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Brant EJ, Eid A, Kannan B, Baloglu MC, Altpeter F. The extent of multiallelic, co-editing of LIGULELESS1 in highly polyploid sugarcane tunes leaf inclination angle and enables selection of the ideotype for biomass yield. PLANT BIOTECHNOLOGY JOURNAL 2024. [PMID: 38776398 DOI: 10.1111/pbi.14380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 04/09/2024] [Accepted: 05/03/2024] [Indexed: 05/25/2024]
Abstract
Sugarcane (Saccharum spp. hybrid) is a prime feedstock for commercial production of biofuel and table sugar. Optimizing canopy architecture for improved light capture has great potential for elevating biomass yield. LIGULELESS1 (LG1) is involved in leaf ligule and auricle development in grasses. Here, we report CRISPR/Cas9-mediated co-mutagenesis of up to 40 copies/alleles of the putative LG1 in highly polyploid sugarcane (2n = 100-120, x = 10-12). Next generation sequencing revealed co-editing frequencies of 7.4%-100% of the LG1 reads in 16 of the 78 transgenic lines. LG1 mutations resulted in a tuneable leaf angle phenotype that became more upright as co-editing frequency increased. Three lines with loss of function frequencies of ~12%, ~53% and ~95% of lg1 were selected following a randomized greenhouse trial and grown in replicated, multi-row field plots. The co-edited LG1 mutations were stably maintained in vegetative progenies and the extent of co-editing remained constant in field tested lines L26 and L35. Next generation sequencing confirmed the absence of potential off targets. The leaf inclination angle corresponded to light transmission into the canopy and tiller number. Line L35 displaying loss of function in ~12% of the lg1 NGS reads exhibited an 18% increase in dry biomass yield supported by a 56% decrease in leaf inclination angle, a 31% increase in tiller number, and a 25% increase in internode number. The scalable co-editing of LG1 in highly polyploid sugarcane allows fine-tuning of leaf inclination angle, enabling the selection of the ideotype for biomass yield.
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Affiliation(s)
- Eleanor J Brant
- Agronomy Department, Plant Molecular and Cellular Biology Program, Genetics Institute, University of Florida, IFAS, Gainesville, Florida, USA
- DOE Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, Florida, USA
| | - Ayman Eid
- Agronomy Department, Plant Molecular and Cellular Biology Program, Genetics Institute, University of Florida, IFAS, Gainesville, Florida, USA
- DOE Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, Florida, USA
| | - Baskaran Kannan
- Agronomy Department, Plant Molecular and Cellular Biology Program, Genetics Institute, University of Florida, IFAS, Gainesville, Florida, USA
- DOE Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, Florida, USA
| | - Mehmet Cengiz Baloglu
- Agronomy Department, Plant Molecular and Cellular Biology Program, Genetics Institute, University of Florida, IFAS, Gainesville, Florida, USA
- DOE Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, Florida, USA
| | - Fredy Altpeter
- Agronomy Department, Plant Molecular and Cellular Biology Program, Genetics Institute, University of Florida, IFAS, Gainesville, Florida, USA
- DOE Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, Florida, USA
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Li C, Iqbal MA. Leveraging the sugarcane CRISPR/Cas9 technique for genetic improvement of non-cultivated grasses. FRONTIERS IN PLANT SCIENCE 2024; 15:1369416. [PMID: 38601306 PMCID: PMC11004347 DOI: 10.3389/fpls.2024.1369416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 03/11/2024] [Indexed: 04/12/2024]
Abstract
Under changing climatic scenarios, grassland conservation and development have become imperative to impart functional sustainability to their ecosystem services. These goals could be effectively and efficiently achieved with targeted genetic improvement of native grass species. To the best of our literature search, very scant research findings are available pertaining to gene editing of non-cultivated grass species (switch grass, wild sugarcane, Prairie cordgrass, Bermuda grass, Chinese silver grass, etc.) prevalent in natural and semi-natural grasslands. Thus, to explore this novel research aspect, this study purposes that gene editing techniques employed for improvement of cultivated grasses especially sugarcane might be used for non-cultivated grasses as well. Our hypothesis behind suggesting sugarcane as a model crop for genetic improvement of non-cultivated grasses is the intricacy of gene editing owing to polyploidy and aneuploidy compared to other cultivated grasses (rice, wheat, barley, maize, etc.). Another reason is that genome editing protocols in sugarcane (x = 10-13) have been developed and optimized, taking into consideration the high level of genetic redundancy. Thus, as per our knowledge, this review is the first study that objectively evaluates the concept and functioning of the CRISPR (clustered regularly interspaced short palindromic repeats)/Cas9 technique in sugarcane regarding high versatility, target specificity, efficiency, design simplicity, and multiplexing capacity in order to explore novel research perspectives for gene editing of non-cultivated grasses against biotic and abiotic stresses. Additionally, pronounced challenges confronting sugarcane gene editing have resulted in the development of different variants (Cas9, Cas12a, Cas12b, and SpRY) of the CRISPR tool, whose technicalities have also been critically assessed. Moreover, different limitations of this technique that could emerge during gene editing of non-cultivated grass species have also been highlighted.
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Affiliation(s)
- Chunjia Li
- National Key Laboratory for Biological Breeding of Tropical Crops, Kunming, Yunnan, China
- Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences/Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan, Yunnan, China
| | - Muhammad Aamir Iqbal
- National Key Laboratory for Biological Breeding of Tropical Crops, Kunming, Yunnan, China
- Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences/Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan, Yunnan, China
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Maniero RA, Koltun A, Vitti M, Factor BG, de Setta N, Câmara AS, Lima JE, Figueira A. Identification and functional characterization of the sugarcane ( Saccharum spp.) AMT2-type ammonium transporter ScAMT3;3 revealed a presumed role in shoot ammonium remobilization. FRONTIERS IN PLANT SCIENCE 2023; 14:1299025. [PMID: 38098795 PMCID: PMC10720369 DOI: 10.3389/fpls.2023.1299025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/13/2023] [Indexed: 12/17/2023]
Abstract
Sugarcane (Saccharum spp.) is an important crop for sugar and bioethanol production worldwide. To maintain and increase sugarcane yields in marginal areas, the use of nitrogen (N) fertilizers is essential, but N overuse may result in the leaching of reactive N to the natural environment. Despite the importance of N in sugarcane production, little is known about the molecular mechanisms involved in N homeostasis in this crop, particularly regarding ammonium (NH4 +), the sugarcane's preferred source of N. Here, using a sugarcane bacterial artificial chromosome (BAC) library and a series of in silico analyses, we identified an AMMONIUM TRANSPORTER (AMT) from the AMT2 subfamily, sugarcane AMMONIUM TRANSPORTER 3;3 (ScAMT3;3), which is constitutively and highly expressed in young and mature leaves. To characterize its biochemical function, we ectopically expressed ScAMT3;3 in heterologous systems (Saccharomyces cerevisiae and Arabidopsis thaliana). The complementation of triple mep mutant yeast demonstrated that ScAMT3;3 is functional for NH3/H+ cotransport at high availability of NH4 + and under physiological pH conditions. The ectopic expression of ScAMT3;3 in the Arabidopsis quadruple AMT knockout mutant restored the transport capacity of 15N-NH4 + in roots and plant growth under specific N availability conditions, confirming the role of ScAMT3;3 in NH4 + transport in planta. Our results indicate that ScAMT3;3 belongs to the low-affinity transport system (Km 270.9 µM; Vmax 209.3 µmol g-1 root DW h-1). We were able to infer that ScAMT3;3 plays a presumed role in NH4 + source-sink remobilization in the shoots via phloem loading. These findings help to shed light on the functionality of a novel AMT2-type protein and provide bases for future research focusing on the improvement of sugarcane yield and N use efficiency.
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Affiliation(s)
- Rodolfo A. Maniero
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
| | - Alessandra Koltun
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
| | - Marielle Vitti
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
| | - Bruna G. Factor
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
| | - Nathalia de Setta
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, São Bernardo do Campo, SP, Brazil
| | - Amanda S. Câmara
- Genebank Department, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Seeland, Germany
| | - Joni E. Lima
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Antonio Figueira
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
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Moura Dias H, Vieira AP, de Jesus EM, de Setta N, Barros G, Van Sluys MA. Functional and comparative analysis of THI1 gene in grasses with a focus on sugarcane. PeerJ 2023; 11:e14973. [PMID: 37214086 PMCID: PMC10194071 DOI: 10.7717/peerj.14973] [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: 07/14/2022] [Accepted: 02/07/2023] [Indexed: 05/24/2023] Open
Abstract
De novo synthesis of thiamine (vitamin B1) in plants depends on the action of thiamine thiazole synthase, which synthesizes the thiazole ring, and is encoded by the THI1 gene. Here, we investigated the evolution and diversity of THI1 in Poaceae, where C4 and C3 photosynthetic plants co-evolved. An ancestral duplication of THI1 is observed in Panicoideae that remains in many modern monocots, including sugarcane. In addition to the two sugarcane copies (ScTHI1-1 and ScTHI1-2), we identified ScTHI1-2 alleles showing differences in their sequence, indicating divergence between ScTHI1-2a and ScTHI1-2b. Such variations are observed only in the Saccharum complex, corroborating the phylogeny. At least five THI1 genomic environments were found in Poaceae, two in sugarcane, M. sinensis, and S. bicolor. The THI1 promoter in Poaceae is highly conserved at 300 bp upstream of the start codon ATG and has cis-regulatory elements that putatively bind to transcription factors associated with development, growth, development and biological rhythms. An experiment set to compare gene expression levels in different tissues across the sugarcane R570 life cycle showed that ScTHI1-1 was expressed mainly in leaves regardless of age. Furthermore, ScTHI1 displayed relatively high expression levels in meristem and culm, which varied with the plant age. Finally, yeast complementation studies with THI4-defective strain demonstrate that only ScTHI1-1 and ScTHI1-2b isoforms can partially restore thiamine auxotrophy, albeit at a low frequency. Taken together, the present work supports the existence of multiple origins of THI1 harboring genomic regions in Poaceae with predicted functional redundancy. In addition, it questions the contribution of the levels of the thiazole ring in C4 photosynthetic plant tissues or potentially the relevance of the THI1 protein activity.
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Affiliation(s)
| | | | | | - Nathalia de Setta
- Botanica/IB, Universidade de Sao Paulo, Sao Paulo, Sao Paulo, Brazil
- Universidade Federal do ABC, Sao Bernardo do Campo, Sao Paulo, Brazil
| | - Gesiele Barros
- Botanica/IB, Universidade de Sao Paulo, Sao Paulo, Sao Paulo, Brazil
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Morais ERDC, de Medeiros NMC, da Silva FL, de Sousa IAL, de Oliveira IGB, Meneses CHSG, Scortecci KC. Redox homeostasis at SAM: a new role of HINT protein. PLANTA 2022; 257:12. [PMID: 36520227 DOI: 10.1007/s00425-022-04044-5] [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: 12/20/2021] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
ScHINT1 was identified at sugarcane SAM using subtractive libraries. Here, by bioinformatic tools, two-hybrid approach, and biochemical assays, we proposed that its role might be associated to control redox homeostasis. Such control is important for plant development and flowering transition, and this is ensured with some protein partners such as PAL and SBT that interact with ScHINT1. The shoot apical meristem transition from vegetative to reproductive is a crucial step for plants. In sugarcane (Saccharum spp.), this process is not well known, and it has an important impact on production due to field reduction. In view of this, ScHINT1 (Sugarcane HISTIDINE TRIAD NUCLEOTIDE-BINDING PROTEIN) was identified previously by subtractive cDNA libraries using Shoot Apical Meristem (SAM) by our group. This protein is a member of the HIT superfamily that was composed of hydrolase with an AMP site ligation. To better understand the role of ScHINT1 in sugarcane flowering, here its function in SAM was characterized using different approaches such as bioinformatics, two-hybrid assays, transgenic plants, and biochemical assays. ScHINT1 was conserved in plants, and it was grouped into four clades (HINT1, HINT2, HINT3, and HINT4). The 3D model proposed that ScHINT1 might be active as it was able to ligate to AMP subtract. Moreover, the two-hybrid approach identified two protein interactions: subtilase and phenylalanine ammonia-lyase. The evolutionary tree highlighted the relationships that each sequence has with specific subfamilies and different proteins. The 3D models constructed reveal structure conservation when compared with other PDB-related crystals, which indicates probable functional activity for the sugarcane models assessed. The interactome analysis showed a connection to different proteins that have antioxidative functions in apical meristems. Lastly, the transgenic plants with 35S::ScHINT1_AS (anti-sense orientation) produced more flowers than wild-type or 35S::ScHINT1_S (sense). Alpha-tocopherol and antioxidant enzymes measurement showed that their levels were higher in 35S::ScHINT_S plants than in 35S::ScHINT1_AS or wild-type plants. These results proposed that ScHINT1 might have an important role with other proteins in orchestrating this complex network for plant development and flowering.
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Affiliation(s)
- Emanoelly Roberta de Carvalho Morais
- Departamento de Biologia Celular e Genética - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
- Programa de Pós-Graduação em Bioquímica e Biologia Molecular, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
| | - Nathalia Maira Cabral de Medeiros
- Departamento de Biologia Celular e Genética - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
- Programa de Pós-Graduação em Bioquímica e Biologia Molecular, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
| | - Francinaldo Leite da Silva
- Departamento de Biologia Celular e Genética - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
| | - Isabel Andrade Lopes de Sousa
- Departamento de Biologia Celular e Genética - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
- Programa de Pós-Graduação em Bioquímica e Biologia Molecular, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
| | - Izamara Gesiele Bezerra de Oliveira
- Departamento de Biologia - Centro de Ciências Biológicas e da Saúde/Programa de Pós-Graduação em Ciências Agrárias, Universidade Estadual da Paraíba, Rua Baraúnas, 351, Bairro Universitário, Campina Grande, PB, 58429-500, Brazil
| | - Carlos Henrique Salvino Gadelha Meneses
- Departamento de Biologia - Centro de Ciências Biológicas e da Saúde/Programa de Pós-Graduação em Ciências Agrárias, Universidade Estadual da Paraíba, Rua Baraúnas, 351, Bairro Universitário, Campina Grande, PB, 58429-500, Brazil
| | - Katia Castanho Scortecci
- Departamento de Biologia Celular e Genética - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil.
- Programa de Pós-Graduação em Bioquímica e Biologia Molecular, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil.
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Koltun A, Maniero RA, Vitti M, de Setta N, Giehl RFH, Lima JE, Figueira A. Functional characterization of the sugarcane ( Saccharum spp.) ammonium transporter AMT2;1 suggests a role in ammonium root-to-shoot translocation. FRONTIERS IN PLANT SCIENCE 2022; 13:1039041. [PMID: 36466275 PMCID: PMC9716016 DOI: 10.3389/fpls.2022.1039041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 10/31/2022] [Indexed: 06/17/2023]
Abstract
AMMONIUM TRANSPORTER/METHYLAMMONIUM PERMEASE/RHESUS (AMT) family members transport ammonium across membranes in all life domains. Plant AMTs can be categorized into AMT1 and AMT2 subfamilies. Functional studies of AMTs, particularly AMT1-type, have been conducted using model plants but little is known about the function of AMTs from crops. Sugarcane (Saccharum spp.) is a major bioenergy crop that requires heavy nitrogen fertilization but depends on a low carbon-footprint for competitive sustainability. Here, we identified and functionally characterized sugarcane ScAMT2;1 by complementing ammonium uptake-defective mutants of Saccharomyces cerevisiae and Arabidopsis thaliana. Reporter gene driven by the ScAMT2;1 promoter in A. thaliana revealed preferential expression in the shoot vasculature and root endodermis/pericycle according to nitrogen availability and source. Arabidopsis quadruple mutant plants expressing ScAMT2;1 driven by the CaMV35S promoter or by a sugarcane endogenous promoter produced significantly more biomass than mutant plants when grown in NH4 + and showed more 15N-ammonium uptake by roots and nitrogen translocation to shoots. In A. thaliana, ScAMT2;1 displayed a Km of 90.17 µM and Vmax of 338.99 µmoles h-1 g-1 root DW. Altogether, our results suggest that ScAMT2;1 is a functional high-affinity ammonium transporter that might contribute to ammonium uptake and presumably to root-to-shoot translocation under high NH4 + conditions.
