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Zhao J, Xu Y, Zhang Z, Zhao M, Li K, Wang F, Sun K. Genome-wide analysis of the MADS-box gene family of sea buckthorn ( Hippophae rhamnoides ssp. sinensis) and their potential role in floral organ development. FRONTIERS IN PLANT SCIENCE 2024; 15:1387613. [PMID: 38938643 PMCID: PMC11208494 DOI: 10.3389/fpls.2024.1387613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 05/21/2024] [Indexed: 06/29/2024]
Abstract
Sea buckthorn (Hippophae rhamnoides ssp. sinensis) is a deciduous shrub or small tree in the Elaeagnaceae family. It is dioecious, featuring distinct structures in female and male flowers. The MADS-box gene family plays a crucial role in flower development and differentiation of floral organs in plants. However, systematic information on the MADS-box family in sea buckthorn is currently lacking. This study presents a genome-wide survey and expression profile of the MADS-box family of sea buckthorn. We identified 92 MADS-box genes in the H. rhamnoides ssp. Sinensis genome. These genes are distributed across 12 chromosomes and classified into Type I (42 genes) and Type II (50 genes). Based on the FPKM values in the transcriptome data, the expression profiles of HrMADS genes in male and female flowers of sea buckthorn showed that most Type II genes had higher expression levels than Type I genes. This suggesting that Type II HrMADS may play a more significant role in sea buckthorn flower development. Using the phylogenetic relationship between sea buckthorn and Arabidopsis thaliana, the ABCDE model genes of sea buckthorn were identified and some ABCDE model-related genes were selected for qRT-PCR analysis in sea buckthorn flowers and floral organs. Four B-type genes may be involved in the identity determination of floral organs in male flowers, and D-type genes may be involved in pistil development. It is hypothesized that ABCDE model genes may play an important role in the identity of sea buckthorn floral organs. This study analyzed the role of MADS-box gene family in the development of flower organs in sea buckthorn, which provides an important theoretical basis for understanding the regulatory mechanism of sex differentiation in sea buckthorn.
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Affiliation(s)
| | | | | | | | | | | | - Kun Sun
- College of Life Science, Northwest Normal University, Lanzhou, China
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2
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Gramzow L, Sharma R, Theißen G. Evolutionary Dynamics of FLC-like MADS-Box Genes in Brassicaceae. PLANTS (BASEL, SWITZERLAND) 2023; 12:3281. [PMID: 37765445 PMCID: PMC10536770 DOI: 10.3390/plants12183281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/06/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023]
Abstract
MADS-box genes encode transcription factors that play important roles in the development and evolution of plants. There are more than a dozen clades of MADS-box genes in angiosperms, of which those with functions in the specification of floral organ identity are especially well-known. From what has been elucidated in the model plant Arabidopsis thaliana, the clade of FLC-like MADS-box genes, comprising FLC-like genes sensu strictu and MAF-like genes, are somewhat special among the MADS-box genes of plants since FLC-like genes, especially MAF-like genes, show unusual evolutionary dynamics, in that they generate clusters of tandemly duplicated genes. Here, we make use of the latest genomic data of Brassicaceae to study this remarkable feature of the FLC-like genes in a phylogenetic context. We have identified all FLC-like genes in the genomes of 29 species of Brassicaceae and reconstructed the phylogeny of these genes employing a Maximum Likelihood method. In addition, we conducted selection analyses using PAML. Our results reveal that there are three major clades of FLC-like genes in Brassicaceae that all evolve under purifying selection but with remarkably different strengths. We confirm that the tandem arrangement of MAF-like genes in the genomes of Brassicaceae resulted in a high rate of duplications and losses. Interestingly, MAF-like genes also seem to be prone to transposition. Considering the role of FLC-like genes sensu lato (s.l.) in the timing of floral transition, we hypothesize that this rapid evolution of the MAF-like genes was a main contributor to the successful adaptation of Brassicaceae to different environments.
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Affiliation(s)
- Lydia Gramzow
- Matthias Schleiden Institute/Genetics, Friedrich Schiller University Jena, 07743 Jena, Germany
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3
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Luan J, Ju J, Li X, Wang X, Tan Y, Xia G. Functional identification of moss PpGATA1 provides insights into the evolution of LLM-domain B-GATA transcription factors in plants. Gene 2023; 855:147103. [PMID: 36513191 DOI: 10.1016/j.gene.2022.147103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/28/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022]
Abstract
B-GATA transcription factors with the LLM domain (LLM-domain B-GATAs) play important roles in developmental processes and environmental responses in flowering plants. Their characterization can therefore provide insights into the structural and functional evolution of functional gene families. Phylogenetic and sequence analysis suggests that LLM-domain B-GATAs evolved from ancestral GATA transcription factors before the divergence of chlorophyte algae and Streptophyta. We compared the function of PpGATA1, a LLM-domain B-GATA gene in moss Physcomitrium patens, with Arabidopsis thaliana counterparts and showed that, in P. patens, PpGATA1 controls growth and greening in haploid gametophytes, while in transgenic Arabidopsis it affects germination, leaf development, flowering time, greening and light responses in diploid sporophytes. These PpGATA1 functions are similar to those of Arabidopsis counterparts, AtGNC, AtGNL and AtGATA17. PpGATA1 was able to complement the role of GNC and GNL in a gnc gnl double mutant, and the LLM domains of PpGATA1 and GNC behaved similarly. The functions of LLM-domain B-GATAs regulating hypocotyl elongation and cotyledon epinasty in flowering plants pre-exist before the divergence of mosses and the lineage leading to flowering plants. This study sheds light on adaption of PpGATA1 and its homologs to new developmental designs during the evolution.
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Affiliation(s)
- Ji Luan
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, Shandong University, Qingdao, Shandong 266237, China; The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, Shandong 266237, China.
| | - Jianfang Ju
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, Shandong 266237, China
| | - Xiaochen Li
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, Shandong University, Qingdao, Shandong 266237, China
| | - Xiuling Wang
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, Shandong University, Qingdao, Shandong 266237, China
| | - Yufei Tan
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, Shandong University, Qingdao, Shandong 266237, China
| | - Guangmin Xia
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, Shandong 266237, China.
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4
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Xie XJ, He XH, Yu HX, Fan ZY, Liu Y, Mo X, Xia LM, Zhu JW, Zhang YL, Luo C. Ectopic expression of two CAULIFLOWER genes from mango caused early flowering in Arabidopsis. Gene 2023; 851:146931. [DOI: 10.1016/j.gene.2022.146931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 09/11/2022] [Accepted: 09/26/2022] [Indexed: 11/06/2022]
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5
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Exploring the Molecular Mechanism of Sepal Formation in the Decorative Flowers of Hydrangea macrophylla 'Endless Summer' Based on the ABCDE Model. Int J Mol Sci 2022; 23:ijms232214112. [PMID: 36430589 PMCID: PMC9694991 DOI: 10.3390/ijms232214112] [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: 10/03/2022] [Revised: 11/06/2022] [Accepted: 11/10/2022] [Indexed: 11/17/2022] Open
Abstract
With its large inflorescences and colorful flowers, Hydrangea macrophylla has been one of the most popular ornamental plants in recent years. However, the formation mechanism of its major ornamental part, the decorative floret sepals, is still not clear. In this study, we compared the transcriptome data of H. macrophylla 'Endless Summer' from the nutritional stage (BS1) to the blooming stage (BS5) and annotated them into the Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) databases. The 347 identified differentially expressed genes (DEGs) associated with flower development were subjected to a trend analysis and a protein-protein interaction analysis. The combined analysis of the two yielded 60 DEGs, including four MADS-box transcription factors (HmSVP-1, HmSOC1, HmAP1-2, and HmAGL24-3) and genes with strong connectivity (HmLFY and HmUFO). In addition, 17 transcription factors related to the ABCDE model were screened, and key candidate genes related to the development of decorative floret sepals in H. macrophylla were identified by phylogenetic and expression pattern analysis, including HmAP1-1, HmAP1-2, HmAP1-3, HmAP2-3, HmAP2-4, and HmAP2-5. On this basis, a gene regulatory network model of decorative sepal development was also postulated. Our results provide a theoretical basis for the study of the formation mechanism of decorative floret sepals and suggest a new direction for the molecular breeding of H. macrophylla.
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Marchant DB, Chen G, Cai S, Chen F, Schafran P, Jenkins J, Shu S, Plott C, Webber J, Lovell JT, He G, Sandor L, Williams M, Rajasekar S, Healey A, Barry K, Zhang Y, Sessa E, Dhakal RR, Wolf PG, Harkess A, Li FW, Rössner C, Becker A, Gramzow L, Xue D, Wu Y, Tong T, Wang Y, Dai F, Hua S, Wang H, Xu S, Xu F, Duan H, Theißen G, McKain MR, Li Z, McKibben MTW, Barker MS, Schmitz RJ, Stevenson DW, Zumajo-Cardona C, Ambrose BA, Leebens-Mack JH, Grimwood J, Schmutz J, Soltis PS, Soltis DE, Chen ZH. Dynamic genome evolution in a model fern. NATURE PLANTS 2022; 8:1038-1051. [PMID: 36050461 PMCID: PMC9477723 DOI: 10.1038/s41477-022-01226-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 07/15/2022] [Indexed: 05/31/2023]
Abstract
The large size and complexity of most fern genomes have hampered efforts to elucidate fundamental aspects of fern biology and land plant evolution through genome-enabled research. Here we present a chromosomal genome assembly and associated methylome, transcriptome and metabolome analyses for the model fern species Ceratopteris richardii. The assembly reveals a history of remarkably dynamic genome evolution including rapid changes in genome content and structure following the most recent whole-genome duplication approximately 60 million years ago. These changes include massive gene loss, rampant tandem duplications and multiple horizontal gene transfers from bacteria, contributing to the diversification of defence-related gene families. The insertion of transposable elements into introns has led to the large size of the Ceratopteris genome and to exceptionally long genes relative to other plants. Gene family analyses indicate that genes directing seed development were co-opted from those controlling the development of fern sporangia, providing insights into seed plant evolution. Our findings and annotated genome assembly extend the utility of Ceratopteris as a model for investigating and teaching plant biology.
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Affiliation(s)
| | - Guang Chen
- Central Laboratory, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- College of Agriculture, Yangtze University, Jingzhou, China
| | - Shengguan Cai
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- School of Science, Western Sydney University, Penrith, New South Wales, Australia
| | - Fei Chen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | | | - Jerry Jenkins
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - Shengqiang Shu
- United States Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Chris Plott
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - Jenell Webber
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - John T Lovell
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
- United States Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Guifen He
- United States Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Laura Sandor
- United States Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Melissa Williams
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - Shanmugam Rajasekar
- Arizona Genomics Institute, School of Plant Sciences, University of Arizona, Tucson, AZ, USA
| | - Adam Healey
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - Kerrie Barry
- United States Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Yinwen Zhang
- Institute of Bioinformatics, University of Georgia, Athens, GA, USA
| | - Emily Sessa
- Department of Biology, University of Florida, Gainesville, FL, USA
| | - Rijan R Dhakal
- Department of Biological Sciences, University of Alabama in Huntsville, Huntsville, AL, USA
| | - Paul G Wolf
- Department of Biological Sciences, University of Alabama in Huntsville, Huntsville, AL, USA
| | - Alex Harkess
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
- Department of Crop, Soil, and Environmental Sciences, Auburn University, Auburn, AL, USA
| | - Fay-Wei Li
- Boyce Thompson Institute, Ithaca, NY, USA
- Plant Biology Section, Cornell University, Ithaca, NY, USA
| | - Clemens Rössner
- Justus-Liebig-University, Department of Biology and Chemistry, Institute of Botany, Gießen, Germany
| | - Annette Becker
- Justus-Liebig-University, Department of Biology and Chemistry, Institute of Botany, Gießen, Germany
| | - Lydia Gramzow
- Matthias Schleiden Institute/Genetics, Friedrich Schiller University Jena, Jena, Germany
| | - Dawei Xue
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Yuhuan Wu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Tao Tong
- College of Agriculture, Yangtze University, Jingzhou, China
| | - Yuanyuan Wang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Fei Dai
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Shuijin Hua
- Institute of Crops and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Hua Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Shengchun Xu
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Fei Xu
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Honglang Duan
- Institute for Forest Resources & Environment of Guizhou, Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, College of Forestry, Guizhou University, Guiyang, China
| | - Günter Theißen
- Matthias Schleiden Institute/Genetics, Friedrich Schiller University Jena, Jena, Germany
| | - Michael R McKain
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, USA
| | - Zheng Li
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA
| | - Michael T W McKibben
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, USA
| | - Michael S Barker
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, USA
| | | | | | | | | | | | - Jane Grimwood
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - Jeremy Schmutz
- Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
- United States Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Pamela S Soltis
- Florida Museum of Natural History, University of Florida, Gainesville, FL, USA.
| | - Douglas E Soltis
- Department of Biology, University of Florida, Gainesville, FL, USA.
