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Wu Y, Liu J, Jiao B, Wang T, Sun S, Huang B. Genome-Wide Analysis of Family-1 UDP-Glycosyltransferases in Potato ( Solanum tuberosum L.): Identification, Phylogenetic Analysis and Determination of Response to Osmotic Stress. Genes (Basel) 2023; 14:2144. [PMID: 38136966 PMCID: PMC10742590 DOI: 10.3390/genes14122144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/16/2023] [Accepted: 11/22/2023] [Indexed: 12/24/2023] Open
Abstract
Family-1 UDP-glycosyltransferases (UGTs) are the most common and functional glycosyltransferases in the plant world. UGT is closely related to plant growth and the response to abiotic stress. However, despite systematic research, our understanding of potato UGT genes is still unclear. In this study, we identified 174 potato UGT proteins based on their conserved plant secondary product glycosyltransferase (PSPG) motifs. Phylogenetic analyses were used to compare these proteins with Arabidopsis UGTs and other plant UGTs, and it was found that they could be clustered into 18 distinct groups. Patterns of intron gain/loss and intron phases within potato UGTs revealed highly conserved intron insertion events. The promoter cis-elements of these 174 UGT genes were systematically investigated. The promoter regions of these UGT genes are known to contain various classes of cis-acting compounds. These include elements that are light-responsive, phytohormone-responsive, and stress-responsive. Transcriptome data analysis established that 25, 10, 6, and 4 of these 174 UGT genes were specifically expressed in leaves, roots, stolons, and young tubers, respectively. The mannitol-treated transcriptomic data showed thirty-eight UGT genes were significantly upregulated. The quantitative real-time PCR results showed that the four genes were all responsive to osmotic stress under a 10% PEG6000 treatment. The results of our study provide a basis for clarifying the molecular mechanism of potato osmotic stress resistance and better understanding its function in the future.
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Affiliation(s)
- Yongchao Wu
- School of Agriculture, Yunnan University, Kunming 650504, China
| | - Jie Liu
- School of Agriculture, Yunnan University, Kunming 650504, China
| | - Baozhen Jiao
- School of Agriculture, Yunnan University, Kunming 650504, China
| | - Tingting Wang
- School of Agriculture, Yunnan University, Kunming 650504, China
| | - Sifan Sun
- School of Agriculture, Yunnan University, Kunming 650504, China
| | - Binquan Huang
- School of Agriculture, Yunnan University, Kunming 650504, China
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Li H, Li Y, Wang X, Jiao Z, Zhang W, Long Y. Characterization of Glycosyltransferase Family 1 (GT1) and Their Potential Roles in Anthocyanin Biosynthesis in Maize. Genes (Basel) 2023; 14:2099. [PMID: 38003042 PMCID: PMC10671782 DOI: 10.3390/genes14112099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/13/2023] [Accepted: 11/13/2023] [Indexed: 11/26/2023] Open
Abstract
Glycosyltransferase family 1 (GT1) is a large group of proteins that play critical roles in secondary metabolite biosynthesis in plants. However, the GT1 family is not well studied in maize. In this study, 107 GT1 unigenes were identified in the maize reference genome and classified into 16 groups according to their phylogenetic relationship. GT1s are unevenly distributed across all ten maize chromosomes, occurring as gene clusters in some chromosomes. Collinearity analysis revealed that gene duplication events, whole-genome or segmental duplication, and tandem duplication occurred at a similar frequency, indicating that both types of gene duplication play notable roles in the expansion of the GT1 gene family. Expression analysis showed GT1s expressing in all tissues with specific expression patterns of each GT1, suggesting that they might participate in multiple biological processes during the whole growth and development stages. Furthermore, 16 GT1s were identified to have similar expression patterns to those of anthocyanidin synthase (ANS), the critical enzyme in anthocyanin biosynthesis. Molecular docking was carried out to examine the affinity of GT1s with substrates in anthocyanin biosynthesis. This study provides valuable information on the GT1s of maize and will promote the development of research on their biological functions in the biosynthesis of other secondary metabolites.
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Affiliation(s)
- Huangai Li
- Research Institute of Biology and Agriculture, Shunde Innovation School, University of Science and Technology Beijing, Beijing 100083, China; (H.L.); (Y.L.); (X.W.)
| | - Yiping Li
- Research Institute of Biology and Agriculture, Shunde Innovation School, University of Science and Technology Beijing, Beijing 100083, China; (H.L.); (Y.L.); (X.W.)
| | - Xiaofang Wang
- Research Institute of Biology and Agriculture, Shunde Innovation School, University of Science and Technology Beijing, Beijing 100083, China; (H.L.); (Y.L.); (X.W.)
| | - Ziwei Jiao
- Industry Research Institute of Biotechnology Breeding, Yili Normal University, Yining 835000, China; (Z.J.); (W.Z.)
| | - Wei Zhang
- Industry Research Institute of Biotechnology Breeding, Yili Normal University, Yining 835000, China; (Z.J.); (W.Z.)
| | - Yan Long
- Research Institute of Biology and Agriculture, Shunde Innovation School, University of Science and Technology Beijing, Beijing 100083, China; (H.L.); (Y.L.); (X.W.)
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing 100192, China
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3
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Zhang L, Yu Y, Zhang M, Rong K, Wu Y, Zhang M, Hu H. Genome-wide identification of xylan glucuronosyltransferase family in cotton and function characterization of GhGUX5 in regulating Verticillium wilt resistance. Int J Biol Macromol 2023:124795. [PMID: 37207759 DOI: 10.1016/j.ijbiomac.2023.124795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 03/26/2023] [Accepted: 04/27/2023] [Indexed: 05/21/2023]
Abstract
Xylan glucuronosyltransferase (GUX) is widely involved in a variety of physiological processes in plants, including plant development, growth and the defense response to pathogens. However, the function of GUX regulators in Verticillium dahliae (V. dahliae) infection has not been considered previously in cotton. Overall, 119 GUX genes were identified from multiple species and were phylogenetically categorized into seven classes. Duplication event analysis indicated that GUXs in Gossypium hirsutum primarily originated from segmental duplication. GhGUXs promoter analysis indicated cis-regulatory elements capable of reacting to several different stresses. RNA-Seq data and qRT-PCR analysis both indicated that most GhGUXs were associated with V. dahliae infection. Gene interaction network analysis showed that GhGUX5 interacted with 11 proteins, and the relative expression of these 11 proteins changed significantly following V. dahliae infection. In addition, silencing and overexpression of GhGUX5 results to enhance and reduce plant's susceptibility to V. dahliae. Further study showed that TRV: GhGUX5 silenced cotton plants exhibited a decrease in the degree of lignification, total lignin content, gene expression levels involved in lignin biosynthesis, and enzyme activity compared with TRV: 00. The above results indicate that GhGUX5 enhances Verticillium wilt resistance through the lignin biosynthesis pathway.
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Affiliation(s)
- Lei Zhang
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Yongang Yu
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Meng Zhang
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Kaikuo Rong
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Yanxia Wu
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Mingxia Zhang
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, China.
| | - Haiyan Hu
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang 453003, China.