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Affiliation(s)
- Alessandra Koltun
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
| | - Rodolfo A. Maniero
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
| | - Marielle Vitti
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
| | - Nathalia de Setta
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, São Bernardo do Campo, SP, Brazil
- Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Ricardo F. H. Giehl
- Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany
| | - Joni E. Lima
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
- Departamento de Botânica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Antonio Figueira
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, Brazil
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Meena MR, Appunu C, Arun Kumar R, Manimekalai R, Vasantha S, Krishnappa G, Kumar R, Pandey SK, Hemaprabha G. Recent Advances in Sugarcane Genomics, Physiology, and Phenomics for Superior Agronomic Traits. Front Genet 2022; 13:854936. [PMID: 35991570 PMCID: PMC9382102 DOI: 10.3389/fgene.2022.854936] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 05/26/2022] [Indexed: 11/13/2022] Open
Abstract
Advances in sugarcane breeding have contributed significantly to improvements in agronomic traits and crop yield. However, the growing global demand for sugar and biofuel in the context of climate change requires further improvements in cane and sugar yields. Attempts to achieve the desired rates of genetic gain in sugarcane by conventional breeding means are difficult as many agronomic traits are genetically complex and polygenic, with each gene exerting small effects. Unlike those of many other crops, the sugarcane genome is highly heterozygous due to its autopolyploid nature, which further hinders the development of a comprehensive genetic map. Despite these limitations, many superior agronomic traits/genes for higher cane yield, sugar production, and disease/pest resistance have been identified through the mapping of quantitative trait loci, genome-wide association studies, and transcriptome approaches. Improvements in traits controlled by one or two loci are relatively easy to achieve; however, this is not the case for traits governed by many genes. Many desirable phenotypic traits are controlled by quantitative trait nucleotides (QTNs) with small and variable effects. Assembling these desired QTNs by conventional breeding methods is time consuming and inefficient due to genetic drift. However, recent developments in genomics selection (GS) have allowed sugarcane researchers to select and accumulate desirable alleles imparting superior traits as GS is based on genomic estimated breeding values, which substantially increases the selection efficiency and genetic gain in sugarcane breeding programs. Next-generation sequencing techniques coupled with genome-editing technologies have provided new vistas in harnessing the sugarcane genome to look for desirable agronomic traits such as erect canopy, leaf angle, prolonged greening, high biomass, deep root system, and the non-flowering nature of the crop. Many desirable cane-yielding traits, such as single cane weight, numbers of tillers, numbers of millable canes, as well as cane quality traits, such as sucrose and sugar yield, have been explored using these recent biotechnological tools. This review will focus on the recent advances in sugarcane genomics related to genetic gain and the identification of favorable alleles for superior agronomic traits for further utilization in sugarcane breeding programs.
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Affiliation(s)
- Mintu Ram Meena
- Regional Centre, ICAR-Sugarcane Breeding Institute, Karnal, India
- *Correspondence: Mintu Ram Meena, ; Chinnaswamy Appunu,
| | - Chinnaswamy Appunu
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
- *Correspondence: Mintu Ram Meena, ; Chinnaswamy Appunu,
| | - R. Arun Kumar
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | | | - S. Vasantha
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | | | - Ravinder Kumar
- Regional Centre, ICAR-Sugarcane Breeding Institute, Karnal, India
| | - S. K. Pandey
- Regional Centre, ICAR-Sugarcane Breeding Institute, Karnal, India
| | - G. Hemaprabha
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
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de Oliveira LP, Navarro BV, de Jesus Pereira JP, Lopes AR, Martins MCM, Riaño-Pachón DM, Buckeridge MS. Bioinformatic analyses to uncover genes involved in trehalose metabolism in the polyploid sugarcane. Sci Rep 2022; 12:7516. [PMID: 35525890 PMCID: PMC9079074 DOI: 10.1038/s41598-022-11508-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 03/22/2022] [Indexed: 11/09/2022] Open
Abstract
Trehalose-6-phosphate (T6P) is an intermediate of trehalose biosynthesis that plays an essential role in plant metabolism and development. Here, we comprehensively analyzed sequences from enzymes of trehalose metabolism in sugarcane, one of the main crops used for bioenergy production. We identified protein domains, phylogeny, and in silico expression levels for all classes of enzymes. However, post-translational modifications and residues involved in catalysis and substrate binding were analyzed only in trehalose-6-phosphate synthase (TPS) sequences. We retrieved 71 putative full-length TPS, 93 trehalose-6-phosphate phosphatase (TPP), and 3 trehalase (TRE) of sugarcane, showing all their conserved domains, respectively. Putative TPS (Classes I and II) and TPP sugarcane sequences were categorized into well-known groups reported in the literature. We measured the expression levels of the sequences from one sugarcane leaf transcriptomic dataset. Furthermore, TPS Class I has specific N-glycosylation sites inserted in conserved motifs and carries catalytic and binding residues in its TPS domain. Some of these residues are mutated in TPS Class II members, which implies loss of enzyme activity. Our approach retrieved many homo(eo)logous sequences for genes involved in trehalose metabolism, paving the way to discover the role of T6P signaling in sugarcane.
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Affiliation(s)
- Lauana Pereira de Oliveira
- Laboratório de Fisiologia Ecológica de Plantas, Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil.,Instituto Nacional de Ciência e Tecnologia do Bioetanol, São Paulo, Brazil
| | - Bruno Viana Navarro
- Laboratório de Fisiologia Ecológica de Plantas, Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil.,Instituto Nacional de Ciência e Tecnologia do Bioetanol, São Paulo, Brazil
| | - João Pedro de Jesus Pereira
- Laboratório de Fisiologia Ecológica de Plantas, Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil.,Instituto Nacional de Ciência e Tecnologia do Bioetanol, São Paulo, Brazil
| | | | - Marina C M Martins
- Laboratório de Fisiologia Ecológica de Plantas, Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil.,Instituto Nacional de Ciência e Tecnologia do Bioetanol, São Paulo, Brazil
| | - Diego Mauricio Riaño-Pachón
- Laboratório de Biologia Computacional, Centro de Energia Nuclear na Agricultura, Evolutiva e de Sistemas, Universidade de São Paulo, São Paulo, Brazil. .,Instituto Nacional de Ciência e Tecnologia do Bioetanol, São Paulo, Brazil.
| | - Marcos Silveira Buckeridge
- Laboratório de Fisiologia Ecológica de Plantas, Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil. .,Instituto Nacional de Ciência e Tecnologia do Bioetanol, São Paulo, Brazil.
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9
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Liu K, Wang X, Liu H, Wu J, Liang F, Li S, Zhang J, Peng X. OsAT1, an anion transporter, negatively regulates grain size and yield in rice. PHYSIOLOGIA PLANTARUM 2022; 174:e13692. [PMID: 35482934 DOI: 10.1111/ppl.13692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/22/2022] [Accepted: 04/22/2022] [Indexed: 06/14/2023]
Abstract
Improving the grain yield of rice is a central goal of basic and applied scientific research. Here, we identified an anion transporter, OsAT1, localized in the endoplasmic reticulum and Golgi. OsAT1 is highly expressed in flag, stem, and sheath as monitored using qRT-PCR and pOsAT1::GUS. Thousand-grain weight, grain weight per plant, and content of starch were significantly increased in OsAT1 knock-down mutants (OsAT1-Ri) but significantly decreased in OsAT1 overexpressed lines (OsAT1-OE). In addition, the grain weight per plant increased by 6.17% to 6.78% in OsAT1-RNAi lines, whereas it decreased by 45.93% to 46.76% in OsAT1-OE lines, compared to wild-type. Moreover, the copper content was noticeably reduced in flag leaf of OsAT1-Ri lines and increased in OsAT1-OE lines. RNA-sequencing analysis of OsAT1-OE lines revealed that the genes related to starch biosynthesis and metabolism pathway were enriched in the down-regulated category. Thus, our results suggest that knock-down of OsAT1 in rice possibly reduces copper accumulation and improves the accumulation of storage starch, hence, increasing the grain size and weight. OsAT1 may be a useful gene to consider for cereal breeding programs.
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Affiliation(s)
- Kun Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Xin Wang
- Key Laboratory of Molecular Biology and Gene Engineering of Jiangxi Province, School of Life Sciences, Nanchang University, Nanchang, China
| | - Hengchen Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Jiarui Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Feng Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Shaobo Li
- Key Laboratory of Molecular Biology and Gene Engineering of Jiangxi Province, School of Life Sciences, Nanchang University, Nanchang, China
| | - Jianjun Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Xinxiang Peng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- College of Life Sciences, South China Agricultural University, Guangzhou, China
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10
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Wen S, Neuhaus HE, Cheng J, Bie Z. Contributions of sugar transporters to crop yield and fruit quality. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:2275-2289. [PMID: 35139196 DOI: 10.1093/jxb/erac043] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 02/04/2022] [Indexed: 05/09/2023]
Abstract
The flux, distribution, and storage of soluble sugars regulate crop yield in terms of starch, oil, protein, and total carbohydrates, and affect the quality of many horticultural products. Sugar transporters contribute to phloem loading and unloading. The mechanisms of phloem loading have been studied in detail, but the complex and diverse mechanisms of phloem unloading and sugar storage in sink organs are less explored. Unloading and subsequent transport mechanisms for carbohydrates vary in different sink organs. Analyzing the transport and storage mechanisms of carbohydrates in important storage organs, such as cereal seeds, fruits, or stems of sugarcane, will provide information for genetic improvements to increase crop yield and fruit quality. This review discusses current research progress on sugar transporters involved in carbohydrate unloading and storage in sink organs. The roles of sugar transporters in crop yield and the accumulation of sugars are also discussed to highlight their contribution to efficient breeding.
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Affiliation(s)
- Suying Wen
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University and Key Laboratory of Horticultural Plant Biology, Ministry of Education, Wuhan, 430070, PR China
| | - H Ekkehard Neuhaus
- Plant Physiology, University of Kaiserslautern, D-67653 Kaiserslautern, Germany
| | - Jintao Cheng
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University and Key Laboratory of Horticultural Plant Biology, Ministry of Education, Wuhan, 430070, PR China
| | - Zhilong Bie
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University and Key Laboratory of Horticultural Plant Biology, Ministry of Education, Wuhan, 430070, PR China
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11
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A comprehensive molecular cytogenetic analysis of the genome architecture in modern sugarcane cultivars. Chromosome Res 2022; 30:29-41. [PMID: 34988746 DOI: 10.1007/s10577-021-09680-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 11/15/2021] [Accepted: 11/28/2021] [Indexed: 01/09/2023]
Abstract
Modern sugarcane cultivars are derived from the hybridization of Saccharum officinarum (2n = 80) and S. spontaneum (2n = 40-128), leading to a variety of complex genomes with highly polyploid and varied chromosome structures. These complex genomes have hindered deciphering the genome structure and marker-assisted selection in sugarcane breeding. Ten cultivars were analyzed by fluorescence in situ hybridization adopting chromosome painting and S. spontaneum-specific probes. The results showed six types of chromosomes in the studied cultivars, including S. spontaneum or S. officinarum chromosomes, interspecific recombinations from homoeologous or nonhomoeologous chromosomes, and translocations of S. spontaneum or S. officinarum chromosomes. The results showed unexpectedly high proportions of interspecific recombinations in these cultivars (11.9-40.9%), which renew our knowledge that less than 13% of chromosomes result from interspecific exchanges. Also, the results showed a high frequency of translocations (an average of 2.15 translocations per chromosome) between S. officinarum chromosomes. The diverse types of chromosomes in cultivars imply that hybrid gametes of S. spontaneum and S. officinarum may form unusual chromosome pairs, including homoeologous or nonhomoeologous chromosomes either between or within S. spontaneum and S. officinarum. Moreover, we consistently observed 11 or 12 copies for the four studied chromosomes, i.e., chromosomes 1, 2, 7, and 8, suggesting steady transmission during the breeding program. By comparison, we found a relatively fewer copies of S. spontaneum chromosome 1 than those of S. spontaneum chromosomes 2, 7, and 8. These results provide deep insights into the structure of cultivars and may facilitate chromosome-assisted selection in sugarcane breeding.
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Ramasamy M, Damaj MB, Vargas-Bautista C, Mora V, Liu J, Padilla CS, Irigoyen S, Saini T, Sahoo N, DaSilva JA, Mandadi KK. A Sugarcane G-Protein-Coupled Receptor, ShGPCR1, Confers Tolerance to Multiple Abiotic Stresses. FRONTIERS IN PLANT SCIENCE 2021; 12:745891. [PMID: 35295863 PMCID: PMC8919185 DOI: 10.3389/fpls.2021.745891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/14/2021] [Indexed: 06/14/2023]
Abstract
Sugarcane (Saccharum spp.) is a prominent source of sugar and serves as bioenergy/biomass feedstock globally. Multiple biotic and abiotic stresses, including drought, salinity, and cold, adversely affect sugarcane yield. G-protein-coupled receptors (GPCRs) are components of G-protein-mediated signaling affecting plant growth, development, and stress responses. Here, we identified a GPCR-like protein (ShGPCR1) from sugarcane and energy cane (Saccharum spp. hybrids) and characterized its function in conferring tolerance to multiple abiotic stresses. ShGPCR1 protein sequence contained nine predicted transmembrane (TM) domains connected by four extracellular and four intracellular loops, which could interact with various ligands and heterotrimeric G proteins in the cells. ShGPCR1 sequence displayed other signature features of a GPCR, such as a putative guanidine triphosphate (GTP)-binding domain, as well as multiple myristoylation and protein phosphorylation sites, presumably important for its biochemical function. Expression of ShGPCR1 was upregulated by drought, salinity, and cold stresses. Subcellular imaging and calcium (Ca2+) measurements revealed that ShGPCR1 predominantly localized to the plasma membrane and enhanced intracellular Ca2+ levels in response to GTP, respectively. Furthermore, constitutive overexpression of ShGPCR1 in sugarcane conferred tolerance to the three stressors. The stress-tolerance phenotype of the transgenic lines corresponded with activation of multiple drought-, salinity-, and cold-stress marker genes, such as Saccharum spp. LATE EMBRYOGENESIS ABUNDANT, DEHYDRIN, DROUGHT RESPONSIVE 4, GALACTINOL SYNTHASE, ETHYLENE RESPONSIVE FACTOR 3, SALT OVERLY SENSITIVE 1, VACUOLAR Na+/H+ ANTIPORTER 1, NAM/ATAF1/2/CUC2, COLD RESPONSIVE FACTOR 2, and ALCOHOL DEHYDROGENASE 3. We suggest that ShGPCR1 plays a key role in conferring tolerance to multiple abiotic stresses, and the engineered lines may be useful to enhance sugarcane production in marginal environments with fewer resources.