- Florida Museum of Natural History, University of Florida, Gainesville, FL, USA.
| | - Zhong-Hua Chen
- School of Science, Western Sydney University, Penrith, New South Wales, Australia.
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia.
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Abstract
BACKGROUND The LEAFY (LFY) transcription factors are present in algae and across land plants. The available expression and functional data of these genes in embryophytes suggest that LFY genes control a plethora of processes including the first zygotic cell division in bryophytes, shoot cell divisions of the gametophyte and sporophyte in ferns, cone differentiation in gymnosperms and floral meristem identity in flowering plants. However, their putative plesiomorphic role in plant reproductive transition in vascular plants remains untested. RESULTS We perform Maximum Likelihood (ML) phylogenetic analyses for the LFY gene lineage in embryophytes with expanded sampling in lycophytes and ferns. We recover the previously identified seed plant duplication that results in LEAFY and NEEDLY paralogs. In addition, we recover multiple species-specific duplications in ferns and lycophytes and large-scale duplications possibly correlated with the occurrence of whole genome duplication (WGD) events in Equisetales and Salviniales. To test putative roles in diverse ferns and lycophytes we perform LFY expression analyses in Adiantum raddianum, Equisetum giganteum and Selaginella moellendorffii. Our results show that LFY genes are active in vegetative and reproductive tissues, with higher expression in early fertile developmental stages and during sporangia differentiation. CONCLUSIONS Our data point to previously unrecognized roles of LFY genes in sporangia differentiation in lycophytes and ferns and suggests that functions linked to reproductive structure development are not exclusive to seed plant LFY homologs.
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Chung O, Kim J, Bolser D, Kim HM, Jun JH, Choi JP, Jang HD, Cho YS, Bhak J, Kwak M. A chromosome-scale genome assembly and annotation of the spring orchid (Cymbidium goeringii). Mol Ecol Resour 2021; 22:1168-1177. [PMID: 34687590 DOI: 10.1111/1755-0998.13537] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/23/2021] [Accepted: 08/23/2021] [Indexed: 12/13/2022]
Abstract
Cymbidium goeringii, commonly known as the spring orchid, has long been favoured for horticultural purposes in Asian countries. It is a popular orchid with much demand for improvement and development for its valuable varieties. Until now, its reference genome has not been published despite its popularity and conservation efforts. Here, we report the de novo assembly of the C. goeringii genome, which is the largest among the orchids published to date, using a strategy that combines short- and long-read sequencing and chromosome conformation capture (Hi-C) information. The total length of all scaffolds is 3.99 Gb, with an N50 scaffold size of 178.2 Mb. A total of 29,556 protein-coding genes were annotated and 3.55 Gb (88.87% of genome) repetitive sequences were identified. We constructed pseudomolecular chromosomes using Hi-C, incorporating 89.4% of the scaffolds in 20 chromosomes. We identified 220 expanded and 106 contracted genes families in C. goeringii after divergence from its close relative. We also identified new gene families, resistance gene analogues and changes within the MADS-box genes, which control a diverse set of developmental processes during orchid evolution. Our high quality chromosomal-level assembly of C. goeringii can provide a platform for elucidating the genomic evolution of orchids, mining functional genes for agronomic traits and for developing molecular markers for accelerated breeding as well as accelerating conservation efforts.
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Affiliation(s)
- Oksung Chung
- Clinomics, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
| | - Jungeun Kim
- Personal Genomics Institute (PGI), Genome Research Foundation, Cheongju, Korea
| | - Dan Bolser
- Clinomics, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea.,Geromics Ltd., Cambridge, UK
| | - Hak-Min Kim
- Clinomics, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
| | - Je Hoon Jun
- Clinomics, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
| | - Jae-Pil Choi
- Personal Genomics Institute (PGI), Genome Research Foundation, Cheongju, Korea
| | - Hyun-Do Jang
- National Institute of Biological Resources, Environmental Research Complex, Incheon, Korea
| | - Yun Sung Cho
- Clinomics, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
| | - Jong Bhak
- Clinomics, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea.,Geromics Ltd., Cambridge, UK.,Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea.,Department of Biomedical Engineering, School of Life Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
| | - Myounghai Kwak
- National Institute of Biological Resources, Environmental Research Complex, Incheon, Korea
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Ambrose BA, Smalls TL, Zumajo-Cardona C. All type II classic MADS-box genes in the lycophyte Selaginella moellendorffii are broadly yet discretely expressed in vegetative and reproductive tissues. Evol Dev 2021; 23:215-230. [PMID: 33666357 DOI: 10.1111/ede.12375] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 01/13/2021] [Accepted: 01/30/2021] [Indexed: 11/29/2022]
Abstract
The MADS-box genes constitute a large transcription factor family that appear to have evolved by duplication and diversification of function. Two types of MADS-box genes are distinguished throughout eukaryotes, types I and II. Type II classic MADS-box genes, also known as MIKC-type, are key developmental regulators in flowering plants and are particularly well-studied for their role in floral organ specification. However, very little is known about the role that these genes might play outside of the flowering plants. We investigated the evolution of type II classic MADS-box genes across land plants by performing a maximum likelihood analysis with a particular focus on lycophytes. Here, we present the expression patterns of all three type II classic MADS-box homologs throughout plant development in the lycophyte Selaginella moellendorffii: SmMADS1, SmMADS3, and SmMADS6. We used scanning electron microscopy and histological analyses to define stages of sporangia development in S. moellendorffii. We performed phylogenetic analyses of this gene lineage across land plants and found that lycophyte sequences appeared before the multiple duplication events that gave rise to the major MADS-box gene lineages in seed plants. Our expression analyses by in situ hybridization show that all type II classic MADS-box genes in S. moellendorffii have broad but distinct patterns of expression in vegetative and reproductive tissues, where SmMADS1 and SmMADS6 only differ during late sporangia development. The broad expression during S. moellendorffii development suggests that MADS-box genes have undergone neofunctionalization and subfunctionalization after duplication events in seed plants.
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Affiliation(s)
| | | | - Cecilia Zumajo-Cardona
- New York Botanical Garden, Bronx, Bronx, New York, USA.,The Graduate Center, City University of New York, New York, New York, USA
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10
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Orchid B sister gene PeMADS28 displays conserved function in ovule integument development. Sci Rep 2021; 11:1205. [PMID: 33441740 PMCID: PMC7806631 DOI: 10.1038/s41598-020-79877-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 12/14/2020] [Indexed: 11/21/2022] Open
Abstract
The ovules and egg cells are well developed to be fertilized at anthesis in many flowering plants. However, ovule development is triggered by pollination in most orchids. In this study, we characterized the function of a Bsister gene, named PeMADS28, isolated from Phalaenopsis equestris, the genome-sequenced orchid. Spatial and temporal expression analysis showed PeMADS28 predominantly expressed in ovules between 32 and 48 days after pollination, which synchronizes with integument development. Subcellular localization and protein–protein interaction analyses revealed that PeMADS28 could form a homodimer as well as heterodimers with D-class and E-class MADS-box proteins. In addition, ectopic expression of PeMADS28 in Arabidopsis thaliana induced small curled rosette leaves, short silique length and few seeds, similar to that with overexpression of other species’ Bsister genes in Arabidopsis. Furthermore, complementation test revealed that PeMADS28 could rescue the phenotype of the ABS/TT16 mutant. Together, these results indicate the conserved function of BsisterPeMADS28 associated with ovule integument development in orchid.
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Zhang R, Wang FG, Zhang J, Shang H, Liu L, Wang H, Zhao GH, Shen H, Yan YH. Dating Whole Genome Duplication in Ceratopteris thalictroides and Potential Adaptive Values of Retained Gene Duplicates. Int J Mol Sci 2019; 20:ijms20081926. [PMID: 31010109 PMCID: PMC6515051 DOI: 10.3390/ijms20081926] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/14/2019] [Accepted: 04/16/2019] [Indexed: 12/14/2022] Open
Abstract
Whole-genome duplications (WGDs) are widespread in plants and frequently coincide with global climatic change events, such as the Cretaceous–Tertiary (KT) extinction event approximately 65 million years ago (mya). Ferns have larger genomes and higher chromosome numbers than seed plants, which likely resulted from multiple rounds of polyploidy. Here, we use diploid and triploid material from a model fern species, Ceratopteris thalictroides, for the detection of WGDs. High-quality RNA-seq data was used to infer the number of synonymous substitutions per synonymous site (Ks) between paralogs; Ks age distribution and absolute dating approach were used to determine the age of WGD events. Evidence of an ancient WGD event with a Ks peak value of approximately 1.2 was obtained for both samples; however, the Ks frequency distributions varied significantly. Importantly, we dated the WGD event at 51–53 mya, which coincides with the Paleocene-Eocene Thermal Maximum (PETM), when the Earth became warmer and wetter than any other period during the Cenozoic. Duplicate genes were preferentially retained for specific functions, such as environment response, further support that the duplicates may have promoted quick adaption to environmental changes and potentially resulted in evolutionary success, especially for pantropical species, such as C. thalictroides, which exhibits higher temperature tolerance.
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Affiliation(s)
- Rui Zhang
- Shanghai Chenshan Plant Science Research Center, Shanghai Chenshan Botanical Garden, Chinese Academy of Sciences, Shanghai 201602, China.
- Eastern China Conservation Center for Wild Endangered Plant Resources, Shanghai 201602, China.
| | - Fa-Guo Wang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
| | - Jiao Zhang
- Shanghai Chenshan Plant Science Research Center, Shanghai Chenshan Botanical Garden, Chinese Academy of Sciences, Shanghai 201602, China.
- Eastern China Conservation Center for Wild Endangered Plant Resources, Shanghai 201602, China.
| | - Hui Shang
- Shanghai Chenshan Plant Science Research Center, Shanghai Chenshan Botanical Garden, Chinese Academy of Sciences, Shanghai 201602, China.
- Eastern China Conservation Center for Wild Endangered Plant Resources, Shanghai 201602, China.
| | - Li Liu
- Shanghai Chenshan Plant Science Research Center, Shanghai Chenshan Botanical Garden, Chinese Academy of Sciences, Shanghai 201602, China.
- Eastern China Conservation Center for Wild Endangered Plant Resources, Shanghai 201602, China.
| | - Hao Wang
- Shanghai Chenshan Plant Science Research Center, Shanghai Chenshan Botanical Garden, Chinese Academy of Sciences, Shanghai 201602, China.
- Eastern China Conservation Center for Wild Endangered Plant Resources, Shanghai 201602, China.
| | - Guo-Hua Zhao
- Shanghai Chenshan Plant Science Research Center, Shanghai Chenshan Botanical Garden, Chinese Academy of Sciences, Shanghai 201602, China.
- Eastern China Conservation Center for Wild Endangered Plant Resources, Shanghai 201602, China.
| | - Hui Shen
- Shanghai Chenshan Plant Science Research Center, Shanghai Chenshan Botanical Garden, Chinese Academy of Sciences, Shanghai 201602, China.
- Eastern China Conservation Center for Wild Endangered Plant Resources, Shanghai 201602, China.
| | - Yue-Hong Yan
- Shanghai Chenshan Plant Science Research Center, Shanghai Chenshan Botanical Garden, Chinese Academy of Sciences, Shanghai 201602, China.
- Eastern China Conservation Center for Wild Endangered Plant Resources, Shanghai 201602, China.
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12
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Wang S, Peng MC, Chen X, Yu Liu C, Chen Y, Dan Liu X, Bao Zhou R. Molecular cloning and spatiotemporal expression of APETALA1-like gene in Lonicera macranthoides. J Genet 2018; 97:1281-1288. [PMID: 30555076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
APETALA1 (AP1), a floral meristem identity gene controls the flowering time and floral transition, and plays an important role in inflorescence and floral organ development. The full-length cDNA for AP1 was obtained by rapid amplification ofthe cDNA ends (RACE) so that the roles of AP1 in Lonicera macranthoides (Lm-AP1) could be better understood. AP1 (accession number in GenBank: MF418642) consisted of a 729-bp open reading frame encoding a protein that contained 242 amino acids, had a deduced molecular mass of 27.9919 kDa and a theoretical isoelectric point of 8.75. No signal peptide or transmembranedomains were detected in the sequences located in the nucleus, but it contained conserved sequences for MADS and the K-box. In the secondary structure, the alpha helix accounts for 60.74%, the beta turn 3.72%. The real-time polymerase chain reaction revealed that AP1 was more highly expressed in flowers, especially at the fourth flowering stage, which implied that it may play a role in flower development. Other L. macranthoides organs, such as stems and leaves, also expressed AP1. This research provided the basis for further analysis of the AP1 functional mechanism during L. macranthoides development.