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Wang H, Feng X, Zhang Y, Wei D, Zhang Y, Jin Q, Cai Y. PbUGT72AJ2-Mediated Glycosylation Plays an Important Role in Lignin Formation and Stone Cell Development in Pears (Pyrus bretschneideri). Int J Mol Sci 2022; 23:ijms23147893. [PMID: 35887241 PMCID: PMC9318811 DOI: 10.3390/ijms23147893] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/08/2022] [Accepted: 07/11/2022] [Indexed: 12/04/2022] Open
Abstract
Glycosylation is necessary for many processes of plant secondary metabolism. It can maintain plant homeostasis and is of great significance to normal plant growth and development. At present, the significance of glycosylation for lignin biosynthesis has been proven in some plants, but it has not yet been reported in pears. We used in situ hybridization, in vitro expression, substrate catalysis, transgenic Arabidopsisthaliana, and transient transformation of pear fruit in our investigation, which was predicated on the identification of a gene PbUGT72AJ2 that may be involved in lignin monolignol glycosylation according to our previous work. These results revealed that PbUGT72AJ2 transcripts were localized to some pulp cell walls, lignin deposition, and stone cell areas of pear fruit. The recombinant PbUGT72AJ2-pGEX4T-1 protein had activity against coniferyl alcohol and sinapyl alcohol, and its catalytic efficiency against coniferyl alcohol was higher than that against sinapyl alcohol. When PbUGT72AJ2 was transferred into Arabidopsisthaliana mutants, it was found that some characteristics of Arabidopsisthalianaugt72e3 mutants were restored. In Arabidopsisthaliana, overexpression of PbUGT72AJ2 enhanced the contents of coniferin and syringin, whereas lignification did not change significantly. Transient transformation of pear fruit showed that when PbUGT72AJ2 in pear fruit was silenced by RNA interference, the content of lignin and stone cells in pear fruit increased, whereas the gene PbUGT72AJ2 was overexpressed in pear fruit, and there was almost no change in the pear fruit compared with the control. Lignin deposition in pear fruit was closely related to stone cell development. In this study, we proved that PbUGT72AJ2 plays an important role in lignin deposition and stone cell development in pear fruit, which provides a molecular biological basis for improving pear fruit quality at the molecular level.
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Affiliation(s)
- Han Wang
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (H.W.); (X.F.); (Y.Z.); (D.W.); (Y.Z.); (Q.J.)
- Anhui Provincial Engineering Technology Research Center for Development & Utilization of Regional Characteristic Plants, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei 230036, China
| | - Xiaofeng Feng
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (H.W.); (X.F.); (Y.Z.); (D.W.); (Y.Z.); (Q.J.)
- Anhui Provincial Engineering Technology Research Center for Development & Utilization of Regional Characteristic Plants, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei 230036, China
| | - Yingjie Zhang
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (H.W.); (X.F.); (Y.Z.); (D.W.); (Y.Z.); (Q.J.)
- Anhui Provincial Engineering Technology Research Center for Development & Utilization of Regional Characteristic Plants, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei 230036, China
| | - Dongyi Wei
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (H.W.); (X.F.); (Y.Z.); (D.W.); (Y.Z.); (Q.J.)
- Anhui Provincial Engineering Technology Research Center for Development & Utilization of Regional Characteristic Plants, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei 230036, China
| | - Yang Zhang
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (H.W.); (X.F.); (Y.Z.); (D.W.); (Y.Z.); (Q.J.)
- Anhui Provincial Engineering Technology Research Center for Development & Utilization of Regional Characteristic Plants, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei 230036, China
| | - Qing Jin
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (H.W.); (X.F.); (Y.Z.); (D.W.); (Y.Z.); (Q.J.)
- Anhui Provincial Engineering Technology Research Center for Development & Utilization of Regional Characteristic Plants, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei 230036, China
| | - Yongping Cai
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (H.W.); (X.F.); (Y.Z.); (D.W.); (Y.Z.); (Q.J.)
- Anhui Provincial Engineering Technology Research Center for Development & Utilization of Regional Characteristic Plants, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei 230036, China
- Correspondence:
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Wang Y, Gui C, Wu J, Gao X, Huang T, Cui F, Liu H, Sethupathy S. Spatio-Temporal Modification of Lignin Biosynthesis in Plants: A Promising Strategy for Lignocellulose Improvement and Lignin Valorization. Front Bioeng Biotechnol 2022; 10:917459. [PMID: 35845403 PMCID: PMC9283729 DOI: 10.3389/fbioe.2022.917459] [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: 04/11/2022] [Accepted: 06/14/2022] [Indexed: 11/13/2022] Open
Abstract
Lignin is essential for plant growth, structural integrity, biotic/abiotic stress resistance, and water transport. Besides, lignin constitutes 10–30% of lignocellulosic biomass and is difficult to utilize for biofuel production. Over the past few decades, extensive research has uncovered numerous metabolic pathways and genes involved in lignin biosynthesis, several of which have been highlighted as the primary targets for genetic manipulation. However, direct manipulation of lignin biosynthesis is often associated with unexpected abnormalities in plant growth and development for unknown causes, thus limiting the usefulness of genetic engineering for biomass production and utilization. Recent advances in understanding the complex regulatory mechanisms of lignin biosynthesis have revealed new avenues for spatial and temporal modification of lignin in lignocellulosic plants that avoid growth abnormalities. This review explores recent work on utilizing specific transcriptional regulators to modify lignin biosynthesis at both tissue and cellular levels, focusing on using specific promoters paired with functional or regulatory genes to precisely control lignin synthesis and achieve biomass production with desired properties. Further advances in designing more appropriate promoters and other regulators will increase our capacity to modulate lignin content and structure in plants, thus setting the stage for high-value utilization of lignin in the future.
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Affiliation(s)
- Yongli Wang
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
- *Correspondence: Yongli Wang, ; Sivasamy Sethupathy,
| | - Cunjin Gui
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Jiangyan Wu
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Xing Gao
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Ting Huang
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Fengjie Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Huan Liu
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Sivasamy Sethupathy
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
- *Correspondence: Yongli Wang, ; Sivasamy Sethupathy,
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UGT72, a Major Glycosyltransferase Family for Flavonoid and Monolignol Homeostasis in Plants. BIOLOGY 2022; 11:biology11030441. [PMID: 35336815 PMCID: PMC8945231 DOI: 10.3390/biology11030441] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/07/2022] [Accepted: 03/11/2022] [Indexed: 11/16/2022]
Abstract
Simple Summary Phenylpropanoids are specialized metabolites playing crucial roles in plant developmental processes and in plant defense towards pathogens. The attachment of sugar moieties to these small hydrophobic molecules renders them more hydrophilic and increases their solubility. The UDP-glycosyltransferase 72 family (UGT72) of plants has been shown to glycosylate mainly two classes of phenylpropanoids, (i) the monolignols that are the building blocks of lignin, the second most abundant polymer after cellulose, and (ii) the flavonoids, which play determinant roles in plant interactions with other organisms and in response to stress. The purpose of this review is to bring an overview of the current knowledge of the UGT72 family and to highlight its role in the homeostasis of these molecules. Potential applications in pharmacology and in wood, paper pulp, and bioethanol production are given within the perspectives. Abstract Plants have developed the capacity to produce a diversified range of specialized metabolites. The glycosylation of those metabolites potentially decreases their toxicity while increasing their stability and their solubility, modifying their transport and their storage. The UGT, forming the largest glycosyltransferase superfamily in plants, combine enzymes that glycosylate mainly hormones and phenylpropanoids by using UDP-sugar as a sugar donor. Particularly, members of the UGT72 family have been shown to glycosylate the monolignols and the flavonoids, thereby being involved in their homeostasis. First, we explore primitive UGTs in algae and liverworts that are related to the angiosperm UGT72 family and their role in flavonoid homeostasis. Second, we describe the role of several UGT72s glycosylating monolignols, some of which have been associated with lignification. In addition, the role of other UGT72 members that glycosylate flavonoids and are involved in the development and/or stress response is depicted. Finally, the importance to explore the subcellular localization of UGTs to study their roles in planta is discussed.
