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Lu X, Chen X, Liu J, Zheng M, Liang H. Integrating histology and phytohormone/metabolite profiling to understand rooting in yellow camellia cuttings. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 346:112160. [PMID: 38908800 DOI: 10.1016/j.plantsci.2024.112160] [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: 02/21/2024] [Revised: 05/29/2024] [Accepted: 06/12/2024] [Indexed: 06/24/2024]
Abstract
Vegetative propagation through cutting is a widely used clonal approach for maintaining desired genotypes. However, some woody species have difficulty forming adventitious roots (ARs) with this approach, including yellow camellia (YC) C. nitidissima. Yellow camellias, prized for their ornamental value and potential health benefits in tea, remain difficult to propagate clonally due to this rooting recalcitrance. As part of the efforts to understand YC cuttings' recalcitrance, we conducted a detailed investigation into AR formation in yellow camellia cuttings via histology and endogenous phytohormone dynamics during this process. We also compared YC endogenous phytohormone and metabolite phytohormone profiles with those of easy-to-root poplar and willow cuttings. Our results indicate that the induction of ARs in YC cuttings is achievable through auxin treatment, and YC ARs are initiated from cambial derivatives and develop a vascular system connected with that of the stem. During AR induction, endogenous hormones showed a dynamic profile, with IAA continuing to increase starting 9 days after auxin induction. JA, JA-Ile, and OPDA showed a similar trend as IAA but decreased by the 45th day. Cytokinin first decreased to its lowest level by the 18th day and then increased. SA largely exhibited an increasing trend with a drop on the 36th day, while ABA first increased to its peak level by the 18th day and then decreased. Compared to poplar, YC cuttings had a low level of IAA, IAA-Asp, and OPDA, and a high level of cytokinin and SA. Metabolite profiling highlighted significant down-accumulation of compounds associated with AR formation in yellow camellias, such as citric and ascorbic acid, fructose, sucrose, flavonoids, and phenolic acid derivatives. Our study reveals the unfavorable endogenous hormone and metabolite profiles underlying the rooting recalcitrance of YC cuttings, providing valuable knowledge for addressing this challenge in clonal propagation.
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Affiliation(s)
- Xinya Lu
- Department of Biochemistry and Genetics, Clemson University, Clemson, SC 29634, United States
| | - Xiaotong Chen
- Department of Biochemistry and Genetics, Clemson University, Clemson, SC 29634, United States
| | - Jiayin Liu
- Department of Biochemistry and Genetics, Clemson University, Clemson, SC 29634, United States
| | - Mo Zheng
- D.W. Daniel High School, Central, SC 29630, United States
| | - Haiying Liang
- Department of Biochemistry and Genetics, Clemson University, Clemson, SC 29634, United States.
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Castro-Camba R, Neves M, Correia S, Canhoto J, Vielba JM, Sánchez C. Ethylene Action Inhibition Improves Adventitious Root Induction in Adult Chestnut Tissues. PLANTS (BASEL, SWITZERLAND) 2024; 13:738. [PMID: 38475584 DOI: 10.3390/plants13050738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/02/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024]
Abstract
Phase change refers to the process of maturation and transition from the juvenile to the adult stage. In response to this shift, certain species like chestnut lose the ability to form adventitious roots, thereby hindering the successful micropropagation of adult plants. While auxin is the main hormone involved in adventitious root formation, other hormones, such as ethylene, are also thought to play a role in its induction and development. In this study, experiments were carried out to determine the effects of ethylene on the induction and growth of adventitious roots. The analysis was performed in two types of chestnut microshoots derived from the same tree, a juvenile-like line with a high rooting ability derived from basal shoots (P2BS) and a line derived from crown branches (P2CR) with low rooting responses. By means of the application of compounds to modify ethylene content or inhibit its signalling, the potential involvement of this hormone in the induction of adventitious roots was analysed. Our results show that ethylene can modify the rooting competence of mature shoots, while the response in juvenile material was barely affected. To further characterise the molecular reasons underlying this maturation-derived shift in behaviour, specific gene expression analyses were developed. The findings suggest that several mechanisms, including ethylene signalling, auxin transport and epigenetic modifications, relate to the modulation of the rooting ability of mature chestnut microshoots and their recalcitrant behaviour.
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Affiliation(s)
- Ricardo Castro-Camba
- Department of Plant Production, Misión Biológica de Galicia, CSIC, Avda de Vigo s/n, 15705 Santiago de Compostela, Spain
| | - Mariana Neves
- Centre for Functional Ecology, TERRA Associate Laboratory, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Sandra Correia
- Centre for Functional Ecology, TERRA Associate Laboratory, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
- InnovPlantProtect CoLab, Estrada de Gil Vaz, 7350-478 Elvas, Portugal
| | - Jorge Canhoto
- Centre for Functional Ecology, TERRA Associate Laboratory, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Jesús M Vielba
- Department of Plant Production, Misión Biológica de Galicia, CSIC, Avda de Vigo s/n, 15705 Santiago de Compostela, Spain
| | - Conchi Sánchez
- Department of Plant Production, Misión Biológica de Galicia, CSIC, Avda de Vigo s/n, 15705 Santiago de Compostela, Spain
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Du Q, Song K, Wang L, Du L, Du H, Li B, Li H, Yang L, Wang Y, Liu P. Integrated Transcriptomics and Metabolomics Analysis Promotes the Understanding of Adventitious Root Formation in Eucommia ulmoides Oliver. PLANTS (BASEL, SWITZERLAND) 2024; 13:136. [PMID: 38202444 PMCID: PMC10780705 DOI: 10.3390/plants13010136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/12/2024]
Abstract
As a primary approach to nutrient propagation for many woody plants, cutting roots is essential for the breeding and production of Eucommia ulmoides Oliver. In this study, hormone level, transcriptomics, and metabolomics analyses were performed on two E. ulmoides varieties with different adventitious root (AR) formation abilities. The higher JA level on the 0th day and the lower JA level on the 18th day promoted superior AR development. Several hub genes executed crucial roles in the crosstalk regulation of JA and other hormones, including F-box protein (EU012075), SAUR-like protein (EU0125382), LOB protein (EU0124232), AP2/ERF transcription factor (EU0128499), and CYP450 protein (EU0127354). Differentially expressed genes (DEGs) and metabolites of AR formation were enriched in phenylpropanoid biosynthesis, flavonoid biosynthesis, and isoflavonoid biosynthesis pathways. The up-regulated expression of PAL, CCR, CAD, DFR, and HIDH genes on the 18th day could contribute to AR formation. The 130 cis-acting lncRNAs had potential regulatory functions on hub genes in the module that significantly correlated with JA and DEGs in three metabolism pathways. These revealed key molecules, and vital pathways provided more comprehensive insight for the AR formation mechanism of E. ulmoides and other plants.
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Affiliation(s)
- Qingxin Du
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou 450003, China; (Q.D.); (L.W.); (L.D.); (H.D.)
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Kangkang Song
- College of Plant Protection and Agricultural Big-Data Research Center, Shandong Agricultural University, Tai’an 271018, China; (K.S.); (B.L.)
- State Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River, Mountain Tai Forest Ecosystem Research Station of State Forestry and Grassland Administration, College of Forestry, Shandong Agricultural University, Tai’an 271018, China
| | - Lu Wang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou 450003, China; (Q.D.); (L.W.); (L.D.); (H.D.)
| | - Lanying Du
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou 450003, China; (Q.D.); (L.W.); (L.D.); (H.D.)
| | - Hongyan Du
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou 450003, China; (Q.D.); (L.W.); (L.D.); (H.D.)
| | - Bin Li
- College of Plant Protection and Agricultural Big-Data Research Center, Shandong Agricultural University, Tai’an 271018, China; (K.S.); (B.L.)
| | - Haozhen Li
- College of Plant Protection and Agricultural Big-Data Research Center, Shandong Agricultural University, Tai’an 271018, China; (K.S.); (B.L.)
| | - Long Yang
- College of Plant Protection and Agricultural Big-Data Research Center, Shandong Agricultural University, Tai’an 271018, China; (K.S.); (B.L.)
| | - Yan Wang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou 450003, China; (Q.D.); (L.W.); (L.D.); (H.D.)
| | - Panfeng Liu
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou 450003, China; (Q.D.); (L.W.); (L.D.); (H.D.)