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Affiliation(s)
- Shan Wang
- College of Pharmacy, Hunan University of Chinese Medicine, Changsha, People's Republic of ,
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13
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Sigel EM, Schuettpelz E, Pryer KM, Der JP. Overlapping Patterns of Gene Expression Between Gametophyte and Sporophyte Phases in the Fern Polypodium amorphum (Polypodiales). FRONTIERS IN PLANT SCIENCE 2018; 9:1450. [PMID: 30356815 PMCID: PMC6190754 DOI: 10.3389/fpls.2018.01450] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 09/12/2018] [Indexed: 05/16/2023]
Abstract
Ferns are unique among land plants in having sporophyte and gametophyte phases that are both free living and fully independent. Here, we examine patterns of sporophytic and gametophytic gene expression in the fern Polypodium amorphum, a member of the homosporous polypod lineage that comprises 80% of extant fern diversity, to assess how expression of a common genome is partitioned between two morphologically, ecologically, and nutritionally independent phases. Using RNA-sequencing, we generated transcriptome profiles for three replicates of paired samples of sporophyte leaf tissue and whole gametophytes to identify genes with significant differences in expression between the two phases. We found a nearly 90% overlap in the identity and expression levels of the genes expressed in both sporophytes and gametophytes, with less than 3% of genes uniquely expressed in either phase. We compare our results to those from similar studies to establish how phase-specific gene expression varies among major land plant lineages. Notably, despite having greater similarity in the identity of gene families shared between P. amorphum and angiosperms, P. amorphum has phase-specific gene expression profiles that are more like bryophytes and lycophytes than seed plants. Our findings suggest that shared patterns of phase-specific gene expression among seed-free plants likely reflect having relatively large, photosynthetic gametophytes (compared to the gametophytes of seed plants that are highly reduced). Phylogenetic analyses were used to further investigate the evolution of phase-specific expression for the phototropin, terpene synthase, and MADS-box gene families.
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Affiliation(s)
- Erin M. Sigel
- Department of Biology, University of Louisiana at Lafayette, Lafayette, LA, United States
| | - Eric Schuettpelz
- Department of Botany, National Museum of Natural History, Smithsonian Institution, Washington, DC, United States
| | | | - Joshua P. Der
- Department of Biological Science, California State University Fullerton, Fullerton, CA, United States
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14
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Wu Y, Ke Y, Wen J, Guo P, Ran F, Wang M, Liu M, Li P, Li J, Du H. Evolution and expression analyses of the MADS-box gene family in Brassica napus. PLoS One 2018; 13:e0200762. [PMID: 30024950 PMCID: PMC6053192 DOI: 10.1371/journal.pone.0200762] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 07/02/2018] [Indexed: 11/18/2022] Open
Abstract
MADS-box transcription factors are important for plant growth and development, and hundreds of MADS-box genes have been functionally characterized in plants. However, less is known about the functions of these genes in the economically important allopolyploid oil crop, Brassica napus. We identified 307 potential MADS-box genes (BnMADSs) in the B. napus genome and categorized them into type I (Mα, Mβ, and Mγ) and type II (MADS DNA-binding domain, intervening domain, keratin-like domain, and C-terminal domain [MIKC]c and MIKC*) based on phylogeny, protein motif structure, and exon-intron organization. We identified one conserved intron pattern in the MADS-box domain and seven conserved intron patterns in the K-box domain of the MIKCc genes that were previously ignored and may be associated with function. Chromosome distribution and synteny analysis revealed that hybridization between Brassica rapa and Brassica oleracea, segmental duplication, and homologous exchange (HE) in B. napus were the main BnMADSs expansion mechanisms. Promoter cis-element analyses indicated that BnMADSs may respond to various stressors (drought, heat, hormones) and light. Expression analyses showed that homologous genes in a given subfamily or sister pair are highly conserved, indicating widespread functional conservation and redundancy. Analyses of BnMADSs provide a basis for understanding their functional roles in plant development.
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Affiliation(s)
- Yunwen Wu
- College of Agronomy and Biotechnology, Chongqing Engineering Research Center for Rapeseed, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Yunzhuo Ke
- College of Agronomy and Biotechnology, Chongqing Engineering Research Center for Rapeseed, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Jing Wen
- College of Agronomy and Biotechnology, Chongqing Engineering Research Center for Rapeseed, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Pengcheng Guo
- College of Agronomy and Biotechnology, Chongqing Engineering Research Center for Rapeseed, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Feng Ran
- College of Agronomy and Biotechnology, Chongqing Engineering Research Center for Rapeseed, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Mangmang Wang
- College of Agronomy and Biotechnology, Chongqing Engineering Research Center for Rapeseed, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Mingming Liu
- College of Agronomy and Biotechnology, Chongqing Engineering Research Center for Rapeseed, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Pengfeng Li
- College of Agronomy and Biotechnology, Chongqing Engineering Research Center for Rapeseed, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Jiana Li
- College of Agronomy and Biotechnology, Chongqing Engineering Research Center for Rapeseed, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Hai Du
- College of Agronomy and Biotechnology, Chongqing Engineering Research Center for Rapeseed, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
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15
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Thangavel G, Nayar S. A Survey of MIKC Type MADS-Box Genes in Non-seed Plants: Algae, Bryophytes, Lycophytes and Ferns. FRONTIERS IN PLANT SCIENCE 2018; 9:510. [PMID: 29720991 PMCID: PMC5915566 DOI: 10.3389/fpls.2018.00510] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 04/03/2018] [Indexed: 05/22/2023]
Abstract
MADS box transcription factors have been studied extensively in flowering plants but remain less studied in non-seed plants. MADS box is one such example of a gene which is prevalent across many classes of plants ranging from chlorophyta to embryophyta as well as fungi and animals. MADS box transcription factors are of two types, Type I and Type II. Type II transcription factors (TF) that consist of a MADS domain, I region, K domain, and C terminal domain are discussed in this review. The Type II/ MIKC class is widespread across charophytes and all major lineages of land plants but unknown in green and red algae. These transcription factors have been implicated in floral development in seed plants and thus the question arises, "What is their role in non-seed plants?" From the studies reviewed here it can be gathered that unlike seed plants, MIKCC genes in non-seed plants have roles in both gametophytic and sporophytic generations and contribute to the development of both vegetative and reproductive structures. On the other hand as previously observed in seed plants, MIKC* genes of non-seed plants have a conserved role during gametophyte development. With respect to evolution of MIKC genes in non-seed plants, the number of common ancestors is probably very few at each branch. The expansion of this gene family in seed plants and increased plant complexity seem to be correlated. As gradually the genomes of non-seed plants are becoming available it is worthwhile to gather the existing information about MADS box genes in non-seed plants. This review highlights various MIKC MADS box genes discovered so far in non-seed plants, their possible roles and an insight into their evolution.
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16
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Sehra B, Franks RG. Redundant CArG Box Cis-motif Activity Mediates SHATTERPROOF2 Transcriptional Regulation during Arabidopsis thaliana Gynoecium Development. FRONTIERS IN PLANT SCIENCE 2017; 8:1712. [PMID: 29085379 PMCID: PMC5650620 DOI: 10.3389/fpls.2017.01712] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Accepted: 09/19/2017] [Indexed: 05/29/2023]
Abstract
In the Arabidopsis thaliana seed pod, pod shatter and seed dispersal properties are in part determined by the development of a longitudinally orientated dehiscence zone (DZ) that derives from cells of the gynoecial valve margin (VM). Transcriptional regulation of the MADS protein encoding transcription factors genes SHATTERPROOF1 (SHP1) and SHATTERPROOF2 (SHP2) are critical for proper VM identity specification and later on for DZ development. Current models of SHP1 and SHP2 regulation indicate that the transcription factors FRUITFULL (FUL) and REPLUMLESS (RPL) repress these SHP genes in the developing valve and replum domains, respectively. Thus the expression of the SHP genes is restricted to the VM. FUL encodes a MADS-box containing transcription factor that is predicted to act through CArG-box containing cis-regulatory motifs. Here we delimit functional modules within the SHP2 cis-regulatory region and examine the functional importance of CArG box motifs within these regulatory regions. We have characterized a 2.2kb region upstream of the SHP2 translation start site that drives early and late medial domain expression in the gynoecium, as well as expression within the VM and DZ. We identified two separable, independent cis-regulatory modules, a 1kb promoter region and a 700bp enhancer region, that are capable of giving VM and DZ expression. Our results argue for multiple independent cis-regulatory modules that support SHP2 expression during VM development and may contribute to the robustness of SHP2 expression in this tissue. Additionally, three closely positioned CArG box motifs located in the SHP2 upstream regulatory region were mutated in the context of the 2.2kb reporter construct. Mutating simultaneously all three CArG boxes caused a moderate de-repression of the SHP2 reporter that was detected within the valve domain, suggesting that these CArG boxes are involved in SHP2 repression in the valve.
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17
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Theißen G, Melzer R, Rümpler F. MADS-domain transcription factors and the floral quartet model of flower development: linking plant development and evolution. Development 2017; 143:3259-71. [PMID: 27624831 DOI: 10.1242/dev.134080] [Citation(s) in RCA: 238] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The floral quartet model of floral organ specification poses that different tetramers of MIKC-type MADS-domain transcription factors control gene expression and hence the identity of floral organs during development. Here, we provide a brief history of the floral quartet model and review several lines of recent evidence that support the model. We also describe how the model has been used in contemporary developmental and evolutionary biology to shed light on enigmatic topics such as the origin of land and flowering plants. Finally, we suggest a novel hypothesis describing how floral quartet-like complexes may interact with chromatin during target gene activation and repression.
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Affiliation(s)
- Günter Theißen
- Department of Genetics, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Rainer Melzer
- School of Biology and Environmental Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Florian Rümpler
- Department of Genetics, Friedrich Schiller University Jena, 07743 Jena, Germany
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18
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Yang W, Lou X, Li J, Pu M, Mirbahar AA, Liu D, Sun J, Zhan K, He L, Zhang A. Cloning and Functional Analysis of MADS-box Genes, TaAG-A and TaAG-B, from a Wheat K-type Cytoplasmic Male Sterile Line. FRONTIERS IN PLANT SCIENCE 2017; 8:1081. [PMID: 28676817 PMCID: PMC5476771 DOI: 10.3389/fpls.2017.01081] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 06/06/2017] [Indexed: 05/30/2023]
Abstract
Wheat (Triticum aestivum L.) is a major crop worldwide. The utilization of heterosis is a promising approach to improve the yield and quality of wheat. Although there have been many studies on wheat cytoplasmic male sterility, its mechanism remains unclear. In this study, we identified two MADS-box genes from a wheat K-type cytoplasmic male sterile (CMS) line using homology-based cloning. These genes were localized on wheat chromosomes 3A and 3B and named TaAG-A and TaAG-B, respectively. Analysis of TaAG-A and TaAG-B expression patterns in leaves, spikes, roots, and stems of Chinese Spring wheat determined using quantitative RT-PCR revealed different expression levels in different tissues. TaAG-A had relatively high expression levels in leaves and spikes, but low levels in roots, while TaAG-B had relatively high expression levels in spikes and lower expression in roots, stems, and leaves. Both genes showed downregulation during the mononucleate to trinucleate stages of pollen development in the maintainer line. In contrast, upregulation of TaAG-B was observed in the CMS line. The transcript levels of the two genes were clearly higher in the CMS line compared to the maintainer line at the trinucleate stage. Overexpression of TaAG-A and TaAG-B in Arabidopsis resulted in phenotypes with earlier reproductive development, premature mortality, and abnormal buds, stamens, and stigmas. Overexpression of TaAG-A and TaAG-B gives rise to mutants with many deformities. Silencing TaAG-A and TaAG-B in a fertile wheat line using the virus-induced gene silencing (VIGS) method resulted in plants with green and yellow striped leaves, emaciated spikes, and decreased selfing seed set rates. These results demonstrate that TaAG-A and TaAG-B may play a role in male sterility in the wheat CMS line.