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Genomic-Wide Identification and Characterization of the Uridine Diphosphate Glycosyltransferase Family in Eucommia ulmoides Oliver. PLANTS 2021; 10:plants10091934. [PMID: 34579466 PMCID: PMC8471388 DOI: 10.3390/plants10091934] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/10/2021] [Accepted: 09/13/2021] [Indexed: 02/06/2023]
Abstract
Eucommia ulmoides Oliver is a woody plant with great economic and medicinal value. Its dried bark has a long history of use as a traditional medicinal material in East Asia, which led to many glycosides, such as aucubin, geniposide, hyperoside, astragalin, and pinoresinol diglucoside, being recognized as pharmacologically active ingredients. Uridine diphosphate glycosyltransferases (UGTs) catalyze a glycosyl-transferring reaction from the donor molecule uridine-5'-diphosphate-glucose (UDPG) to the substrate, which plays an important role in many biological processes, such as plant growth and development, secondary metabolism, and environmental adaptation. In order to explore the biosynthetic pathways of glycosides in E. ulmoides, 91 putative EuUGT genes were identified throughout the complete genome of E. ulmoides through function annotation and an UDPGT domain search. Phylogenetic analysis categorized them into 14 groups. We also performed GO annotations on all the EuUGTs to gain insights into their functions in E. ulmoides. In addition, transcriptomic analysis indicated that most EuUGTs showed different expression patterns across diverse organs and various growing seasons. By protein-protein interaction predication, a biosynthetic routine of flavonoids and their glycosides was also proposed. Undoubtedly, these results will help in future research into the biosynthetic pathways of glycoside compounds in E. ulmoides.
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Kurze E, Wüst M, Liao J, McGraphery K, Hoffmann T, Song C, Schwab W. Structure-function relationship of terpenoid glycosyltransferases from plants. Nat Prod Rep 2021; 39:389-409. [PMID: 34486004 DOI: 10.1039/d1np00038a] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Covering: up to 2021Terpenoids are physiologically active substances that are of great importance to humans. Their physicochemical properties are modified by glycosylation, in terms of polarity, volatility, solubility and reactivity, and their bioactivities are altered accordingly. Significant scientific progress has been made in the functional study of glycosylated terpenes and numerous plant enzymes involved in regio- and enantioselective glycosylation have been characterized, a reaction that remains chemically challenging. Crucial clues to the mechanism of terpenoid glycosylation were recently provided by the first crystal structures of a diterpene glycosyltransferase UGT76G1. Here, we review biochemically characterized terpenoid glycosyltransferases, compare their functions and primary structures, discuss their acceptor and donor substrate tolerance and product specificity, and elaborate features of the 3D structures of the first terpenoid glycosyltransferases from plants.
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Affiliation(s)
- Elisabeth Kurze
- Biotechnology of Natural Products, TUM School of Life Sciences, Technische Universität München, Liesel-Beckmann-Str. 1, 85354 Freising, Germany.
| | - Matthias Wüst
- Chair of Food Chemistry, Institute of Nutritional and Food Sciences, University of Bonn, Endenicher Allee 19C, 53115 Bonn, Germany.
| | - Jieren Liao
- Biotechnology of Natural Products, TUM School of Life Sciences, Technische Universität München, Liesel-Beckmann-Str. 1, 85354 Freising, Germany.
| | - Kate McGraphery
- Biotechnology of Natural Products, TUM School of Life Sciences, Technische Universität München, Liesel-Beckmann-Str. 1, 85354 Freising, Germany.
| | - Thomas Hoffmann
- Biotechnology of Natural Products, TUM School of Life Sciences, Technische Universität München, Liesel-Beckmann-Str. 1, 85354 Freising, Germany.
| | - Chuankui Song
- State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University Hefei, Anhui 230036, People's Republic of China.
| | - Wilfried Schwab
- Biotechnology of Natural Products, TUM School of Life Sciences, Technische Universität München, Liesel-Beckmann-Str. 1, 85354 Freising, Germany. .,State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University Hefei, Anhui 230036, People's Republic of China.
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Ma D, Liu B, Ge L, Weng Y, Cao X, Liu F, Mao P, Ma X. Identification and characterization of regulatory pathways involved in early flowering in the new leaves of alfalfa (Medicago sativa L.) by transcriptome analysis. BMC PLANT BIOLOGY 2021; 21:8. [PMID: 33407121 PMCID: PMC7788926 DOI: 10.1186/s12870-020-02775-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 12/02/2020] [Indexed: 05/03/2023]
Abstract
BACKGROUND Alfalfa (Medicago sativa L.) is a perennial legume extensively planted throughout the world as a high nutritive value livestock forage. Flowering time is an important agronomic trait that contributes to the production of alfalfa hay and seeds. However, the underlying molecular mechanisms of flowering time regulation in alfalfa are not well understood. RESULTS In this study, an early-flowering alfalfa genotype 80 and a late-flowering alfalfa genotype 195 were characterized for the flowering phenotype. Our analysis revealed that the lower jasmonate (JA) content in new leaves and the downregulation of JA biosynthetic genes (i.e. lipoxygenase, the 12-oxophytodienoate reductase-like protein, and salicylic acid carboxyl methyltransferase) may play essential roles in the early-flowering phenotype of genotype 80. Further research indicated that genes encode pathogenesis-related proteins [e.g. leucine rich repeat (LRR) family proteins, receptor-like proteins, and toll-interleukin-like receptor (TIR)-nucleotide-binding site (NBS)-LRR class proteins] and members of the signaling receptor kinase family [LRR proteins, kinases domain of unknown function 26 (DUF26) and wheat leucine-rich repeat receptor-like kinase10 (LRK10)-like kinases] are related to early flowering in alfalfa. Additionally, those involved in secondary metabolism (2-oxoglutarate/Fe (II)-dependent dioxygenases and UDP-glycosyltransferase) and the proteasome degradation pathway [really interesting new gene (RING)/U-box superfamily proteins and F-box family proteins] are also related to early flowering in alfalfa. CONCLUSIONS Integrated phenotypical, physiological, and transcriptomic analyses demonstrate that hormone biosynthesis and signaling pathways, pathogenesis-related genes, signaling receptor kinase family genes, secondary metabolism genes, and proteasome degradation pathway genes are responsible for the early flowering phenotype in alfalfa. This will provide new insights into future studies of flowering time in alfalfa and inform genetic improvement strategies for optimizing this important trait.
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Affiliation(s)
- Dongmei Ma
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China/ Ministry of Education Key Laboratory for Restoration and Reconstruction of Degraded Ecosystems in Northwest China, Ningxia University, Yinchuan, 750021 China
| | - Bei Liu
- College of Grassland Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Lingqiao Ge
- College of Grassland Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Yinyin Weng
- College of Grassland Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Xiaohui Cao
- College of Grassland Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Fang Liu
- National Animal Husbandry Service, Maizidian Street, North Nongzhan Road, Chaoyang District, Beijing, 100125 China
| | - Peisheng Mao
- College of Grassland Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Xiqing Ma
- College of Grassland Science and Technology, China Agricultural University, Beijing, 100193 China
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10
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Jing T, Zhang N, Gao T, Wu Y, Zhao M, Jin J, Du W, Schwab W, Song C. UGT85A53 promotes flowering via mediating abscisic acid glucosylation and FLC transcription in Camellia sinensis. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:7018-7029. [PMID: 32777072 DOI: 10.1093/jxb/eraa373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 07/31/2020] [Indexed: 05/02/2023]
Abstract
Uridine diphosphate (UDP)-dependent glycosyltransferases catalyse the glycosylation of small molecules and play important roles in maintaining cell homeostasis and regulating plant development. Glycosyltransferases are widely distributed, but their detailed roles in regulating plant growth and development are largely unknown. In this study, we identified a UDP-glycosyltransferase, UGT85A53, from Camellia sinensis, the expression of which was strongly induced by various abiotic stress factors and its protein product was distributed in both the cytoplasm and nucleus. Ectopic overexpression of CsUGT85A53 in Arabidopsis resulted in an early-flowering phenotype under both long- and short-day conditions. The transcript accumulation of the flowering repressor genes FLC and ABI5, an activator of FLC in ABA-regulated flowering signaling, were both significantly decreased in transgenic Arabidopsis compared with wild-type plants. The decreased expression level of FLC might be associated with an increased level of DNA methylation that was observed in CsUGT85A53-overexpressing (OE) plants. Biochemical analyses showed that CsUGT85A53 could glucosylate ABA to form inactive ABA-glycoside in vitro and in planta. Overexpression of CsUGT85A53 in Arabidopsis resulted in a decreased concentration of free ABA and increased concentration of ABA-glucoside. The early-flowering phenotype in the CsUGT85A53-OE transgenic lines was restored by ABA application. Furthermore, CsUGT85A53-OE plants displayed an ABA-insensitive phenotype with higher germination rates compared with controls in the presence of low concentrations of exogenous ABA. Our findings are the first to identify a UGT in tea plants that catalyses ABA glucosylation and enhance flowering transition as a positive regulator.