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Affiliation(s)
- Manikandan Ramasamy
- Texas A&M AgriLife Research and Extension Center, Weslaco, TX, United States
| | - Mona B. Damaj
- Texas A&M AgriLife Research and Extension Center, Weslaco, TX, United States
| | | | - Victoria Mora
- Texas A&M AgriLife Research and Extension Center, Weslaco, TX, United States
| | - Jiaxing Liu
- Texas A&M AgriLife Research and Extension Center, Weslaco, TX, United States
| | - Carmen S. Padilla
- Texas A&M AgriLife Research and Extension Center, Weslaco, TX, United States
| | - Sonia Irigoyen
- Texas A&M AgriLife Research and Extension Center, Weslaco, TX, United States
| | - Tripti Saini
- Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX, United States
| | - Nirakar Sahoo
- Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX, United States
| | - Jorge A. DaSilva
- Texas A&M AgriLife Research and Extension Center, Weslaco, TX, United States
- Department of Soil and Crop Sciences, Texas A&M University, College Station, TX, United States
| | - Kranthi K. Mandadi
- Texas A&M AgriLife Research and Extension Center, Weslaco, TX, United States
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, United States
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13
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Yan H, Zhou H, Luo H, Fan Y, Zhou Z, Chen R, Luo T, Li X, Liu X, Li Y, Qiu L, Wu J. Characterization of full-length transcriptome in Saccharum officinarum and molecular insights into tiller development. BMC PLANT BIOLOGY 2021; 21:228. [PMID: 34022806 PMCID: PMC8140441 DOI: 10.1186/s12870-021-02989-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 04/27/2021] [Indexed: 05/23/2023]
Abstract
BACKGROUND Although extensive breeding efforts are ongoing in sugarcane (Saccharum officinarum L.), the average yield is far below the theoretical potential. Tillering is an important component of sugarcane yield, however, the molecular mechanism underlying tiller development is still elusive. The limited genomic data in sugarcane, particularly due to its complex and large genome, has hindered in-depth molecular studies. RESULTS Herein, we generated full-length (FL) transcriptome from developing leaf and tiller bud samples based on PacBio Iso-Seq. In addition, we performed RNA-seq from tiller bud samples at three developmental stages (T0, T1 and T2) to uncover key genes and biological pathways involved in sugarcane tiller development. In total, 30,360 and 20,088 high-quality non-redundant isoforms were identified in leaf and tiller bud samples, respectively, representing 41,109 unique isoforms in sugarcane. Likewise, we identified 1063 and 1037 alternative splicing events identified in leaf and tiller bud samples, respectively. We predicted the presence of coding sequence for 40,343 isoforms, 98% of which was successfully annotated. Comparison with previous FL transcriptomes in sugarcane revealed 2963 unreported isoforms. In addition, we characterized 14,946 SSRs from 11,700 transcripts and 310 lncRNAs. By integrating RNA-seq with the FL transcriptome, 468 and 57 differentially expressed genes (DEG) were identified in T1vsT0 and T2vsT0, respectively. Strong up-regulation of several pyruvate phosphate dikinase and phosphoenolpyruvate carboxylase genes suggests enhanced carbon fixation and protein synthesis to facilitate tiller growth. Similarly, up-regulation of linoleate 9S-lipoxygenase and lipoxygenase genes in the linoleic acid metabolism pathway suggests high synthesis of key oxylipins involved in tiller growth and development. CONCLUSIONS Collectively, we have enriched the genomic data available in sugarcane and provided candidate genes for manipulating tiller formation and development, towards productivity enhancement in sugarcane.
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Affiliation(s)
- Haifeng Yan
- Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, and Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, East Daxue Road 172, Nanning, 530004, Guangxi, China
| | - Huiwen Zhou
- Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, and Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, East Daxue Road 172, Nanning, 530004, Guangxi, China
| | - Hanmin Luo
- Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, and Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, East Daxue Road 172, Nanning, 530004, Guangxi, China
| | - Yegeng Fan
- Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, and Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, East Daxue Road 172, Nanning, 530004, Guangxi, China
| | - Zhongfeng Zhou
- Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, and Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, East Daxue Road 172, Nanning, 530004, Guangxi, China
| | - Rongfa Chen
- Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, and Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, East Daxue Road 172, Nanning, 530004, Guangxi, China
| | - Ting Luo
- Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, and Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, East Daxue Road 172, Nanning, 530004, Guangxi, China
| | - Xujuan Li
- Sugarcane Research Institute of Yunnan Academy of Agricultural Sciences, East Lingquan Road 172, Kaiyun, 661600, Yunnan, China
| | - Xinlong Liu
- Sugarcane Research Institute of Yunnan Academy of Agricultural Sciences, East Lingquan Road 172, Kaiyun, 661600, Yunnan, China
| | - Yangrui Li
- Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, and Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, East Daxue Road 172, Nanning, 530004, Guangxi, China
| | - Lihang Qiu
- Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, and Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, East Daxue Road 172, Nanning, 530004, Guangxi, China.
| | - Jianming Wu
- Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, and Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, East Daxue Road 172, Nanning, 530004, Guangxi, China.
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14
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Pompidor N, Charron C, Hervouet C, Bocs S, Droc G, Rivallan R, Manez A, Mitros T, Swaminathan K, Glaszmann JC, Garsmeur O, D’Hont A. Three founding ancestral genomes involved in the origin of sugarcane. ANNALS OF BOTANY 2021; 127:827-840. [PMID: 33637991 PMCID: PMC8103802 DOI: 10.1093/aob/mcab008] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 02/25/2021] [Indexed: 05/11/2023]
Abstract
BACKGROUND AND AIMS Modern sugarcane cultivars (Saccharum spp.) are high polyploids, aneuploids (2n = ~12x = ~120) derived from interspecific hybridizations between the domesticated sweet species Saccharum officinarum and the wild species S. spontaneum. METHODS To analyse the architecture and origin of such a complex genome, we analysed the sequences of all 12 hom(oe)ologous haplotypes (BAC clones) from two distinct genomic regions of a typical modern cultivar, as well as the corresponding sequence in Miscanthus sinense and Sorghum bicolor, and monitored their distribution among representatives of the Saccharum genus. KEY RESULTS The diversity observed among haplotypes suggested the existence of three founding genomes (A, B, C) in modern cultivars, which diverged between 0.8 and 1.3 Mya. Two genomes (A, B) were contributed by S. officinarum; these were also found in its wild presumed ancestor S. robustum, and one genome (C) was contributed by S. spontaneum. These results suggest that S. officinarum and S. robustum are derived from interspecific hybridization between two unknown ancestors (A and B genomes). The A genome contributed most haplotypes (nine or ten) while the B and C genomes contributed one or two haplotypes in the regions analysed of this typical modern cultivar. Interspecific hybridizations likely involved accessions or gametes with distinct ploidy levels and/or were followed by a series of backcrosses with the A genome. The three founding genomes were found in all S. barberi, S. sinense and modern cultivars analysed. None of the analysed accessions contained only the A genome or the B genome, suggesting that representatives of these founding genomes remain to be discovered. CONCLUSIONS This evolutionary model, which combines interspecificity and high polyploidy, can explain the variable chromosome pairing affinity observed in Saccharum. It represents a major revision of the understanding of Saccharum diversity.
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Affiliation(s)
- Nicolas Pompidor
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Carine Charron
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Catherine Hervouet
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Stéphanie Bocs
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Gaëtan Droc
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Ronan Rivallan
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Aurore Manez
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Therese Mitros
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA
| | | | - Jean-Christophe Glaszmann
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Olivier Garsmeur
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Angélique D’Hont
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
- For correspondence. E-mail
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15
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Eid A, Mohan C, Sanchez S, Wang D, Altpeter F. Multiallelic, Targeted Mutagenesis of Magnesium Chelatase With CRISPR/Cas9 Provides a Rapidly Scorable Phenotype in Highly Polyploid Sugarcane. Front Genome Ed 2021; 3:654996. [PMID: 34713257 PMCID: PMC8525377 DOI: 10.3389/fgeed.2021.654996] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/15/2021] [Indexed: 12/12/2022] Open
Abstract
Genome editing with sequence-specific nucleases, such as clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9), is revolutionizing crop improvement. Developing efficient genome-editing protocols for highly polyploid crops, including sugarcane (x = 10-13), remains challenging due to the high level of genetic redundancy in these plants. Here, we report the efficient multiallelic editing of magnesium chelatase subunit I (MgCh) in sugarcane. Magnesium chelatase is a key enzyme for chlorophyll biosynthesis. CRISPR/Cas9-mediated targeted co-mutagenesis of 49 copies/alleles of magnesium chelatase was confirmed via Sanger sequencing of cloned PCR amplicons. This resulted in severely reduced chlorophyll contents, which was scorable at the time of plant regeneration in the tissue culture. Heat treatment following the delivery of genome editing reagents elevated the editing frequency 2-fold and drastically promoted co-editing of multiple alleles, which proved necessary to create a phenotype that was visibly distinguishable from the wild type. Despite their yellow leaf color, the edited plants were established well in the soil and did not show noticeable growth retardation. This approach will facilitate the establishment of genome editing protocols for recalcitrant crops and support further optimization, including the evaluation of alternative RNA-guided nucleases to overcome the limitations of the protospacer adjacent motif (PAM) site or to develop novel delivery strategies for genome editing reagents.
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Affiliation(s)
- Ayman Eid
- Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, United States
- Department of Energy Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, FL, United States
| | - Chakravarthi Mohan
- Department of Energy Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, FL, United States
| | - Sara Sanchez
- Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, United States
- Department of Energy Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, FL, United States
| | - Duoduo Wang
- Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, United States
- Department of Energy Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, FL, United States
| | - Fredy Altpeter
- Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, United States
- Department of Energy Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, FL, United States
- Genetics Institute, University of Florida, Gainesville, FL, United States
- Plant Molecular and Cellular Biology Program, Institute of Food and Agricultural Sciences, Gainesville, FL, United States
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16
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Nandakumar M, Malathi P, Sundar AR, Viswanathan R. Expression Analyses of Resistance-Associated Candidate Genes During Sugarcane-Colletotrichum falcatum Went Interaction. SUGAR TECH 2021. [DOI: 10.1007/s12355-021-00976-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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17
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Nandakumar M, Malathi P, Sundar AR, Rajadurai CP, Philip M, Viswanathan R. Role of miRNAs in the host-pathogen interaction between sugarcane and Colletotrichum falcatum, the red rot pathogen. PLANT CELL REPORTS 2021; 40:851-870. [PMID: 33818644 DOI: 10.1007/s00299-021-02682-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 03/15/2021] [Indexed: 02/08/2023]
Abstract
KEY MESSAGE Sugarcane microRNAs specifically involved during compatible and incompatible interactions with red rot pathogen Colletotrichum falcatum were identified. We have identified how the miRNAs regulate their gene targets and elaborated evidently on the underlying molecular mechanism of sugarcane defense response to C. falcatum for the first time. Resistance against the fungal pathogen Colletotrichum falcatum causing red rot is one of the most desirable traits for sustainable crop cultivation in sugarcane. To gain new insight into the host defense mechanism against C. falcatum, we studied the role of sugarcane microRNAs during compatible and incompatible interactions by adopting the NGS platform. We have sequenced a total of 80 miRNA families that comprised 980 miRNAs, and the putative targets of the miRNAs include transcription factors, membrane-bound proteins, glutamate receptor proteins, lignin biosynthesis proteins, signaling cascade proteins, transporter proteins, mitochondrial proteins, ER proteins, defense-related, stress response proteins, translational regulation proteins, cell proliferation, and ubiquitination proteins. Further, qRT-PCR analyses of 8 differentially regulated miRNAs and 26 gene transcript targets expression indicated that these miRNAs have a regulatory effect on the expression of respective target genes in most of the cases. Also, the results suggest that certain miRNA regulates many target genes that are involved in inciting early responses to the pathogen infection, signaling pathways, endoplasmic reticulum stress, and resistance gene activation through feedback response from various cellular processes during the compatible and incompatible interaction with the red rot pathogen C. falcatum. The present study revealed the role of sugarcane miRNAs and their target genes during sugarcane-C. falcatum interaction and provided new insight into the miRNA-mediated defense mechanism in sugarcane for the first time.
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Affiliation(s)
- M Nandakumar
- ICAR-Sugarcane Breeding Institute, Coimbatore, Tamil Nadu, 641007, India
| | - P Malathi
- ICAR-Sugarcane Breeding Institute, Coimbatore, Tamil Nadu, 641007, India
| | - A R Sundar
- ICAR-Sugarcane Breeding Institute, Coimbatore, Tamil Nadu, 641007, India
| | - C P Rajadurai
- AgriGenome Labs, Infopark-Smart City Short Rd, Kochi, Kerala, 682030, India
| | - Manuel Philip
- AgriGenome Labs, Infopark-Smart City Short Rd, Kochi, Kerala, 682030, India
| | - R Viswanathan
- ICAR-Sugarcane Breeding Institute, Coimbatore, Tamil Nadu, 641007, India.
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18
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Zhao Y, Karan R, Altpeter F. Error-free recombination in sugarcane mediated by only 30 nucleotides of homology and CRISPR/Cas9 induced DNA breaks or Cre-recombinase. Biotechnol J 2021; 16:e2000650. [PMID: 33710783 DOI: 10.1002/biot.202000650] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 02/15/2021] [Accepted: 03/03/2021] [Indexed: 01/03/2023]
Abstract
Precision genome editing by homology directed repair has tremendous potential for crop improvement. This study describes in planta homologous recombination mediated by CRISPR/Cas9 induced DNA double strand break in proximity to a single short (∼30 nt) homology arm. The efficiency of CRISPR/Cas9-mediated recombination between two loxP sites was compared with Cre (Cyclization recombination enzyme) and codon-optimized Cre-mediated site-specific recombination in sugarcane. A transgenic locus was generated with a selectable nptII coding sequence with terminator between two loxP sites located downstream of a constitutive promoter and acting as transcription block for the downstream promoter-less gusA coding sequence with terminator. Recombination between the two loxP sites resulted in deletion of the transcription block and restored gus activity. This transgenic locus provided an efficient screen for identification of recombination events in sugarcane callus following biolistic delivery of Cre, codon-optimized Cre, or the combination of sgRNA and Cas9 targeting the 5' loxP site. The Cre codon optimized for sugarcane displayed the highest efficiency in mediating the recombination that restored gus activity followed by cre and CRISPR/Cas9. Remarkably the short region of homology of the loxP site cleaved by Cas9 (30 nt)-mediated error-free recombination in all 21 events from three different experiments that were analyzed by Sanger sequencing consistent with homology directed repair. These findings will inform rational design of strategies for precision genome editing in plants.
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Affiliation(s)
- Yang Zhao
- Agronomy Department, Plant Molecular and Cellular Biology Program, Genetics Institute, University of Florida - IFAS, Gainesville, Florida, USA
| | - Ratna Karan
- Agronomy Department, Plant Molecular and Cellular Biology Program, Genetics Institute, University of Florida - IFAS, Gainesville, Florida, USA
| | - Fredy Altpeter
- Agronomy Department, Plant Molecular and Cellular Biology Program, Genetics Institute, University of Florida - IFAS, Gainesville, Florida, USA
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Partida VGS, Dias HM, Corcino DSM, Van Sluys MA. Sucrose-phosphate phosphatase from sugarcane reveals an ancestral tandem duplication. BMC PLANT BIOLOGY 2021; 21:23. [PMID: 33413115 PMCID: PMC7792115 DOI: 10.1186/s12870-020-02795-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 12/14/2020] [Indexed: 05/30/2023]
Abstract
BACKGROUND Sugarcane is capable to store large amounts of sucrose in the culm at maturity hence it became a major source of sucrose for the food and the renewable energy industries. Sucrose, the main disaccharide produced by photosynthesis, is mainly stored in the vacuole of the cells of non-photosynthetic tissues. Two pathways are known to release free sucrose in plant cells, one is de novo synthesis dependent on sucrose phosphate synthase (SPS) and sucrose phosphate phosphatase (S6PP) while the other is regulatory and dependent on sucrose synthase (SuSy) activity. The molecular understanding of genes that give rise to the expression of the enzyme sucrose phosphate phosphatase, responsible for the release of sucrose in the last synthetic step lag behind the regulatory SuSy gene. RESULTS Sugarcane genome sequencing effort disclosed the existence of a tandem duplication and the present work further support that both S6PP.1 and S6PP_2D isoforms are actively transcribed in young sugarcane plants but significantly less at maturity. Two commercial hybrids (SP80-3280 and R570) and both Saccharum spontaneum (IN84-58) and S.officinarum (BADILLA) exhibit transcriptional activity at three-month-old plants of the tandem S6PP_2D in leaves, culm, meristem and root system with a cultivar-specific distribution. Moreover, this tandem duplication is shared with other grasses and is ancestral in the group. CONCLUSION Detection of a new isoform of S6PP resulting from the translation of 14 exon-containing transcript (S6PP_2D) will contribute to the knowledge of sucrose metabolism in plants. In addition, expression varies along plant development and between sugarcane cultivars and parental species.