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Affiliation(s)
- Wenlong Yang
- The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
| | - Xueyuan Lou
- The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
- College of Forestry, Henan Agricultural UniversityZhengzhou, China
| | - Juan Li
- College of Life Sciences, Hunan Agricultural UniversityChangsha, China
| | - Mingyu Pu
- The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
| | - Ameer A. Mirbahar
- The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
- Department of Botany, Shah Abdul Latif UniversityKhairpur, Pakistan
| | - Dongcheng Liu
- The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
| | - Jiazhu Sun
- The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
| | - Kehui Zhan
- The Collaborative Center for Grain Crops in Henan, College of Agronomy, Henan Agricultural UniversityZhengzhou, China
| | - Lixiong He
- College of Life Sciences, Hunan Agricultural UniversityChangsha, China
| | - Aimin Zhang
- The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesBeijing, China
- The Collaborative Center for Grain Crops in Henan, College of Agronomy, Henan Agricultural UniversityZhengzhou, China
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19
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Kitazawa Y, Iwabuchi N, Himeno M, Sasano M, Koinuma H, Nijo T, Tomomitsu T, Yoshida T, Okano Y, Yoshikawa N, Maejima K, Oshima K, Namba S. Phytoplasma-conserved phyllogen proteins induce phyllody across the Plantae by degrading floral MADS domain proteins. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:2799-2811. [PMID: 28505304 PMCID: PMC5853863 DOI: 10.1093/jxb/erx158] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 04/13/2017] [Indexed: 05/21/2023]
Abstract
ABCE-class MADS domain transcription factors (MTFs) are key regulators of floral organ development in angiosperms. Aberrant expression of these genes can result in abnormal floral traits such as phyllody. Phyllogen is a virulence factor conserved in phytoplasmas, plant pathogenic bacteria of the class Mollicutes. It triggers phyllody in Arabidopsis thaliana by inducing degradation of A- and E-class MTFs. However, it is still unknown whether phyllogen can induce phyllody in plants other than A. thaliana, although phytoplasma-associated phyllody symptoms are observed in a broad range of angiosperms. In this study, phyllogen was shown to cause phyllody phenotypes in several eudicot species belonging to three different families. Moreover, phyllogen can interact with MTFs of not only angiosperm species including eudicots and monocots but also gymnosperms and a fern, and induce their degradation. These results suggest that phyllogen induces phyllody in angiosperms and inhibits MTF function in diverse plant species.
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Affiliation(s)
- Yugo Kitazawa
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Nozomu Iwabuchi
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Misako Himeno
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Momoka Sasano
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Hiroaki Koinuma
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Takamichi Nijo
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Tatsuya Tomomitsu
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Tetsuya Yoshida
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Yukari Okano
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Nobuyuki Yoshikawa
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka-shi, Iwate, Japan
| | - Kensaku Maejima
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Kenro Oshima
- Faculty of Bioscience, Hosei University, 3-7-2 Kajino-cho, Koganei-shi, Tokyo, Japan
| | - Shigetou Namba
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
- Correspondence:
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20
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Sun Y, Wang G, Li Y, Jiang L, Yang Y, Guan S. De novo transcriptome sequencing and comparative analysis to discover genes related to floral development in Cymbidium faberi Rolfe. SPRINGERPLUS 2016; 5:1458. [PMID: 27833829 PMCID: PMC5082062 DOI: 10.1186/s40064-016-3089-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 08/17/2016] [Indexed: 12/15/2022]
Abstract
Cymbidium faberi is a traditional orchid flower in China that is highly appreciated for its fragrant aroma from its zygomorphic flowers. One bottleneck of the commercial production of C. faberi is the long vegetative growth phase of the orchid and the difficulty of the regulation of its flowering time. Moreover, its flower size, shape and color are often targeting traits for orchid breeders. Understanding the molecular mechanisms of floral development in C. faberi will ultimately benefit the genetic improvement of this orchid plant. The goal of this study is to identify potential genes and regulatory networks related to the floral development in C. faberi by using transcriptome sequencing, de novo assembly and computational analyses. The vegetative and flower buds of C. faberi were sampled for such comparisons. The RNA-seq yielded about 189,300 contigs that were assembled into 172,959 unigenes. Furthermore, a total of 13,484 differentially expressed unigenes (DEGs) were identified between the vegetative and flower buds. There were 7683 down-regulated and 5801 up-regulated DEGs in the flower buds compared to those in the vegetative buds, among which 3430 and 6556 DEGs were specifically enriched in the flower or vegetative buds, respectively. A total of 173 DEGs orthologous to known genes associated with the floral organ development, floral symmetry and flowering time were identified, including 12 TCP transcription factors, 34 MADS-box genes and 28 flowering time related genes. Furthermore, expression levels of ten genes potentially involved in floral development and flowering time were verified by quantitative real-time PCR. The identified DEGs will facilitate the functional genetic studies for further understanding the flower development of C. faberi.
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Affiliation(s)
- Yuying Sun
- Department of Horticulture, Nanjing Agricultural University, Nanjing, 210095 China
| | - Guangdong Wang
- Department of Horticulture, Nanjing Agricultural University, Nanjing, 210095 China
| | - Yuxia Li
- Department of Horticulture, Nanjing Agricultural University, Nanjing, 210095 China
| | - Li Jiang
- Department of Horticulture, Nanjing Agricultural University, Nanjing, 210095 China
| | - Yuxia Yang
- Department of Horticulture, Nanjing Agricultural University, Nanjing, 210095 China
| | - Shuangxue Guan
- Department of Horticulture, Nanjing Agricultural University, Nanjing, 210095 China
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21
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Huang JZ, Lin CP, Cheng TC, Huang YW, Tsai YJ, Cheng SY, Chen YW, Lee CP, Chung WC, Chang BCH, Chin SW, Lee CY, Chen FC. The genome and transcriptome of Phalaenopsis yield insights into floral organ development and flowering regulation. PeerJ 2016; 4:e2017. [PMID: 27190718 PMCID: PMC4868593 DOI: 10.7717/peerj.2017] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/17/2016] [Indexed: 01/28/2023] Open
Abstract
The Phalaenopsis orchid is an important potted flower of high economic value around the world. We report the 3.1 Gb draft genome assembly of an important winter flowering Phalaenopsis ‘KHM190’ cultivar. We generated 89.5 Gb RNA-seq and 113 million sRNA-seq reads to use these data to identify 41,153 protein-coding genes and 188 miRNA families. We also generated a draft genome for Phalaenopsis pulcherrima ‘B8802,’ a summer flowering species, via resequencing. Comparison of genome data between the two Phalaenopsis cultivars allowed the identification of 691,532 single-nucleotide polymorphisms. In this study, we reveal that the key role of PhAGL6b in the regulation of labellum organ development involves alternative splicing in the big lip mutant. Petal or sepal overexpressing PhAGL6b leads to the conversion into a lip-like structure. We also discovered that the gibberellin pathway that regulates the expression of flowering time genes during the reproductive phase change is induced by cool temperature. Our work thus depicted a valuable resource for the flowering control, flower architecture development, and breeding of the Phalaenopsis orchids.
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Affiliation(s)
- Jian-Zhi Huang
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Chih-Peng Lin
- Yourgene Bioscience, Shu-Lin District, New Taipei City, Taiwan.,Department of Biotechnology, School of Health Technology, Ming Chuan University, Gui Shan District, Taoyuan, Taiwan
| | - Ting-Chi Cheng
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Ya-Wen Huang
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Yi-Jung Tsai
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Shu-Yun Cheng
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Yi-Wen Chen
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Chueh-Pai Lee
- Yourgene Bioscience, Shu-Lin District, New Taipei City, Taiwan
| | - Wan-Chia Chung
- Yourgene Bioscience, Shu-Lin District, New Taipei City, Taiwan
| | - Bill Chia-Han Chang
- Yourgene Bioscience, Shu-Lin District, New Taipei City, Taiwan.,Faculty of Veterinary Science, The University of Melbourne, Parkville, Victoria, Australia
| | - Shih-Wen Chin
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Chen-Yu Lee
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Fure-Chyi Chen
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
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22
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Niu S, Yuan H, Sun X, Porth I, Li Y, El-Kassaby YA, Li W. A transcriptomics investigation into pine reproductive organ development. THE NEW PHYTOLOGIST 2016; 209:1278-1289. [PMID: 26406997 DOI: 10.1111/nph.13680] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 08/20/2015] [Indexed: 06/05/2023]
Abstract
The development of reproductive structures in gymnosperms is still poorly studied because of a lack of genomic information and useful genetic tools. The hermaphroditic reproductive structure derived from unisexual gymnosperms is an even less studied aspect of seed plant evolution. To extend our understanding of the molecular mechanism of hermaphroditism and the determination of sexual identity of conifer reproductive structures in general, unisexual and bisexual cones from Pinus tabuliformis were profiled for gene expression using 60K microarrays. Expression patterns of genes during progression of sexual cone development were analysed using RNA-seq. The results showed that, overall, the transcriptomes of male structures in bisexual cones were more similar to those of female cones. However, the expression of several MADS-box genes in the bisexual cones was similar to that of male cones at the more juvenile developmental stage, while despite these expression shifts, male structures of bisexual cones and normal male cones were histologically indistinguishable and cone development was continuous. This study represents a starting point for in-depth analysis of the molecular regulation of cone development and also the origin of hermaphroditism in pine.
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Affiliation(s)
- Shihui Niu
- National Engineering Laboratory for Forest Tree Breeding, Key Laboratory for Genetics and Breeding of Forest Trees and Ornamental Plants of Ministry of Education, College of biological sciences and technology, Beijing Forestry University, Beijing, 100083, China
| | - Huwei Yuan
- National Engineering Laboratory for Forest Tree Breeding, Key Laboratory for Genetics and Breeding of Forest Trees and Ornamental Plants of Ministry of Education, College of biological sciences and technology, Beijing Forestry University, Beijing, 100083, China
| | - Xinrui Sun
- National Engineering Laboratory for Forest Tree Breeding, Key Laboratory for Genetics and Breeding of Forest Trees and Ornamental Plants of Ministry of Education, College of biological sciences and technology, Beijing Forestry University, Beijing, 100083, China
| | - Ilga Porth
- Department of Forest and Conservation Sciences, Faculty of Forestry, The University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
- Département des Sciences du Bois et de la Forêt, Faculté de Foresterie, de Géographie et de Géomatique, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Yue Li
- National Engineering Laboratory for Forest Tree Breeding, Key Laboratory for Genetics and Breeding of Forest Trees and Ornamental Plants of Ministry of Education, College of biological sciences and technology, Beijing Forestry University, Beijing, 100083, China
| | - Yousry A El-Kassaby
- Department of Forest and Conservation Sciences, Faculty of Forestry, The University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Wei Li
- National Engineering Laboratory for Forest Tree Breeding, Key Laboratory for Genetics and Breeding of Forest Trees and Ornamental Plants of Ministry of Education, College of biological sciences and technology, Beijing Forestry University, Beijing, 100083, China
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Yan L, Wang X, Liu H, Tian Y, Lian J, Yang R, Hao S, Wang X, Yang S, Li Q, Qi S, Kui L, Okpekum M, Ma X, Zhang J, Ding Z, Zhang G, Wang W, Dong Y, Sheng J. The Genome of Dendrobium officinale Illuminates the Biology of the Important Traditional Chinese Orchid Herb. MOLECULAR PLANT 2015; 8:922-34. [PMID: 25825286 DOI: 10.1016/j.molp.2014.12.011] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 12/15/2014] [Accepted: 12/16/2014] [Indexed: 05/05/2023]
Abstract
Dendrobium officinale Kimura et Migo is a traditional Chinese orchid herb that has both ornamental value and a broad range of therapeutic effects. Here, we report the first de novo assembled 1.35 Gb genome sequences for D. officinale by combining the second-generation Illumina Hiseq 2000 and third-generation PacBio sequencing technologies. We found that orchids have a complete inflorescence gene set and have some specific inflorescence genes. We observed gene expansion in gene families related to fungus symbiosis and drought resistance. We analyzed biosynthesis pathways of medicinal components of D. officinale and found extensive duplication of SPS and SuSy genes, which are related to polysaccharide generation, and that the pathway of D. officinale alkaloid synthesis could be extended to generate 16-epivellosimine. The D. officinale genome assembly demonstrates a new approach to deciphering large complex genomes and, as an important orchid species and a traditional Chinese medicine, the D. officinale genome will facilitate future research on the evolution of orchid plants, as well as the study of medicinal components and potential genetic breeding of the dendrobe.