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Affiliation(s)
- Tingting Jing
- State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui, P. R. China
| | - Na Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui, P. R. China
| | - Ting Gao
- State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui, P. R. China
| | - Yi Wu
- State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui, P. R. China
| | - Mingyue Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui, P. R. China
| | - Jieyang Jin
- State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui, P. R. China
| | - Wenkai Du
- State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui, P. R. China
| | - Wilfried Schwab
- State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui, P. R. China
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str., Freising, Germany
| | - Chuankui Song
- State Key Laboratory of Tea Plant Biology and Utilization, International Joint Laboratory on Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui, P. R. China
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11
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Sun G, Putkaradze N, Bohnacker S, Jonczyk R, Fida T, Hoffmann T, Bernhardt R, Härtl K, Schwab W. Six Uridine-Diphosphate Glycosyltransferases Catalyze the Glycosylation of Bioactive C 13-Apocarotenols. PLANT PHYSIOLOGY 2020; 184:1744-1761. [PMID: 33020252 PMCID: PMC7723086 DOI: 10.1104/pp.20.00953] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 09/23/2020] [Indexed: 05/03/2023]
Abstract
C13-apocarotenoids (norisoprenoids) are carotenoid-derived oxidation products that perform important physiological functions in plants. Although their biosynthetic pathways have been extensively studied, their metabolism including glycosylation remains poorly understood. Candidate uridine-diphosphate glycosyltransferase genes (UGTs) were selected based on their high transcript abundance in comparison with other UGTs in vegetative tissues of Nicotiana benthamiana and peppermint (Mentha × piperita), as these tissues are rich sources of apocarotenoid glucosides. Hydroxylated C13-apocarotenol substrates were produced by P450-catalyzed biotransformation and microbial/plant enzyme systems were established for the synthesis of glycosides. Natural substrates were identified by physiological aglycone libraries prepared from isolated plant glycosides. In total, we identified six UGTs that catalyze the glucosylation of C13-apocarotenols, where Glc is bound either to the cyclohexene ring or the butane side chain. MpUGT86C10 is a superior novel enzyme that catalyzes the glucosylation of allelopathic 3-hydroxy-α-damascone, 3-oxo-α-ionol, 3-oxo-7,8-dihydro-α-ionol (Blumenol C), and 3-hydroxy-7,8-dihydro-β-ionol, whereas a germination test demonstrated the higher phytotoxic potential of a norisoprenoid glucoside in comparison to its aglycone. Glycosylation of C13-apocarotenoids has several functions in plants, including increased allelopathic activity of the aglycone, facilitating exudation by roots and allowing symbiosis with arbuscular mycorrhizal fungi. The results enable in-depth analysis of the roles of glycosylated norisoprenoid allelochemicals, the physiological functions of apocarotenoids during arbuscular mycorrhizal colonization, and the associated maintenance of carotenoid homeostasis.
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Affiliation(s)
- Guangxin Sun
- Biotechnology of Natural Products, Technische Universität München, 85354 Freising, Germany
| | - Natalia Putkaradze
- Institut für Biochemie, Universität des Saarlandes, D-66123 Saarbrücken, Germany
| | - Sina Bohnacker
- Biotechnology of Natural Products, Technische Universität München, 85354 Freising, Germany
| | - Rafal Jonczyk
- Biotechnology of Natural Products, Technische Universität München, 85354 Freising, Germany
| | - Tarik Fida
- Biotechnology of Natural Products, Technische Universität München, 85354 Freising, Germany
| | - Thomas Hoffmann
- Biotechnology of Natural Products, Technische Universität München, 85354 Freising, Germany
| | - Rita Bernhardt
- Institut für Biochemie, Universität des Saarlandes, D-66123 Saarbrücken, Germany
| | - Katja Härtl
- Biotechnology of Natural Products, Technische Universität München, 85354 Freising, Germany
| | - Wilfried Schwab
- Biotechnology of Natural Products, Technische Universität München, 85354 Freising, Germany
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12
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Rychel-Bielska S, Plewiński P, Kozak B, Galek R, Ksia̧żkiewicz M. Photoperiod and Vernalization Control of Flowering-Related Genes: A Case Study of the Narrow-Leafed Lupin ( Lupinus angustifolius L.). FRONTIERS IN PLANT SCIENCE 2020; 11:572135. [PMID: 33193508 PMCID: PMC7663182 DOI: 10.3389/fpls.2020.572135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
Narrow-leafed lupin (Lupinus angustifolius L.) is a moderate-yielding legume crop known for its high grain protein content and contribution to soil improvement. It is cultivated under photoperiods ranging from 9 to 17 h, as a spring-sown (in colder locations) or as an autumn-sown crop (in warmer regions). Wild populations require a prolonged cold period, called vernalization, to induce flowering. The key achievement of L. angustifolius domestication was the discovery of two natural mutations (named Ku and Jul) conferring vernalization independence. These mutations are overlapping deletion variants in the promoter of LanFTc1, a homolog of the Arabidopsis thaliana FLOWERING LOCUS T (FT) gene. The third deletion, named here as Pal, was recently found in primitive germplasm. In this study, we genotyped L. angustifolius germplasm that differs in domestication status and geographical origin for LanFTc1 alleles, which we then phenotyped to establish flowering time and vernalization responsiveness. The Ku and Jul lines were vernalization-independent and early flowering, wild (ku) lines were vernalization-dependent and late flowering, whereas the Pal line conferred intermediate phenotype. Three lines representing ku, Pal, and Ku alleles were subjected to gene expression surveys under 8- and 16-h photoperiods. FT homologs (LanFTa1, LanFTa2, LanFTc1, and LanFTc2) and some genes selected by recent expression quantitative trait loci mapping were analyzed. Expression profiles of LanFTc1 and LanAGL8 (AGAMOUS-like 8) matched observed differences in flowering time between genotypes, highlighted by high induction after vernalization in the ku line. Moreover, these genes revealed altered circadian clock control in Pal line under short days. LanFD (FD) and LanCRLK1 (CALCIUM/CALMODULIN-REGULATED RECEPTOR-LIKE KINASE 1) were negatively responsive to vernalization in Ku and Pal lines but positively responsive or variable in ku, whereas LanUGT85A2 (UDP-GLUCOSYL TRANSFERASE 85A2) was significantly suppressed by vernalization in all lines. Such a pattern suggests the opposite regulation of these gene pairs in the vernalization pathway. LanCRLK1 and LanUGT85A2 are homologs of A. thaliana genes involved in the FLOWERING LOCUS C (FLC) vernalization pathway. Lupins, like many other legumes, do not have any FLC homologs. Therefore, candidate genes surveyed in this study, namely LanFTc1, LanAGL8, LanCRLK1, and LanUGT85A2, may constitute anchors for further elucidation of molecular components contributing to vernalization response in legumes.