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Abubakar AS, Wu Y, Chen F, Zhu A, Chen P, Chen K, Qiu X, Huang X, Zhao H, Chen J, Gao G. Comprehensive Analysis of WUSCEL-Related Homeobox Gene Family in Ramie ( Boehmeria nivea) Indicates Its Potential Role in Adventitious Root Development. BIOLOGY 2023; 12:1475. [PMID: 38132301 PMCID: PMC10740585 DOI: 10.3390/biology12121475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/10/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023]
Abstract
A WUSCHEL-related homeobox (WOX) gene family has been implicated in promoting vegetative organs to embryonic transition and maintaining plant embryonic stem cell identity. Using genome-wide analysis, we identified 17 candidates, WOX genes in ramie (Boehmeria nivea). The genes (BnWOX) showed highly conserved homeodomain regions typical of WOX. Based on phylogenetic analysis, they were classified into three distinct groups: modern, intermediate, and ancient clades. The genes displayed 65% and 35% collinearities with their Arabidopsis thaliana and Oryza sativa ortholog, respectively, and exhibited similar motifs, suggesting similar functions. Furthermore, four segmental duplications (BnWOX10/14, BnWOX13A/13B, BnWOX9A/9B, and BnWOX6A/Maker00021031) and a tandem-duplicated pair (BnWOX5/7) among the putative ramie WOX genes were obtained, suggesting that whole-genome duplication (WGD) played a role in WOX gene expansion. Expression profiling analysis of the genes in the bud, leaf, stem, and root of the stem cuttings revealed higher expression levels of BnWOX10 and BnWOX14 in the stem and root and lower in the leaf consistent with the qRT-PCR analysis, suggesting their direct roles in ramie root formation. Analysis of the rooting characteristics and expression in the stem cuttings of sixty-seven different ramie genetic resources showed a possible involvement of BnWOX14 in the adventitious rooting of ramie. Thus, this study provides valuable information on ramie WOX genes and lays the foundation for further research.
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Affiliation(s)
- Aminu Shehu Abubakar
- Hunan Provincial Key Laboratory of the TCM Agricultural Biogenomics, Changsha Medical University, Changsha 410219, China; (A.S.A.); (F.C.)
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
- Department of Agronomy, Bayero University Kano, PMB 3011, Kano 700241, Nigeria
| | - Yongmei Wu
- Hunan Provincial Key Laboratory of the TCM Agricultural Biogenomics, Changsha Medical University, Changsha 410219, China; (A.S.A.); (F.C.)
| | - Fengming Chen
- Hunan Provincial Key Laboratory of the TCM Agricultural Biogenomics, Changsha Medical University, Changsha 410219, China; (A.S.A.); (F.C.)
| | - Aiguo Zhu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572024, China
| | - Ping Chen
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572024, China
| | - Kunmei Chen
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572024, China
| | - Xiaojun Qiu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
| | - Xiaoyu Huang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
| | - Haohan Zhao
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
| | - Jikang Chen
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
- Key Laboratory of Biological and Processing for Bast Fiber Crops, Changsha 410221, China
| | - Gang Gao
- Hunan Provincial Key Laboratory of the TCM Agricultural Biogenomics, Changsha Medical University, Changsha 410219, China; (A.S.A.); (F.C.)
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572024, China
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Wamhoff D, Patzer L, Schulz DF, Debener T, Winkelmann T. GWAS of adventitious root formation in roses identifies a putative phosphoinositide phosphatase (SAC9) for marker-assisted selection. PLoS One 2023; 18:e0287452. [PMID: 37595005 PMCID: PMC10437954 DOI: 10.1371/journal.pone.0287452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 06/06/2023] [Indexed: 08/20/2023] Open
Abstract
Rose propagation by cuttings is limited by substantial genotypic differences in adventitious root formation. To identify possible genetic factors causing these differences and to develop a marker for marker-assisted selection for high rooting ability, we phenotyped 95 cut and 95 garden rose genotypes in a hydroponic rooting system over 6 weeks. Data on rooting percentage after 3 to 6 weeks, root number, and root fresh mass were highly variable among genotypes and used in association mappings performed on genotypic information from the WagRhSNP 68 K Axiom SNP array for roses. GWAS analyses revealed only one significantly associated SNP for rooting percentage after 3 weeks. Nevertheless, prominent genomic regions/peaks were observed and further analysed for rooting percentage after 6 weeks, root number and root fresh mass. Some of the SNPs in these peak regions were associated with large effects on adventitious root formation traits. Very prominent were ten SNPs, which were all located in a putative phosphoinositide phosphatase SAC9 on chromosome 2 and showed very high effects on rooting percentage after 6 weeks of more than 40% difference between nulliplex and quadruplex genotypes. SAC9 was reported to be involved in the regulation of endocytosis and in combination with other members of the SAC gene family to regulate the translocation of auxin-efflux PIN proteins via the dephosphorylation of phosphoinositides. For one SNP within SAC9, a KASP marker was successfully derived and used to select genotypes with a homozygous allele configuration. Phenotyping these homozygous genotypes for adventitious root formation verified the SNP allele dosage effect on rooting. Hence, the presented KASP derived from a SNP located in SAC9 can be used for marker-assisted selection in breeding programs for high rooting ability in the future.
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Affiliation(s)
- David Wamhoff
- Institute of Horticultural Production Systems, Section Woody Plant and Propagation Physiology, Leibniz Universität Hannover, Hannover, Germany
| | - Laurine Patzer
- Institute of Plant Genetics, Section Molecular Plant Breeding, Leibniz Universität Hannover, Hannover, Germany
| | - Dietmar Frank Schulz
- Institute of Plant Genetics, Section Molecular Plant Breeding, Leibniz Universität Hannover, Hannover, Germany
| | - Thomas Debener
- Institute of Plant Genetics, Section Molecular Plant Breeding, Leibniz Universität Hannover, Hannover, Germany
| | - Traud Winkelmann
- Institute of Horticultural Production Systems, Section Woody Plant and Propagation Physiology, Leibniz Universität Hannover, Hannover, Germany
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Vilasboa J, Da Costa CT, Fett-Neto AG. Environmental Modulation of Mini-Clonal Gardens for Cutting Production and Propagation of Hard- and Easy-to-Root Eucalyptus spp. PLANTS (BASEL, SWITZERLAND) 2022; 11:3281. [PMID: 36501321 PMCID: PMC9740115 DOI: 10.3390/plants11233281] [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: 10/18/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Clonal Eucalyptus propagation is essential for various industry sectors. It requires cuttings to successfully develop adventitious roots (ARs). Environmental conditions are influential on AR development and may be altered to modulate the productivity of hard-to-root clones. The current knowledge gap in research on the physiological patterns underlying commercial-scale propagation results hinders the design of novel strategies. This study aimed to identify patterns of variation in AR-relevant parameters in contrasting seasons and species with distinct rooting performances. E. dunnii and E. ×urograndis (hard- (hardR) and easy-to-root (easyR), respectively) mini-stumps were subjected to light modulation treatments and to mini-tunnel use (MT) for a year. The treatment impact on the branching and rooting rates was recorded. The carbohydrate content, AR-related gene expression, and mineral nutrition profiles of cuttings from the control (Ctrl) and treated mini-stumps were analyzed. Light treatments were often detrimental to overall productivity, while MTs had a positive effect during summer, when it altered the cutting leaf nutrient profiles. Species and seasonality played large roles in all the assessed parameters. E. ×urograndis was particularly susceptible to seasonality, and its overall superior performance correlated with changes in its gene expression profile from excision to AR formation. These patterns indicate fundamental differences between easyR and hardR clones that contribute to the design of data-driven management strategies aiming to enhance propagation protocols.
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Affiliation(s)
- Johnatan Vilasboa
- Plant Physiology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
- Center for Biotechnology, Federal University of Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
| | - Cibele T. Da Costa
- Plant Physiology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
- Department of Botany, Federal University of Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
| | - Arthur G. Fett-Neto
- Plant Physiology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
- Center for Biotechnology, Federal University of Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
- Department of Botany, Federal University of Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
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Wang Y, Zhao H, Hu X, Zhang Y, Zhang Z, Zhang L, Li L, Hou L, Li M. Transcriptome and hormone Analyses reveal that melatonin promotes adventitious rooting in shaded cucumber hypocotyls. FRONTIERS IN PLANT SCIENCE 2022; 13:1059482. [PMID: 36518515 PMCID: PMC9742233 DOI: 10.3389/fpls.2022.1059482] [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: 10/01/2022] [Accepted: 11/11/2022] [Indexed: 06/17/2023]
Abstract
Melatonin, a multi-regulatory molecule, stimulates root generation and regulates many aspects of plant growth and developmental processes. To gain insight into the effects of melatonin on adventitious root (AR) formation, we use cucumber seedings subjected to one of three treatments: EW (hypocotyl exposed and irrigated with water), SW (hypocotyl shaded and irrigated with water) and SM (hypocotyl shaded and irrigated with 100 µM melatonin). Under shaded conditions, melatonin induced significant AR formation in the hypocotyl. To explore the mechanism of this melatonin-induced AR formation, we used transcriptome analysis to identify 1296 significant differentially expressed genes (DEGs). Comparing SM with SW, a total of 774 genes were upregulated and 522 genes were downregulated. The DEGs were classified among different metabolic pathways, especially those connected with the synthesis of secondary metabolites, with hormone signal transduction and with plant-pathogen interactions. Analyses indicate exogenous melatonin increased contents of endogenous auxin, jasmonic acid, salicylic acid, cytokinin and abscisic acid levels during AR formation. This study indicates melatonin promotes AR formation in cucumber seedings by regulating the expressions of genes related to hormone synthesis, signaling and cell wall formation, as well as by increasing the contents of auxin, cytokinin, jasmonic acid, salicylic acid and abscisic acid. This research elucidates the molecular mechanisms of melatonin's role in promoting AR formation in the hypocotyl of cucumber seedings under shaded conditions.