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20
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Eid A, Mohan C, Sanchez S, Wang D, Altpeter F. Multiallelic, Targeted Mutagenesis of Magnesium Chelatase With CRISPR/Cas9 Provides a Rapidly Scorable Phenotype in Highly Polyploid Sugarcane. Front Genome Ed 2021. [PMID: 34713257 DOI: 10.3389/fgeed.2021.65499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023] Open
Abstract
Genome editing with sequence-specific nucleases, such as clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9), is revolutionizing crop improvement. Developing efficient genome-editing protocols for highly polyploid crops, including sugarcane (x = 10-13), remains challenging due to the high level of genetic redundancy in these plants. Here, we report the efficient multiallelic editing of magnesium chelatase subunit I (MgCh) in sugarcane. Magnesium chelatase is a key enzyme for chlorophyll biosynthesis. CRISPR/Cas9-mediated targeted co-mutagenesis of 49 copies/alleles of magnesium chelatase was confirmed via Sanger sequencing of cloned PCR amplicons. This resulted in severely reduced chlorophyll contents, which was scorable at the time of plant regeneration in the tissue culture. Heat treatment following the delivery of genome editing reagents elevated the editing frequency 2-fold and drastically promoted co-editing of multiple alleles, which proved necessary to create a phenotype that was visibly distinguishable from the wild type. Despite their yellow leaf color, the edited plants were established well in the soil and did not show noticeable growth retardation. This approach will facilitate the establishment of genome editing protocols for recalcitrant crops and support further optimization, including the evaluation of alternative RNA-guided nucleases to overcome the limitations of the protospacer adjacent motif (PAM) site or to develop novel delivery strategies for genome editing reagents.
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Affiliation(s)
- Ayman Eid
- Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, United States
- Department of Energy Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, FL, United States
| | - Chakravarthi Mohan
- Department of Energy Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, FL, United States
| | - Sara Sanchez
- Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, United States
- Department of Energy Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, FL, United States
| | - Duoduo Wang
- Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, United States
- Department of Energy Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, FL, United States
| | - Fredy Altpeter
- Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, United States
- Department of Energy Center for Advanced Bioenergy and Bioproducts Innovation, Gainesville, FL, United States
- Genetics Institute, University of Florida, Gainesville, FL, United States
- Plant Molecular and Cellular Biology Program, Institute of Food and Agricultural Sciences, Gainesville, FL, United States
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21
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Calderan-Rodrigues MJ, de Barros Dantas LL, Cheavegatti Gianotto A, Caldana C. Applying Molecular Phenotyping Tools to Explore Sugarcane Carbon Potential. FRONTIERS IN PLANT SCIENCE 2021; 12:637166. [PMID: 33679852 PMCID: PMC7935522 DOI: 10.3389/fpls.2021.637166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 01/27/2021] [Indexed: 05/21/2023]
Abstract
Sugarcane (Saccharum spp.), a C4 grass, has a peculiar feature: it accumulates, gradient-wise, large amounts of carbon (C) as sucrose in its culms through a complex pathway. Apart from being a sustainable crop concerning C efficiency and bioenergetic yield per hectare, sugarcane is used as feedstock for producing ethanol, sugar, high-value compounds, and products (e.g., polymers and succinate), and bioelectricity, earning the title of the world's leading biomass crop. Commercial cultivars, hybrids bearing high levels of polyploidy, and aneuploidy, are selected from a large number of crosses among suitable parental genotypes followed by the cloning of superior individuals among the progeny. Traditionally, these classical breeding strategies have been favoring the selection of cultivars with high sucrose content and resistance to environmental stresses. A current paradigm change in sugarcane breeding programs aims to alter the balance of C partitioning as a means to provide more plasticity in the sustainable use of this biomass for metabolic engineering and green chemistry. The recently available sugarcane genetic assemblies powered by data science provide exciting perspectives to increase biomass, as the current sugarcane yield is roughly 20% of its predicted potential. Nowadays, several molecular phenotyping tools can be applied to meet the predicted sugarcane C potential, mainly targeting two competing pathways: sucrose production/storage and biomass accumulation. Here we discuss how molecular phenotyping can be a powerful tool to assist breeding programs and which strategies could be adopted depending on the desired final products. We also tackle the advances in genetic markers and mapping as well as how functional genomics and genetic transformation might be able to improve yield and saccharification rates. Finally, we review how "omics" advances are promising to speed up plant breeding and reach the unexplored potential of sugarcane in terms of sucrose and biomass production.
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Affiliation(s)
| | | | | | - Camila Caldana
- Max Planck Institute of Molecular Plant Physiology, Potsdam, Germany
- *Correspondence: Camila Caldana,
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22
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da Silva MF, Gonçalves MC, Brito MDS, Medeiros CN, Harakava R, Landell MGDA, Pinto LR. Sugarcane mosaic virus mediated changes in cytosine methylation pattern and differentially transcribed fragments in resistance-contrasting sugarcane genotypes. PLoS One 2020; 15:e0241493. [PMID: 33166323 PMCID: PMC7652275 DOI: 10.1371/journal.pone.0241493] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 10/16/2020] [Indexed: 12/24/2022] Open
Abstract
Sugarcane mosaic virus (SCMV) is the causal agent of sugarcane mosaic disease (SMD) in Brazil; it is mainly controlled by using resistant cultivars. Studies on the changes in sugarcane transcriptome provided the first insights about the molecular basis underlying the genetic resistance to SMD; nonetheless, epigenetic modifications such as cytosine methylation is also informative, considering its roles in gene expression regulation. In our previous study, differentially transcribed fragments (DTFs) were obtained using cDNA-amplified fragment length polymorphism by comparing mock- and SCMV-inoculated plants from two sugarcane cultivars with contrasting responses to SMD. In this study, the identification of unexplored DTFs was continued while the same leaf samples were used to evaluate SCMV-mediated changes in the cytosine methylation pattern by using methylation-sensitive amplification polymorphism. This analysis revealed minor changes in cytosine methylation in response to SCMV infection, but distinct changes between the cultivars with contrasting responses to SMD, with higher hypomethylation events 24 and 72 h post-inoculation in the resistant cultivar. The differentially methylated fragments (DMFs) aligned with transcripts, putative promoters, and genomic regions, with a preponderant distribution within CpG islands. The transcripts found were associated with plant immunity and other stress responses, epigenetic changes, and transposable elements. The DTFs aligned with transcripts assigned to stress responses, epigenetic changes, photosynthesis, lipid transport, and oxidoreductases, in which the transcriptional start site is located in proximity with CpG islands and tandem repeats. Real-time quantitative polymerase chain reaction results revealed significant upregulation in the resistant cultivar of aspartyl protease and VQ protein, respectively, selected from DMF and DTF alignments, suggesting their roles in genetic resistance to SMD and supporting the influence of cytosine methylation in gene expression. Thus, we identified new candidate genes for further validation and showed that the changes in cytosine methylation may regulate important mechanisms underlying the genetic resistance to SMD.
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Affiliation(s)
- Marcel Fernando da Silva
- Biologia Aplicada à Agropecuária, Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista “Júlio de Mesquita Filho”, Jaboticabal, São Paulo, Brazil
| | | | - Michael dos Santos Brito
- Departamento de Ciência e Tecnologia, Instituto de Ciência e Tecnologia da Universidade Federal de São Paulo, São José dos Campos, São Paulo, Brazil
| | | | - Ricardo Harakava
- Crop Protection Research Centre, Instituto Biológico, São Paulo, Brazil
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Figueiredo R, Portilla Llerena JP, Kiyota E, Ferreira SS, Cardeli BR, de Souza SCR, Dos Santos Brito M, Sodek L, Cesarino I, Mazzafera P. The sugarcane ShMYB78 transcription factor activates suberin biosynthesis in Nicotiana benthamiana. PLANT MOLECULAR BIOLOGY 2020; 104:411-427. [PMID: 32813231 DOI: 10.1007/s11103-020-01048-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 08/06/2020] [Indexed: 05/11/2023]
Abstract
KEY MESSAGE A sugarcane MYB present in the culm induces suberin biosynthesis and is involved both with fatty acid and phenolics metabolism. Few transcription factors have been described as regulators of cell wall polymers deposition in C4 grasses. Particularly, regulation of suberin biosynthesis in this group of plants remains poorly understood. Here, we showed that the sugarcane MYB transcription factor ShMYB78 is an activator of suberin biosynthesis and deposition. ShMYB78 was identified upon screening genes whose expression was upregulated in sugarcane internodes undergoing suberization during culm development or triggered by wounding. Agrobacterium-mediated transient expression of ShMYB78 in Nicotiana benthamiana leaves induced the ectopic deposition of suberin and its aliphatic and aromatic monomers. Further, the expression of suberin-related genes was induced by ShMYB78 heterologous expression in Nicotiana benthamiana leaves. ShMYB78 was shown to be a nuclear protein based on its presence in sugarcane internode nuclear protein extracts, and protoplast transactivation assays demonstrated that ShMYB78 activates the promoters of the sugarcane suberin biosynthetic genes β-ketoacyl-CoA synthase (ShKCS20) and caffeic acid-O-methyltransferase (ShCOMT). Our results suggest that ShMYB78 may be involved in the transcriptional regulation of suberin deposition, from fatty acid metabolism to phenylpropanoid biosynthesis, in sugarcane internodes.
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Affiliation(s)
- Raquel Figueiredo
- Department of Plant Biology, Institute of Biology, State University of Campinas, Campinas, 13083-862, Brazil.
- Department of Biology, Faculdade de Ciências, Universidade Do Porto, Rua Do Campo Alegre S/N, 4169-007, Porto, Portugal.
| | - Juan Pablo Portilla Llerena
- Department of Plant Biology, Institute of Biology, State University of Campinas, Campinas, 13083-862, Brazil
| | - Eduardo Kiyota
- Department of Plant Biology, Institute of Biology, State University of Campinas, Campinas, 13083-862, Brazil
| | - Sávio Siqueira Ferreira
- Department of Botany, Institute of Biosciences, University of São Paulo, São Paulo, 05508-090, Brazil
| | - Bárbara Rocha Cardeli
- Department of Plant Biology, Institute of Biology, State University of Campinas, Campinas, 13083-862, Brazil
| | - Sarah Caroline Ribeiro de Souza
- Department of Plant Biology, Institute of Biology, State University of Campinas, Campinas, 13083-862, Brazil
- Department of Botany, Federal University of São Carlos, PO Box 676, São Carlos, São Paulo, 13565-905, Brazil
| | - Michael Dos Santos Brito
- Institute of Science and Technology, Federal University of São Paulo, Campus São José dos Campos, São José dos Campos, 12231-280, Brazil
| | - Ladaslav Sodek
- Department of Plant Biology, Institute of Biology, State University of Campinas, Campinas, 13083-862, Brazil
| | - Igor Cesarino
- Department of Botany, Institute of Biosciences, University of São Paulo, São Paulo, 05508-090, Brazil
| | - Paulo Mazzafera
- Department of Plant Biology, Institute of Biology, State University of Campinas, Campinas, 13083-862, Brazil
- Department of Crop Science, College of Agriculture Luiz de Queiroz, University of São Paulo, Piracicaba, 13418-900, Brazil
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Correr FH, Hosaka GK, Barreto FZ, Valadão IB, Balsalobre TWA, Furtado A, Henry RJ, Carneiro MS, Margarido GRA. Differential expression in leaves of Saccharum genotypes contrasting in biomass production provides evidence of genes involved in carbon partitioning. BMC Genomics 2020; 21:673. [PMID: 32993494 PMCID: PMC7526157 DOI: 10.1186/s12864-020-07091-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 09/22/2020] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND The development of biomass crops aims to meet industrial yield demands, in order to optimize profitability and sustainability. Achieving these goals in an energy crop like sugarcane relies on breeding for sucrose accumulation, fiber content and stalk number. To expand the understanding of the biological pathways related to these traits, we evaluated gene expression of two groups of genotypes contrasting in biomass composition. RESULTS First visible dewlap leaves were collected from 12 genotypes, six per group, to perform RNA-Seq. We found a high number of differentially expressed genes, showing how hybridization in a complex polyploid system caused extensive modifications in genome functioning. We found evidence that differences in transposition and defense related genes may arise due to the complex nature of the polyploid Saccharum genomes. Genotypes within both biomass groups showed substantial variability in genes involved in photosynthesis. However, most genes coding for photosystem components or those coding for phosphoenolpyruvate carboxylases (PEPCs) were upregulated in the high biomass group. Sucrose synthase (SuSy) coding genes were upregulated in the low biomass group, showing that this enzyme class can be involved with sucrose synthesis in leaves, similarly to sucrose phosphate synthase (SPS) and sucrose phosphate phosphatase (SPP). Genes in pathways related to biosynthesis of cell wall components and expansins coding genes showed low average expression levels and were mostly upregulated in the high biomass group. CONCLUSIONS Together, these results show differences in carbohydrate synthesis and carbon partitioning in the source tissue of distinct phenotypic groups. Our data from sugarcane leaves revealed how hybridization in a complex polyploid system resulted in noticeably different transcriptomic profiles between contrasting genotypes.
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Affiliation(s)
- Fernando Henrique Correr
- Department of Genetics, University of São Paulo, "Luiz de Queiroz" College of Agriculture, Av Pádua Dias, 11, Piracicaba, 13400-970, Brazil
| | - Guilherme Kenichi Hosaka
- Department of Genetics, University of São Paulo, "Luiz de Queiroz" College of Agriculture, Av Pádua Dias, 11, Piracicaba, 13400-970, Brazil
| | - Fernanda Zatti Barreto
- Department of Biotechnology, Vegetal and Animal Production, Federal University of São Carlos, Center of Agricultural Sciences, Rodovia Anhanguera, km 174, Araras, 13600-970, Brazil
| | - Isabella Barros Valadão
- Department of Biotechnology, Vegetal and Animal Production, Federal University of São Carlos, Center of Agricultural Sciences, Rodovia Anhanguera, km 174, Araras, 13600-970, Brazil
| | - Thiago Willian Almeida Balsalobre
- Department of Biotechnology, Vegetal and Animal Production, Federal University of São Carlos, Center of Agricultural Sciences, Rodovia Anhanguera, km 174, Araras, 13600-970, Brazil
| | - Agnelo Furtado
- Queensland Alliance for Agriculture and Food Innovation, University of Queensland, Brisbane, 4072, Australia
| | - Robert James Henry
- Queensland Alliance for Agriculture and Food Innovation, University of Queensland, Brisbane, 4072, Australia
| | - Monalisa Sampaio Carneiro
- Department of Biotechnology, Vegetal and Animal Production, Federal University of São Carlos, Center of Agricultural Sciences, Rodovia Anhanguera, km 174, Araras, 13600-970, Brazil
| | - Gabriel Rodrigues Alves Margarido
- Department of Genetics, University of São Paulo, "Luiz de Queiroz" College of Agriculture, Av Pádua Dias, 11, Piracicaba, 13400-970, Brazil.
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Petit J, Salentijn EMJ, Paulo MJ, Denneboom C, van Loo EN, Trindade LM. Elucidating the Genetic Architecture of Fiber Quality in Hemp ( Cannabis sativa L.) Using a Genome-Wide Association Study. Front Genet 2020; 11:566314. [PMID: 33093845 PMCID: PMC7527631 DOI: 10.3389/fgene.2020.566314] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 08/25/2020] [Indexed: 01/12/2023] Open
Abstract
Hemp (Cannabis sativa L.) is a bast-fiber crop with a great potential in the emerging bio-based economy. Yet, hemp breeding for fiber quality is restricted and that is mainly due to the limited knowledge of the genetic architecture of its fiber quality. A panel of 123 hemp accessions, with large phenotypic variability, was used to study the genetic basis of seven cell wall and bast fiber traits relevant to fiber quality. These traits showed large genetic variance components and high values of broad sense heritability in this hemp panel, as concluded from the phenotypic evaluation across three test locations with contrasting environments. The hemp panel was genotyped using restriction site associated DNA sequencing (RAD-seq). Subsequently, a large set (> 600,000) of selected genome-wide single nucleotide polymorphism (SNP) markers was used for a genome-wide association study (GWAS) approach to get insights into quantitative trait loci (QTLs) controlling fiber quality traits. In absence of a complete hemp genome sequence, identification of QTLs was based on the following characteristics: (i) association level to traits, (ii) fraction of explained trait variance, (iii) collinearity between QTLs, and (iv) detection across different environments. Using this approach, 16 QTLs were identified across locations for different fiber quality traits, including contents of glucose, glucuronic acid, mannose, xylose, lignin, and bast fiber content. Among them, six were found across the three environments. The genetic markers composing the QTLs that are common across locations are valuable tools to develop novel genotypes of hemp with improved fiber quality. Underneath the QTLs, 12 candidate genes were identified which are likely to be involved in the biosynthesis and modification of monosaccharides, polysaccharides, and lignin. These candidate genes were suggested to play an important role in determining fiber quality in hemp. This study provides new insights into the genetic architecture of fiber traits, identifies QTLs and candidate genes that form the basis for molecular breeding for high fiber quality hemp cultivars.