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Affiliation(s)
- Sandra Rychel-Bielska
- Department of Genetics, Plant Breeding and Seed Production, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Piotr Plewiński
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Bartosz Kozak
- Department of Genetics, Plant Breeding and Seed Production, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - Renata Galek
- Department of Genetics, Plant Breeding and Seed Production, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - Michał Ksia̧żkiewicz
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
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13
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Baldacci-Cresp F, Le Roy J, Huss B, Lion C, Créach A, Spriet C, Duponchel L, Biot C, Baucher M, Hawkins S, Neutelings G. UDP-GLYCOSYLTRANSFERASE 72E3 Plays a Role in Lignification of Secondary Cell Walls in Arabidopsis. Int J Mol Sci 2020; 21:ijms21176094. [PMID: 32847109 PMCID: PMC7503680 DOI: 10.3390/ijms21176094] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/20/2020] [Accepted: 08/21/2020] [Indexed: 12/24/2022] Open
Abstract
Lignin is present in plant secondary cell walls and is among the most abundant biological polymers on Earth. In this work we investigated the potential role of the UGT72E gene family in regulating lignification in Arabidopsis. Chemical determination of floral stem lignin contents in ugt72e1, ugt72e2, and ugt72e3 mutants revealed no significant differences compared to WT plants. In contrast, the use of a novel safranin O ratiometric imaging technique indicated a significant increase in the cell wall lignin content of both interfascicular fibers and xylem from young regions of ugt72e3 mutant floral stems. These results were globally confirmed in interfascicular fibers by Raman microspectroscopy. Subsequent investigation using a bioorthogonal triple labelling strategy suggested that the augmentation in lignification was associated with an increased capacity of mutant cell walls to incorporate H-, G-, and S-monolignol reporters. Expression analysis showed that this increase was associated with an up-regulation of LAC17 and PRX71, which play a key role in lignin polymerization. Altogether, these results suggest that UGT72E3 can influence the kinetics of lignin deposition by regulating monolignol flow to the cell wall as well as the potential of this compartment to incorporate monomers into the growing lignin polymer.
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Affiliation(s)
- Fabien Baldacci-Cresp
- University Lille, CNRS, UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), F-59000 Lille, France; (F.B.-C.); (J.L.R.); (B.H.); (C.L.); (A.C.); (C.S.); (C.B.); (S.H.)
| | - Julien Le Roy
- University Lille, CNRS, UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), F-59000 Lille, France; (F.B.-C.); (J.L.R.); (B.H.); (C.L.); (A.C.); (C.S.); (C.B.); (S.H.)
- College La Cité, Technology Access Center in Bio-Innovation (TAC-B), Ottawa, ON K1K4R3, Canada
| | - Brigitte Huss
- University Lille, CNRS, UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), F-59000 Lille, France; (F.B.-C.); (J.L.R.); (B.H.); (C.L.); (A.C.); (C.S.); (C.B.); (S.H.)
| | - Cédric Lion
- University Lille, CNRS, UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), F-59000 Lille, France; (F.B.-C.); (J.L.R.); (B.H.); (C.L.); (A.C.); (C.S.); (C.B.); (S.H.)
| | - Anne Créach
- University Lille, CNRS, UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), F-59000 Lille, France; (F.B.-C.); (J.L.R.); (B.H.); (C.L.); (A.C.); (C.S.); (C.B.); (S.H.)
| | - Corentin Spriet
- University Lille, CNRS, UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), F-59000 Lille, France; (F.B.-C.); (J.L.R.); (B.H.); (C.L.); (A.C.); (C.S.); (C.B.); (S.H.)
- University Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US 41, UMS 2014, PLBS, F-59000 Lille, France
| | - Ludovic Duponchel
- University Lille, CNRS, UMR 8516, LASIR, Infrared and Raman Spectroscopy Laboratory, F-59000 Lille, France;
| | - Christophe Biot
- University Lille, CNRS, UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), F-59000 Lille, France; (F.B.-C.); (J.L.R.); (B.H.); (C.L.); (A.C.); (C.S.); (C.B.); (S.H.)
| | - Marie Baucher
- Laboratoire de Biotechnologie Végétale (LBV), Université libre de Bruxelles, B-6041 Gosselies, Belgium;
| | - Simon Hawkins
- University Lille, CNRS, UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), F-59000 Lille, France; (F.B.-C.); (J.L.R.); (B.H.); (C.L.); (A.C.); (C.S.); (C.B.); (S.H.)
| | - Godfrey Neutelings
- University Lille, CNRS, UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), F-59000 Lille, France; (F.B.-C.); (J.L.R.); (B.H.); (C.L.); (A.C.); (C.S.); (C.B.); (S.H.)
- Correspondence:
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14
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Characterization of the UDP-glycosyltransferase UGT72 Family in Poplar and Identification of Genes Involved in the Glycosylation of Monolignols. Int J Mol Sci 2020; 21:ijms21145018. [PMID: 32708651 PMCID: PMC7404001 DOI: 10.3390/ijms21145018] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 12/28/2022] Open
Abstract
Monolignols are the building blocks for lignin polymerization in the apoplastic domain. Monolignol biosynthesis, transport, storage, glycosylation, and deglycosylation are the main biological processes partaking in their homeostasis. In Arabidopsis thaliana, members of the uridine diphosphate-dependent glucosyltransferases UGT72E and UGT72B subfamilies have been demonstrated to glycosylate monolignols. Here, the poplar UGT72 family, which is clustered into four groups, was characterized: Group 1 UGT72AZ1 and UGT72AZ2, homologs of Arabidopsis UGT72E1-3, as well as group 4 UGT72B37 and UGT72B39, homologs of Arabidopsis UGT72B1-3, glycosylate monolignols. In addition, promoter-GUS analyses indicated that poplar UGT72 members are expressed within vascular tissues. At the subcellular level, poplar UGT72s belonging to group 1 and group 4 were found to be associated with the nucleus and the endoplasmic reticulum. However, UGT72A2, belonging to group 2, was localized in bodies associated with chloroplasts, as well as possibly in chloroplasts. These results show a partial conservation of substrate recognition between Arabidopsis and poplar homologs, as well as divergent functions between different groups of the UGT72 family, for which the substrates remain unknown.
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15
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Rychel-Bielska S, Plewiński P, Kozak B, Galek R, Ksia Żkiewicz M. Photoperiod and Vernalization Control of Flowering-Related Genes: A Case Study of the Narrow-Leafed Lupin ( Lupinus angustifolius L.). FRONTIERS IN PLANT SCIENCE 2020; 11:572135. [PMID: 33193508 DOI: 10.3389/fpls.2020.572135/bibtex] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 09/24/2020] [Indexed: 05/18/2023]
Abstract
Narrow-leafed lupin (Lupinus angustifolius L.) is a moderate-yielding legume crop known for its high grain protein content and contribution to soil improvement. It is cultivated under photoperiods ranging from 9 to 17 h, as a spring-sown (in colder locations) or as an autumn-sown crop (in warmer regions). Wild populations require a prolonged cold period, called vernalization, to induce flowering. The key achievement of L. angustifolius domestication was the discovery of two natural mutations (named Ku and Jul) conferring vernalization independence. These mutations are overlapping deletion variants in the promoter of LanFTc1, a homolog of the Arabidopsis thaliana FLOWERING LOCUS T (FT) gene. The third deletion, named here as Pal, was recently found in primitive germplasm. In this study, we genotyped L. angustifolius germplasm that differs in domestication status and geographical origin for LanFTc1 alleles, which we then phenotyped to establish flowering time and vernalization responsiveness. The Ku and Jul lines were vernalization-independent and early flowering, wild (ku) lines were vernalization-dependent and late flowering, whereas the Pal line conferred intermediate phenotype. Three lines representing ku, Pal, and Ku alleles were subjected to gene expression surveys under 8- and 16-h photoperiods. FT homologs (LanFTa1, LanFTa2, LanFTc1, and LanFTc2) and some genes selected by recent expression quantitative trait loci mapping were analyzed. Expression profiles of LanFTc1 and LanAGL8 (AGAMOUS-like 8) matched observed differences in flowering time between genotypes, highlighted by high induction after vernalization in the ku line. Moreover, these genes revealed altered circadian clock control in Pal line under short days. LanFD (FD) and LanCRLK1 (CALCIUM/CALMODULIN-REGULATED RECEPTOR-LIKE KINASE 1) were negatively responsive to vernalization in Ku and Pal lines but positively responsive or variable in ku, whereas LanUGT85A2 (UDP-GLUCOSYL TRANSFERASE 85A2) was significantly suppressed by vernalization in all lines. Such a pattern suggests the opposite regulation of these gene pairs in the vernalization pathway. LanCRLK1 and LanUGT85A2 are homologs of A. thaliana genes involved in the FLOWERING LOCUS C (FLC) vernalization pathway. Lupins, like many other legumes, do not have any FLC homologs. Therefore, candidate genes surveyed in this study, namely LanFTc1, LanAGL8, LanCRLK1, and LanUGT85A2, may constitute anchors for further elucidation of molecular components contributing to vernalization response in legumes.