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Affiliation(s)
- Yuping Wang
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
- Experimental Teaching Center, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Hailiang Zhao
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Xiaohui Hu
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Yi Zhang
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Zicun Zhang
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Lu Zhang
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Lixia Li
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Leiping Hou
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Meilan Li
- College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi, China
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Yun F, Huang D, Zhang M, Wang C, Deng Y, Gao R, Hou X, Liu Z, Liao W. Comprehensive transcriptome analysis unravels the crucial genes during adventitious root development induced by carbon monoxide in Cucumis sativus L. Mol Biol Rep 2022; 49:11327-11340. [PMID: 35906509 DOI: 10.1007/s11033-022-07797-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 03/29/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Carbon monoxide (CO) has been reported to be participated in adventitious rooting. However, knowledge about the interrelationship between CO and phytohormones during rooting is obscure. The molecular mechanism of CO-induced rooting is currently unclear. METHODS AND RESULTS The roles of CO in adventitious rooting in Cucumis sativus L. at the transcriptional level were investigated. The results show that 10 μM hematin (a CO donor) has a significant positive effect on adventitious rooting in cucumber. A total of 1792 differentially expressed genes (DEGs; 1103 up-regulated and 689 down-regulated) were identified in hematin treatment by RNA sequencing analysis. There were 37, 18 and 19 DEGs significantly enriched in plant hormone signal transduction, sucrose and starch metabolism, and phenylalanine metabolism, respectively. Both transcriptome and real-time quantitative PCR results showed that the expressions of AUX22D, IAA6, SAUR21, SAUR24, GH3.5, CYCD3-3, TIFY10a, TIFY10A and TIF9 promoted the accumulation of IAA, BR, JA and SA in plant hormone signal transduction. The up-regulation of HK3, TPPF, otsB, TPS7, TPS9 and the down-regulation of AGPS1, AGPS3 increased the content of starch and total sugar by mediating the activity of some critical enzymes, including HK, TPS, TPP and AGP. PER47, PER61, PER24, PER66, PER4 and CCR2 increased the lignin content. CONCLUSION Our results suggest that CO could promote the accumulation of plant hormones, starch, sugar and lignin during adventitious rooting by regulating the expression of some related genes, including AUX22D, IAA6, SAUR21, SAUR24, GH3.5, CYCD3-3, TIFY10a, TIFY10A, TIF9 HK3, otsB, TPS7, TPS9, AGPS1, AGPS3, PER47, PER61, PER24, PER66, PER4, and CCR2. Thus, we provides an interesting candidate gene list for further studies on the molecular mechanisms of adventitious rooting.
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Affiliation(s)
- Fahong Yun
- College of Horticulture, Gansu Agricultural University, 1 Yingmen Village, Anning District, Lanzhou, 730070, China
| | - Dengjing Huang
- College of Horticulture, Gansu Agricultural University, 1 Yingmen Village, Anning District, Lanzhou, 730070, China
| | - Meiling Zhang
- College of Science, Gansu Agricultural University, 1 Yingmen Village, Anning District, Lanzhou, 730070, China
| | - Chunlei Wang
- College of Horticulture, Gansu Agricultural University, 1 Yingmen Village, Anning District, Lanzhou, 730070, China
| | - Yuzheng Deng
- College of Horticulture, Gansu Agricultural University, 1 Yingmen Village, Anning District, Lanzhou, 730070, China
| | - Rong Gao
- College of Horticulture, Gansu Agricultural University, 1 Yingmen Village, Anning District, Lanzhou, 730070, China
| | - Xuemei Hou
- College of Horticulture, Gansu Agricultural University, 1 Yingmen Village, Anning District, Lanzhou, 730070, China
| | - Zesheng Liu
- College of Horticulture, Gansu Agricultural University, 1 Yingmen Village, Anning District, Lanzhou, 730070, China
| | - Weibiao Liao
- College of Horticulture, Gansu Agricultural University, 1 Yingmen Village, Anning District, Lanzhou, 730070, China.
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Liu W, Zhang Y, Fang X, Tran S, Zhai N, Yang Z, Guo F, Chen L, Yu J, Ison MS, Zhang T, Sun L, Bian H, Zhang Y, Yang L, Xu L. Transcriptional landscapes of de novo root regeneration from detached Arabidopsis leaves revealed by time-lapse and single-cell RNA sequencing analyses. PLANT COMMUNICATIONS 2022; 3:100306. [PMID: 35605192 PMCID: PMC9284295 DOI: 10.1016/j.xplc.2022.100306] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/17/2022] [Accepted: 02/21/2022] [Indexed: 05/19/2023]
Abstract
Detached Arabidopsis thaliana leaves can regenerate adventitious roots, providing a platform for studying de novo root regeneration (DNRR). However, the comprehensive transcriptional framework of DNRR remains elusive. Here, we provide a high-resolution landscape of transcriptome reprogramming from wound response to root organogenesis in DNRR and show key factors involved in DNRR. Time-lapse RNA sequencing (RNA-seq) of the entire leaf within 12 h of leaf detachment revealed rapid activation of jasmonate, ethylene, and reactive oxygen species (ROS) pathways in response to wounding. Genetic analyses confirmed that ethylene and ROS may serve as wound signals to promote DNRR. Next, time-lapse RNA-seq within 5 d of leaf detachment revealed the activation of genes involved in organogenesis, wound-induced regeneration, and resource allocation in the wounded region of detached leaves during adventitious rooting. Genetic studies showed that BLADE-ON-PETIOLE1/2, which control aboveground organs, PLETHORA3/5/7, which control root organogenesis, and ETHYLENE RESPONSE FACTOR115, which controls wound-induced regeneration, are involved in DNRR. Furthermore, single-cell RNA-seq data revealed gene expression patterns in the wounded region of detached leaves during adventitious rooting. Overall, our study not only provides transcriptome tools but also reveals key factors involved in DNRR from detached Arabidopsis leaves.
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Affiliation(s)
- Wu Liu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China
| | - Yuyun Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
| | - Xing Fang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
| | - Sorrel Tran
- Department of Plant Pathology, University of Georgia, Athens, GA 30602, USA
| | - Ning Zhai
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China
| | - Zhengfei Yang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China; College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Fu Guo
- Hainan Institute of Zhejiang University, Yazhou Bay Science and Technology City, Sanya 572025, China
| | - Lyuqin Chen
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
| | - Jie Yu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China
| | - Madalene S Ison
- Department of Plant Pathology, University of Georgia, Athens, GA 30602, USA
| | - Teng Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
| | - Lijun Sun
- School of Life Sciences, Nantong University, Nantong, China
| | - Hongwu Bian
- Institute of Genetic and Regenerative Biology, Key Laboratory for Cell and Gene Engineering of Zhejiang Province, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yijing Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China; State Key Laboratory of Genetic Engineering, Collaborative Innovation Center of Genetics and Development, Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, China.
| | - Li Yang
- Department of Plant Pathology, University of Georgia, Athens, GA 30602, USA.
| | - Lin Xu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China.