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Affiliation(s)
- Jordi Petit
- Wageningen UR Plant Breeding, Wageningen University & Research, Wageningen, Netherlands
| | - Elma M J Salentijn
- Wageningen UR Plant Breeding, Wageningen University & Research, Wageningen, Netherlands
| | - Maria-João Paulo
- Biometris, Wageningen University & Research, Wageningen, Netherlands
| | - Christel Denneboom
- Wageningen UR Plant Breeding, Wageningen University & Research, Wageningen, Netherlands
| | - Eibertus N van Loo
- Wageningen UR Plant Breeding, Wageningen University & Research, Wageningen, Netherlands
| | - Luisa M Trindade
- Wageningen UR Plant Breeding, Wageningen University & Research, Wageningen, Netherlands
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Correr FH, Hosaka GK, Gómez SGP, Cia MC, Vitorello CBM, Camargo LEA, Massola NS, Carneiro MS, Margarido GRA. Time-series expression profiling of sugarcane leaves infected with Puccinia kuehnii reveals an ineffective defense system leading to susceptibility. PLANT CELL REPORTS 2020; 39:873-889. [PMID: 32314046 DOI: 10.1007/s00299-020-02536-w] [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: 12/20/2019] [Accepted: 03/30/2020] [Indexed: 05/02/2023]
Abstract
Successful orange rust development on sugarcane can potentially be explained as suppression of the plant immune system by the pathogen or delayed plant signaling to trigger defense responses. Puccinia kuehnii is an obligate biotrophic fungus that infects sugarcane leaves causing a disease called orange rust. It spread out to other countries resulting in reduction of crop yield since its first outbreak. One of the knowledge gaps of that pathosystem is to understand the molecular mechanisms altered in susceptible plants by this biotic stress. Here, we investigated the changes in temporal expression of transcripts in pathways associated with the immune system. To achieve this purpose, we used RNA-Seq to analyze infected leaf samples collected at five time points after inoculation. Differential expression analyses of adjacent time points revealed substantial changes at 12, 48 h after inoculation and 12 days after inoculation, coinciding with the events of spore germination, haustoria post-penetration and post-sporulation, respectively. During the first 24 h, a lack of transcripts involved with resistance mechanisms was revealed by underrepresentation of hypersensitive and defense response related genes. However, two days after inoculation, upregulation of genes involved with immune response regulation provided evidence of some potential defense response. Events related to biotic stress responses were predominantly downregulated in the initial time points, but expression was later restored to basal levels. Genes involved in carbohydrate metabolism showed evidence of repression followed by upregulation, possibly to ensure the pathogen nutritional requirements were met. Our results support the hypothesis that P. kuehnii initially suppressed sugarcane genes involved in plant defense systems. Late overexpression of specific regulatory pathways also suggests the possibility of an inefficient recognition system by a susceptible sugarcane genotype.
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Affiliation(s)
- Fernando Henrique Correr
- Departamento de Genética, Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Piracicaba, São Paulo, Brazil
| | - Guilherme Kenichi Hosaka
- Departamento de Genética, Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Piracicaba, São Paulo, Brazil
| | - Sergio Gregorio Pérez Gómez
- Departamento de Fitopatologia, Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Piracicaba, São Paulo, Brazil
| | - Mariana Cicarelli Cia
- Departamento de Fitopatologia, Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Piracicaba, São Paulo, Brazil
| | - Claudia Barros Monteiro Vitorello
- Departamento de Genética, Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Piracicaba, São Paulo, Brazil
| | - Luis Eduardo Aranha Camargo
- Departamento de Fitopatologia, Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Piracicaba, São Paulo, Brazil
| | - Nelson Sidnei Massola
- Departamento de Fitopatologia, Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Piracicaba, São Paulo, Brazil
| | - Monalisa Sampaio Carneiro
- Departamento de Biotecnologia e Produção Vegetal e Animal, Universidade Federal de São Carlos, Centro de Ciências Agrárias, Araras, São Paulo, Brazil
| | - Gabriel Rodrigues Alves Margarido
- Departamento de Genética, Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Piracicaba, São Paulo, Brazil.
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Manimekalai R, Suresh G, Govinda Kurup H, Athiappan S, Kandalam M. Role of NGS and SNP genotyping methods in sugarcane improvement programs. Crit Rev Biotechnol 2020; 40:865-880. [PMID: 32508157 DOI: 10.1080/07388551.2020.1765730] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Sugarcane (Saccharum spp.) is one of the most economically significant crops because of its high sucrose content and it is a promising biomass feedstock for biofuel production. Sugarcane genome sequencing and analysis is a difficult task due to its heterozygosity and polyploidy. Long sequence read technologies, PacBio Single-Molecule Real-Time (SMRT) sequencing, the Illumina TruSeq, and the Oxford Nanopore sequencing could solve the problem of genome assembly. On the applications side, next generation sequencing (NGS) technologies played a major role in the discovery of single nucleotide polymorphism (SNP) and the development of low to high throughput genotyping platforms. The two mainstream high throughput genotyping platforms are the SNP microarray and genotyping by sequencing (GBS). This paper reviews the NGS in sugarcane genomics, genotyping methodologies, and the choice of these methods. Array-based SNP genotyping is robust, provides consistent SNPs, and relatively easier downstream data analysis. The GBS method identifies large scale SNPs across the germplasm. A combination of targeted GBS and array-based genotyping methods should be used to increase the accuracy of genomic selection and marker-assisted breeding.
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Affiliation(s)
- Ramaswamy Manimekalai
- Crop Improvement Division, ICAR - Sugarcane Breeding Institute, Indian Council of Agricultural Research (ICAR), Coimbatore, Tamil Nadu, India
| | - Gayathri Suresh
- Crop Improvement Division, ICAR - Sugarcane Breeding Institute, Indian Council of Agricultural Research (ICAR), Coimbatore, Tamil Nadu, India
| | - Hemaprabha Govinda Kurup
- Crop Improvement Division, ICAR - Sugarcane Breeding Institute, Indian Council of Agricultural Research (ICAR), Coimbatore, Tamil Nadu, India
| | - Selvi Athiappan
- Crop Improvement Division, ICAR - Sugarcane Breeding Institute, Indian Council of Agricultural Research (ICAR), Coimbatore, Tamil Nadu, India
| | - Mallikarjuna Kandalam
- Business Development, Asia Pacific Japan region, Thermo Fisher Scientific, Waltham, MA, USA
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28
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Dantas LLB, Calixto CPG, Dourado MM, Carneiro MS, Brown JWS, Hotta CT. Alternative Splicing of Circadian Clock Genes Correlates With Temperature in Field-Grown Sugarcane. FRONTIERS IN PLANT SCIENCE 2019; 10:1614. [PMID: 31921258 PMCID: PMC6936171 DOI: 10.3389/fpls.2019.01614] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 11/15/2019] [Indexed: 05/05/2023]
Abstract
Alternative Splicing (AS) is a mechanism that generates different mature transcripts from precursor mRNAs (pre-mRNAs) of the same gene. In plants, a wide range of physiological and metabolic events are related to AS, as well as fast responses to changes in temperature. AS is present in around 60% of intron-containing genes in Arabidopsis, 46% in rice, and 38% in maize and it is widespread among the circadian clock genes. Little is known about how AS influences the circadian clock of C4 plants, like commercial sugarcane, a C4 crop with a complex hybrid genome. This work aims to test if the daily dynamics of AS forms of circadian clock genes are regulated by environmental factors, such as temperature, in the field. A systematic search for AS in five sugarcane clock genes, ScLHY, ScPRR37, ScPRR73, ScPRR95, and ScTOC1 using different organs of sugarcane sampled during winter, with 4 months old plants, and during summer, with 9 months old plants, revealed temperature- and organ-dependent expression of at least one alternatively spliced isoform in all genes. Expression of AS isoforms varied according to the season. Our results suggest that AS events in circadian clock genes are correlated with temperature.
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Affiliation(s)
- Luíza L. B. Dantas
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Cristiane P. G. Calixto
- Division of Plant Sciences, School of Life Sciences, University of Dundee at the James Hutton Institute, Dundee, United Kingdom
| | - Maira M. Dourado
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Monalisa S. Carneiro
- Departmento de Biotecnologia, Produção Vegetal e Animal, Centro de Ciências Agrícolas, Universidade Federal de São Carlos, Araras, Brazil
| | - John W. S. Brown
- Division of Plant Sciences, School of Life Sciences, University of Dundee at the James Hutton Institute, Dundee, United Kingdom
- Cell and Molecular Sciences, The James Hutton Institute, Dundee, United Kingdom
| | - Carlos T. Hotta
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
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Souza GM, Van Sluys MA, Lembke CG, Lee H, Margarido GRA, Hotta CT, Gaiarsa JW, Diniz AL, Oliveira MDM, Ferreira SDS, Nishiyama MY, ten-Caten F, Ragagnin GT, Andrade PDM, de Souza RF, Nicastro GG, Pandya R, Kim C, Guo H, Durham AM, Carneiro MS, Zhang J, Zhang X, Zhang Q, Ming R, Schatz MC, Davidson B, Paterson AH, Heckerman D. Assembly of the 373k gene space of the polyploid sugarcane genome reveals reservoirs of functional diversity in the world's leading biomass crop. Gigascience 2019; 8:giz129. [PMID: 31782791 PMCID: PMC6884061 DOI: 10.1093/gigascience/giz129] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 05/23/2019] [Accepted: 10/08/2019] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Sugarcane cultivars are polyploid interspecific hybrids of giant genomes, typically with 10-13 sets of chromosomes from 2 Saccharum species. The ploidy, hybridity, and size of the genome, estimated to have >10 Gb, pose a challenge for sequencing. RESULTS Here we present a gene space assembly of SP80-3280, including 373,869 putative genes and their potential regulatory regions. The alignment of single-copy genes in diploid grasses to the putative genes indicates that we could resolve 2-6 (up to 15) putative homo(eo)logs that are 99.1% identical within their coding sequences. Dissimilarities increase in their regulatory regions, and gene promoter analysis shows differences in regulatory elements within gene families that are expressed in a species-specific manner. We exemplify these differences for sucrose synthase (SuSy) and phenylalanine ammonia-lyase (PAL), 2 gene families central to carbon partitioning. SP80-3280 has particular regulatory elements involved in sucrose synthesis not found in the ancestor Saccharum spontaneum. PAL regulatory elements are found in co-expressed genes related to fiber synthesis within gene networks defined during plant growth and maturation. Comparison with sorghum reveals predominantly bi-allelic variations in sugarcane, consistent with the formation of 2 "subgenomes" after their divergence ∼3.8-4.6 million years ago and reveals single-nucleotide variants that may underlie their differences. CONCLUSIONS This assembly represents a large step towards a whole-genome assembly of a commercial sugarcane cultivar. It includes a rich diversity of genes and homo(eo)logous resolution for a representative fraction of the gene space, relevant to improve biomass and food production.
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Affiliation(s)
- Glaucia Mendes Souza
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo, SP 05508-000, Brazil
| | - Marie-Anne Van Sluys
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, SP 05508-090, Brazil
| | - Carolina Gimiliani Lembke
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo, SP 05508-000, Brazil
| | - Hayan Lee
- Cold Spring Harbor Laboratory, One Bungtown Road, Koch Building #1119, Cold Spring Harbor, NY11724, United States of America
- Department of Energy Joint Genome Institute, 2800 Mitchell Drive, Walnut Creek, CACA94598, United States of America
| | - Gabriel Rodrigues Alves Margarido
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Avenida Pádua Dias, 11, Piracicaba, SP 13418-900, Brazil
| | - Carlos Takeshi Hotta
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo, SP 05508-000, Brazil
| | - Jonas Weissmann Gaiarsa
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, SP 05508-090, Brazil
| | - Augusto Lima Diniz
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo, SP 05508-000, Brazil
| | - Mauro de Medeiros Oliveira
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo, SP 05508-000, Brazil
| | - Sávio de Siqueira Ferreira
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo, SP 05508-000, Brazil
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, SP 05508-090, Brazil
| | - Milton Yutaka Nishiyama
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo, SP 05508-000, Brazil
- Laboratório Especial de Toxinologia Aplicada, Instituto Butantan, Av. Vital Brasil, 1500, São Paulo, SP05503-900, Brazil
| | - Felipe ten-Caten
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo, SP 05508-000, Brazil
| | - Geovani Tolfo Ragagnin
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, SP 05508-090, Brazil
| | - Pablo de Morais Andrade
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo, SP 05508-000, Brazil
| | - Robson Francisco de Souza
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, Av.Professor Lineu Prestes, 1734, São Paulo, SP 05508-900, Brazil
| | - Gianlucca Gonçalves Nicastro
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, Av.Professor Lineu Prestes, 1734, São Paulo, SP 05508-900, Brazil
| | - Ravi Pandya
- Microsoft Research, One Microsoft Way, Redmond, WA 98052, United States of America
| | - Changsoo Kim
- Plant Genome Mapping Laboratory, University of Georgia, 120 Green Street, Athens, GA 30602-7223,United States of America
- Department of Crop Science, Chungnam National University, 99 Daehak Ro Yuseong Gu, Deajeon,34134, South Korea
| | - Hui Guo
- Plant Genome Mapping Laboratory, University of Georgia, 120 Green Street, Athens, GA 30602-7223,United States of America
| | - Alan Mitchell Durham
- Departamento de Ciências da Computação, Instituto de Matemática e Estatística, Universidade de São Paulo, Rua do Matão, 1010, São Paulo, SP 05508-090, Brazil
| | - Monalisa Sampaio Carneiro
- Departamento de Biotecnologia e Produção Vegetal e Animal, Centro de Ciências Agrárias, Universidade Federal de São Carlos, Rodovia Washington Luis km 235, Araras, SP 13.565-905, Brazil
| | - Jisen Zhang
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Shangxiadian Road, Fuzhou 350002, Fujian, China
| | - Xingtan Zhang
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Shangxiadian Road, Fuzhou 350002, Fujian, China
| | - Qing Zhang
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Shangxiadian Road, Fuzhou 350002, Fujian, China
| | - Ray Ming
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Shangxiadian Road, Fuzhou 350002, Fujian, China
- Department of Plant Biology, University of Illinois at Urbana-Champaign, 201 W. Gregory Dr. Urbana, Urbana, Illinois 61801, United States of America
| | - Michael C Schatz
- Cold Spring Harbor Laboratory, One Bungtown Road, Koch Building #1119, Cold Spring Harbor, NY11724, United States of America
- Departments of Computer Science and Biology, Johns Hopkins University, 3400 North Charles Street,Baltimore, MD 21218-2608, United States of America
| | - Bob Davidson
- Microsoft Research, One Microsoft Way, Redmond, WA 98052, United States of America
| | - Andrew H Paterson
- Plant Genome Mapping Laboratory, University of Georgia, 120 Green Street, Athens, GA 30602-7223,United States of America
| | - David Heckerman
- Microsoft Research, One Microsoft Way, Redmond, WA 98052, United States of America
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30
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Diniz AL, Ferreira SS, Ten-Caten F, Margarido GRA, Dos Santos JM, Barbosa GVDS, Carneiro MS, Souza GM. Genomic resources for energy cane breeding in the post genomics era. Comput Struct Biotechnol J 2019; 17:1404-1414. [PMID: 31871586 PMCID: PMC6906722 DOI: 10.1016/j.csbj.2019.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/25/2019] [Accepted: 10/28/2019] [Indexed: 01/09/2023] Open
Abstract
Sugarcane is one of the most sustainable energy crops among cultivated crops presenting the highest tonnage of cultivated plants. Its high productivity of sugar, bioethanol and bioelectricity make it a promising green alternative to petroleum. Furthermore, the myriad of products that can be derived from sugarcane biomass has been driving breeding programs towards varieties with a higher yield of fiber and a more vigorous and sustainable performance: the energy cane. Here we provide an overview of the energy cane including plant description, breeding efforts, types, and end-uses. In addition, we describe recently published genomic resources for the development of this crop, discuss current knowledge of cell wall metabolism, bioinformatic tools and databases available for the community.
