C, Rosa S, Tadini L, Masiero S, Mizzotti C. HEBE, a novel positive regulator of senescence in Solanum lycopersicum. Sci Rep 2020; 10:11021. [PMID: 32620827 PMCID: PMC7335192 DOI: 10.1038/s41598-020-67937-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 06/11/2020] [Indexed: 11/29/2022] Open
Abstract
Leaf senescence and plant aging are traits of great interest for breeders. Senescing cells undergo important physiological and biochemical changes, while cellular structures such as chloroplasts are degraded with dramatic metabolic consequences for the whole plant. The possibility of prolonging the photosynthetic ability of leaves could positively impact the plant's life span with benefits for biomass production and metabolite accumulation; plants with these characteristics display a stay-green phenotype. A group of plant transcription factors known as NAC play a pivotal role in controlling senescence: here we describe the involvement of the tomato NAC transcription factor Solyc12g036480, which transcript is present in leaves and floral buds. Since its silencing delays leaf senescence and prevents plants from ageing, we renamed Solyc12g0364 HḖBĒ, for the Greek goddess of youth. In this manuscript we describe how HEB downregulation negatively affects the progression of senescence, resulting in changes in transcription of senescence-promoting genes, as well as the activity of enzymes involved in chlorophyll degradation, thereby explaining the stay-green phenotype.
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Affiliation(s)
- Sara Forlani
- Department of Biosciences, Università degli Studi di Milano, Via Celoria 26, 20133, Milan, Italy
| | - Carolina Cozzi
- Department of Biosciences, Università degli Studi di Milano, Via Celoria 26, 20133, Milan, Italy
| | - Stefano Rosa
- Department of Biosciences, Università degli Studi di Milano, Via Celoria 26, 20133, Milan, Italy
| | - Luca Tadini
- Department of Biosciences, Università degli Studi di Milano, Via Celoria 26, 20133, Milan, Italy
| | - Simona Masiero
- Department of Biosciences, Università degli Studi di Milano, Via Celoria 26, 20133, Milan, Italy.
| | - Chiara Mizzotti
- Department of Biosciences, Università degli Studi di Milano, Via Celoria 26, 20133, Milan, Italy.
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8
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Sprunck S. Twice the fun, double the trouble: gamete interactions in flowering plants. CURRENT OPINION IN PLANT BIOLOGY 2020; 53:106-116. [PMID: 31841779 DOI: 10.1016/j.pbi.2019.11.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/14/2019] [Accepted: 11/17/2019] [Indexed: 05/13/2023]
Abstract
During sexual reproduction two gametes of opposite sex unite to produce a zygote. Gamete fusion is a highly controlled process and it has become evident that, across species, common concepts apply to this ancient and fundamental event. Sexual reproduction in flowering plants is even more complex in that two sperm cells fertilize two female reproductive cells (egg and central cell) in a process called double fertilization. Due to the coordinated developmental progression and mutual dependency of the two fertilization products (embryo and endosperm), the success and timing of the two fusion events substantially affects seed set. So far, four proteins are known to act on the surfaces of Arabidopsis gametes to accomplish double fertilization. The molecular and evolutionary characteristics of these players prove that flowering plants integrate plant-specific and widely conserved mechanisms to accomplish the timely fusion of each sperm cell with one female reproductive cell.
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Affiliation(s)
- Stefanie Sprunck
- Cell Biology and Plant Biochemistry, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany.
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9
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Pinto SC, Mendes MA, Coimbra S, Tucker MR. Revisiting the Female Germline and Its Expanding Toolbox. TRENDS IN PLANT SCIENCE 2019; 24:455-467. [PMID: 30850278 DOI: 10.1016/j.tplants.2019.02.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 01/28/2019] [Accepted: 02/04/2019] [Indexed: 05/27/2023]
Abstract
The Arabidopsis thaliana ovule arises as a female reproductive organ composed solely of somatic diploid cells. Among them, one cell will acquire a unique identity and initiate female germline development. In this review we explore the complex network that facilitates differentiation of this single cell, and consider how it becomes committed to a distinct developmental program. We highlight recent progress towards understanding the role of intercellular communication, cell competency, and cell-cycle regulation in the ovule primordium, and we discuss the possibility that distinct pathways restrict germline development at different stages. Importantly, these recent findings suggest a renaissance in plant ovule research, restoring the female germline as an attractive model to study cell communication and cell fate establishment in multicellular organs.