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10
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Wang Y, Pang D, Ruan L, Liang J, Zhang Q, Qian Y, Zhang Y, Bai P, Wu L, Cheng H, Cui Q, Wang L, Wei K. Integrated transcriptome and hormonal analysis of naphthalene acetic acid-induced adventitious root formation of tea cuttings (Camellia sinensis). BMC PLANT BIOLOGY 2022; 22:319. [PMID: 35787241 PMCID: PMC9251942 DOI: 10.1186/s12870-022-03701-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Tea plant breeding or cultivation mainly involves propagation via cuttings, which not only ensures the inheritance of the excellent characteristics of the mother plant but also facilitates mechanized management. The formation of adventitious root (AR) determines the success of cutting-based propagation, and auxin is an essential factor involved in this process. To understand the molecular mechanism underlying AR formation in nodal tea cuttings, transcriptome and endogenous hormone analysis was performed on the stem bases of red (mature)- and green (immature)-stem cuttings of 'Echa 1 hao' tea plant as affected by a pulse treatment with naphthalene acetic acid (NAA). RESULTS In this study, NAA significantly promoted AR formation in both red- and green-stem cuttings but slightly reduced callus formation. External application of NAA reduced the levels of endogenous indole-3-acetic acid (IAA) and cytokinin (TZR, trans-zeatin riboside). The number of DEGs (NAA vs. CK) identified in the green-stem cuttings was significantly higher than that in the red-stem cuttings, which corresponded to a higher rooting rate of green-stem cuttings under the NAA treatment. A total of 82 common DEGs were identified as being hormone-related and involved in the auxin, cytokinin, abscisic acid, ethylene, salicylic acid, brassinosteroid, and jasmonic acid pathways. The negative regulation of NAA-induced IAA and GH3 genes may explain the decrease of endogenous IAA. NAA reduced endogenous cytokinin levels and further downregulated the expression of cytokinin signalling-related genes. By the use of weighted gene co-expression network analysis (WGCNA), several hub genes, including three [cellulose synthase (CSLD2), SHAVEN3-like 1 (SVL1), SMALL AUXIN UP RNA (SAUR21)] that are highly related to root development in other crops, were identified that might play important roles in AR formation in tea cuttings. CONCLUSIONS NAA promotes the formation of AR of tea cuttings in coordination with endogenous hormones. The most important endogenous AR inductor, IAA, was reduced in response to NAA. DEGs potentially involved in NAA-mediated AR formation of tea plant stem cuttings were identified via comparative transcriptome analysis. Several hub genes, such as CSLD2, SVL1 and SAUR21, were identified that might play important roles in AR formation in tea cuttings.
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Affiliation(s)
- Yongxin Wang
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, National Center for Tea Improvement, Tea Research Institute Chinese Academy of Agricultural Sciences (TRICAAS), Hangzhou, 310008, China
| | - Dandan Pang
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, National Center for Tea Improvement, Tea Research Institute Chinese Academy of Agricultural Sciences (TRICAAS), Hangzhou, 310008, China
- Tea Research Institute, Yunnan Academy of Agricultural Sciences, Menghai, 666201, China
| | - Li Ruan
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, National Center for Tea Improvement, Tea Research Institute Chinese Academy of Agricultural Sciences (TRICAAS), Hangzhou, 310008, China
| | - Jinbo Liang
- Tea Research Institute of Enshi Academy of Agricultural Sciences, Enshi, 445000, China
| | - Qiang Zhang
- Tea Research Institute of Enshi Academy of Agricultural Sciences, Enshi, 445000, China
| | - Yinhong Qian
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, National Center for Tea Improvement, Tea Research Institute Chinese Academy of Agricultural Sciences (TRICAAS), Hangzhou, 310008, China
| | - Yazhen Zhang
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, National Center for Tea Improvement, Tea Research Institute Chinese Academy of Agricultural Sciences (TRICAAS), Hangzhou, 310008, China
| | - Peixian Bai
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, National Center for Tea Improvement, Tea Research Institute Chinese Academy of Agricultural Sciences (TRICAAS), Hangzhou, 310008, China
| | - Liyun Wu
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, National Center for Tea Improvement, Tea Research Institute Chinese Academy of Agricultural Sciences (TRICAAS), Hangzhou, 310008, China
| | - Hao Cheng
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, National Center for Tea Improvement, Tea Research Institute Chinese Academy of Agricultural Sciences (TRICAAS), Hangzhou, 310008, China
| | - Qingmei Cui
- Tea Research Institute of Enshi Academy of Agricultural Sciences, Enshi, 445000, China.
| | - Liyuan Wang
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, National Center for Tea Improvement, Tea Research Institute Chinese Academy of Agricultural Sciences (TRICAAS), Hangzhou, 310008, China.
| | - Kang Wei
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, National Center for Tea Improvement, Tea Research Institute Chinese Academy of Agricultural Sciences (TRICAAS), Hangzhou, 310008, China.
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11
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Sreeratree J, Butsayawarapat P, Chaisan T, Somta P, Juntawong P. RNA-Seq Reveals Waterlogging-Triggered Root Plasticity in Mungbean Associated with Ethylene and Jasmonic Acid Signal Integrators for Root Regeneration. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11070930. [PMID: 35406910 PMCID: PMC9002673 DOI: 10.3390/plants11070930] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/26/2022] [Accepted: 03/28/2022] [Indexed: 05/26/2023]
Abstract
Global climate changes increase the frequency and intensity of heavy precipitation events, which result in flooding or soil waterlogging. One way to overcome these low-oxygen stresses is via modifying the plant root system to improve internal aeration. Here, we used a comparative RNA-seq based transcriptomic approach to elucidate the molecular mechanisms of waterlogging-triggered root plasticity in mungbean (Vigna radiata), a major grain legume cultivated in Asia. Two mungbean varieties with contrasting waterlogging tolerance due to the plasticity of the root system architecture were subjected to short-term and long-term waterlogging. Then, RNA-seq was performed. Genes highly expressed in both genotypes under short-term waterlogging are related to glycolysis and fermentation. Under long-term waterlogging, the expression of these genes was less induced in the tolerant variety, suggesting it had effectively adapted to waterlogging via enhancing root plasticity. Remarkably, under short-term waterlogging, the expression of several transcription factors that serve as integrators for ethylene and jasmonic acid signals controlling root stem cell development was highly upregulated only in the tolerant variety. Sequentially, root development-related genes were more expressed in the tolerant variety under long-term waterlogging. Our findings suggest that ethylene and jasmonic acids may contribute to waterlogging-triggered root plasticity by relaying environmental signals to reprogram root regeneration. This research provides the basis for the breeding and genetic engineering of waterlogging-tolerant crops in the future.
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Affiliation(s)
- Jaruwan Sreeratree
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (J.S.); (P.B.)
| | - Pimprapai Butsayawarapat
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (J.S.); (P.B.)
| | - Tanapon Chaisan
- Department of Agronomy, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand;
| | - Prakit Somta
- Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom 73140, Thailand;
| | - Piyada Juntawong
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (J.S.); (P.B.)
- Center for Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University, Bangkok 10900, Thailand
- Omics Center for Agriculture, Bioresources, Food and Health, Kasetsart University (OmiKU), Bangkok 10900, Thailand
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12
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Abstract
Adventitious root (AR) formation is required for the vegetative propagation of economically important horticultural crops, such as apples. Asexual propagation is commonly utilized for breeding programs because of its short life cycle, true-to-typeness, and high efficiency. The lack of AR formation from stem segments is a barrier to segment survival. Therefore, understanding the AR regulatory mechanisms is vital for the prolonged and effective use of biological resources. Several studies have been undertaken to comprehend the molecular and physiological control of AR, which has greatly extended our knowledge regarding AR formation in apples and other crops. Auxin, a master controller of AR formation, is widely used for inducing AR formation in stem cutting. At the same time, cytokinins (CKs) are important for cell division and molecular reprograming, and other hormones, sugars, and nutrients interact with auxin to control excision-induced AR formation. In this review, we discuss the present understandings of ARs’ formation from physiological and molecular aspects and highlight the immediate advancements made in identifying underlying mechanisms involved in the regulation of ARs. Despite the progress made in the previous decades, many concerns about excision-induced AR formation remain unanswered. These focus on the specific functions and interactions of numerous hormonal, molecular, and metabolic components and the overall framework of the entire shoot cutting in a demanding environment.
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13
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Bagautdinova ZZ, Omelyanchuk N, Tyapkin AV, Kovrizhnykh VV, Lavrekha VV, Zemlyanskaya EV. Salicylic Acid in Root Growth and Development. Int J Mol Sci 2022; 23:ijms23042228. [PMID: 35216343 PMCID: PMC8875895 DOI: 10.3390/ijms23042228] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/10/2022] [Accepted: 02/14/2022] [Indexed: 11/18/2022] Open
Abstract
In plants, salicylic acid (SA) is a hormone that mediates a plant’s defense against pathogens. SA also takes an active role in a plant’s response to various abiotic stresses, including chilling, drought, salinity, and heavy metals. In addition, in recent years, numerous studies have confirmed the important role of SA in plant morphogenesis. In this review, we summarize data on changes in root morphology following SA treatments under both normal and stress conditions. Finally, we provide evidence for the role of SA in maintaining the balance between stress responses and morphogenesis in plant development, and also for the presence of SA crosstalk with other plant hormones during this process.
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Affiliation(s)
- Zulfira Z. Bagautdinova
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.Z.B.); (N.O.); (A.V.T.); (V.V.K.); (V.V.L.)
| | - Nadya Omelyanchuk
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.Z.B.); (N.O.); (A.V.T.); (V.V.K.); (V.V.L.)
| | - Aleksandr V. Tyapkin
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.Z.B.); (N.O.); (A.V.T.); (V.V.K.); (V.V.L.)
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Vasilina V. Kovrizhnykh
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.Z.B.); (N.O.); (A.V.T.); (V.V.K.); (V.V.L.)
| | - Viktoriya V. Lavrekha
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.Z.B.); (N.O.); (A.V.T.); (V.V.K.); (V.V.L.)