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Affiliation(s)
- Sandra Rychel-Bielska
- Department of Genetics, Plant Breeding and Seed Production, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Piotr Plewiński
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Bartosz Kozak
- Department of Genetics, Plant Breeding and Seed Production, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - Renata Galek
- Department of Genetics, Plant Breeding and Seed Production, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - Michał Ksia Żkiewicz
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
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16
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Sun D, Zhang X, Zhang Q, Ji X, Jia Y, Wang H, Niu L, Zhang Y. Comparative transcriptome profiling uncovers a Lilium regale NAC transcription factor, LrNAC35, contributing to defence response against cucumber mosaic virus and tobacco mosaic virus. MOLECULAR PLANT PATHOLOGY 2019; 20:1662-1681. [PMID: 31560826 PMCID: PMC6859495 DOI: 10.1111/mpp.12868] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Cucumber mosaic virus (CMV) is a highly prevalent viral pathogen causing substantial damage to the bulb and cut-flower production of Lilium spp. Here, we performed an Illumina RNA sequencing (RNA-Seq) study on the leaf tissues of a virus-resistant species Lilium regale inoculated with mock control and CMV. A total of 1346 differentially expressed genes (DEGs) were identified in the leaves of L. regale upon CMV inoculation, which contained 34 up-regulated and 40 down-regulated DEGs that encode putative transcription factors (TFs). One up-regulated TF, LrNAC35, belonging to the NAM/ATAF/CUC (NAC) superfamily, was selected for further functional characterization. Aside from CMV, lily mottle virus and lily symptomless virus infections provoked a striking increase in LrNAC35 transcripts in both resistant and susceptible Lilium species. The treatments with low temperature and several stress-related hormones activated LrNAC35 expression, contrary to its reduced expression under salt stress. Ectopic overexpression of LrNAC35 in petunia (Petunia hybrida) resulted in reduced susceptibility to CMV and Tobacco mosaic virus infections, and enhanced accumulation of lignin in the cell walls. Four lignin biosynthetic genes, including PhC4H, Ph4CL, PhHCT and PhCCR, were found to be up-regulated in CMV-infected petunia lines overexpressing LrNAC35. In vivo promoter-binding tests showed that LrNAC35 specifically regulated the expression of Ph4CL. Taken together, our results suggest a positive role of transcriptome-derived LrNAC35 in transcriptional modulation of host defence against viral attack.
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Affiliation(s)
- Daoyang Sun
- College of Landscape Architecture and ArtsNorthwest A&F UniversityYangling712100China
| | - Xinguo Zhang
- College of Landscape Architecture and ArtsNorthwest A&F UniversityYangling712100China
| | - Qingyu Zhang
- College of Landscape Architecture and ArtsNorthwest A&F UniversityYangling712100China
| | - Xiaotong Ji
- College of Landscape Architecture and ArtsNorthwest A&F UniversityYangling712100China
| | - Yong Jia
- State Agricultural Biotechnology Centre, School of Veterinary and Life SciencesMurdoch UniversityPerth6150Australia
| | - Hong Wang
- Institute of Pomology/Jiangsu Key Laboratory for Horticultural Crop Genetic ImprovementJiangsu Academy of Agricultural SciencesNanjing210014China
| | - Lixin Niu
- College of Landscape Architecture and ArtsNorthwest A&F UniversityYangling712100China
| | - Yanlong Zhang
- College of Landscape Architecture and ArtsNorthwest A&F UniversityYangling712100China
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17
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Sun G, Strebl M, Merz M, Blamberg R, Huang FC, McGraphery K, Hoffmann T, Schwab W. Glucosylation of the phytoalexin N-feruloyl tyramine modulates the levels of pathogen-responsive metabolites in Nicotiana benthamiana. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 100:20-37. [PMID: 31124249 DOI: 10.1111/tpj.14420] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/07/2019] [Accepted: 05/14/2019] [Indexed: 05/03/2023]
Abstract
Enzyme promiscuity, a common property of many uridine diphosphate sugar-dependent glycosyltransferases (UGTs) that convert small molecules, significantly hinders the identification of natural substrates and therefore the characterization of the physiological role of enzymes. In this paper we present a simple but effective strategy to identify endogenous substrates of plant UGTs using LC-MS-guided targeted glycoside analysis of transgenic plants. We successfully identified natural substrates of two promiscuous Nicotiana benthamiana UGTs (NbUGT73A24 and NbUGT73A25), orthologues of pathogen-induced tobacco UGT (TOGT) from Nicotiana tabacum, which is involved in the hypersensitive reaction. While in N. tabacum, TOGT glucosylated scopoletin after treatment with salicylate, fungal elicitors and the tobacco mosaic virus, NbUGT73A24 and NbUGT73A25 produced glucosides of phytoalexin N-feruloyl tyramine, which may strengthen cell walls to prevent the intrusion of pathogens, and flavonols after agroinfiltration of the corresponding genes in N. benthamiana. Enzymatic glucosylation of fractions of a physiological aglycone library confirmed the biological substrates of UGTs. In addition, overexpression of both genes in N. benthamiana produced clear lesions on the leaves and led to a significantly reduced content of pathogen-induced plant metabolites such as phenylalanine and tryptophan. Our results revealed some additional biological functions of TOGT enzymes and indicated a multifunctional role of UGTs in plant resistance.
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Affiliation(s)
- Guangxin Sun
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, 85354, Freising, Germany
| | - Michael Strebl
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, 85354, Freising, Germany
| | - Maximilian Merz
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, 85354, Freising, Germany
| | - Robert Blamberg
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, 85354, Freising, Germany
| | - Fong-Chin Huang
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, 85354, Freising, Germany
| | - Kate McGraphery
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, 85354, Freising, Germany
| | - Thomas Hoffmann
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, 85354, Freising, Germany
| | - Wilfried Schwab
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, 85354, Freising, Germany
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18
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Cheng X, Muhammad A, Li G, Zhang J, Cheng J, Qiu J, Jiang T, Jin Q, Cai Y, Lin Y. Family-1 UDP glycosyltransferases in pear (Pyrus bretschneideri): Molecular identification, phylogenomic characterization and expression profiling during stone cell formation. Mol Biol Rep 2019; 46:2153-2175. [PMID: 30734172 DOI: 10.1007/s11033-019-04669-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 01/31/2019] [Indexed: 02/07/2023]
Abstract
Stone cells are a characteristic trait of pear fruits, and excessive stone cell formation has a significant negative impact on the texture and flavour of the pulp. Lignin is one of the main components of stone cells. Family-1 uridine diphosphate-glycosyltransferases (UGTs) are responsible for the glycosylation modification of monolignols. However, information remains limited regarding the relationship between UGTs and stone cell formation. To address this problem, we identified 139 UGTs from the pear genome, which were distributed in 15 phylogenetic groups (A-M, O, and P). We also performed a collinearity analysis of UGTs among four Rosaceae plants (pear, peach, mei, and strawberry). Phylogenetic analysis suggested that 13 PbUGTs might be related to the glycosylation of monolignols. Analysis of expression patterns demonstrated that most putative monolignol glycosylation-related PbUGTs not only showed high expression levels in flowers and buds but were also induced by exogenous ABA, SA, and MeJA. In addition, the transcript level of Pbr005014.1 (named PbUGT72AJ2) was consistent with the changing trend of lignin content in pear fruit, and the transcript level was also higher in 'Dangshan Su' pear with higher lignin and stone cell contents. Subcellular localization results showed that PbUGT72AJ2 was located mainly in the cytomembrane and cytoplasm. Based on our study, PbUGT72AJ2 is considered to be a monolignol glycosylation-related UGT. Our results provide an important source for the identification of UGTs and a foundation for the future understanding and manipulation of lignin metabolism and stone cell formation in pear fruit.