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Affiliation(s)
- Sara C Pinto
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal; GreenUPorto, Sustainable AgriFood Production Research Centre, Rua da Agrária 747, 4485-646 Vairão, Portugal
| | - Marta A Mendes
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy
| | - Sílvia Coimbra
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal; GreenUPorto, Sustainable AgriFood Production Research Centre, Rua da Agrária 747, 4485-646 Vairão, Portugal
| | - Matthew R Tucker
- School of Agriculture, Food, and Wine, The University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia.
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10
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Cyprys P, Lindemeier M, Sprunck S. Gamete fusion is facilitated by two sperm cell-expressed DUF679 membrane proteins. NATURE PLANTS 2019; 5:253-257. [PMID: 30850817 DOI: 10.1038/s41477-019-0382-3] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 02/06/2019] [Indexed: 05/02/2023]
Abstract
Successful double fertilization in flowering plants relies on two coordinated gamete fusion events, but the underlying molecular processes are not well understood. We show that two sperm-specific DOMAIN OF UNKNOWN FUNCTION 679 membrane proteins (DMP8 and DMP9) facilitate gamete fusion, with a greater effect on sperm-egg fusion than on sperm-central cell fusion. We also show that sperm adhesion and sperm cell separation depend on egg cell-secreted EGG CELL 1 proteins.
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Affiliation(s)
- Philipp Cyprys
- Cell Biology and Plant Biochemistry, Biochemistry Centre Regensburg, University of Regensburg, Regensburg, Germany
| | - Maria Lindemeier
- Cell Biology and Plant Biochemistry, Biochemistry Centre Regensburg, University of Regensburg, Regensburg, Germany
| | - Stefanie Sprunck
- Cell Biology and Plant Biochemistry, Biochemistry Centre Regensburg, University of Regensburg, Regensburg, Germany.
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11
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Flores-Tornero M, Proost S, Mutwil M, Scutt CP, Dresselhaus T, Sprunck S. Transcriptomics of manually isolated Amborella trichopoda egg apparatus cells. PLANT REPRODUCTION 2019; 32:15-27. [PMID: 30707279 DOI: 10.1007/s00497-019-00361-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 01/09/2019] [Indexed: 05/27/2023]
Abstract
A protocol for the isolation of egg apparatus cells from the basal angiosperm Amborella trichopoda to generate RNA-seq data for evolutionary studies of fertilization-associated genes. Sexual reproduction is particularly complex in flowering plants (angiosperms). Studies in eudicot and monocot model species have significantly contributed to our knowledge on cell fate specification of gametophytic cells and on the numerous cellular communication events necessary to deliver the two sperm cells into the embryo sac and to accomplish double fertilization. However, for a deeper understanding of the evolution of these processes, morphological, genomic and gene expression studies in extant basal angiosperms are inevitable. The basal angiosperm Amborella trichopoda is of special importance for evolutionary studies, as it is likely sister to all other living angiosperms. Here, we report about a method to isolate Amborella egg apparatus cells and on genome-wide gene expression profiles in these cells. Our transcriptomics data revealed Amborella-specific genes and genes conserved in eudicots and monocots. Gene products include secreted proteins, such as small cysteine-rich proteins previously reported to act as extracellular signaling molecules with important roles during double fertilization. The detection of transcripts encoding EGG CELL 1 (EC1) and related prolamin-like family proteins in Amborella egg cells demonstrates the potential of the generated data set to study conserved molecular mechanisms and the evolution of fertilization-related genes and their encoded proteins.