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Elena V. Zemlyanskaya
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.Z.B.); (N.O.); (A.V.T.); (V.V.K.); (V.V.L.)
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia
- Correspondence:
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14
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Pan X, Yang Z, Xu L. Dual roles of jasmonate in adventitious rooting. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:6808-6810. [PMID: 34698862 PMCID: PMC8547146 DOI: 10.1093/jxb/erab378] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This article comments on: Dob A, Lakehal A, Novak O, Bellini C. 2021. Jasmonate inhibits adventitious root initiation through repression of CKX1 and activation of RAP2.6L transcription factor in Arabidopsis. Journal of Experimental Botany 72, 7107–7118.
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Affiliation(s)
- Xuan Pan
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
| | - Zhengfei Yang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China
- College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Lin Xu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China
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15
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Understanding a Mechanistic Basis of ABA Involvement in Plant Adaptation to Soil Flooding: The Current Standing. PLANTS 2021; 10:plants10101982. [PMID: 34685790 PMCID: PMC8537370 DOI: 10.3390/plants10101982] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/19/2021] [Accepted: 09/20/2021] [Indexed: 11/16/2022]
Abstract
Soil flooding severely impairs agricultural crop production. Plants can cope with flooding conditions by embracing an orchestrated set of morphological adaptations and physiological adjustments that are regulated by the elaborated hormonal signaling network. The most prominent of these hormones is ethylene, which has been firmly established as a critical signal in flooding tolerance. ABA (abscisic acid) is also known as a “stress hormone” that modulates various responses to abiotic stresses; however, its role in flooding tolerance remains much less established. Here, we discuss the progress made in the elucidation of morphological adaptations regulated by ABA and its crosstalk with other phytohormones under flooding conditions in model plants and agriculturally important crops.
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16
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Li X, Shen F, Xu X, Zheng Q, Wang Y, Wu T, Li W, Qiu C, Xu X, Han Z, Zhang X. An HD-ZIP transcription factor, MxHB13, integrates auxin-regulated and juvenility-determined control of adventitious rooting in Malus xiaojinensis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 107:1663-1680. [PMID: 34218490 DOI: 10.1111/tpj.15406] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 06/23/2021] [Indexed: 06/13/2023]
Abstract
Adventitious root (AR) formation is a critical factor in the vegetative propagation of forestry and horticultural plants. Competence for AR formation declines in many species during the miR156/SPL-mediated vegetative phase change. Auxin also plays a regulatory role in AR formation. In apple rootstock, both high miR156 expression and exogenous auxin application are prerequisites for AR formation. However, the mechanism by which the miR156/SPL module interacts with auxin in controlling AR formation is unclear. In this paper, leafy cuttings of juvenile (Mx-J) and adult (Mx-A) phase Malus xiaojinensis were used in an RNA-sequencing experiment. The results revealed that numerous genes involved in phytohormone signaling, carbohydrate metabolism, cell dedifferentiation, and reactivation were downregulated in Mx-A cuttings in response to indole butyric acid treatment. Among the differentially expressed genes, an HD-ZIP transcription factor gene, MxHB13, was found to be under negative regulation of MdSPL26 by directly binding to MxHB13 promoter. MxTIFY9 interacts with MxSPL26 and may play a role in co-repressing the expression of MxHB13. The expression of MxTIFY9 was induced by exogenous indole butyric acid. MxHB13 binds to the promoter of MxABCB19-2 and positively affects the expression. A model is proposed in which MxHB13 links juvenility-limited and auxin-limited AR recalcitrance mechanisms in Mx-A.
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Affiliation(s)
- Xu Li
- College of Horticulture, China Agricultural University, Beijing, China
| | - Fei Shen
- College of Horticulture, China Agricultural University, Beijing, China
| | - Xiaozhao Xu
- College of Horticulture, China Agricultural University, Beijing, China
| | - Qingbo Zheng
- College of Horticulture, China Agricultural University, Beijing, China
| | - Yi Wang
- College of Horticulture, China Agricultural University, Beijing, China
| | - Ting Wu
- College of Horticulture, China Agricultural University, Beijing, China
| | - Wei Li
- College of Horticulture, China Agricultural University, Beijing, China
| | - Changpeng Qiu
- College of Horticulture, China Agricultural University, Beijing, China
| | - Xuefeng Xu
- College of Horticulture, China Agricultural University, Beijing, China
| | - Zhenhai Han
- College of Horticulture, China Agricultural University, Beijing, China
| | - Xinzhong Zhang
- College of Horticulture, China Agricultural University, Beijing, China
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17
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Sharma M, Singh D, Saksena HB, Sharma M, Tiwari A, Awasthi P, Botta HK, Shukla BN, Laxmi A. Understanding the Intricate Web of Phytohormone Signalling in Modulating Root System Architecture. Int J Mol Sci 2021; 22:ijms22115508. [PMID: 34073675 PMCID: PMC8197090 DOI: 10.3390/ijms22115508] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 12/12/2022] Open
Abstract
Root system architecture (RSA) is an important developmental and agronomic trait that is regulated by various physical factors such as nutrients, water, microbes, gravity, and soil compaction as well as hormone-mediated pathways. Phytohormones act as internal mediators between soil and RSA to influence various events of root development, starting from organogenesis to the formation of higher order lateral roots (LRs) through diverse mechanisms. Apart from interaction with the external cues, root development also relies on the complex web of interaction among phytohormones to exhibit synergistic or antagonistic effects to improve crop performance. However, there are considerable gaps in understanding the interaction of these hormonal networks during various aspects of root development. In this review, we elucidate the role of different hormones to modulate a common phenotypic output, such as RSA in Arabidopsis and crop plants, and discuss future perspectives to channel vast information on root development to modulate RSA components.
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18
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Alaguero-Cordovilla A, Sánchez-García AB, Ibáñez S, Albacete A, Cano A, Acosta M, Pérez-Pérez JM. An auxin-mediated regulatory framework for wound-induced adventitious root formation in tomato shoot explants. PLANT, CELL & ENVIRONMENT 2021; 44:1642-1662. [PMID: 33464573 DOI: 10.1111/pce.14001] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 12/30/2020] [Accepted: 01/04/2021] [Indexed: 05/24/2023]
Abstract
Adventitious roots (ARs) are produced from non-root tissues in response to different environmental signals, such as abiotic stresses, or after wounding, in a complex developmental process that requires hormonal crosstalk. Here, we characterized AR formation in young seedlings of Solanum lycopersicum cv. 'Micro-Tom' after whole root excision by means of physiological, genetic and molecular approaches. We found that a regulated basipetal auxin transport from the shoot and local auxin biosynthesis triggered by wounding are both required for the re-establishment of internal auxin gradients within the vasculature. This promotes cell proliferation at the distal cambium near the wound in well-defined positions of the basal hypocotyl and during a narrow developmental window. In addition, a pre-established pattern of differential auxin responses along the apical-basal axis of the hypocotyl and an as of yet unknown cell-autonomous inhibitory pathway contribute to the temporal and spatial patterning of the newly formed ARs on isolated hypocotyl explants. Our work provides an experimental outline for the dissection of wound-induced AR formation in tomato, a species that is suitable for molecular identification of gene regulatory networks via forward and reverse genetics approaches.
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Affiliation(s)
| | | | - Sergio Ibáñez
- Instituto de Bioingeniería, Universidad Miguel Hernández, Elche, Spain
| | - Alfonso Albacete
- Present address: Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario (IMIDA), La Alberca, Spain
- CEBAS-CSIC, Department of Plant Nutrition, Campus Universitario de Espinardo, Espinardo, Murcia, Spain
| | - Antonio Cano
- Departamento de Biología Vegetal, Universidad de Murcia, Murcia, Spain
| | - Manuel Acosta
- Departamento de Biología Vegetal, Universidad de Murcia, Murcia, Spain
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19
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Devi J, Kumar R, Singh K, Gehlot A, Bhushan S, Kumar S. In vitro adventitious roots: a non-disruptive technology for the production of phytoconstituents on the industrial scale. Crit Rev Biotechnol 2021; 41:564-579. [PMID: 33586555 DOI: 10.1080/07388551.2020.1869690] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The current trends of consumer-driven demands for natural therapeutics and the availability of evidence-based phytopharmaceuticals from traditional knowledge has once again brought the medicinal plants into forefront of health. In 2019, World Health Organization global report on traditional and complementary medicine has also substantiated the revival of herbal medicine including its convergence with conventional medicine for the management and prevention of diseases. It means these industries need plenty of plant materials to meet the unprecedented demands of herbal formulations. However, it is pertinent to mention here that around 70-80% medicinal plants are sourced from the wild and most of such highly acclaimed plants are listed under Rare, Endangered and Threatened species by IUCN. Additionally, over 30% traditional health formulations are based on underground plant parts, which lead to the uprooting of plants. Overharvesting from limited plant populations, meager conventional cultivation and a rising fondness for natural products exerting enormous pressure on natural habitats. Therefore, the nondestructive means of phytochemical production employing biotechnological tools could be used for sustainable production and consumption patterns. In recent years, a number of reports described the use of adventitious roots induced under in vitro conditions for the extraction of phytochemicals on a sustainable basis. In this article, efforts are made to review recent developments in this area as well as understand the induction mechanisms of adventitious roots, their in vitro cultivation, probable factors that affect the growth and metabolite production, and assess the possibility of industrial scale production to meet the rising demands of natural herbs.