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Affiliation(s)
- Liang Yan
- College of Life Science, Jilin University, Changchun 130012, China; Pu'er Institute of Pu-er Tea, Pu'er 665000, China
| | - Xiao Wang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences (CAS), Kunming, Yunnan 650223, China
| | - Hui Liu
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences (CAS), Kunming, Yunnan 650223, China
| | - Yang Tian
- College of Life Science, Jilin University, Changchun 130012, China; Key Laboratory of Puerh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China
| | - Jinmin Lian
- China National GeneBank-Shenzhen, BGI-Shenzhen, Shenzhen 518083, China
| | - Ruijuan Yang
- Pu'er Institute of Pu-er Tea, Pu'er 665000, China
| | - Shumei Hao
- Yunnan University, Kunming 650091, China
| | - Xuanjun Wang
- Key Laboratory of Puerh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China
| | - Shengchao Yang
- Key Laboratory of Puerh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China
| | - Qiye Li
- China National GeneBank-Shenzhen, BGI-Shenzhen, Shenzhen 518083, China
| | - Shuai Qi
- Agri-Biotech Lab, Kunming 650502, China
| | - Ling Kui
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences (CAS), Kunming, Yunnan 650223, China
| | - Moses Okpekum
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences (CAS), Kunming, Yunnan 650223, China
| | - Xiao Ma
- Key Laboratory of Puerh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China
| | - Jiajin Zhang
- School of Science and Information Engineering, Yunnan Agricultural University, Kunming 650201, China
| | - Zhaoli Ding
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences (CAS), Kunming, Yunnan 650223, China
| | - Guojie Zhang
- China National GeneBank-Shenzhen, BGI-Shenzhen, Shenzhen 518083, China
| | - Wen Wang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences (CAS), Kunming, Yunnan 650223, China
| | - Yang Dong
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences (CAS), Kunming, Yunnan 650223, China; Laboratory of Applied Genomics and Synthetic Biology, College of Life Science, Kunming University of Science and Technology, Kunming 650500, China.
| | - Jun Sheng
- College of Life Science, Jilin University, Changchun 130012, China; Key Laboratory of Puerh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China.
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Wang J, Hou C, Huang J, Wang Z, Xu Y. SVP-like MADS-box protein from Carya cathayensis forms higher-order complexes. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2015; 88:9-16. [PMID: 25602439 DOI: 10.1016/j.plaphy.2015.01.002] [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: 11/12/2014] [Accepted: 01/06/2015] [Indexed: 06/04/2023]
Abstract
To properly regulate plant flowering time and construct floral pattern, MADS-domain containing transcription factors must form multimers including homo- and hetero-dimers. They are also active in forming hetero-higher-order complexes with three to five different molecules. However, it is not well known if a MADS-box protein can also form homo-higher-order complex. In this study a biochemical approach is utilized to provide insight into the complex formation for an SVP-like MADS-box protein cloned from hickory. The results indicated that the protein is a heterogeneous higher-order complex with the peak population containing over 20 monomers. Y2H verified the protein to form homo-complex in yeast cells. Western blot of the hickory floral bud sample revealed that the protein exists in higher-order polymers in native. Deletion assays indicated that the flexible C-terminal residues are mainly responsible for the higher-order polymer formation and the heterogeneity. Current results provide direct biochemical evidences for an active MADS-box protein to be a high order complex, much higher than a quartermeric polymer. Analysis suggests that a MADS-box subset may be able to self-assemble into large complexes, and thereby differentiate one subfamily from the other in a higher-order structural manner. Present result is a valuable supplement to the action of mechanism for MADS-box proteins in plant development.
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Affiliation(s)
- Jingjing Wang
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang Agriculture and Forestry University, Lin'an, Zhejiang 311300, China.
| | - Chuanming Hou
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang Agriculture and Forestry University, Lin'an, Zhejiang 311300, China.
| | - Jianqin Huang
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang Agriculture and Forestry University, Lin'an, Zhejiang 311300, China.
| | - Zhengjia Wang
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang Agriculture and Forestry University, Lin'an, Zhejiang 311300, China.
| | - Yingwu Xu
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang Agriculture and Forestry University, Lin'an, Zhejiang 311300, China.
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Phylogenomics reveals surprising sets of essential and dispensable clades of MIKCc-group MADS-box genes in flowering plants. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2015; 324:353-62. [DOI: 10.1002/jez.b.22598] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Accepted: 09/02/2014] [Indexed: 11/07/2022]
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Plackett ARG, Di Stilio VS, Langdale JA. Ferns: the missing link in shoot evolution and development. FRONTIERS IN PLANT SCIENCE 2015; 6:972. [PMID: 26594222 PMCID: PMC4635223 DOI: 10.3389/fpls.2015.00972] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Accepted: 10/23/2015] [Indexed: 05/02/2023]
Abstract
Shoot development in land plants is a remarkably complex process that gives rise to an extreme diversity of forms. Our current understanding of shoot developmental mechanisms comes almost entirely from studies of angiosperms (flowering plants), the most recently diverged plant lineage. Shoot development in angiosperms is based around a layered multicellular apical meristem that produces lateral organs and/or secondary meristems from populations of founder cells at its periphery. In contrast, non-seed plant shoots develop from either single apical initials or from a small population of morphologically distinct apical cells. Although developmental and molecular information is becoming available for non-flowering plants, such as the model moss Physcomitrella patens, making valid comparisons between highly divergent lineages is extremely challenging. As sister group to the seed plants, the monilophytes (ferns and relatives) represent an excellent phylogenetic midpoint of comparison for unlocking the evolution of shoot developmental mechanisms, and recent technical advances have finally made transgenic analysis possible in the emerging model fern Ceratopteris richardii. This review compares and contrasts our current understanding of shoot development in different land plant lineages with the aim of highlighting the potential role that the fern C. richardii could play in shedding light on the evolution of underlying genetic regulatory mechanisms.
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Affiliation(s)
- Andrew R. G. Plackett
- Department of Plant Sciences, University of OxfordOxford, UK
- *Correspondence: Andrew R. G. Plackett,
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Puranik S, Acajjaoui S, Conn S, Costa L, Conn V, Vial A, Marcellin R, Melzer R, Brown E, Hart D, Theißen G, Silva CS, Parcy F, Dumas R, Nanao M, Zubieta C. Structural basis for the oligomerization of the MADS domain transcription factor SEPALLATA3 in Arabidopsis. THE PLANT CELL 2014; 26:3603-15. [PMID: 25228343 PMCID: PMC4213154 DOI: 10.1105/tpc.114.127910] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 08/20/2014] [Accepted: 08/29/2014] [Indexed: 05/19/2023]
Abstract
In plants, MADS domain transcription factors act as central regulators of diverse developmental pathways. In Arabidopsis thaliana, one of the most central members of this family is SEPALLATA3 (SEP3), which is involved in many aspects of plant reproduction, including floral meristem and floral organ development. SEP3 has been shown to form homo and heterooligomeric complexes with other MADS domain transcription factors through its intervening (I) and keratin-like (K) domains. SEP3 function depends on its ability to form specific protein-protein complexes; however, the atomic level determinants of oligomerization are poorly understood. Here, we report the 2.5-Å crystal structure of a small portion of the intervening and the complete keratin-like domain of SEP3. The domains form two amphipathic alpha helices separated by a rigid kink, which prevents intramolecular association and presents separate dimerization and tetramerization interfaces comprising predominantly hydrophobic patches. Mutations to the tetramerization interface demonstrate the importance of highly conserved hydrophobic residues for tetramer stability. Atomic force microscopy was used to show SEP3-DNA interactions and the role of oligomerization in DNA binding and conformation. Based on these data, the oligomerization patterns of the larger family of MADS domain transcription factors can be predicted and manipulated based on the primary sequence.
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Affiliation(s)
- Sriharsha Puranik
- European Synchrotron Radiation Facility, Structural Biology Group, 38042 Grenoble, France
| | - Samira Acajjaoui
- European Synchrotron Radiation Facility, Structural Biology Group, 38042 Grenoble, France
| | - Simon Conn
- Centre for Cancer Biology, SA Pathology and the University of South Australia, Adelaide SA 5000, Australia
| | - Luca Costa
- European Synchrotron Radiation Facility, Structural Biology Group, 38042 Grenoble, France
| | - Vanessa Conn
- Centre for Cancer Biology, SA Pathology and the University of South Australia, Adelaide SA 5000, Australia
| | - Anthony Vial
- European Synchrotron Radiation Facility, Structural Biology Group, 38042 Grenoble, France
| | - Romain Marcellin
- European Synchrotron Radiation Facility, Structural Biology Group, 38042 Grenoble, France Faculté des Sciences de Montpellier, place Eugène Bataillon, 34095 Montpellier, France
| | - Rainer Melzer
- Department of Genetics, Friedrich Schiller University, 07737 Jena, Germany
| | - Elizabeth Brown
- European Synchrotron Radiation Facility, Structural Biology Group, 38042 Grenoble, France
| | - Darren Hart
- Université Grenoble Alpes, CNRS, Integrated Structural Biology Grenoble, Unit of Virus Host Cell Interactions, Unité Mixte Internationale 3265 (CNRS-EMBL-UJF), UMS 3518 (CNRS-CEA-UJF-EMBL), 38042 Grenoble, France
| | - Günter Theißen
- Department of Genetics, Friedrich Schiller University, 07737 Jena, Germany
| | - Catarina S Silva
- CNRS, Laboratoire de Physiologie Cellulaire and Végétale, UMR 5168, 38054 Grenoble, France Université Grenoble Alpes, Laboratoire de Physiologie Cellulaire et Végétale, F-38054 Grenoble, France Commissariat à l'Energie Atomique, Direction des Sciences du Vivant, Institut de Recherches en Technologies et Sciences pour le Vivant, Laboratoire de Physiologie Cellulaire et Végétale, F-38054 Grenoble, France INRA, Laboratoire de Physiologie Cellulaire et Végétale, USC1359, F-38054 Grenoble, France
| | - François Parcy
- CNRS, Laboratoire de Physiologie Cellulaire and Végétale, UMR 5168, 38054 Grenoble, France Université Grenoble Alpes, Laboratoire de Physiologie Cellulaire et Végétale, F-38054 Grenoble, France Commissariat à l'Energie Atomique, Direction des Sciences du Vivant, Institut de Recherches en Technologies et Sciences pour le Vivant, Laboratoire de Physiologie Cellulaire et Végétale, F-38054 Grenoble, France INRA, Laboratoire de Physiologie Cellulaire et Végétale, USC1359, F-38054 Grenoble, France
| | - Renaud Dumas
- CNRS, Laboratoire de Physiologie Cellulaire and Végétale, UMR 5168, 38054 Grenoble, France Université Grenoble Alpes, Laboratoire de Physiologie Cellulaire et Végétale, F-38054 Grenoble, France Commissariat à l'Energie Atomique, Direction des Sciences du Vivant, Institut de Recherches en Technologies et Sciences pour le Vivant, Laboratoire de Physiologie Cellulaire et Végétale, F-38054 Grenoble, France INRA, Laboratoire de Physiologie Cellulaire et Végétale, USC1359, F-38054 Grenoble, France
| | - Max Nanao
- European Molecular Biology Laboratory, Grenoble Outstation, 38042 Grenoble, France Unit for Virus Host-Cell Interactions, Université Grenoble Alpes-EMBL-CNRS, 38042 Grenoble, France
| | - Chloe Zubieta
- CNRS, Laboratoire de Physiologie Cellulaire and Végétale, UMR 5168, 38054 Grenoble, France Université Grenoble Alpes, Laboratoire de Physiologie Cellulaire et Végétale, F-38054 Grenoble, France Commissariat à l'Energie Atomique, Direction des Sciences du Vivant, Institut de Recherches en Technologies et Sciences pour le Vivant, Laboratoire de Physiologie Cellulaire et Végétale, F-38054 Grenoble, France INRA, Laboratoire de Physiologie Cellulaire et Végétale, USC1359, F-38054 Grenoble, France
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Rameneni JJ, Dhandapani V, Paul P, Im S, Oh MH, Choi SR, Lim YP. Genome-wide identification, characterization, and comparative phylogeny analysis of MADS-box transcription factors in Brassica rapa. Genes Genomics 2014. [DOI: 10.1007/s13258-014-0187-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Huang Q, Li W, Fan R, Chang Y. New MADS-box gene in fern: cloning and expression analysis of DfMADS1 from Dryopteris fragrans. PLoS One 2014; 9:e86349. [PMID: 24466046 PMCID: PMC3899247 DOI: 10.1371/journal.pone.0086349] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Accepted: 12/06/2013] [Indexed: 11/18/2022] Open
Abstract
MADS genes encode a family of transcription factors, some of which control the identities of floral organs in flowering plants. Most of the MADS-box genes in fern have been cloned and analyzed in model plants, such as Ceratopteris richardii and Ceratopteris pteridoides. In this study, a new MADS-box gene, DfMADS1(GU385475), was cloned from Dryopteris fragrans (L.) Schott to better understand the role of MADS genes in the evolution of floral organs. The full-length DfMADS1 cDNA was 973 bp in length with a 75bp 5′-UTR and a 169bp 3′-UTR. The DfMADS1 protein was predicted to contain a typical MIKC-type domain structure consisting of a MADS domain, a short I region, a K domain, and a C-terminal region. The DfMADS1 protein showed high homology with MADS box proteins from other ferns. Phylogenetic analysis revealed that DfMADS1 belongs to the CRM1-like subfamily. RT-PCR analysis indicated that DfMADS1 is expressed in both the gametophytes and the sporophytes of D. fragrans.