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Affiliation(s)
- María Flores-Tornero
- Cell Biology and Plant Biochemistry, Biochemie-Zentrum Regensburg, University of Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Sebastian Proost
- Max-Planck Institute for Molecular Plant Physiology, Am Muehlenberg 1, 14476, Potsdam, Germany
- Laboratory of Molecular Bacteriology (Rega Institute), KU Leuven, Louvain, Belgium
| | - Marek Mutwil
- Max-Planck Institute for Molecular Plant Physiology, Am Muehlenberg 1, 14476, Potsdam, Germany
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551, Singapore
| | - Charles P Scutt
- Laboratoire Reproduction et Développement des Plantes, École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, CNRS, INRA, Université de Lyon, Lyon, France
| | - Thomas Dresselhaus
- Cell Biology and Plant Biochemistry, Biochemie-Zentrum Regensburg, University of Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Stefanie Sprunck
- Cell Biology and Plant Biochemistry, Biochemie-Zentrum Regensburg, University of Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany.
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12
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Caselli F, Beretta VM, Mantegazza O, Petrella R, Leo G, Guazzotti A, Herrera-Ubaldo H, de Folter S, Mendes MA, Kater MM, Gregis V. REM34 and REM35 Control Female and Male Gametophyte Development in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2019; 10:1351. [PMID: 31708954 PMCID: PMC6821719 DOI: 10.3389/fpls.2019.01351] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 10/01/2019] [Indexed: 05/13/2023]
Abstract
The REproductive Meristem (REM) gene family encodes for transcription factors belonging to the B3 DNA binding domain superfamily. In Arabidopsis thaliana, the REM gene family is composed of 45 members, preferentially expressed during flower, ovule, and seed developments. Only a few members of this family have been functionally characterized: VERNALIZATION1 (VRN1) and, most recently, TARGET OF FLC AND SVP1 (TFS1) regulate flowering time and VERDANDI (VDD), together with VALKYRIE (VAL) that control the death of the receptive synergid cell in the female gametophyte. We investigated the role of REM34, REM35, and REM36, three closely related and linked genes similarly expressed in both female and male gametophytes. Simultaneous silencing by RNA interference (RNAi) caused about 50% of the ovules to remain unfertilized. Careful evaluation of both ovule and pollen developments showed that this partial sterility of the transgenic RNAi lines was due to a postmeiotic block in both female and male gametophytes. Furthermore, protein interaction assays revealed that REM34 and REM35 interact, which suggests that they work together during the first stages of gametogenesis.
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Affiliation(s)
- Francesca Caselli
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
| | | | - Otho Mantegazza
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
| | - Rosanna Petrella
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
| | - Giulia Leo
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
| | - Andrea Guazzotti
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
| | - Humberto Herrera-Ubaldo
- Laboratorio Nacional de Genómica para la Biodiversidad, Unidad de Genómica Avanzada, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Irapuato, Mexico
| | - Stefan de Folter
- Laboratorio Nacional de Genómica para la Biodiversidad, Unidad de Genómica Avanzada, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Irapuato, Mexico
| | | | - Martin M. Kater
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
| | - Veronica Gregis
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
- *Correspondence: Veronica Gregis,
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13
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Mizzotti C, Rotasperti L, Moretto M, Tadini L, Resentini F, Galliani BM, Galbiati M, Engelen K, Pesaresi P, Masiero S. Time-Course Transcriptome Analysis of Arabidopsis Siliques Discloses Genes Essential for Fruit Development and Maturation. PLANT PHYSIOLOGY 2018; 178:1249-1268. [PMID: 30275057 PMCID: PMC6236619 DOI: 10.1104/pp.18.00727] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 09/16/2018] [Indexed: 05/26/2023]
Abstract
Fruits protect the developing seeds of angiosperms and actively contribute to seed dispersion. Furthermore, fruit and seed development are highly synchronized and require exchange of information between the mother plant and the developing generations. To explore the mechanisms controlling fruit formation and maturation, we performed a transcriptomic analysis on the valve tissue of the Arabidopsis (Arabidopsis thaliana) silique using RNA sequencing. In doing so, we have generated a data set of differentially regulated genes that will help to elucidate the molecular mechanisms that underpin the initial phase of fruit growth and, subsequently, trigger fruit maturation. The robustness of our data set has been tested by functional genomic studies. Using a reverse genetics approach, we selected 10 differentially expressed genes and explored the consequences of their disruption for both silique growth and senescence. We found that genes contained in our data set play essential roles in different stages of silique development and maturation, indicating that our transcriptome-based gene list is a powerful tool for the elucidation of the molecular mechanisms controlling fruit formation in Arabidopsis.