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Affiliation(s)
- Augusto L Diniz
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo 05508-000, SP, Brazil
| | - Sávio S Ferreira
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo 05508-090, SP, Brazil
| | - Felipe Ten-Caten
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo 05508-000, SP, Brazil
| | - Gabriel R A Margarido
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Avenida Pádua Dias, 11, Piracicaba 13418-900, SP, Brazil
| | - João M Dos Santos
- Departamento de Fitotecnia e Fitossanidade, Centro de Ciências Agrárias, Universidade Federal de Alagoas, BR 104 Norte, km 85, Rio Largo 571000-000, AL, Brazil
| | - Geraldo V de S Barbosa
- Departamento de Fitotecnia e Fitossanidade, Centro de Ciências Agrárias, Universidade Federal de Alagoas, BR 104 Norte, km 85, Rio Largo 571000-000, AL, Brazil
| | - Monalisa S Carneiro
- Departamento de Biotecnologia e Produção Vegetal e Animal, Centro de Ciências Agrárias, Universidade Federal de São Carlos, Rodovia Anhanguera km 174, Araras 13600-970, SP, Brazil
| | - Glaucia M Souza
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo 05508-000, SP, Brazil
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31
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da Costa ZP, Cauz-Santos LA, Ragagnin GT, Van Sluys MA, Dornelas MC, Berges H, de Mello Varani A, Vieira MLC. Transposable element discovery and characterization of LTR-retrotransposon evolutionary lineages in the tropical fruit species Passiflora edulis. Mol Biol Rep 2019; 46:6117-6133. [DOI: 10.1007/s11033-019-05047-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 08/28/2019] [Indexed: 12/23/2022]
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Ali A, Khan M, Sharif R, Mujtaba M, Gao SJ. Sugarcane Omics: An Update on the Current Status of Research and Crop Improvement. PLANTS (BASEL, SWITZERLAND) 2019; 8:E344. [PMID: 31547331 PMCID: PMC6784093 DOI: 10.3390/plants8090344] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/08/2019] [Accepted: 08/20/2019] [Indexed: 12/20/2022]
Abstract
Sugarcane is an important crop from Poaceae family, contributing about 80% of the total world's sucrose with an annual value of around US$150 billion. In addition, sugarcane is utilized as a raw material for the production of bioethanol, which is an alternate source of renewable energy. Moving towards sugarcane omics, a remarkable success has been achieved in gene transfer from a wide variety of plant and non-plant sources to sugarcane, with the accessibility of efficient transformation systems, selectable marker genes, and genetic engineering gears. Genetic engineering techniques make possible to clone and characterize useful genes and also to improve commercially important traits in elite sugarcane clones that subsequently lead to the development of an ideal cultivar. Sugarcane is a complex polyploidy crop, and hence no single technique has been found to be the best for the confirmation of polygenic and phenotypic characteristics. To better understand the application of basic omics in sugarcane regarding agronomic characters and industrial quality traits as well as responses to diverse biotic and abiotic stresses, it is important to explore the physiology, genome structure, functional integrity, and collinearity of sugarcane with other more or less similar crops/plants. Genetic improvements in this crop are hampered by its complex genome, low fertility ratio, longer production cycle, and susceptibility to several biotic and abiotic stresses. Biotechnology interventions are expected to pave the way for addressing these obstacles and improving sugarcane crop. Thus, this review article highlights up to date information with respect to how advanced data of omics (genomics, transcriptomic, proteomics and metabolomics) can be employed to improve sugarcane crops.
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Affiliation(s)
- Ahmad Ali
- National Engineering Research Center for Sugarcane, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Mehran Khan
- Department of Plant Protection, Faculty of Agricultural Sciences, Ghazi University, Dera Ghazi Khan, Punjab 32200, Pakistan
| | - Rahat Sharif
- College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Muhammad Mujtaba
- Institute of Biotechnology, Ankara University, Ankara 06110, Turkey
| | - San-Ji Gao
- National Engineering Research Center for Sugarcane, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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33
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Orozco-Arias S, Isaza G, Guyot R. Retrotransposons in Plant Genomes: Structure, Identification, and Classification through Bioinformatics and Machine Learning. Int J Mol Sci 2019; 20:E3837. [PMID: 31390781 PMCID: PMC6696364 DOI: 10.3390/ijms20153837] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 07/31/2019] [Accepted: 08/02/2019] [Indexed: 01/26/2023] Open
Abstract
Transposable elements (TEs) are genomic units able to move within the genome of virtually all organisms. Due to their natural repetitive numbers and their high structural diversity, the identification and classification of TEs remain a challenge in sequenced genomes. Although TEs were initially regarded as "junk DNA", it has been demonstrated that they play key roles in chromosome structures, gene expression, and regulation, as well as adaptation and evolution. A highly reliable annotation of these elements is, therefore, crucial to better understand genome functions and their evolution. To date, much bioinformatics software has been developed to address TE detection and classification processes, but many problematic aspects remain, such as the reliability, precision, and speed of the analyses. Machine learning and deep learning are algorithms that can make automatic predictions and decisions in a wide variety of scientific applications. They have been tested in bioinformatics and, more specifically for TEs, classification with encouraging results. In this review, we will discuss important aspects of TEs, such as their structure, importance in the evolution and architecture of the host, and their current classifications and nomenclatures. We will also address current methods and their limitations in identifying and classifying TEs.
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Affiliation(s)
- Simon Orozco-Arias
- Department of Computer Science, Universidad Autónoma de Manizales, Manizales 170001, Colombia
- Department of Systems and Informatics, Universidad de Caldas, Manizales 170001, Colombia
| | - Gustavo Isaza
- Department of Systems and Informatics, Universidad de Caldas, Manizales 170001, Colombia
| | - Romain Guyot
- Department of Electronics and Automatization, Universidad Autónoma de Manizales, Manizales 170001, Colombia.
- Institut de Recherche pour le Développement, CIRAD, University Montpellier, 34000 Montpellier, France.
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34
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A genome-wide association study identified loci for yield component traits in sugarcane (Saccharum spp.). PLoS One 2019; 14:e0219843. [PMID: 31318931 PMCID: PMC6638961 DOI: 10.1371/journal.pone.0219843] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 07/02/2019] [Indexed: 12/14/2022] Open
Abstract
Sugarcane (Saccharum spp.) has a complex genome with variable ploidy and frequent aneuploidy, which hampers the understanding of phenotype and genotype relations. Despite this complexity, genome-wide association studies (GWAS) may be used to identify favorable alleles for target traits in core collections and then assist breeders in better managing crosses and selecting superior genotypes in breeding populations. Therefore, in the present study, we used a diversity panel of sugarcane, called the Brazilian Panel of Sugarcane Genotypes (BPSG), with the following objectives: (i) estimate, through a mixed model, the adjusted means and genetic parameters of the five yield traits evaluated over two harvest years; (ii) detect population structure, linkage disequilibrium (LD) and genetic diversity using simple sequence repeat (SSR) markers; (iii) perform GWAS analysis to identify marker-trait associations (MTAs); and iv) annotate the sequences giving rise to SSR markers that had fragments associated with target traits to search for putative candidate genes. The phenotypic data analysis showed that the broad-sense heritability values were above 0.48 and 0.49 for the first and second harvests, respectively. The set of 100 SSR markers produced 1,483 fragments, of which 99.5% were polymorphic. These SSR fragments were useful to estimate the most likely number of subpopulations, found to be four, and the LD in BPSG, which was stronger in the first 15 cM and present to a large extension (65 cM). Genetic diversity analysis showed that, in general, the clustering of accessions within the subpopulations was in accordance with the pedigree information. GWAS performed through a multilocus mixed model revealed 23 MTAs, six, three, seven, four and three for soluble solid content, stalk height, stalk number, stalk weight and cane yield traits, respectively. These MTAs may be validated in other populations to support sugarcane breeding programs with introgression of favorable alleles and marker-assisted selection.
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35
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Bedre R, Irigoyen S, Schaker PDC, Monteiro-Vitorello CB, Da Silva JA, Mandadi KK. Genome-wide alternative splicing landscapes modulated by biotrophic sugarcane smut pathogen. Sci Rep 2019; 9:8876. [PMID: 31222001 PMCID: PMC6586842 DOI: 10.1038/s41598-019-45184-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 05/22/2019] [Indexed: 12/24/2022] Open
Abstract
Alternative splicing (AS) promotes transcriptome and proteome diversity during growth, development, and stress responses in eukaryotes. Genome-wide studies of AS in sugarcane (Saccharum spp.) are lacking, mainly due to the absence of a high-quality sequenced reference genome, sugarcane's large, complex genome, and the variable chromosome numbers and polyploidy of sugarcane cultivars. Here, we analyzed changes in the sugarcane isoform-level transcriptome and AS landscape during infection with the smut fungus (Sporisorium scitamineum) using a hybrid approach involving Sorghum bicolor reference-based and Trinity de novo mapping tools. In total, this analysis detected 16,039 and 15,379 transcripts (≥2 FPKM) at 5 and 200 days after infection, respectively. A conservative estimate of isoform-level expression suggested that approximately 5,000 (14%) sugarcane genes undergo AS. Differential expression analysis of the alternatively spliced genes in healthy and smut-infected sugarcane revealed 896 AS events modulated at different stages of infection. Gene family and gene ontology functional enrichment analysis of the differentially spliced genes revealed overrepresentation of functional categories related to the cell wall, defense, and redox homeostasis pathways. Our study provides novel insight into the AS landscape of sugarcane during smut disease interactions.
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Affiliation(s)
- Renesh Bedre
- Texas A&M AgriLife Research & Extension Center, Texas A&M University, Weslaco, TX, USA
| | - Sonia Irigoyen
- Texas A&M AgriLife Research & Extension Center, Texas A&M University, Weslaco, TX, USA
| | - Patricia D C Schaker
- Departamento de Genética, Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz," Piracicaba, São Paulo, Brazil
- Universidade Tecnológica Federal do Paraná, Toledo, Paraná, Brazil
| | - Claudia B Monteiro-Vitorello
- Departamento de Genética, Universidade de São Paulo, Escola Superior de Agricultura "Luiz de Queiroz," Piracicaba, São Paulo, Brazil
| | - Jorge A Da Silva
- Texas A&M AgriLife Research & Extension Center, Texas A&M University, Weslaco, TX, USA
- Department of Soil & Crop Sciences, Texas A&M University, College Station, TX, USA
| | - Kranthi K Mandadi
- Texas A&M AgriLife Research & Extension Center, Texas A&M University, Weslaco, TX, USA.
- Department of Plant Pathology & Microbiology, Texas A&M University, College Station, TX, USA.
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36
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Suguiyama VF, Vasconcelos LAB, Rossi MM, Biondo C, de Setta N. The population genetic structure approach adds new insights into the evolution of plant LTR retrotransposon lineages. PLoS One 2019; 14:e0214542. [PMID: 31107873 PMCID: PMC6527191 DOI: 10.1371/journal.pone.0214542] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 03/14/2019] [Indexed: 12/30/2022] Open
Abstract
Long terminal repeat retrotransposons (LTR-RTs) in plant genomes differ in abundance, structure and genomic distribution, reflecting the large number of evolutionary lineages. Elements within lineages can be considered populations, in which each element is an individual in its genomic environment. In this way, it would be reasonable to apply microevolutionary analyses to understand transposable element (TE) evolution, such as those used to study the genetic structure of natural populations. Here, we applied a Bayesian method to infer genetic structure of populations together with classical phylogenetic and dating tools to analyze LTR-RT evolution using the monocot Setaria italica as a model species. In contrast to a phylogeny, the Bayesian clusterization method identifies populations by assigning individuals to one or more clusters according to the most probabilistic scenario of admixture, based on genetic diversity patterns. In this work, each LTR-RT insertion was considered to be one individual and each LTR-RT lineage was considered to be a single species. Nine evolutionary lineages of LTR-RTs were identified in the S. italica genome that had different genetic structures with variable numbers of clusters and levels of admixture. Comprehensive analysis of the phylogenetic, clusterization and time of insertion data allowed us to hypothesize that admixed elements represent sequences that harbor ancestral polymorphic sequence signatures. In conclusion, application of microevolutionary concepts in genome evolution studies is suitable as a complementary approach to phylogenetic analyses to address the evolutionary history and functional features of TEs.
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Affiliation(s)
- Vanessa Fuentes Suguiyama
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, São Bernardo do Campo, SP, Brazil
| | | | - Maria Magdalena Rossi
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Cibele Biondo
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, São Bernardo do Campo, SP, Brazil
| | - Nathalia de Setta
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, São Bernardo do Campo, SP, Brazil
- * E-mail:
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37
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Sforça DA, Vautrin S, Cardoso-Silva CB, Mancini MC, Romero-da Cruz MV, Pereira GDS, Conte M, Bellec A, Dahmer N, Fourment J, Rodde N, Van Sluys MA, Vicentini R, Garcia AAF, Forni-Martins ER, Carneiro MS, Hoffmann HP, Pinto LR, Landell MGDA, Vincentz M, Berges H, de Souza AP. Gene Duplication in the Sugarcane Genome: A Case Study of Allele Interactions and Evolutionary Patterns in Two Genic Regions. FRONTIERS IN PLANT SCIENCE 2019; 10:553. [PMID: 31134109 PMCID: PMC6514446 DOI: 10.3389/fpls.2019.00553] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 04/11/2019] [Indexed: 05/25/2023]
Abstract
Sugarcane (Saccharum spp.) is highly polyploid and aneuploid. Modern cultivars are derived from hybridization between S. officinarum and S. spontaneum. This combination results in a genome exhibiting variable ploidy among different loci, a huge genome size (~10 Gb) and a high content of repetitive regions. An approach using genomic, transcriptomic, and genetic mapping can improve our knowledge of the behavior of genetics in sugarcane. The hypothetical HP600 and Centromere Protein C (CENP-C) genes from sugarcane were used to elucidate the allelic expression and genomic and genetic behaviors of this complex polyploid. The physically linked side-by-side genes HP600 and CENP-C were found in two different homeologous chromosome groups with ploidies of eight and ten. The first region (Region01) was a Sorghum bicolor ortholog region with all haplotypes of HP600 and CENP-C expressed, but HP600 exhibited an unbalanced haplotype expression. The second region (Region02) was a scrambled sugarcane sequence formed from different noncollinear genes containing partial duplications of HP600 and CENP-C (paralogs). This duplication resulted in a non-expressed HP600 pseudogene and a recombined fusion version of CENP-C and the orthologous gene Sobic.003G299500 with at least two chimeric gene haplotypes expressed. It was also determined that it occurred before Saccharum genus formation and after the separation of sorghum and sugarcane. A linkage map was constructed using markers from nonduplicated Region01 and for the duplication (Region01 and Region02). We compare the physical and linkage maps, demonstrating the possibility of mapping markers located in duplicated regions with markers in nonduplicated region. Our results contribute directly to the improvement of linkage mapping in complex polyploids and improve the integration of physical and genetic data for sugarcane breeding programs. Thus, we describe the complexity involved in sugarcane genetics and genomics and allelic dynamics, which can be useful for understanding complex polyploid genomes.