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Affiliation(s)
- Jyoti Devi
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Roushan Kumar
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Khem Singh
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, India
| | - Ashok Gehlot
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, India
| | - Shashi Bhushan
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.,Dietetics and Nutrition Technology, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, India
| | - Sanjay Kumar
- CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, India
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20
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Regulation of Sixth Seminal Root Formation by Jasmonate in Triticum aestivum L. PLANTS 2021; 10:plants10020219. [PMID: 33498738 PMCID: PMC7911905 DOI: 10.3390/plants10020219] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/18/2021] [Accepted: 01/20/2021] [Indexed: 01/08/2023]
Abstract
A well-developed root system is an important characteristic of crop plants, which largely determines their productivity, especially under conditions of water and nutrients deficiency. Being Poaceous, wheat has more than one seminal root. The number of grown seminal roots varies in different wheat accessions and is regulated by environmental factors. Currently, the molecular mechanisms determining the number of germinated seminal roots remain poorly understood. The analysis of the root system development in germinating seeds of genetically modified hexaploid wheat plants with altered activity of jasmonate biosynthesis pathway and seeds exogenously treated with methyl jasmonate revealed the role of jasmonates in the regulation of sixth seminal root development. This regulatory effect strongly depends on the jasmonate concentration and the duration of the exposure to this hormone. The maximum stimulatory effect of exogenously applied methyl jasmonate on the formation of the sixth seminal root was achieved at 200 μM concentration after 48 h of treatment. Further increase in concentration and exposure time does not increase the stimulating effect. While 95% of non-transgenic plants under non-stress conditions possess five or fewer seminal roots, the number of plants with developed sixth seminal root reaches up to 100% when selected transgenic lines are treated with methyl jasmonate.
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Chen K, Guo B, Yu C, Chen P, Chen J, Gao G, Wang X, Zhu A. Comparative Transcriptome Analysis Provides New Insights into the Molecular Regulatory Mechanism of Adventitious Root Formation in Ramie ( Boehmeria nivea L.). PLANTS 2021; 10:plants10010160. [PMID: 33467608 PMCID: PMC7830346 DOI: 10.3390/plants10010160] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/18/2020] [Accepted: 01/05/2021] [Indexed: 11/16/2022]
Abstract
The occurrence of adventitious roots is necessary for the survival of cuttings. In this study, comparative transcriptome analysis between two ramie (Boehmeria nivea L.) varieties with different adventitious root (AR) patterns was performed by mRNA-Seq before rooting (control, CK) and 10 days water-induced adventitious rooting (treatment, T) to reveal the regulatory mechanism of rooting. Characterization of the two ramie cultivars, Zhongzhu No 2 (Z2) and Huazhu No 4 (H4), indicated that Z2 had a high adventitious rooting rate but H4 had a low rooting rate. Twelve cDNA libraries of the two varieties were constructed, and a total of 26,723 genes were expressed. In the non-water culture condition, the number of the distinctive genes in H4 was 2.7 times of that in Z2, while in the water culture condition, the number of the distinctive genes in Z2 was nearly 2 times of that in H4. A total of 4411 and 5195 differentially expressed genes (DEGs) were identified in the comparison of H4CK vs. H4T and Z2CK vs. Z2T, respectively. After the water culture, more DEGs were upregulated in Z2, but more DEGs were downregulated in H4. Gene ontology (GO) functional analysis of the DEGs indicated that the polysaccharide metabolic process, carbohydrate metabolic process, cellular carbohydrate metabolic process, cell wall macromolecule metabolic process, and photosystem GO terms were distinctively significantly enriched in H4. Simultaneously, Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that photosynthesis, photosynthesis antenna proteins, and starch and sucrose metabolism pathways were distinctively significantly enriched in H4. Moreover, KEGG analysis showed that jasmonic acid (JA) could interact with ethylene to regulate the occurrence and number of AR in Z2. This study reveals the transcriptomic divergence of two ramie varieties with high and low adventitious rooting rates, and provides insights into the molecular regulatory mechanism of AR formation in ramie.
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Li SW. Molecular Bases for the Regulation of Adventitious Root Generation in Plants. FRONTIERS IN PLANT SCIENCE 2021; 12:614072. [PMID: 33584771 PMCID: PMC7876083 DOI: 10.3389/fpls.2021.614072] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 01/08/2021] [Indexed: 05/08/2023]
Abstract
The formation of adventitious roots (ARs) is an ecologically and economically important developmental process in plants. The evolution of AR systems is an important way for plants to cope with various environmental stresses. This review focuses on identified genes that have known to regulate the induction and initiation of ARs and offers an analysis of this process at the molecular level. The critical genes involved in adventitious rooting are the auxin signaling-responsive genes, including the AUXIN RESPONSE FACTOR (ARF) and the LATERAL ORGAN BOUNDARIES-DOMAIN (LOB) gene families, and genes associated with auxin transport and homeostasis, the quiescent center (QC) maintenance, and the root apical meristem (RAM) initiation. Several genes involved in cell wall modulation are also known to be involved in the regulation of adventitious rooting. Furthermore, the molecular processes that play roles in the ethylene, cytokinin, and jasmonic acid signaling pathways and their crosstalk modulate the generation of ARs. The crosstalk and interaction among many molecular processes generates complex networks that regulate AR generation.
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Bannoud F, Bellini C. Adventitious Rooting in Populus Species: Update and Perspectives. FRONTIERS IN PLANT SCIENCE 2021; 12:668837. [PMID: 34093625 PMCID: PMC8174304 DOI: 10.3389/fpls.2021.668837] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/26/2021] [Indexed: 05/11/2023]
Abstract
Populus spp. are among the most economically important species worldwide. These trees are used not only for wood and fiber production, but also in the rehabilitation of degraded lands. Since they are clonally propagated, the ability of stem cuttings to form adventitious roots is a critical point for plant establishment and survival in the field, and consequently for the forest industry. Adventitious rooting in different Populus clones has been an agronomic trait targeted in breeding programs for many years, and many factors have been identified that affect this quantitative trait. A huge variation in the rooting capacity has been observed among the species in the Populus genus, and the responses to some of the factors affecting this trait have been shown to be genotype-dependent. This review analyses similarities and differences between results obtained from studies examining the role of internal and external factors affecting rooting of Populus species cuttings. Since rooting is the most important requirement for stand establishment in clonally propagated species, understanding the physiological and genetic mechanisms that promote this trait is essential for successful commercial deployment.
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Affiliation(s)
- Florencia Bannoud
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
- *Correspondence: Florencia Bannoud,
| | - Catherine Bellini
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, Université Paris-Saclay, Versailles, France
- Catherine Bellini,
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Effect of Prohydrojasmon on the Growth of Eggplant and Komatsuna. PLANTS 2020; 9:plants9101368. [PMID: 33076375 PMCID: PMC7602559 DOI: 10.3390/plants9101368] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/13/2020] [Accepted: 10/13/2020] [Indexed: 01/06/2023]
Abstract
Prohydrojasmon (PDJ) can improve the polyphenol and anthocyanin content and antioxidant activity of some crop plants, but it also shows a suppressive effect on the plant growth. This study aimed to investigate the inhibitory effect of PDJ on the growth of two crop plants: komatsuna (Brassica rapa var. periviridis) and eggplant (Solanum melongena). We applied various concentrations of PDJ drip-wise or by spraying to eggplant and komatsuna seedlings and made detailed observations of growth. In general, no significant suppressive effect of PDJ was observed in the aerial parts in both plants. However, a significant inhibitory effect was found in roots treated with PDJ at concentrations of 600 and 1000 ppm. Interestingly, komatsuna treated with PDJ at a concentration of 200 ppm in both approaches resulted in a significant increase in root weight up to 37%. At a concentration range of 200–400 ppm, PDJ showed no inhibitory effects, and in some cases slightly promoted root growth. Therefore, this could be the recommended concentration range. We conclude that application of PDJ can still be beneficial to the vegetable crops without causing serious inhibition or suppression effects on the growth, as long as it is kept at rather low concentrations.