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Affiliation(s)
- Qingyang Huang
- Laboratory of Plant Research, College of Life sciences, Northeast Agricultural University, Harbin, Heilongjiang Province, P. R. China
- Institute of Natural Resources and Ecology, Heilongjiang Academy of Science, Harbin, Heilongjiang Province, P. R. China
| | - Wenhua Li
- Laboratory of Plant Research, College of Life sciences, Northeast Agricultural University, Harbin, Heilongjiang Province, P. R. China
| | - Ruifeng Fan
- Key Laboratory of Chinese Materia Medica (Ministry of Education), Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang Province, P. R. China
| | - Ying Chang
- Laboratory of Plant Research, College of Life sciences, Northeast Agricultural University, Harbin, Heilongjiang Province, P. R. China
- * E-mail:
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Tsai WC, Pan ZJ, Su YY, Liu ZJ. New insight into the regulation of floral morphogenesis. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2014; 311:157-82. [PMID: 24952917 DOI: 10.1016/b978-0-12-800179-0.00003-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The beauty and complexity of flowers have held the fascination of scientists for centuries, from Linnaeus, to Goethe, to Darwin, through to the present. During the past decade, enormous progress has been made in understanding the molecular regulation of flower morphogenesis. It seems likely that there are both highly conserved aspects to flower development in addition to significant differences in developmental patterning that can contribute to the unique morphologies of different species. Furthermore, floral development is attractive in that several key genes regulating fundamental processes have been identified. Crucial functional studies of floral organ identity genes in diverse taxa are allowing the real insight into the conservation of gene function, while findings on the genetic control of organ elaboration open up new avenues for investigation. These fundamentals of floral organ differentiation and growth are therefore an ideal subject for comparative analyses of flower development, which will lead to a better understanding of molecular mechanisms that control flower morphogenesis.
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Affiliation(s)
- Wen-Chieh Tsai
- Institute of Tropical Plant Sciences, National Cheng Kung University, Tainan, Taiwan; Orchid Research Center, National Cheng Kung University, Tainan, Taiwan; Department of Life Sciences, National Cheng Kung University, Tainan, Taiwan.
| | - Zhao-Jun Pan
- Department of Life Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Yong-Yu Su
- Shenzhen Key Laboratory for Orchid Conservation and Utilization, The National Orchid Conservation Center of China and The Orchid Conservation & Research Center of Shenzhen, Shenzhen, China; The Center for Biotechnology and BioMedicine, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
| | - Zhong-Jian Liu
- Shenzhen Key Laboratory for Orchid Conservation and Utilization, The National Orchid Conservation Center of China and The Orchid Conservation & Research Center of Shenzhen, Shenzhen, China; The Center for Biotechnology and BioMedicine, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China; College of Forestry, South China Agricultural University, Guangzhou, China.
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31
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Acajjaoui S, Zubieta C. Crystallization studies of the keratin-like domain from Arabidopsis thaliana SEPALLATA 3. Acta Crystallogr Sect F Struct Biol Cryst Commun 2013; 69:997-1000. [PMID: 23989147 PMCID: PMC3758147 DOI: 10.1107/s174430911302006x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 07/19/2013] [Indexed: 11/10/2022]
Abstract
In higher plants, the MADS-box genes encode a large family of transcription factors (TFs) involved in key developmental processes, most notably plant reproduction, flowering and floral organ development. SEPALLATA 3 (SEP3) is a member of the MADS TF family and plays a role in the development of the floral organs through the formation of multiprotein complexes with other MADS-family TFs. SEP3 is divided into four domains: the M (MADS) domain, involved in DNA binding and dimerization, the I (intervening) domain, a short domain involved in dimerization, the K (keratin-like) domain important for multimeric MADS complex formation and the C (C-terminal) domain, a largely unstructured region putatively important for higher-order complex formation. The entire K domain along with a portion of the I and C domains of SEP3 was crystallized using high-throughput robotic screening followed by optimization. The crystals belonged to space group P2(1)2(1)2, with unit-cell parameters a = 123.44, b = 143.07, c = 49.83 Å, and a complete data set was collected to 2.53 Å resolution.
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Affiliation(s)
- Samira Acajjaoui
- Structural Biology, European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, 38000 Grenoble, France
| | - Chloe Zubieta
- Structural Biology, European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, 38000 Grenoble, France
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32
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Barker EI, Ashton NW. A parsimonious model of lineage-specific expansion of MADS-box genes in Physcomitrella patens. PLANT CELL REPORTS 2013; 32:1161-77. [PMID: 23525745 DOI: 10.1007/s00299-013-1411-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Accepted: 03/01/2013] [Indexed: 05/24/2023]
Abstract
The MADS-box gene family expanded in the lineage leading to the moss, Physcomitrella patens , mainly as a result of polyploidisations and/or large-scale segmental duplication events and to a lesser extent by tandem duplications. Plant MADS-box genes comprise a large family best known for the roles of type II MIKC (C) genes in floral organogenesis, but also including type II MIKC* genes, some of which have been implicated in male gametophytic development, and type I genes, a few of which are involved in ontogeny of female gametophytes, seeds and embryos. Genome-wide analyses of the MADS-box family in angiosperms have revealed numeric predominance of type I and MIKC (C) genes and cross-species phylogenetic clustering of the Mα, Mβ and Mγ subtypes of type I genes and of 12 major subgroups of MIKC (C) genes. The genome sequence of Physcomitrella patens has facilitated investigation of its full complement of 26 MADS-box genes, including 6 MIKC (C) genes, 11 MIKC* genes, seven type I genes and two pseudogenes. A much higher degree of similarity in sequence and architecture within the MIKC (C) and MIKC* gene subtypes exists in Physcomitrella than in Arabidopsis. Furthermore, MADS-box and K-box sequence is highly conserved between the MIKC (C) and MIKC* subgroups in Physcomitrella. Nine MIKC* genes and two MIKC (C) genes are located in pairs or triplets on individual DNA scaffolds. Phylogenetic gene clustering, gene architectures and gene linkages (directly determined from examination of the genome sequence) underpin a parsimonious model of two tandem duplications and three segmental duplication events, which can account for lineage-specific expansion of the MADS-box gene family in Physcomitrella from 4 members to 26. Two of these segmental duplication events may be indicative of polyploidisations, one of which has been postulated previously.
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Affiliation(s)
- E I Barker
- Department of Biology, University of Regina, Regina, SK, S4S 0A2, Canada
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Abstract
Genes of the AGAMOUS subfamily have been shown to play crucial roles in reproductive organ identity determination, fruit, and seed development. They have been deeply studied in eudicot species and especially in Arabidopsis. Recently, the AGAMOUS subfamily of rice has been studied for their role in flower development and an enormous amount of data has been generated. In this review, we provide an overview of these data and discuss the conservation of gene functions between rice and Arabidopsis.
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Affiliation(s)
- Ludovico Dreni
- Department of Biosciences, Università degli Studi di Milano, via Celoria 26, 20133 Milan, Italy
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Gramzow L, Barker E, Schulz C, Ambrose B, Ashton N, Theißen G, Litt A. Selaginella Genome Analysis - Entering the "Homoplasy Heaven" of the MADS World. FRONTIERS IN PLANT SCIENCE 2012; 3:214. [PMID: 23049534 PMCID: PMC3442193 DOI: 10.3389/fpls.2012.00214] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 08/23/2012] [Indexed: 05/05/2023]
Abstract
In flowering plants, arguably the most significant transcription factors regulating development are MADS-domain proteins, encoded by Type I and Type II MADS-box genes. Type II genes are divided into the MIKC(C) and MIKC* groups. In angiosperms, these types and groups play distinct roles in the development of female gametophytes, embryos, and seeds (Type I); vegetative and floral tissues in sporophytes (MIKC(C)); and male gametophytes (MIKC*), but their functions in other plants are largely unknown. The complete set of MADS-box genes has been described for several angiosperms and a moss, Physcomitrella patens. Our examination of the complete genome sequence of a lycophyte, Selaginella moellendorffii, revealed 19 putative MADS-box genes (13 Type I, 3 MIKC(C), and 3 MIKC*). Our results suggest that the most recent common ancestor of vascular plants possessed at least two Type I and two Type II genes. None of the S. moellendorffii MIKC(C) genes were identified as orthologs of any floral organ identity genes. This strongly corroborates the view that the clades of floral organ identity genes originated in a common ancestor of seed plants after the lineage that led to lycophytes had branched off, and that expansion of MIKC(C) genes in the lineage leading to seed plants facilitated the evolution of their unique reproductive organs. The number of MIKC* genes and the ratio of MIKC* to MIKC(C) genes is lower in S. moellendorffii and angiosperms than in P. patens, correlated with reduction of the gametophyte in vascular plants. Our data indicate that Type I genes duplicated and diversified independently within lycophytes and seed plants. Our observations on MADS-box gene evolution echo morphological evolution since the two lineages of vascular plants appear to have arrived independently at similar body plans. Our annotation of MADS-box genes in S. moellendorffii provides the basis for functional studies to reveal the roles of this crucial gene family in basal vascular plants.
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Affiliation(s)
- Lydia Gramzow
- Department of Genetics, Friedrich Schiller University JenaJena, Germany
| | | | - Christian Schulz
- Department of Evolution and Biodiversity of Plants, Ruhr-University BochumBochum, Germany
| | | | - Neil Ashton
- Department of Biology, University of ReginaRegina, Canada
| | - Günter Theißen
- Department of Genetics, Friedrich Schiller University JenaJena, Germany
| | - Amy Litt
- The New York Botanical GardenBronx, NY, USA
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35
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Chen YY, Lee PF, Hsiao YY, Wu WL, Pan ZJ, Lee YI, Liu KW, Chen LJ, Liu ZJ, Tsai WC. C- and D-class MADS-box genes from Phalaenopsis equestris (Orchidaceae) display functions in gynostemium and ovule development. PLANT & CELL PHYSIOLOGY 2012; 53:1053-67. [PMID: 22499266 DOI: 10.1093/pcp/pcs048] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Gynostemium and ovule development in orchid are unique developmental processes in the plant kingdom. Characterization of C- and D-class MADS-box genes could help reveal the molecular mechanisms underlying gynostemium and ovule development in orchids. In this study, we isolated and characterized a C- and a D-class gene, PeMADS1 and PeMADS7, respectively, from Phalaenopsis equestris. These two genes showed parallel spatial and temporal expression profiles, which suggests their cooperation in gynostemium and ovule development. Furthermore, only PeMADS1 was ectopically expressed in the petals of the gylp (gynostemium-like petal) mutant, whose petals were transformed into gynostemium-like structures. Protein-protein interaction analyses revealed that neither PeMADS1 and PeMADS7 could form a homodimer or a heterodimer. An E-class protein was needed to bridge the interaction between these two proteins. A complementation test revealed that PeMADS1 could rescue the phenotype of the AG mutant. Overexpression of PeMADS7 in Arabidopsis caused typical phenotypes of the D-class gene family. Together, these results indicated that both C-class PeMADS1 and D-class PeMADS7 play important roles in orchid gynostemium and ovule development.