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Affiliation(s)
| | - Sonia Vautrin
- Centre National de Ressources Genomiques Vegetales (CNRGV), Institut National de la Recherche Agronomique (INRA), Castanet Tolosan, France
| | | | | | | | | | - Mônica Conte
- Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | - Arnaud Bellec
- Centre National de Ressources Genomiques Vegetales (CNRGV), Institut National de la Recherche Agronomique (INRA), Castanet Tolosan, France
| | - Nair Dahmer
- Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | - Joelle Fourment
- Centre National de Ressources Genomiques Vegetales (CNRGV), Institut National de la Recherche Agronomique (INRA), Castanet Tolosan, France
| | - Nathalie Rodde
- Centre National de Ressources Genomiques Vegetales (CNRGV), Institut National de la Recherche Agronomique (INRA), Castanet Tolosan, France
| | | | | | | | | | | | - Hermann Paulo Hoffmann
- Centro de Ciências Agrárias, Universidade Federal de São Carlos (UFSCAR), Araras, Brazil
| | | | | | - Michel Vincentz
- Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | - Helene Berges
- Centre National de Ressources Genomiques Vegetales (CNRGV), Institut National de la Recherche Agronomique (INRA), Castanet Tolosan, France
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38
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Research and partnership in studies of sugarcane using molecular markers: a scientometric approach. Scientometrics 2019. [DOI: 10.1007/s11192-019-03047-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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39
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Figueiredo R, Araújo P, Llerena JPP, Mazzafera P. Suberin and hemicellulose in sugarcane cell wall architecture and crop digestibility: A biotechnological perspective. Food Energy Secur 2019. [DOI: 10.1002/fes3.163] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Raquel Figueiredo
- Department of Plant Biology Institute of Biology State University of Campinas Campinas Brazil
| | - Pedro Araújo
- Department of Genetics, Evolution and Bioagents Institute of Biology State University of Campinas Campinas Brazil
| | - Juan Pablo P. Llerena
- Department of Plant Biology Institute of Biology State University of Campinas Campinas Brazil
| | - Paulo Mazzafera
- Department of Plant Biology Institute of Biology State University of Campinas Campinas Brazil
- Department of Crop Science College of Agriculture Luiz de Queiroz University of São Paulo Piracicaba Brazil
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Grativol C, Thiebaut F, Sangi S, Montessoro P, Santos WDS, Hemerly AS, Ferreira PC. A miniature inverted-repeat transposable element, AddIn-MITE, located inside a WD40 gene is conserved in Andropogoneae grasses. PeerJ 2019; 7:e6080. [PMID: 30648010 PMCID: PMC6331000 DOI: 10.7717/peerj.6080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 11/07/2018] [Indexed: 11/25/2022] Open
Abstract
Miniature inverted-repeat transposable elements (MITEs) have been associated with genic regions in plant genomes and may play important roles in the regulation of nearby genes via recruitment of small RNAs (sRNA) to the MITEs loci. We identified eight families of MITEs in the sugarcane genome assembly with MITE-Hunter pipeline. These sequences were found to be upstream, downstream or inserted into 67 genic regions in the genome. The position of the most abundant MITE (Stowaway-like) in genic regions, which we call AddIn-MITE, was confirmed in a WD40 gene. The analysis of four monocot species showed conservation of the AddIn-MITE sequence, with a large number of copies in their genomes. We also investigated the conservation of the AddIn-MITE’ position in the WD40 genes from sorghum, maize and, in sugarcane cultivars and wild Saccharum species. In all analyzed plants, AddIn-MITE has located in WD40 intronic region. Furthermore, the role of AddIn-MITE-related sRNA in WD40 genic region was investigated. We found sRNAs preferentially mapped to the AddIn-MITE than to other regions in the WD40 gene in sugarcane. In addition, the analysis of the small RNA distribution patterns in the WD40 gene and the structure of AddIn-MITE, suggests that the MITE region is a proto-miRNA locus in sugarcane. Together, these data provide insights into the AddIn-MITE role in Andropogoneae grasses.
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Affiliation(s)
- Clicia Grativol
- Laboratório de Química e Função de Proteínas e Peptídeos/Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, Rio de Janeiro, Brazil
| | - Flavia Thiebaut
- Laboratório de Biologia Molecular de Plantas/Instituto de Bioquímica Médica Leopoldo De Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sara Sangi
- Laboratório de Química e Função de Proteínas e Peptídeos/Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, Rio de Janeiro, Brazil
| | - Patricia Montessoro
- Laboratório de Biologia Molecular de Plantas/Instituto de Bioquímica Médica Leopoldo De Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Walaci da Silva Santos
- Laboratório de Química e Função de Proteínas e Peptídeos/Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, Rio de Janeiro, Brazil
| | - Adriana S. Hemerly
- Laboratório de Biologia Molecular de Plantas/Instituto de Bioquímica Médica Leopoldo De Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paulo C.G. Ferreira
- Laboratório de Biologia Molecular de Plantas/Instituto de Bioquímica Médica Leopoldo De Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
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Tavares EQP, De Souza AP, Romim GH, Grandis A, Plasencia A, Gaiarsa JW, Grima-Pettenati J, de Setta N, Van Sluys MA, Buckeridge MS. The control of endopolygalacturonase expression by the sugarcane RAV transcription factor during aerenchyma formation. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:497-506. [PMID: 30605523 PMCID: PMC6322575 DOI: 10.1093/jxb/ery362] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 10/10/2018] [Indexed: 05/22/2023]
Abstract
The development of lysigenous aerenchyma starts with cell expansion and degradation of pectin from the middle lamella, leading to cell wall modification, and culminating with cell separation. Here we report that nutritional starvation of sugarcane induced gene expression along sections of the first 5 cm of the root and between treatments. We selected two candidate genes: a RAV transcription factor, from the ethylene response factors superfamily, and an endopolygalacturonase (EPG), a glycosyl hydrolase related to homogalacturonan hydrolysis from the middle lamella. epg1 and rav1 transcriptional patterns suggest they are essential genes at the initial steps of pectin degradation during aerenchyma development in sugarcane. Due to the high complexity of the sugarcane genome, rav1 and epg1 were sequenced from 17 bacterial artificial chromosome clones containing hom(e)ologous genomic regions, and the sequences were compared with those of Sorghum bicolor. We used one hom(e)olog sequence from each gene for transactivation assays in tobacco. rav1 was shown to bind to the epg1 promoter, repressing β-glucuronidase activity. RAV repression upon epg1 transcription is the first reported link between ethylene regulation and pectin hydrolysis during aerenchyma formation. Our findings may help to elucidate cell wall degradation in sugarcane and therefore contribute to second-generation bioethanol production.
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Affiliation(s)
- Eveline Q P Tavares
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, SP, Brazil
| | - Amanda P De Souza
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, SP, Brazil
| | - Grayce H Romim
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, SP, Brazil
| | - Adriana Grandis
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, SP, Brazil
| | - Anna Plasencia
- LRSV, Laboratoire de Recherche en Sciences Végétales, UMR5546, Université Paul Sabatier Toulouse III/CNRS Castanet-Tolosan, France
| | - Jonas W Gaiarsa
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, SP, Brazil
- Tau Bioinformatics, São Paulo, SP, Brazil
| | - Jacqueline Grima-Pettenati
- LRSV, Laboratoire de Recherche en Sciences Végétales, UMR5546, Université Paul Sabatier Toulouse III/CNRS Castanet-Tolosan, France
| | - Nathalia de Setta
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, SP, Brazil
- Centro de Ciências Naturais e Humanas. Universidade Federal do ABC, São André, SP, Brazil
| | - Marie-Anne Van Sluys
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, SP, Brazil
| | - Marcos S Buckeridge
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, SP, Brazil
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42
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Munhoz CF, Costa ZP, Cauz-Santos LA, Reátegui ACE, Rodde N, Cauet S, Dornelas MC, Leroy P, Varani ADM, Bergès H, Vieira MLC. A gene-rich fraction analysis of the Passiflora edulis genome reveals highly conserved microsyntenic regions with two related Malpighiales species. Sci Rep 2018; 8:13024. [PMID: 30158558 PMCID: PMC6115403 DOI: 10.1038/s41598-018-31330-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 08/14/2018] [Indexed: 12/22/2022] Open
Abstract
Passiflora edulis is the most widely cultivated species of passionflowers, cropped mainly for industrialized juice production and fresh fruit consumption. Despite its commercial importance, little is known about the genome structure of P. edulis. To fill in this gap in our knowledge, a genomic library was built, and now completely sequenced over 100 large-inserts. Sequencing data were assembled from long sequence reads, and structural sequence annotation resulted in the prediction of about 1,900 genes, providing data for subsequent functional analysis. The richness of repetitive elements was also evaluated. Microsyntenic regions of P. edulis common to Populus trichocarpa and Manihot esculenta, two related Malpighiales species with available fully sequenced genomes were examined. Overall, gene order was well conserved, with some disruptions of collinearity identified as rearrangements, such as inversion and translocation events. The microsynteny level observed between the P. edulis sequences and the compared genomes is surprising, given the long divergence time that separates them from the common ancestor. P. edulis gene-rich segments are more compact than those of the other two species, even though its genome is much larger. This study provides a first accurate gene set for P. edulis, opening the way for new studies on the evolutionary issues in Malpighiales genomes.
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Affiliation(s)
- Carla Freitas Munhoz
- Departamento de Genética, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, 13418-900, Piracicaba, Brazil
| | - Zirlane Portugal Costa
- Departamento de Genética, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, 13418-900, Piracicaba, Brazil
| | - Luiz Augusto Cauz-Santos
- Departamento de Genética, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, 13418-900, Piracicaba, Brazil
| | - Alina Carmen Egoávil Reátegui
- Departamento de Genética, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, 13418-900, Piracicaba, Brazil
| | - Nathalie Rodde
- Institut National de la Recherche Agronomique (INRA), Centre National de Ressources Génomique Végétales, 31326, Castanet-Tolosan, France
| | - Stéphane Cauet
- Institut National de la Recherche Agronomique (INRA), Centre National de Ressources Génomique Végétales, 31326, Castanet-Tolosan, France
| | - Marcelo Carnier Dornelas
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, 13083-862, Campinas, Brazil
| | - Philippe Leroy
- INRA, UCA, UMR 1095, GDEC, 63000, Clermont-Ferrand, France
| | - Alessandro de Mello Varani
- Departamento de Tecnologia, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, 14884-900, Jaboticabal, Brazil
| | - Hélène Bergès
- Institut National de la Recherche Agronomique (INRA), Centre National de Ressources Génomique Végétales, 31326, Castanet-Tolosan, France
| | - Maria Lucia Carneiro Vieira
- Departamento de Genética, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, 13418-900, Piracicaba, Brazil.
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43
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Garsmeur O, Droc G, Antonise R, Grimwood J, Potier B, Aitken K, Jenkins J, Martin G, Charron C, Hervouet C, Costet L, Yahiaoui N, Healey A, Sims D, Cherukuri Y, Sreedasyam A, Kilian A, Chan A, Van Sluys MA, Swaminathan K, Town C, Bergès H, Simmons B, Glaszmann JC, van der Vossen E, Henry R, Schmutz J, D'Hont A. A mosaic monoploid reference sequence for the highly complex genome of sugarcane. Nat Commun 2018; 9:2638. [PMID: 29980662 PMCID: PMC6035169 DOI: 10.1038/s41467-018-05051-5] [Citation(s) in RCA: 179] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 06/13/2018] [Indexed: 01/31/2023] Open
Abstract
Sugarcane (Saccharum spp.) is a major crop for sugar and bioenergy production. Its highly polyploid, aneuploid, heterozygous, and interspecific genome poses major challenges for producing a reference sequence. We exploited colinearity with sorghum to produce a BAC-based monoploid genome sequence of sugarcane. A minimum tiling path of 4660 sugarcane BAC that best covers the gene-rich part of the sorghum genome was selected based on whole-genome profiling, sequenced, and assembled in a 382-Mb single tiling path of a high-quality sequence. A total of 25,316 protein-coding gene models are predicted, 17% of which display no colinearity with their sorghum orthologs. We show that the two species, S. officinarum and S. spontaneum, involved in modern cultivars differ by their transposable elements and by a few large chromosomal rearrangements, explaining their distinct genome size and distinct basic chromosome numbers while also suggesting that polyploidization arose in both lineages after their divergence.
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Affiliation(s)
- Olivier Garsmeur
- CIRAD (Centre de Coopération Internationale en Recherche Agronomique pour le Développement), UMR AGAP, F-34398, Montpellier, France.,AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, 34060, Montpellier, France
| | - Gaetan Droc
- CIRAD (Centre de Coopération Internationale en Recherche Agronomique pour le Développement), UMR AGAP, F-34398, Montpellier, France.,AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, 34060, Montpellier, France
| | | | - Jane Grimwood
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, 35801, USA
| | - Bernard Potier
- SASRI (South African Sugarcane Research Institute), Mount Edgecombe, 4300, South Africa
| | - Karen Aitken
- CSIRO (Commonwealth Scientific and Industrial Research Organisation), St. Lucia, QLD, 4067, Australia
| | - Jerry Jenkins
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, 35801, USA
| | - Guillaume Martin
- CIRAD (Centre de Coopération Internationale en Recherche Agronomique pour le Développement), UMR AGAP, F-34398, Montpellier, France.,AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, 34060, Montpellier, France
| | - Carine Charron
- CIRAD (Centre de Coopération Internationale en Recherche Agronomique pour le Développement), UMR AGAP, F-34398, Montpellier, France.,AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, 34060, Montpellier, France
| | - Catherine Hervouet
- CIRAD (Centre de Coopération Internationale en Recherche Agronomique pour le Développement), UMR AGAP, F-34398, Montpellier, France.,AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, 34060, Montpellier, France
| | - Laurent Costet
- CIRAD, UMR PVBMT, F-97410, Saint-Pierre, La Réunion, France
| | - Nabila Yahiaoui
- CIRAD (Centre de Coopération Internationale en Recherche Agronomique pour le Développement), UMR AGAP, F-34398, Montpellier, France.,AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, 34060, Montpellier, France
| | - Adam Healey
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, 35801, USA
| | - David Sims
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, 35801, USA
| | | | | | - Andrzej Kilian
- Diversity Arrays Technology, Yarralumla, ACT, 2600, Australia
| | - Agnes Chan
- J. Craig Venter Institute, Rockville, MD, 20850, USA
| | | | | | | | - Hélène Bergès
- INRA-CNRGV, 31326, Toulouse, Castanet-Tolosan, France
| | - Blake Simmons
- JBEI Joint BioEnergy Institute, Emeryville, CA, 94608, USA
| | - Jean Christophe Glaszmann
- CIRAD (Centre de Coopération Internationale en Recherche Agronomique pour le Développement), UMR AGAP, F-34398, Montpellier, France.,AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, 34060, Montpellier, France
| | | | - Robert Henry
- QAAFI (Queensland Alliance for Agriculture and Food Innovation), University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Jeremy Schmutz
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, 35801, USA.,Department of Energy, Joint Genome Institute, Walnut Creek, CA, 94598, USA
| | - Angélique D'Hont
- CIRAD (Centre de Coopération Internationale en Recherche Agronomique pour le Développement), UMR AGAP, F-34398, Montpellier, France. .,AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, 34060, Montpellier, France.
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Ferreira DA, Martins MCM, Cheavegatti-Gianotto A, Carneiro MS, Amadeu RR, Aricetti JA, Wolf LD, Hoffmann HP, de Abreu LGF, Caldana C. Metabolite Profiles of Sugarcane Culm Reveal the Relationship Among Metabolism and Axillary Bud Outgrowth in Genetically Related Sugarcane Commercial Cultivars. FRONTIERS IN PLANT SCIENCE 2018; 9:857. [PMID: 29988592 PMCID: PMC6027322 DOI: 10.3389/fpls.2018.00857] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 06/01/2018] [Indexed: 05/04/2023]
Abstract
Metabolic composition is known to exert influence on several important agronomic traits, and metabolomics, which represents the chemical composition in a cell, has long been recognized as a powerful tool for bridging phenotype-genotype interactions. In this work, sixteen truly representative sugarcane Brazilian varieties were selected to explore the metabolic networks in buds and culms, the tissues involved in the vegetative propagation of this species. Due to the fact that bud sprouting is a key trait determining crop establishment in the field, the sprouting potential among the genotypes was evaluated. The use of partial least square discriminant analysis indicated only mild differences on bud outgrowth potential under controlled environmental conditions. However, primary metabolite profiling provided information on the variability of metabolic features even under a narrow genetic background, typical for modern sugarcane cultivars. Metabolite-metabolite correlations within and between tissues revealed more complex patterns for culms in relation to buds, and enabled the recognition of key metabolites (e.g., sucrose, putrescine, glutamate, serine, and myo-inositol) affecting sprouting ability. Finally, those results were associated with the genetic background of each cultivar, showing that metabolites can be potentially used as indicators for the genetic background.