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Li A, Lakshmanan P, He W, Tan H, Liu L, Liu H, Liu J, Huang D, Chen Z. Transcriptome Profiling Provides Molecular Insights into Auxin-Induced Adventitious Root Formation in Sugarcane ( Saccharum spp. Interspecific Hybrids) Microshoots. PLANTS 2020; 9:plants9080931. [PMID: 32717893 PMCID: PMC7465322 DOI: 10.3390/plants9080931] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 06/30/2020] [Accepted: 07/19/2020] [Indexed: 11/16/2022]
Abstract
Adventitious root (AR) formation was enhanced following the treatment of sugarcane microshoots with indole-3-butyric acid (IBA) and 1-naphthalene acetic acid (NAA) combined, suggesting that auxin is a positive regulator of sugarcane microshoot AR formation. The transcriptome profile identified 1737 and 1268 differentially expressed genes (DEGs) in the basal tissues (5 mm) of sugarcane microshoots treated with IBA+NAA compared to nontreated control on the 3rd and 7th days post-auxin or water treatment (days post-treatment—dpt), respectively. To understand the molecular changes, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed. This analysis showed that DEGs associated with the pathways were associated with plant hormone signaling, flavonoid and phenylpropanoid biosyntheses, cell cycle, and cell wall modification, and transcription factors could be involved in sugarcane microshoot AR formation. Furthermore, qRT–PCR analysis was used to validate the expression patterns of nine genes associated with root formation and growth, and the results were consistent with the RNA-seq results. Finally, a hypothetical hormonal regulatory working model of sugarcane microshoot AR formation is proposed. Our results provide valuable insights into the molecular processes associated with auxin-induced AR formation in sugarcane.
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Affiliation(s)
- Aomei Li
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China; (A.L.); (P.L.); (L.L.); (H.L.); (J.L.); (D.H.); (Z.C.)
| | - Prakash Lakshmanan
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China; (A.L.); (P.L.); (L.L.); (H.L.); (J.L.); (D.H.); (Z.C.)
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin (CAGD), College of Resources and Environment, Southwest University, Chongqing 400715, China
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia 4072, QLD, Australia
| | - Weizhong He
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China; (A.L.); (P.L.); (L.L.); (H.L.); (J.L.); (D.H.); (Z.C.)
- Correspondence: (W.H.); (H.T.)
| | - Hongwei Tan
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China; (A.L.); (P.L.); (L.L.); (H.L.); (J.L.); (D.H.); (Z.C.)
- Correspondence: (W.H.); (H.T.)
| | - Limin Liu
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China; (A.L.); (P.L.); (L.L.); (H.L.); (J.L.); (D.H.); (Z.C.)
| | - Hongjian Liu
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China; (A.L.); (P.L.); (L.L.); (H.L.); (J.L.); (D.H.); (Z.C.)
| | - Junxian Liu
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China; (A.L.); (P.L.); (L.L.); (H.L.); (J.L.); (D.H.); (Z.C.)
| | - Dongliang Huang
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China; (A.L.); (P.L.); (L.L.); (H.L.); (J.L.); (D.H.); (Z.C.)
| | - Zhongliang Chen
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China; (A.L.); (P.L.); (L.L.); (H.L.); (J.L.); (D.H.); (Z.C.)
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Huang A, Wang Y, Liu Y, Wang G, She X. Reactive oxygen species regulate auxin levels to mediate adventitious root induction in Arabidopsis hypocotyl cuttings. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:912-926. [PMID: 31490027 DOI: 10.1111/jipb.12870] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 08/30/2019] [Indexed: 06/10/2023]
Abstract
Adventitious root (AR) formation from leafy stem cuttings is critical for breeding of many forest and horticultural species. In addition to the plant hormone auxin, wound-induced signaling caused by the cutting excision is also essential for AR initiation. Here we found that reactive oxygen species (ROS) are rapidly generated at the excision site as a wound-induced signal and propagated throughout the hypocotyl cutting after excision of the Arabidopsis (Arabidopsis thaliana) primary root. ROS propagation was not observed in the presence of an NADPH oxidase inhibitor (diphenylene iodonium chloride) or in a knockout mutant of the NADPH oxidase gene respiratory burst oxidase homolog protein D (RBOHD). Respiratory burst oxidase homolog protein D was specifically upregulated in hypocotyl cuttings at 0.5 h post excision (hpe). Together, these data suggest that RBOHD mediates ROS propagation in hypocotyl cuttings. We also found that auxin levels increased significantly in the shoot apex at 5 hpe and at the base of the cutting at 6 hpe; these effects were blocked by treatment with ROS scavengers. Consistent with this, transcript levels of auxin biosynthesis and polar-transport genes generally increased between 1 to 6 hpe. Collectively, our results suggest that wound-induced ROS participate in AR induction through regulation of auxin biosynthesis and transport.
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Affiliation(s)
- Aixia Huang
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Yongshun Wang
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Yangyang Liu
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Guodong Wang
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Xiaoping She
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
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Comprehensive Analysis of the TIFY Gene Family and Its Expression Profiles under Phytohormone Treatment and Abiotic Stresses in Roots of Populus trichocarpa. FORESTS 2020. [DOI: 10.3390/f11030315] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The TIFY gene family is specific to land plants, exerting immense influence on plant growth and development as well as responses to biotic and abiotic stresses. Here, we identify 25 TIFY genes in the poplar (Populus trichocarpa) genome. Phylogenetic tree analysis revealed these PtrTIFY genes were divided into four subfamilies within two groups. Promoter cis-element analysis indicated most PtrTIFY genes possess stress- and phytohormone-related cis-elements. Quantitative real-time reverse transcription polymerase chain reaction (qRT–PCR) analysis showed that PtrTIFY genes displayed different expression patterns in roots under abscisic acid, methyl jasmonate, and salicylic acid treatments, and drought, heat, and cold stresses. The protein interaction network indicated that members of the PtrTIFY family may interact with COI1, MYC2/3, and NINJA. Our results provide important information and new insights into the evolution and functions of TIFY genes in P. trichocarpa.
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Jing T, Ardiansyah R, Xu Q, Xing Q, Müller-Xing R. Reprogramming of Cell Fate During Root Regeneration by Transcriptional and Epigenetic Networks. FRONTIERS IN PLANT SCIENCE 2020; 11:317. [PMID: 32269581 PMCID: PMC7112134 DOI: 10.3389/fpls.2020.00317] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 03/04/2020] [Indexed: 05/18/2023]
Abstract
Many plant species are able to regenerate adventitious roots either directly from aerial organs such as leaves or stems, in particularly after detachment (cutting), or indirectly, from over-proliferating tissue termed callus. In agriculture, this capacity of de novo root formation from cuttings can be used to clonally propagate several important crop plants including cassava, potato, sugar cane, banana and various fruit or timber trees. Direct and indirect de novo root regeneration (DNRR) originates from pluripotent cells of the pericycle tissue, from other root-competent cells or from non-root-competent cells that first dedifferentiate. Independently of their origin, the cells convert into root founder cells, which go through proliferation and differentiation subsequently forming functional root meristems, root primordia and the complete root. Recent studies in the model plants Arabidopsis thaliana and rice have identified several key regulators building in response to the phytohormone auxin transcriptional networks that are involved in both callus formation and DNRR. In both cases, epigenetic regulation seems essential for the dynamic reprogramming of cell fate, which is correlated with local and global changes of the chromatin states that might ensure the correct spatiotemporal expression pattern of the key regulators. Future approaches might investigate in greater detail whether and how the transcriptional key regulators and the writers, erasers, and readers of epigenetic modifications interact to control DNRR.
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Affiliation(s)
- Tingting Jing
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- Institute of Development, College of Life Science, Northeast Forestry University, Harbin, China
| | - Rhomi Ardiansyah
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- Institute of Genetics, College of Life Science, Northeast Forestry University, Harbin, China
| | - Qijiang Xu
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- Institute of Development, College of Life Science, Northeast Forestry University, Harbin, China
| | - Qian Xing
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- Institute of Development, College of Life Science, Northeast Forestry University, Harbin, China
- *Correspondence: Qian Xing,
| | - Ralf Müller-Xing
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- Institute of Genetics, College of Life Science, Northeast Forestry University, Harbin, China
- Ralf Müller-Xing, ;
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Lakehal A, Ranjan A, Bellini C. Multiple Roles of Jasmonates in Shaping Rhizotaxis: Emerging Integrators. Methods Mol Biol 2020; 2085:3-22. [PMID: 31734913 DOI: 10.1007/978-1-0716-0142-6_1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The root system and its architecture enormously contribute to plant survival and adaptation to the environment. Depending on the intrinsic genetic information and the surrounding rhizosphere, plants develop a highly plastic root system, which is a critical determinant for survival. Plant root system, which includes primary root (PR), lateral roots (LR) and adventitious roots (AR), is shaped by tightly controlled developmental programs. Phytohormones are the main signaling components that orchestrate and coordinate the genetic information and the external stimuli to shape the root system patterning or rhizotaxis. Besides their role in plant stress responses and defense against herbivory and pathogen attacks, jasmonic acid and its derivatives, including the receptor-active conjugate jasmonoyl-L-isoleucine (JA-Ile), emerge as potential regulators of rhizotaxis. In this chapter, we summarize and discuss the recent progress achieved during the recent years to understand the JA-mediated genetic and molecular networks guiding PR, LR, and AR initiation. We highlight the role of JAs as critical integrators in shaping rhizotaxis.