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MESH Headings
- Amino Acid Sequence
- DNA, Plant/genetics
- DNA, Plant/metabolism
- Gene Expression Profiling
- Gene Expression Regulation, Developmental
- Gene Expression Regulation, Plant
- Genes, Plant
- Genetic Complementation Test
- MADS Domain Proteins/genetics
- MADS Domain Proteins/metabolism
- Microscopy, Electron, Scanning
- Molecular Sequence Data
- Orchidaceae/anatomy & histology
- Orchidaceae/genetics
- Orchidaceae/growth & development
- Ovule/genetics
- Ovule/growth & development
- Ovule/ultrastructure
- Phenotype
- Phylogeny
- Plant Proteins/genetics
- Plant Proteins/metabolism
- Plants, Genetically Modified/anatomy & histology
- Plants, Genetically Modified/genetics
- Plants, Genetically Modified/growth & development
- Pollination
- Protein Interaction Mapping
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Affiliation(s)
- You-Yi Chen
- Institute of Tropical Plant Sciences, National Cheng Kung University, Tainan 701, Taiwan
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Pires ND, Dolan L. Morphological evolution in land plants: new designs with old genes. Philos Trans R Soc Lond B Biol Sci 2012; 367:508-18. [PMID: 22232763 PMCID: PMC3248709 DOI: 10.1098/rstb.2011.0252] [Citation(s) in RCA: 145] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The colonization and radiation of multicellular plants on land that started over 470 Ma was one of the defining events in the history of this planet. For the first time, large amounts of primary productivity occurred on the continental surface, paving the way for the evolution of complex terrestrial ecosystems and altering global biogeochemical cycles; increased weathering of continental silicates and organic carbon burial resulted in a 90 per cent reduction in atmospheric carbon dioxide levels. The evolution of plants on land was itself characterized by a series of radical transformations of their body plans that included the formation of three-dimensional tissues, de novo evolution of a multicellular diploid sporophyte generation, evolution of multicellular meristems, and the development of specialized tissues and organ systems such as vasculature, roots, leaves, seeds and flowers. In this review, we discuss the evolution of the genes and developmental mechanisms that drove the explosion of plant morphologies on land. Recent studies indicate that many of the gene families which control development in extant plants were already present in the earliest land plants. This suggests that the evolution of novel morphologies was to a large degree driven by the reassembly and reuse of pre-existing genetic mechanisms.
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Affiliation(s)
| | - Liam Dolan
- Department of Plant Sciences, University of Oxford, South Parks Road, Oxford OX1 3RB, UK
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37
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Kwantes M, Liebsch D, Verelst W. How MIKC* MADS-box genes originated and evidence for their conserved function throughout the evolution of vascular plant gametophytes. Mol Biol Evol 2011; 29:293-302. [PMID: 21813465 DOI: 10.1093/molbev/msr200] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Land plants have a remarkable life cycle that alternates between a diploid sporophytic and a haploid gametophytic generation, both of which are multicellular and changed drastically during evolution. Classical MIKC MADS-domain (MIKCC) transcription factors are famous for their role in sporophytic development and are considered crucial for its evolution. About the regulation of gametophyte development, in contrast, little is known. Recent evidence indicated that the closely related MIKC* MADS-domain proteins are important for the functioning of the Arabidopsis thaliana male gametophyte (pollen). Furthermore, also in bryophytes, several MIKC* genes are expressed in the haploid generation. Therefore, that MIKC* genes have a similar role in the evolution of the gametophytic phase as MIKCC genes have in the sporophyte is a tempting hypothesis. To get a comprehensive view of the involvement of MIKC* genes in gametophyte evolution, we isolated them from a broad variety of vascular plants, including the lycophyte Selaginella moellendorffii, the fern Ceratopteris richardii, and representatives of several flowering plant lineages. Phylogenetic analysis revealed an extraordinary conservation not found in MIKCC genes. Moreover, expression and interaction studies suggest that a conserved and characteristic network operates in the gametophytes of all tested model organisms. Additionally, we found that MIKC* genes probably evolved from an ancestral MIKCC-like gene by a duplication in the Keratin-like region. We propose that this event facilitated the independent evolution of MIKC* and MIKCC protein networks and argue that whereas MIKCC genes diversified and attained new functions, MIKC* genes retained a conserved role in the gametophyte during land plant evolution.
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Affiliation(s)
- Michiel Kwantes
- Department of Plant Breeding and Genetics, Max Planck Institute for Plant Breeding Research, Cologne, Germany.
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Shin MR, Seo SG, Kim JS, Joen SB, Kang SW, Lee GP, Kwon SY, Kim SH. Alteration of floral organ identity by over-expression of IbMADS3-1 in tobacco. Transgenic Res 2011; 20:365-76. [PMID: 20567900 DOI: 10.1007/s11248-010-9420-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2010] [Accepted: 06/08/2010] [Indexed: 10/19/2022]
Abstract
The MADS-box genes have been studied mainly in flower development by researching flower homeotic mutants. Most of the MADS-box genes isolated from plants are expressed exclusively in floral tissues, and some of their transcripts have been found in various vegetative tissues. The genes in the STMADS subfamily are important in the development of whole plants including roots, stems, leaves, and the plant vascular system. IbMADS3-1, which is in the STMADS subfamily, and which has been cloned in Ipomoea batatas (L.) Lam., is expressed in all vegetative tissues of the plant, particularly in white fibrous roots. Sequence similarity, besides the spatial and temporal expression patterns, enabled the definition of a novel MADS-box subfamily comprising STMADS16 and the other MADS-box genes in STMADS subfamily expressed specifically in vegetative tissues. Expression of IbMADS3-1 was manifest by the appearance of chlorophyll-containing petals and production of characteristic changes in organ identity carpel structure alterations and sepaloidy of the petals. In reverse transcription-polymerase chain reaction analysis with a number of genes known to be key regulators of floral organ development, the flowering promoter NFL1 was clearly reduced at the RNA level compared with wild type in transgenic line backgrounds. Moreover, NtMADS5 showed slight down-regulation compared with wild-type plants in transgenic lines. These results suggest that IbMADS3-1 could be a repressor of NFL1 located upstream of NtMADS5. IbMADS3-1 ectopic expression is suggested as a possible means during vegetative development by which the IbMADS3-1 gene may interfere with the floral developmental pathway.
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Affiliation(s)
- Mi-Rae Shin
- Department of Environmental Horticulture, University of Seoul, Seoul, 130-743, Korea
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39
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Englund M, Carlsbecker A, Engström P, Vergara-Silva F. Morphological “primary homology” and expression of AG -subfamily MADS-box genes in pines, podocarps, and yews. Evol Dev 2011; 13:171-81. [DOI: 10.1111/j.1525-142x.2011.00467.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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40
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Wang SY, Lee PF, Lee YI, Hsiao YY, Chen YY, Pan ZJ, Liu ZJ, Tsai WC. Duplicated C-class MADS-box genes reveal distinct roles in gynostemium development in Cymbidium ensifolium (Orchidaceae). PLANT & CELL PHYSIOLOGY 2011; 52:563-77. [PMID: 21278368 DOI: 10.1093/pcp/pcr015] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The orchid floral organs represent novel and effective structures for attracting pollination vectors. In addition, to avoid inbreeding, the androecium and gynoecium are united in a single structure termed the gynostemium. Identification of C-class MADS-box genes regulating reproductive organ development could help determine the level of homology with the current ABC model of floral organ identity in orchids. In this study, we isolated and characterized two C-class AGAMOUS-like genes, denoted CeMADS1 and CeMADS2, from Cymbidium ensifolium. These two genes showed distinct spatial and temporal expression profiles, which suggests their functional diversification during gynostemium development. Furthermore, the expression of CeMADS1 but not CeMADS2 was eliminated in the multitepal mutant whose gynostemium is replaced by a newly emerged flower, and this ecotopic flower continues to produce sepals and petals centripetally. Protein interaction relationships among CeMADS1, CeMADS2 and E-class PeMADS8 proteins were assessed by yeast two-hybrid analysis. Both CeMADS1 and CeMADS2 formed homodimers and heterodimers with each other and the E-class PeMADS protein. Furthermore, transgenic Arabidopsis plants overexpressing CeMADS1 or CeMADS2 showed limited growth of primary inflorescence. Thus, CeMADS1 may have a pivotal C function in reproductive organ development in C. ensifolium.
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Affiliation(s)
- Shih-Yu Wang
- Institute of Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
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41
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Wu W, Huang X, Cheng J, Li Z, de Folter S, Huang Z, Jiang X, Pang H, Tao S. Conservation and evolution in and among SRF- and MEF2-type MADS domains and their binding sites. Mol Biol Evol 2010; 28:501-11. [PMID: 20724380 DOI: 10.1093/molbev/msq214] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Serum response factor (SRF) and myocyte enhancer factor 2 (MEF2) represent two types of members of the MCM1, AGAMOUS, DEFICIENS, and SRF (MADS)-box transcription factor family present in animals and fungi. Each type has distinct biological functions, which are reflected by the distinct specificities of the proteins bound to their cognate DNA-binding sites and activated by their respective cofactors. However, little is known about the evolution of MADS domains and their DNA-binding sites. Here, we report on the conservation and evolution of the two types of MADS domains with their cognate DNA-binding sites by using phylogenetic analyses. First, there are great similarities between the two types of proteins with amino acid positions highly conserved, which are critical for binding to the DNA sequence and for the maintenance of the 3D structure. Second, in contrast to MEF2-type MADS domains, distinct conserved residues are present at some positions in SRF-type MADS domains, determining specificity and the configuration of the MADS domain bound to DNA sequences. Furthermore, the ancestor sequence of SRF- and MEF2-type MADS domains is more similar to MEF2-type MADS domains than to SRF-type MADS domains. In the case of DNA-binding sites, the MEF2 site has a T-rich core in one DNA sequence and an A-rich core in the reverse sequence as compared with the SRF site, no matter whether where either A or T is present in the two complementary sequences. In addition, comparing SRF sites in the human and the mouse genomes reveals that the evolution rate of CArG-boxes is faster in mouse than in human. Moreover, interestingly, a CArG-like sequence, which is probably functionless, could potentially mutate to a functional CArG-box that can be bound by SRF and vice versa. Together, these results significantly improve our knowledge on the conservation and evolution of the MADS domains and their binding sites to date and provide new insights to investigate the MADS family, which is not only on evolution of MADS factors but also on evolution of their binding sites and even on coevolution of MADS factors with their binding sites.
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Affiliation(s)
- Wenwu Wu
- College of Life Science, Northwest A&F University, Yangling, Shaanxi, China
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42
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Zobell O, Faigl W, Saedler H, Münster T. MIKC* MADS-box proteins: conserved regulators of the gametophytic generation of land plants. Mol Biol Evol 2010; 27:1201-11. [PMID: 20080864 DOI: 10.1093/molbev/msq005] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Land plants (embryophytes) are characterized by an alternation of two generations, the haploid gametophyte and the diploid sporophyte. The development of the small and simple male gametophyte of the flowering plant Arabidopsis (Arabidopsis thaliana) critically depends on the action of five MIKC* group MCM1-AGAMOUS-DEFICIENS-SRF-box (MADS-box) proteins. In this study, these MIKC* MADS-box genes were isolated from land plants with relatively large and complex gametophyte bodies, namely the bryophytes. We found that although the gene family expanded in the mosses Sphagnum subsecundum, Physcomitrella patens, and Funaria hygrometrica, only a single homologue, Marchantia polymorpha MADS-box gene 1 (MpMADS1), has been retained in the liverwort M. polymorpha. Liverworts are the earliest diverging land plants, and so a comparison of MpMADS1 with its angiosperm homologues addresses the molecular evolution of an embryophyte-specific transcription factor over the widest phylogenetic distance. MpMADS1 was found to form a homodimeric DNA-binding complex, which is in contrast to the Arabidopsis proteins that are functional only as heterodimeric complexes. The M. polymorpha homodimer, nevertheless, recognizes the same DNA sequences as its angiosperm counterparts and can functionally replace endogenous MIKC* complexes to a significant extent when heterologously expressed in Arabidopsis pollen. The 11 MIKC* homologues from the moss F. hygrometrica are highly and almost exclusively expressed in the gametophytic generation. Taken together, these findings suggest that MIKC* MADS-box proteins have largely preserved molecular roles in the gametophytic generation of land plants.
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Affiliation(s)
- Oliver Zobell
- Department of Molecular Plant Genetics, Max Planck Institute for Plant Breeding Research, Cologne, Germany.