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Affiliation(s)
- Chiara Mizzotti
- Department of Biosciences, Università degli Studi di Milano, 20133 Milan, Italy
| | - Lisa Rotasperti
- Department of Biosciences, Università degli Studi di Milano, 20133 Milan, Italy
| | - Marco Moretto
- Computational Biology Unit, Fondazione E. Mach, 38010 S. Michele all'Adige, Trentino, Italy
| | - Luca Tadini
- Department of Biosciences, Università degli Studi di Milano, 20133 Milan, Italy
| | - Francesca Resentini
- Department of Biosciences, Università degli Studi di Milano, 20133 Milan, Italy
| | - Bianca M Galliani
- Department of Biosciences, Università degli Studi di Milano, 20133 Milan, Italy
| | - Massimo Galbiati
- Department of Biosciences, Università degli Studi di Milano, 20133 Milan, Italy
| | - Kristof Engelen
- Computational Biology Unit, Fondazione E. Mach, 38010 S. Michele all'Adige, Trentino, Italy
| | - Paolo Pesaresi
- Department of Agricultural and Environmental Sciences-Production, Landscape, Agroenergy, Università degli Studi di Milano, 20133 Milan, Italy
| | - Simona Masiero
- Department of Biosciences, Università degli Studi di Milano, 20133 Milan, Italy
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14
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Tadini L, Ferrari R, Lehniger MK, Mizzotti C, Moratti F, Resentini F, Colombo M, Costa A, Masiero S, Pesaresi P. Trans-splicing of plastid rps12 transcripts, mediated by AtPPR4, is essential for embryo patterning in Arabidopsis thaliana. PLANTA 2018; 248:257-265. [PMID: 29687222 DOI: 10.1007/s00425-018-2896-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 04/17/2018] [Indexed: 05/21/2023]
Abstract
AtPPR4-mediated trans-splicing of plastid rps12 transcripts is essential for key embryo morphogenetic events such as development of cotyledons, determination of provascular tissue, and organization of the shoot apical meristem (SAM), but not for the formation of the protodermal layer. Members of the pentatricopeptide repeat (PPR) containing protein family have emerged as key regulators of the organelle post-transcriptional processing and to be essential for proper plant embryo development. In this study, we report the functional characterization of the AtPPR4 (At5g04810) gene encoding a plastid nucleoid PPR protein. In-situ hybridization analysis reveals the presence of AtPPR4 transcripts already at the transition stage of embryo development. As a consequence, embryos lacking the AtPPR4 protein arrest their development at the transition/early-heart stages and show defects in the determination of the provascular tissue and organization of SAM. This complex phenotype is due to the specific role of AtPPR4 in the trans-splicing of the plastid rps12 transcripts, as shown by northern and slot-blot hybridizations, and the consequent defect in 70S ribosome accumulation and plastid protein synthesis, in agreement with the role proposed for the maize orthologue, ZmPPR4.
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Affiliation(s)
- Luca Tadini
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
| | - Roberto Ferrari
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
| | - Marie-Kristin Lehniger
- Molecular Genetics, Institute of Biology, Humboldt University of Berlin, Berlin, Germany
| | - Chiara Mizzotti
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
| | - Fabio Moratti
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, Germany
| | - Francesca Resentini
- Instituto de Biologıa Molecular y Celular de Plantas (CSIC-Universidad Politécnica de Valencia), Valencia, Spain
| | - Monica Colombo
- Centro Ricerca e Innovazione, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Alex Costa
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
| | - Simona Masiero
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy.
| | - Paolo Pesaresi
- Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio, Agroenergia, Università degli studi di Milano, Milan, Italy.