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Affiliation(s)
- Xi Cheng
- School of Life Science, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei, 230036, China
| | - Abdullah Muhammad
- School of Life Science, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei, 230036, China
| | - Guohui Li
- School of Life Science, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei, 230036, China
| | - Jingyun Zhang
- School of Life Science, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei, 230036, China
- Horticultural Institute, Anhui Academy of Agricultural Sciences, Hefei, 230031, Anhui, China
| | - Jun Cheng
- School of Life Science, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei, 230036, China
| | - Jingxiang Qiu
- School of Life Science, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei, 230036, China
| | - Taoshan Jiang
- School of Life Science, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei, 230036, China
| | - Qing Jin
- School of Life Science, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei, 230036, China
| | - Yongping Cai
- School of Life Science, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei, 230036, China.
| | - Yi Lin
- School of Life Science, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei, 230036, China.
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Zhao X, Dai X, Gao L, Guo L, Zhuang J, Liu Y, Ma X, Wang R, Xia T, Wang Y. Functional Analysis of an Uridine Diphosphate Glycosyltransferase Involved in the Biosynthesis of Polyphenolic Glucoside in Tea Plants (Camellia sinensis). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:10993-11001. [PMID: 29161813 DOI: 10.1021/acs.jafc.7b04969] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Polyphenols are one of the largest groups of compounds that confer benefits to the health of plants and humans. Flavonol glycosides are a major ingredient of polyphenols in Camellia sinensis. Flavonol-3-O-glycosides are characteristic astringent taste compounds in tea infusion. A polyphenolic glycosyltransferase (CsUGT72AM1) belonging to cluster IIIb was isolated from the tea plant. The full-length cDNA of CsUGT72AM1 is 1416 bp. It encodes 472 amino acids with a calculated molecular mass of 50.92 kDa and an isoelectric point of 5.21. The recombinant CsUGT72AM1 protein was expressed in Escherichia coli and exhibited catalytic activity toward multiple flavonoids and coniferyl aldehyde. The enzyme assay indicated that rCsUGT72AM1 could perform glycosidation of flavonols or coniferyl aldehyde in vitro to form 3-O-glucoside or 4-O-glucoside, respectively. Interestingly, this enzyme also had activities and performed multisite glycosidation toward flavanones. The consistent products were confirmed to be naringenin-7-O-glucoside and -4'-O-glucoside by the nuclear magnetism assay. In addition, in the enzyme assay with cyanidin as the substrate, the results suggested that the glycosylated activity of CsUGT72AM1 was remarkably inhibited by a high concentration of anthocyanins. The above results indicate that CsUGT72AM1 may be involved in the metabolism of flavonol, flavanone, anthocyanin, and lignin.
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Affiliation(s)
- Xuecheng Zhao
- School of Life Science and ‡State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 West Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Xinlong Dai
- School of Life Science and ‡State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 West Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Liping Gao
- School of Life Science and ‡State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 West Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Lina Guo
- School of Life Science and ‡State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 West Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Juhua Zhuang
- School of Life Science and ‡State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 West Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Yajun Liu
- School of Life Science and ‡State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 West Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Xiubing Ma
- School of Life Science and ‡State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 West Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Rui Wang
- School of Life Science and ‡State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 West Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Tao Xia
- School of Life Science and ‡State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 West Changjiang Road, Hefei, Anhui 230036, People's Republic of China
| | - Yunsheng Wang
- School of Life Science and ‡State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 West Changjiang Road, Hefei, Anhui 230036, People's Republic of China
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Nja RB, Merceron B, Faucher M, Fleurat-Lessard P, Béré E. NaCl - Changes stem morphology, anatomy and phloem structure in Lucerne (Medicago sativa cv. Gabès): Comparison of upper and lower internodes. Micron 2017; 105:70-81. [PMID: 29190502 DOI: 10.1016/j.micron.2017.10.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/17/2017] [Accepted: 10/17/2017] [Indexed: 12/19/2022]
Abstract
In M. sativa cv. Gabès plants treated with 150mM NaCl, the height of the stem is decreased and the internode number, length and diameter are reduced. This depressive effect on growth, but also on photosynthetic activity and water balance, is accompanied by structural changes. In the upper internodes, NaCl treatment increases cambium development, so that the vascular ring is initiated earlier than in controls. In the lower internodes, the number of lignified phloem fibers is increased by NaCl, and their wall thickness is augmented, compared to controls; in the phloem complex, the nacreous layer is enlarged, the number of internal wall ingrowths is increased, but companion cells are damaged. In the treated lower internodes, few vessels occur in the secondary xylem, which is by contrast rich in lignified fibers and in wide vessels grouped in the metaxylem area; protoxylem parenchyma and adjacent pith are also lignified. In addition, in treated lower internodes, starch grains are less abundant than in controls, and this variation might be related to the decrease of photosynthesis. When taken together, qualitative and quantitative results indicate that the saline stress has a marked morpho-anatomical impact on the M. sativa Gabès stem. In particular, variations of secondary derivative distribution, increased wall thickening, lignification of phloem and xylem fibers and damage in the phloem complex are NaCl-induced responses, and are more expressed in the lower than in the upper internodes. The reinforcement of the stem lignified vasculature is thus a positive response to stress, but it has a negative impact on the quality of the forage.
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Affiliation(s)
- Riheb Ben Nja
- Université de Carthage, Faculté des Sciences de Bizerte, Tunisie et Université de Limoges, Faculté des Sciences et techniques, 87100 Limoges Cedex, France.
| | - Bruno Merceron
- Université de Poitiers, Image UP, Service de Microscopie Electronique et Photonique, Pôle Biologie Santé, 1 rue Georges Bonnet, TSA 51106, Poitiers Cedex 9, France.
| | - Mireille Faucher
- Université de Poitiers, Campus Sciences, Laboratoire EBI, UMR CNRS 7267, Equipe SEVE, Bâtiment B31, 3, Rue Jacques Fort, TSA 51106, 86022, Poitiers Cedex 9, France.
| | - Pierrette Fleurat-Lessard
- Université de Poitiers, Campus Sciences, Laboratoire EBI, UMR CNRS 7267, Equipe SEVE, Bâtiment B31, 3, Rue Jacques Fort, TSA 51106, 86022, Poitiers Cedex 9, France.
| | - Emile Béré
- Université de Poitiers, Campus Sciences, Image UP, Service de Microscopie Electronique et Photonique, Pôle Biologie Santé, Bâtiment B36 BP 633, 1, Rue Georges Bonnet, TSA 51106, 86022 Poitiers Cedex 9, France.
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Le Roy J, Huss B, Creach A, Hawkins S, Neutelings G. Glycosylation Is a Major Regulator of Phenylpropanoid Availability and Biological Activity in Plants. FRONTIERS IN PLANT SCIENCE 2016; 7:735. [PMID: 27303427 PMCID: PMC4880792 DOI: 10.3389/fpls.2016.00735] [Citation(s) in RCA: 203] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 05/12/2016] [Indexed: 05/18/2023]
Abstract
The phenylpropanoid pathway in plants is responsible for the biosynthesis of a huge amount of secondary metabolites derived from phenylalanine and tyrosine. Both flavonoids and lignins are synthesized at the end of this very diverse metabolic pathway, as well as many intermediate molecules whose precise biological functions remain largely unknown. The diversity of these molecules can be further increased under the action of UDP-glycosyltransferases (UGTs) leading to the production of glycosylated hydroxycinnamates and related aldehydes, alcohols and esters. Glycosylation can change phenylpropanoid solubility, stability and toxic potential, as well as influencing compartmentalization and biological activity. (De)-glycosylation therefore represents an extremely important regulation point in phenylpropanoid homeostasis. In this article we review recent knowledge on the enzymes involved in regulating phenylpropanoid glycosylation status and availability in different subcellular compartments. We also examine the potential link between monolignol glycosylation and lignification by exploring co-expression of lignin biosynthesis genes and phenolic (de)glycosylation genes. Of the different biological roles linked with their particular chemical properties, phenylpropanoids are often correlated with the plant's stress management strategies that are also regulated by glycosylation. UGTs can for instance influence the resistance of plants during infection by microorganisms and be involved in the mechanisms related to environmental changes. The impact of flavonoid glycosylation on the color of flowers, leaves, seeds and fruits will also be discussed. Altogether this paper underlies the fact that glycosylation and deglycosylation are powerful mechanisms allowing plants to regulate phenylpropanoid localisation, availability and biological activity.