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43
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Nardmann J, Reisewitz P, Werr W. Discrete shoot and root stem cell-promoting WUS/WOX5 functions are an evolutionary innovation of angiosperms. Mol Biol Evol 2009; 26:1745-55. [PMID: 19387013 DOI: 10.1093/molbev/msp084] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The morphologically diverse bodies of seed plants comprising gymnosperms and angiosperms, which separated some 350 Ma, grow by the activity of meristems containing stem cell niches. In the dicot model Arabidopsis thaliana, these are maintained by the stem cell-promoting functions of WUS and WUSCHEL-related homeobox 5 (WOX5) in the shoot and the root, respectively. Both genes are members of the WOX gene family, which has a monophyletic origin in green algae. The establishment of the WOX gene phylogeny from basal land plants through gymnosperms to basal and higher angiosperms reveals three major branches: a basal clade consisting of WOX13-related genes present in some green algae and throughout all land plant genomes, a second clade containing WOX8/9/11/12 homologues, and a modern clade restricted to seed plants. The analysis of the origin of the modern branch in two basal angiosperms (Amborella trichopoda and Nymphaea jamesoniana) and three gymnosperms (Pinus sylvestris, Ginkgo biloba, and Gnetum gnemon) shows that all members of the modern clade consistently found in monocots and dicots exist at the base of the angiosperm lineage, including WUS and WOX5 orthologues. In contrast, our analyses identify a single WUS/WOX5 homologue in all three gymnosperm genomes, consistent with a monophyletic origin in the last common ancestor of gymnosperms and angiosperms. Phylogenetic data, WUS- and WOX5-specific evolutionary signatures, as well as the expression pattern and stem cell-promoting function of the single gymnosperm WUS/WOX5 pro-orthologue in Arabidopsis indicate a gene duplication event followed by subfunctionalization at the base of angiosperms.
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Affiliation(s)
- Judith Nardmann
- Institut für Entwicklungsbiologie, Universität zu Köln, Köln, Germany
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44
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Xia YM, Gao XM, Li QJ. Identification and expression of floral organ homeotic genes from Alpinia oblongifolia (Zingiberaceae). JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2009; 51:155-166. [PMID: 19200154 DOI: 10.1111/j.1744-7909.2008.00782.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Current understanding of the classical ABC model of floral development has provided a new set of characters to evaluate floral evolution. However, what is still lacking is a clear assessment of this genetic program across monocots. Here, to investigate the evolution of members of class A and B genes in monocots, we report the sequence characteristic and transcript expression of three new MADS-box genes in Alpinia oblongifolia Hayata. Sequence and phylogenetic analysis reveals that these genes are FUL-like and AP3-like. Therefore, they were termed AoFL1, AoFL2 and AoAP3. AoFL1 contains the FUL motif, but AoFL2 lacks this motif. Their expression revealed by in situ hybridization may reflect the ancestral function of FUL-like genes in the specification of inflorescence and floral meristems. The AoAP3 gene contains two conserved motifs, the PI-derived and paleoAP3 motifs. The AoAP3 transcripts located to the corolla and stamen, and hybridization signals were detected in the central whorl. These expression patterns suggest that the functions of homologous organ identity genes are diversified in A. oblongifolia. The implications of these findings on the conservation of homologous gene function are discussed.
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Affiliation(s)
- Yong-Mei Xia
- Xishuangbanna Tropical Botanical Garden, the Chinese Academy of Sciences, Menglun, Mengla, Yunnan 666303, China
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45
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Singer SD, Ashton NW. MADS about MOSS. PLANT SIGNALING & BEHAVIOR 2009; 4:111-2. [PMID: 19649183 PMCID: PMC2637492 DOI: 10.4161/psb.4.2.7479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2008] [Accepted: 11/24/2008] [Indexed: 05/11/2023]
Abstract
Classic MIKC-type MADS-box genes (MIKC(c)) play diverse and crucial roles in angiosperm development, the most studied and best understood of which is the specification of floral organ identities. To shed light on how the flower evolved, phylogenetic and functional analyses of genes involved in its ontogeny, such as the MIKC(c) genes, must be undertaken in as broad a selection as possible of plants with disparate ancestries. Since little is known about the functions of these genes in non-seed plants, we investigated the developmental roles of a subset of the MIKC(c) genes present in the moss, Physcomitrella patens, which is positioned informatively near the base of the land plant evolutionary tree. We observed that transgenic lines possessing an antisense copy of a MIKC(c) gene characteristically displayed knocked-down expression of the corresponding native MIKC(c) gene as well as multiple diverse phenotypic alterations to the haploid gametophytic and diploid sporophytic generations of the life cycle. In this addendum, we re-examine our findings in the light of recent pertinent literature and provide additional data concerning the effects of simultaneously knocking out multiple MIKC(c) genes in this moss.
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Affiliation(s)
- S D Singer
- Department of Biology, University of Regina, Regina, Saskatchewan, Canada
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46
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Selection on Length Mutations After Frameshift Can Explain the Origin and Retention of the AP3/DEF-Like Paralogues in Impatiens. J Mol Evol 2008; 66:424-35. [DOI: 10.1007/s00239-008-9085-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2007] [Revised: 01/19/2008] [Accepted: 02/08/2008] [Indexed: 10/22/2022]
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47
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Kim SL, Lee S, Kim HJ, Nam HG, An G. OsMADS51 is a short-day flowering promoter that functions upstream of Ehd1, OsMADS14, and Hd3a. PLANT PHYSIOLOGY 2007; 145:1484-1494. [PMID: 17951465 PMCID: PMC2330307 DOI: 10.1104/pp.104.900258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Although flowering regulatory mechanisms have been extensively studied in Arabidopsis (Arabidopsis thaliana), those in other species have not been well elucidated. Here, we investigated the role of OsMADS51, a type I MADS-box gene in the short-day (SD) promotion pathway in rice (Oryza sativa). In SDs OsMADS51 null mutants flowered 2 weeks later than normal, whereas in long days loss of OsMADS51 had little effect on flowering. Transcript levels of three flowering regulators-Ehd1, OsMADS14, and Hd3a-were decreased in these mutants, whereas those of OsGI and Hd1 were unchanged. Ectopic expression of OsMADS51 caused flowering to occur about 7 d earlier only in SDs. In ectopic expression lines, transcript levels of Ehd1, OsMADS14, and Hd3a were increased, but those of OsGI and Hd1 remained the same. These results indicate that OsMADS51 is a flowering promoter, particularly in SDs, and that this gene functions upstream of Ehd1, OsMADS14, and Hd3a. To further investigate the relationship with other flowering promoters, we generated transgenic plants in which expression of Ehd1 or OsGI was suppressed. In Ehd1 RNA interference plants, OsMADS51 expression was not affected, supporting our conclusion that the MADS-box gene functions upstream of Ehd1. However, in OsGI antisense plants, the OsMADS51 transcript level was reduced. In addition, the circadian expression pattern for this MADS-box gene was similar to that for OsGI. These results demonstrate that OsMADS51 functions downstream of OsGI. In summary, OsMADS51 is a novel flowering promoter that transmits a SD promotion signal from OsGI to Ehd1.
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Affiliation(s)
- Song Lim Kim
- Division of Molecular and Life Sciences and Biotechnology Research Center, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
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48
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Kim SL, Lee S, Kim HJ, Nam HG, An G. OsMADS51 is a short-day flowering promoter that functions upstream of Ehd1, OsMADS14, and Hd3a. PLANT PHYSIOLOGY 2007; 145:1484-94. [PMID: 17951465 PMCID: PMC2151696 DOI: 10.1104/pp.107.103291] [Citation(s) in RCA: 151] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Although flowering regulatory mechanisms have been extensively studied in Arabidopsis (Arabidopsis thaliana), those in other species have not been well elucidated. Here, we investigated the role of OsMADS51, a type I MADS-box gene in the short-day (SD) promotion pathway in rice (Oryza sativa). In SDs OsMADS51 null mutants flowered 2 weeks later than normal, whereas in long days loss of OsMADS51 had little effect on flowering. Transcript levels of three flowering regulators-Ehd1, OsMADS14, and Hd3a-were decreased in these mutants, whereas those of OsGI and Hd1 were unchanged. Ectopic expression of OsMADS51 caused flowering to occur about 7 d earlier only in SDs. In ectopic expression lines, transcript levels of Ehd1, OsMADS14, and Hd3a were increased, but those of OsGI and Hd1 remained the same. These results indicate that OsMADS51 is a flowering promoter, particularly in SDs, and that this gene functions upstream of Ehd1, OsMADS14, and Hd3a. To further investigate the relationship with other flowering promoters, we generated transgenic plants in which expression of Ehd1 or OsGI was suppressed. In Ehd1 RNA interference plants, OsMADS51 expression was not affected, supporting our conclusion that the MADS-box gene functions upstream of Ehd1. However, in OsGI antisense plants, the OsMADS51 transcript level was reduced. In addition, the circadian expression pattern for this MADS-box gene was similar to that for OsGI. These results demonstrate that OsMADS51 functions downstream of OsGI. In summary, OsMADS51 is a novel flowering promoter that transmits a SD promotion signal from OsGI to Ehd1.
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Affiliation(s)
- Song Lim Kim
- Division of Molecular and Life Sciences and Biotechnology Research Center, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
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Theissen G, Melzer R. Molecular mechanisms underlying origin and diversification of the angiosperm flower. ANNALS OF BOTANY 2007; 100:603-19. [PMID: 17670752 PMCID: PMC2533597 DOI: 10.1093/aob/mcm143] [Citation(s) in RCA: 152] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
BACKGROUND Understanding the mode and mechanisms of the evolution of the angiosperm flower is a long-standing and central problem of evolutionary biology and botany. It has essentially remained unsolved, however. In contrast, considerable progress has recently been made in our understanding of the genetic basis of flower development in some extant model species. The knowledge that accumulated this way has been pulled together in two major hypotheses, termed the 'ABC model' and the 'floral quartet model'. These models explain how the identity of the different types of floral organs is specified during flower development by homeotic selector genes encoding transcription factors. SCOPE We intend to explain how the 'ABC model' and the 'floral quartet model' are now guiding investigations that help to understand the origin and diversification of the angiosperm flower. CONCLUSIONS Investigation of orthologues of class B and class C floral homeotic genes in gymnosperms suggest that bisexuality was one of the first innovations during the origin of the flower. The transition from dimer to tetramer formation of floral homeotic proteins after establishment of class E proteins may have increased cooperativity of DNA binding of the transcription factors controlling reproductive growth. That way, we hypothesize, better 'developmental switches' originated that facilitated the early evolution of the flower. Expression studies of ABC genes in basally diverging angiosperm lineages, monocots and basal eudicots suggest that the 'classical' ABC system known from core eudicots originated from a more fuzzy system with fading borders of gene expression and gradual transitions in organ identity, by sharpening of ABC gene expression domains and organ borders. Shifting boundaries of ABC gene expression may have contributed to the diversification of the angiosperm flower many times independently, as may have changes in interactions between ABC genes and their target genes.
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Affiliation(s)
- Guenter Theissen
- Friedrich-Schiller-Universitaet Jena, Lehrstuhl fuer Genetik, Philosophenweg 12, D-07743 Jena, Germany.
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Singer SD, Krogan NT, Ashton NW. Clues about the ancestral roles of plant MADS-box genes from a functional analysis of moss homologues. PLANT CELL REPORTS 2007; 26:1155-69. [PMID: 17390136 DOI: 10.1007/s00299-007-0312-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2006] [Revised: 01/22/2007] [Accepted: 01/22/2007] [Indexed: 05/14/2023]
Abstract
Classic MIKC-type MADS-box genes MIKC(c) genes) are indispensable elements in the genetic programming of pattern formation, including the segmental organisation of angiosperm flowers, in seed plants. Since little is known about the functions of MIKC(c) genes in non-seed plants, a functional analysis of moss MIKC(c) homologues was performed using the genetically amenable, simple model plant, Physcomitrella patens. Expression of moss homologues was knocked down using an antisense RNA approach or abolished by generating transformants with gene knockouts. The knocked down ("antisense") transformants displayed a multifaceted mutant phenotype comprising delayed gametangia formation, diminished sporophyte yield and, in the most extremely affected cases, abnormal sporophyte development and altered leaf morphogenesis. Knocked out transformants were phenotypically normal. Analysis of in situ MIKC(c) gene expression using transgenic strains containing MIKC(c) promoter-GUS fusions showed that these genes are generally expressed ubiquitously in vegetative and reproductive tissues. We conclude that MIKC(c) genes play significant roles in morphogenetic programming of the moss. Functional redundancy characterises some members of the gene group. Our findings provide clues concerning the ancestral roles of some MIKC(c) genes that may be represented in the genomes of diverse extant plant taxa.
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Affiliation(s)
- S D Singer
- Department of Biology, University of Regina, Regina, Saskatchewan, Canada
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