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Affiliation(s)
- Danilo A. Ferreira
- Brazilian Bioethanol Science and Technology Laboratory, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, Brazil
- Genetics and Molecular Biology Graduate Program, University of Campinas, Campinas, Brazil
| | - Marina C. M. Martins
- Brazilian Bioethanol Science and Technology Laboratory, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, Brazil
| | - Adriana Cheavegatti-Gianotto
- Brazilian Bioethanol Science and Technology Laboratory, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, Brazil
| | - Monalisa S. Carneiro
- Department of Biotechnology and Plant and Animal Production, Center for Agricultural Sciences, Federal University of São Carlos, São Carlos, Brazil
| | - Rodrigo R. Amadeu
- Department of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, Brazil
| | - Juliana A. Aricetti
- Brazilian Bioethanol Science and Technology Laboratory, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, Brazil
| | - Lucia D. Wolf
- Brazilian Bioethanol Science and Technology Laboratory, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, Brazil
| | - Hermann P. Hoffmann
- Department of Biotechnology and Plant and Animal Production, Center for Agricultural Sciences, Federal University of São Carlos, São Carlos, Brazil
| | - Luis G. F. de Abreu
- Brazilian Bioethanol Science and Technology Laboratory, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, Brazil
| | - Camila Caldana
- Brazilian Bioethanol Science and Technology Laboratory, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, Brazil
- Max-Planck Partner Group, Brazilian Bioethanol Science and Technology Laboratory, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, Brazil
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45
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Vieira MLC, Almeida CB, Oliveira CA, Tacuatiá LO, Munhoz CF, Cauz-Santos LA, Pinto LR, Monteiro-Vitorello CB, Xavier MA, Forni-Martins ER. Revisiting Meiosis in Sugarcane: Chromosomal Irregularities and the Prevalence of Bivalent Configurations. Front Genet 2018; 9:213. [PMID: 29963076 PMCID: PMC6010537 DOI: 10.3389/fgene.2018.00213] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Accepted: 05/25/2018] [Indexed: 12/01/2022] Open
Abstract
Traditional sugarcane cultivars (Saccharum officinarum) proved highly susceptible to diseases, and this led breeders to progress to interspecific crosses resulting in disease resistance. A backcrossing program to S. officinarum was then required to boost sucrose content. Clonal selection across generations and incorporation of other germplasm into cultivated backgrounds established the (narrow) genetic base of modern cultivars (Saccharum spp.), which have a man-made genome. The genome complexity has inspired several molecular studies that have elucidated aspects of sugarcane genome constitution, architecture, and cytogenetics. However, there is a critical shortage of information on chromosome behavior throughout meiosis in modern cultivars. In this study, we examined the microsporogenesis of a contemporary variety, providing a detailed analysis of the meiotic process and chromosome association at diakinesis, using FISH with centromeric probes. Chromosomal abnormalities were documented by examining high quality preparations of pollen mother cells (700 in total). Approximately 70% of the cells showed abnormalities, such as metaphase chromosomes not lined up at the plate, lagging chromosomes and chromosomal bridges, and tetrad cells with micronuclei. Some dyads with asynchronous behavior were also observed. Due to the hybrid composition of the sugarcane genome, we suggest that bivalent incomplete pairing may occur in the first prophase leading to univalency. The presence of rod bivalents showing the lagging tendency is consistent with a reduction in chiasma frequency. Finally, the presence of chromatin bridges indicates the indirect occurrence of chromosomal inversions, although chromosome fragments were not clearly recognized. Possible reasons for such meiotic abnormalities and the large prevalence of bivalent formation are discussed.
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Affiliation(s)
- Maria Lucia C Vieira
- Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, Brazil
| | - Carmelice B Almeida
- Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, Brazil
| | - Carlos A Oliveira
- Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, Brazil
| | - Luana O Tacuatiá
- Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil
| | - Carla F Munhoz
- Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, Brazil
| | - Luiz A Cauz-Santos
- Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, Brazil
| | - Luciana R Pinto
- Centro de Cana, Instituto Agronômico de Campinas, Ribeirão Preto, Brazil
| | | | - Mauro A Xavier
- Centro de Cana, Instituto Agronômico de Campinas, Ribeirão Preto, Brazil
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Kannan B, Jung JH, Moxley GW, Lee S, Altpeter F. TALEN-mediated targeted mutagenesis of more than 100 COMT copies/alleles in highly polyploid sugarcane improves saccharification efficiency without compromising biomass yield. PLANT BIOTECHNOLOGY JOURNAL 2018; 16:856-866. [PMID: 28905511 PMCID: PMC5866949 DOI: 10.1111/pbi.12833] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/23/2017] [Accepted: 09/01/2017] [Indexed: 05/02/2023]
Abstract
Sugarcane is the world's most efficient feedstock for commercial production of bioethanol due to its superior biomass production and accumulation of sucrose in stems. Integrating first- and second-generation ethanol conversion processes will enhance the biofuel yield per unit area by utilizing both sucrose and cell wall-bound sugars for fermentation. RNAi suppression of the lignin biosynthetic gene caffeic acid O-methyltransferase (COMT) has been demonstrated to improve bioethanol production from lignocellulosic biomass. Genome editing has been used in a number of crops for creation of loss of function phenotypes but is very challenging in sugarcane due to its highly polyploid genome. In this study, a conserved region of COMT was targeted with a single-transcription activator-like effector nuclease (TALEN) pair for multi-allelic mutagenesis to modify lignin biosynthesis in sugarcane. Field-grown TALEN-mediated COMT mutants showed up to 19.7% lignin reduction and significantly decreased syringyl to guaiacyl (S/G) ratio resulting in an up to 43.8% improved saccharification efficiency. Biomass production of COMT mutant lines with superior saccharification efficiency did not differ significantly from the original cultivar under replicated field conditions. Sanger sequencing of cloned COMT amplicons (1351-1657 bp) revealed co-editing of 107 of the 109 unique COMT copies/alleles in vegetative progeny of line CB6 using a single TALEN pair. Line CB6 combined altered cell wall composition and drastically improved saccharification efficiency with good agronomic performance. These findings confirm the feasibility of co-mutagenesis of a very large number of target alleles/copies for improvement in crops with complex genomes.
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Affiliation(s)
- Baskaran Kannan
- Agronomy DepartmentIFAS, University of FloridaGainesvilleFLUSA
| | - Je Hyeong Jung
- Agronomy DepartmentIFAS, University of FloridaGainesvilleFLUSA
- Present address:
Center for Natural Products Convergence ResearchKorea Institute of Science and Technology (KIST)GangneungGangwon‐doSouth Korea
| | | | - Sun‐Mi Lee
- Clean Energy Research CenterKorea Institute of Science and Technology (KIST)SeoulSouth Korea
| | - Fredy Altpeter
- Agronomy DepartmentIFAS, University of FloridaGainesvilleFLUSA
- Plant Molecular and Cellular Biology ProgramIFAS, University of FloridaGainesvilleFLUSA
- Genetics InstituteUniversity of FloridaGainesvilleFLUSA
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47
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Mancini MC, Cardoso-Silva CB, Sforça DA, Pereira de Souza A. "Targeted Sequencing by Gene Synteny," a New Strategy for Polyploid Species: Sequencing and Physical Structure of a Complex Sugarcane Region. FRONTIERS IN PLANT SCIENCE 2018; 9:397. [PMID: 29643861 PMCID: PMC5882829 DOI: 10.3389/fpls.2018.00397] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 03/12/2018] [Indexed: 05/25/2023]
Abstract
Sugarcane exhibits a complex genome mainly due to its aneuploid nature and high ploidy level, and sequencing of its genome poses a great challenge. Closely related species with well-assembled and annotated genomes can be used to help assemble complex genomes. Here, a stable quantitative trait locus (QTL) related to sugar accumulation in sorghum was successfully transferred to the sugarcane genome. Gene sequences related to this QTL were identified in silico from sugarcane transcriptome data, and molecular markers based on these sequences were developed to select bacterial artificial chromosome (BAC) clones from the sugarcane variety SP80-3280. Sixty-eight BAC clones containing at least two gene sequences associated with the sorghum QTL were sequenced using Pacific Biosciences (PacBio) technology. Twenty BAC sequences were found to be related to the syntenic region, of which nine were sufficient to represent this region. The strategy we propose is called "targeted sequencing by gene synteny," which is a simpler approach to understanding the genome structure of complex genomic regions associated with traits of interest.
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Affiliation(s)
- Melina C. Mancini
- Center for Molecular Biology and Genetic Engineering, University of Campinas, Campinas, Brazil
| | | | - Danilo A. Sforça
- Center for Molecular Biology and Genetic Engineering, University of Campinas, Campinas, Brazil
| | - Anete Pereira de Souza
- Center for Molecular Biology and Genetic Engineering, University of Campinas, Campinas, Brazil
- Departament Plant Biology, Biology Institute, University of Campinas, Campinas, Brazil
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48
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Thirugnanasambandam PP, Hoang NV, Henry RJ. The Challenge of Analyzing the Sugarcane Genome. FRONTIERS IN PLANT SCIENCE 2018; 9:616. [PMID: 29868072 PMCID: PMC5961476 DOI: 10.3389/fpls.2018.00616] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 04/18/2018] [Indexed: 05/04/2023]
Abstract
Reference genome sequences have become key platforms for genetics and breeding of the major crop species. Sugarcane is probably the largest crop produced in the world (in weight of crop harvested) but lacks a reference genome sequence. Sugarcane has one of the most complex genomes in crop plants due to the extreme level of polyploidy. The genome of modern sugarcane hybrids includes sub-genomes from two progenitors Saccharum officinarum and S. spontaneum with some chromosomes resulting from recombination between these sub-genomes. Advancing DNA sequencing technologies and strategies for genome assembly are making the sugarcane genome more tractable. Advances in long read sequencing have allowed the generation of a more complete set of sugarcane gene transcripts. This is supporting transcript profiling in genetic research. The progenitor genomes are being sequenced. A monoploid coverage of the hybrid genome has been obtained by sequencing BAC clones that cover the gene space of the closely related sorghum genome. The complete polyploid genome is now being sequenced and assembled. The emerging genome will allow comparison of related genomes and increase understanding of the functioning of this polyploidy system. Sugarcane breeding for traditional sugar and new energy and biomaterial uses will be enhanced by the availability of these genomic resources.
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Affiliation(s)
- Prathima P. Thirugnanasambandam
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, QLD, Australia
- ICAR - Sugarcane Breeding Institute, Coimbatore, India
- *Correspondence: Prathima P. Thirugnanasambandam,
| | - Nam V. Hoang
- College of Agriculture and Forestry, Hue University, Hue, Vietnam
| | - Robert J. Henry
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, QLD, Australia
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49
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Dong G, Shen J, Zhang Q, Wang J, Yu Q, Ming R, Wang K, Zhang J. Development and Applications of Chromosome-Specific Cytogenetic BAC-FISH Probes in S. spontaneum. FRONTIERS IN PLANT SCIENCE 2018; 9:218. [PMID: 29535742 PMCID: PMC5834487 DOI: 10.3389/fpls.2018.00218] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Saccharum spontaneum is a major Saccharum species that contributed to the origin of modern sugarcane cultivars, and due to a high degree of polyploidy is considered to be a plant species with one of the most complex genetics. Fluorescence in situ hybridization (FISH) is a powerful and widely used tool in genome studies. Here, we demonstrated that FISH based on bacterial artificial chromosome (BAC) clones can be used as a specific cytological marker to identify S. spontaneum individual chromosomes and study the relationship between S. spontaneum and other related species. We screened low-copy BACs as probes from the sequences of a high coverage of S. spontaneum BAC library based on BLAST search of the sorghum genome. In total, we isolated 49 positive BAC clones, and identified 27 BAC clones that can give specific signals on the S. spontaneum chromosomes. Of the 27 BAC probes, 18 were confirmed to be able to discriminate the eight basic chromosomes of S. spontaneum. Moreover, BAC-24, BAC-66, BAC-78, BAC-69, BAC-71, BAC-73, and BAC-77 probes were used to construct physical maps of chromosome 1 and chromosome 2 of S. spontaneum, which indicated synteny in Sb01 between S. spontaneum and sorghum. Furthermore, we found that BAC-14 and BAC-19 probes, corresponding to the sorghum chromosomes 2 and 8, respectively, localized to different arms of the same S. spontaneum chromosome, suggesting that there was an inter-chromosomal rearrangement event between S. spontaneum and sorghum. Our study provides the first set of chromosome-specific cytogenetic markers in Saccharum and is critical for future advances in cytogenetics and genome sequencing studies in Saccharum.
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Affiliation(s)
- Guangrui Dong
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Haixia Institute of Science and Technology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jiao Shen
- College of Life Sciences, Fujian Normal University, Fuzhou, China
| | - Qing Zhang
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Haixia Institute of Science and Technology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jianping Wang
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Haixia Institute of Science and Technology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Agronomy Department, University of Florida, Gainesville, FL, United States
| | - Qingyi Yu
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Haixia Institute of Science and Technology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Ray Ming
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Haixia Institute of Science and Technology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Texas A&M AgriLife Research Center, Department of Plant Pathology and Microbiology, Texas A&M University System, Dallas, TX, United States
| | - Kai Wang
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Haixia Institute of Science and Technology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jisen Zhang
- Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Haixia Institute of Science and Technology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Life Sciences, Fujian Normal University, Fuzhou, China
- *Correspondence: Jisen Zhang,
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Vilela MDM, Del Bem LE, Van Sluys MA, de Setta N, Kitajima JP, Cruz GMQ, Sforça DA, de Souza AP, Ferreira PCG, Grativol C, Cardoso-Silva CB, Vicentini R, Vincentz M. Analysis of Three Sugarcane Homo/Homeologous Regions Suggests Independent Polyploidization Events of Saccharum officinarum and Saccharum spontaneum. Genome Biol Evol 2017; 9:266-278. [PMID: 28082603 PMCID: PMC5381655 DOI: 10.1093/gbe/evw293] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2016] [Indexed: 12/23/2022] Open
Abstract
Whole genome duplication has played an important role in plant evolution and diversification. Sugarcane is an important crop with a complex hybrid polyploid genome, for which the process of adaptation to polyploidy is still poorly understood. In order to improve our knowledge about sugarcane genome evolution and the homo/homeologous gene expression balance, we sequenced and analyzed 27 BACs (Bacterial Artificial Chromosome) of sugarcane R570 cultivar, containing the putative single-copy genes LFY (seven haplotypes), PHYC (four haplotypes), and TOR (seven haplotypes). Comparative genomic approaches showed that these sugarcane loci presented a high degree of conservation of gene content and collinearity (synteny) with sorghum and rice orthologous regions, but were invaded by transposable elements (TE). All the homo/homeologous haplotypes of LFY, PHYC, and TOR are likely to be functional, because they are all under purifying selection (dN/dS ≪ 1). However, they were found to participate in a nonequivalently manner to the overall expression of the corresponding gene. SNPs, indels, and amino acid substitutions allowed inferring the S. officinarum or S. spontaneum origin of the TOR haplotypes, which further led to the estimation that these two sugarcane ancestral species diverged between 2.5 and 3.5 Ma. In addition, analysis of shared TE insertions in TOR haplotypes suggested that two autopolyploidization may have occurred in the lineage that gave rise to S. officinarum, after its divergence from S. spontaneum.
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Affiliation(s)
- Mariane de Mendonça Vilela
- Centro de Biologia Molecular e Engenharia Genética, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Luiz Eduardo Del Bem
- Centro de Biologia Molecular e Engenharia Genética, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Marie-Anne Van Sluys
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, SP, Brazil
| | - Nathalia de Setta
- Universidade Federal do ABC (UFABC), São Bernardo do Campo, SP, Brazil
| | | | | | - Danilo Augusto Sforça
- Centro de Biologia Molecular e Engenharia Genética, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Anete Pereira de Souza
- Centro de Biologia Molecular e Engenharia Genética, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | | | - Clícia Grativol
- Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Parque Califórnia, Campos dos Goytacazes, RJ, Brazil
| | - Claudio Benicio Cardoso-Silva
- Centro de Biologia Molecular e Engenharia Genética, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Renato Vicentini
- Centro de Biologia Molecular e Engenharia Genética, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Michel Vincentz
- Centro de Biologia Molecular e Engenharia Genética, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
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