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Li YJ, Wang B, Dong RR, Hou BK. AtUGT76C2, an Arabidopsis cytokinin glycosyltransferase is involved in drought stress adaptation. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2015; 236:157-67. [PMID: 26025529 DOI: 10.1016/j.plantsci.2015.04.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/27/2015] [Accepted: 04/01/2015] [Indexed: 05/20/2023]
Abstract
The Arabidopsis uridine diphosphate (UDP)-glycosyltransferase 76C2 (UGT76C2), a member of family 1 UGTs, is described as a cytokinin glycosyltransferase. In this study, we demonstrate a novel role of UGT76C2 in response to water deficit. QRT-PCR assay identified that the expression of this gene was downregulated by drought, osmotic stress and abscisic acid (ABA). Compared with wild type (WT) plants, transgenic lines ectopically expressing UGT76C2 exhibited reduced tolerance to ABA and osmotic stress during postgermination growth, while enhanced adaptation to drought stress at mature stage. Consistently, the ugt76c2 mutant plants showed opposite responses to these conditions. To explore the possible mechanisms of UGT76C2 contributing to drought stress adaptation, six stress inducible genes including DREB2A, RD22, RD29B, LEA, COR47 and KIN1 were detected, which showed significant upregulation in UGT76C2 overexpression plants under drought stress. Besides, five cytokinin marker genes AHK2, AHK3, AHK4, ARR1 and ARR2 were also evaluated, which showed less induced in UGT76C2 overexpression plants in response to drought stress. Our results reveal that UGT76C2, as a cytokinin glycosyltransferase, is involved in the plant response to drought stress and might represent novel cues in abiotic stress adaptation.
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Affiliation(s)
- Yan-jie Li
- The Key Lab of Plant Cell Engineering and Germplasm Innovation, Ministry of Education of China, School of Life Science, Shandong University, Jinan, Shandong 250100, PR China
| | - Bo Wang
- The Key Lab of Plant Cell Engineering and Germplasm Innovation, Ministry of Education of China, School of Life Science, Shandong University, Jinan, Shandong 250100, PR China; Institute of Applied Chemistry and Biological Engineering, Weifang Engineering Vocational College, Weifang, Shandong 262500, PR China
| | - Rui-rui Dong
- The Key Lab of Plant Cell Engineering and Germplasm Innovation, Ministry of Education of China, School of Life Science, Shandong University, Jinan, Shandong 250100, PR China
| | - Bing-kai Hou
- The Key Lab of Plant Cell Engineering and Germplasm Innovation, Ministry of Education of China, School of Life Science, Shandong University, Jinan, Shandong 250100, PR China.
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Huang YJ, Liu LL, Huang JQ, Wang ZJ, Chen FF, Zhang QX, Zheng BS, Chen M. Use of transcriptome sequencing to understand the pistillate flowering in hickory (Carya cathayensis Sarg.). BMC Genomics 2013; 14:691. [PMID: 24106755 PMCID: PMC3853572 DOI: 10.1186/1471-2164-14-691] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 10/06/2013] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Different from herbaceous plants, the woody plants undergo a long-period vegetative stage to achieve floral transition. They then turn into seasonal plants, flowering annually. In this study, a preliminary model of gene regulations for seasonal pistillate flowering in hickory (Carya cathayensis) was proposed. The genome-wide dynamic transcriptome was characterized via the joint-approach of RNA sequencing and microarray analysis. RESULTS Differential transcript abundance analysis uncovered the dynamic transcript abundance patterns of flowering correlated genes and their major functions based on Gene Ontology (GO) analysis. To explore pistillate flowering mechanism in hickory, a comprehensive flowering gene regulatory network based on Arabidopsis thaliana was constructed by additional literature mining. A total of 114 putative flowering or floral genes including 31 with differential transcript abundance were identified in hickory. The locations, functions and dynamic transcript abundances were analyzed in the gene regulatory networks. A genome-wide co-expression network for the putative flowering or floral genes shows three flowering regulatory modules corresponding to response to light abiotic stimulus, cold stress, and reproductive development process, respectively. Totally 27 potential flowering or floral genes were recruited which are meaningful to understand the hickory specific seasonal flowering mechanism better. CONCLUSIONS Flowering event of pistillate flower bud in hickory is triggered by several pathways synchronously including the photoperiod, autonomous, vernalization, gibberellin, and sucrose pathway. Totally 27 potential flowering or floral genes were recruited from the genome-wide co-expression network function module analysis. Moreover, the analysis provides a potential FLC-like gene based vernalization pathway and an 'AC' model for pistillate flower development in hickory. This work provides an available framework for pistillate flower development in hickory, which is significant for insight into regulation of flowering and floral development of woody plants.
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Affiliation(s)
- You-Jun Huang
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang 311300, China
| | - Li-Li Liu
- Department of Bioinformatics, State Key Laboratory of Plant Physiology and Biochemistry, College of life Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Jian-Qin Huang
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang 311300, China
| | - Zheng-Jia Wang
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang 311300, China
| | - Fang-Fang Chen
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang 311300, China
| | - Qi-Xiang Zhang
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang 311300, China
| | - Bing-Song Zheng
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang 311300, China
| | - Ming Chen
- Department of Bioinformatics, State Key Laboratory of Plant Physiology and Biochemistry, College of life Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
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Wang Y, Chantreau M, Sibout R, Hawkins S. Plant cell wall lignification and monolignol metabolism. FRONTIERS IN PLANT SCIENCE 2013; 4:220. [PMID: 23847630 PMCID: PMC3705174 DOI: 10.3389/fpls.2013.00220] [Citation(s) in RCA: 169] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 06/06/2013] [Indexed: 05/18/2023]
Abstract
Plants are built of various specialized cell types that differ in their cell wall composition and structure. The cell walls of certain tissues (xylem, sclerenchyma) are characterized by the presence of the heterogeneous lignin polymer that plays an essential role in their physiology. This phenolic polymer is composed of different monomeric units - the monolignols - that are linked together by several covalent bonds. Numerous studies have shown that monolignol biosynthesis and polymerization to form lignin are tightly controlled in different cell types and tissues. However, our understanding of the genetic control of monolignol transport and polymerization remains incomplete, despite some recent promising results. This situation is made more complex since we know that monolignols or related compounds are sometimes produced in non-lignified tissues. In this review, we focus on some key steps of monolignol metabolism including polymerization, transport, and compartmentation. As well as being of fundamental interest, the quantity of lignin and its nature are also known to have a negative effect on the industrial processing of plant lignocellulose biomass. A more complete view of monolignol metabolism and the relationship that exists between lignin and other monolignol-derived compounds thereby appears essential if we wish to improve biomass quality.
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Affiliation(s)
- Yin Wang
- Unite Mixte de Recherche 1318, Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, Saclay Plant SciencesVersailles, France
| | - Maxime Chantreau
- Lille 1 UMR 1281, UniversitéLille Nord de FranceVilleneuve d’Ascq, France
- Unite Mixte de Recherche 1281, Stress Abiotiques et Différenciation des Végétaux Cultivés, Institut National de la Recherche AgronomiqueVilleneuve d’Ascq, France
| | - Richard Sibout
- Unite Mixte de Recherche 1318, Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, Saclay Plant SciencesVersailles, France
| | - Simon Hawkins
- Lille 1 UMR 1281, UniversitéLille Nord de FranceVilleneuve d’Ascq, France
- Unite Mixte de Recherche 1281, Stress Abiotiques et Différenciation des Végétaux Cultivés, Institut National de la Recherche AgronomiqueVilleneuve d’Ascq, France
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