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15
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Abstract
The haploid female gametophyte (embryo sac) is an essential reproductive unit of flowering plants, usually comprising four specialized cell types, including the female gametes (egg cell and central cell). The differentiation of these cells relies on spatial signals which pattern the gametophyte along a proximal-distal axis, but the molecular and genetic mechanisms by which cell identities are determined in the embryo sac have long been a mystery. Recent identification of key genes for cell fate specification and their relationship to hormonal signaling pathways that act on positional cues has provided new insights into these processes. A model for differentiation can be devised with egg cell fate as a default state of the female gametophyte and with other cell types specified by the action of spatially regulated factors. Cell-to-cell communication within the gametophyte is also important for maintaining cell identity as well as facilitating fertilization of the female gametes by the male gametes (sperm cells).
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Affiliation(s)
- Debra J Skinner
- Department of Plant Biology, University of California-Davis, Davis, USA
| | - Venkatesan Sundaresan
- Department of Plant Biology, University of California-Davis, Davis, USA.,Department of Plant Sciences, University of California-Davis, Davis, USA
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16
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Movahedi A, Zhang J, Sun W, Mohammadi K, Almasi Zadeh Yaghuti A, Wei H, Wu X, Yin T, Zhuge Q. Functional analyses of PtRDM1 gene overexpression in poplars and evaluation of its effect on DNA methylation and response to salt stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 127:64-73. [PMID: 29549759 DOI: 10.1016/j.plaphy.2018.03.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/20/2018] [Accepted: 03/09/2018] [Indexed: 05/27/2023]
Abstract
Epigenetic modification by DNA methylation is necessary for all cellular processes, including genetic expression events, DNA repair, genomic imprinting and regulation of tissue development. It occurs almost exclusively at the C5 position of symmetric CpG and asymmetric CpHpG and CpHpH sites in genomic DNA. The RNA-directed DNA methylation (RDM1) gene is crucial for heterochromatin and DNA methylation. We overexpressed PtRDM1 gene from Populus trichocarpa to amplify transcripts of orthologous RDM1 in 'Nanlin895' (P. deltoides × P. euramericana 'Nanlin895'). This overexpression resulted in increasing RDM1 transcript levels: by ∼150% at 0 mM NaCl treatment and by ∼300% at 60 mM NaCl treatment compared to WT (control) poplars. Genomic cytosine methylation was monitored within 5.8S rDNA and histone H3 loci by bisulfite sequencing. In total, transgenic poplars revealed more DNA methylation than WT plants. In our results, roots revealed more methylated CG contexts than stems and leaves whereas, histone H3 presented more DNA methylation than 5.8S rDNA in both WT and transgenic poplars. The NaCl stresses enhanced more DNA methylation in transgenic poplars than WT plants through histone H3 and 5.8 rDNA loci. Also, the overexpression of PtRDM1 resulted in hyper-methylation, which affected plant phenotype. Transgenic poplars revealed significantly more regeneration of roots than WT poplars via NaCl treatments. Our results proved that RDM1 protein enhanced the DNA methylation by chromatin remodeling (e.g. histone H3) more than repetitive DNA sequences (e.g. 5.8S rDNA).
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Affiliation(s)
- Ali Movahedi
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing, 210037, China; Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Jiaxin Zhang
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing, 210037, China; Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Weibo Sun
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing, 210037, China
| | - Kourosh Mohammadi
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing, 210037, China
| | - Amir Almasi Zadeh Yaghuti
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing, 210037, China
| | - Hui Wei
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing, 210037, China
| | - Xiaolong Wu
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing, 210037, China
| | - Tongming Yin
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Qiang Zhuge
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing, 210037, China.
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17
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Amasino RM, Cheung AY, Dresselhaus T, Kuhlemeier C. Focus on Flowering and Reproduction. PLANT PHYSIOLOGY 2017; 173:1-4. [PMID: 28049854 PMCID: PMC5210767 DOI: 10.1104/pp.16.01867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- Richard M Amasino
- Guest Editor
- Department of Biochemistry, University of Wisconsin, Madison, Wisconsin 53706
| | - Alice Y Cheung
- Associate Editor
- Department of Biochemistry and Molecular Biology, University of Massachusetts, Amherst, Massachusetts 01003
| | - Thomas Dresselhaus
- Guest Editor
- Cell Biology and Plant Biochemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Cris Kuhlemeier
- Monitoring Editor
- Institute of Plant Sciences, University of Bern, 3013 Bern, Switzerland
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