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Affiliation(s)
- Abdellah Lakehal
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden.
| | - Alok Ranjan
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden
| | - Catherine Bellini
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden. .,Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, Versailles, France.
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Yang B, Chen M, Wang T, Chen X, Li Y, Wang X, Zhu W, Xia L, Hu X, Tian J. A metabolomic strategy revealed the role of JA and SA balance in Clematis terniflora DC. Response to UVB radiation and dark. PHYSIOLOGIA PLANTARUM 2019; 167:232-249. [PMID: 30467852 DOI: 10.1111/ppl.12883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 11/18/2018] [Accepted: 11/19/2018] [Indexed: 06/09/2023]
Abstract
Clematis terniflora DC. is a valuable resource with potential high pharmaceutical value. Proteomic, transcriptomic and metabolomic analyses of C. terniflora that has been exposed to high levels of UVB irradiation and dark conditions (HUVB + D) have revealed the mechanisms underlying its medicinal potential. However, the signal transduction pathways and the mechanisms of regulation for the accumulation of secondary metabolites remain unclear. In this study, we show that the jasmonic acid (JA) and salicylic acid (SA) signals were activated in C. terniflora in response to HUVB + D. Metabolomic analysis demonstrated that the perturbation in JA and SA balance led to additional reallocation of carbon and nitrogen resources. Evaluating the fold change ratios of differentially changed metabolites proved that JA signal enhanced the transformation of nitrogen to carbon through the 4-aminobutyric acid (GABA) shunt pathway, which increased the carbon reserve to be utilized in the production of secondary metabolites. However, SA signal induced the synthesis of proline, while avoiding the accumulation of secondary metabolites. Over all, the results indicate that the co-increase of JA and SA reconstructed the dynamic stability of transformation from nitrogen to carbon, which effectively enhanced the oxidative defense to HUVB + D in C. terniflora by increasing the secondary metabolites.
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Affiliation(s)
- Bingxian Yang
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China
| | - Meng Chen
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China
| | - Tantan Wang
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China
| | - Xi Chen
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China
| | - Yaohan Li
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China
| | - Xin Wang
- College of Agronomy & Biotechnology, China Agricultural University, Beijing, China
| | - Wei Zhu
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China
| | - Li'an Xia
- Benxi Hi-tech Industrial Development Zone, Benxi, China
| | - Xingjiang Hu
- Research Center for Clinical Pharmacy, First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Jingkui Tian
- College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China
- Education Ministry Key Laboratory for Biomedical Engineering, Zhejiang University, Hangzhou, China
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Lakehal A, Dob A, Novák O, Bellini C. A DAO1-Mediated Circuit Controls Auxin and Jasmonate Crosstalk Robustness during Adventitious Root Initiation in Arabidopsis. Int J Mol Sci 2019; 20:E4428. [PMID: 31505771 PMCID: PMC6769753 DOI: 10.3390/ijms20184428] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/31/2019] [Accepted: 09/06/2019] [Indexed: 11/16/2022] Open
Abstract
Adventitious rooting is a post-embryonic developmental program governed by a multitude of endogenous and environmental cues. Auxin, along with other phytohormones, integrates and translates these cues into precise molecular signatures to provide a coherent developmental output. Auxin signaling guides every step of adventitious root (AR) development from the early event of cell reprogramming and identity transitions until emergence. We have previously shown that auxin signaling controls the early events of AR initiation (ARI) by modulating the homeostasis of the negative regulator jasmonate (JA). Although considerable knowledge has been acquired about the role of auxin and JA in ARI, the genetic components acting downstream of JA signaling and the mechanistic basis controlling the interaction between these two hormones are not well understood. Here we provide evidence that COI1-dependent JA signaling controls the expression of DAO1 and its closely related paralog DAO2. In addition, we show that the dao1-1 loss of function mutant produces more ARs than the wild type, probably due to its deficiency in accumulating JA and its bioactive metabolite JA-Ile. Together, our data indicate that DAO1 controls a sensitive feedback circuit that stabilizes the auxin and JA crosstalk during ARI.
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Affiliation(s)
- Abdellah Lakehal
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90736 Umeå, Sweden
| | - Asma Dob
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90736 Umeå, Sweden
| | - Ondřej Novák
- Laboratory of Growth Regulators, Faculty of Science, Palacký University and Institute of Experimental Botany, The Czech Academy of Sciences, 78371 Olomouc, Czech Republic
- Umeå Plant Science Centre, Department of Forest Genetics and Physiology, Swedish Agriculture University, SE-90183 Umea, Sweden
| | - Catherine Bellini
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90736 Umeå, Sweden.
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, FR-78000 Versailles, France.
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Justamante MS, Acosta-Motos JR, Cano A, Villanova J, Birlanga V, Albacete A, Cano EÁ, Acosta M, Pérez-Pérez JM. Integration of Phenotype and Hormone Data during Adventitious Rooting in Carnation ( Dianthus caryophyllus L.) Stem Cuttings. PLANTS (BASEL, SWITZERLAND) 2019; 8:E226. [PMID: 31311180 PMCID: PMC6681402 DOI: 10.3390/plants8070226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/04/2019] [Accepted: 07/12/2019] [Indexed: 01/24/2023]
Abstract
The rooting of stem cuttings is a highly efficient procedure for the vegetative propagation of ornamental plants. In cultivated carnations, an increased auxin level in the stem cutting base produced by active auxin transport from the leaves triggers adventitious root (AR) formation from the cambium. To provide additional insight into the physiological and genetic basis of this complex trait, we studied AR formation in a collection of 159 F1 lines derived from a cross between two hybrid cultivars (2003 R 8 and 2101-02 MFR) showing contrasting rooting performances. In three different experiments, time-series for several stem and root architectural traits were quantified in detail in a subset of these double-cross hybrid lines displaying extreme rooting phenotypes and their parental genotypes. Our results indicate that the water content and area of the AR system directly contributed to the shoot water content and shoot growth. Moreover, morphometric data and rooting quality parameters were found to be associated with some stress-related metabolites such as 1-aminocyclopropane-1-carboxylic acid (ACC), the ethylene precursor, and the conjugated auxin indol-3-acetic acid-aspartic acid (IAA-Asp).
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Affiliation(s)
| | - José Ramón Acosta-Motos
- Universidad Católica San Antonio de Murcia, Campus de los Jerónimos, 30107 Guadalupe, Spain
- CEBAS-CSIC, Campus Universitario de Espinardo, 30100 Murcia, Spain
| | - Antonio Cano
- Departamento de Biología Vegetal, Universidad de Murcia, 30100 Murcia, Spain
| | - Joan Villanova
- Instituto de Bioingeniería, Universidad Miguel Hernández, 03202 Elche, Spain
| | - Virginia Birlanga
- Instituto de Bioingeniería, Universidad Miguel Hernández, 03202 Elche, Spain
| | - Alfonso Albacete
- CEBAS-CSIC, Campus Universitario de Espinardo, 30100 Murcia, Spain
| | | | - Manuel Acosta
- Departamento de Biología Vegetal, Universidad de Murcia, 30100 Murcia, Spain
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Druege U, Hilo A, Pérez-Pérez JM, Klopotek Y, Acosta M, Shahinnia F, Zerche S, Franken P, Hajirezaei MR. Molecular and physiological control of adventitious rooting in cuttings: phytohormone action meets resource allocation. ANNALS OF BOTANY 2019; 123:929-949. [PMID: 30759178 PMCID: PMC6589513 DOI: 10.1093/aob/mcy234] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 12/03/2018] [Indexed: 05/19/2023]
Abstract
BACKGROUND Adventitious root (AR) formation in excised plant parts is a bottleneck for survival of isolated plant fragments. AR formation plays an important ecological role and is a critical process in cuttings for the clonal propagation of horticultural and forestry crops. Therefore, understanding the regulation of excision-induced AR formation is essential for sustainable and efficient utilization of plant genetic resources. SCOPE Recent studies of plant transcriptomes, proteomes and metabolomes, and the use of mutants and transgenic lines have significantly expanded our knowledge concerning excision-induced AR formation. Here, we integrate new findings regarding AR formation in the cuttings of diverse plant species. These findings support a new system-oriented concept that the phytohormone-controlled reprogramming and differentiation of particular responsive cells in the cutting base interacts with a co-ordinated reallocation of plant resources within the whole cutting to initiate and drive excision-induced AR formation. Master control by auxin involves diverse transcription factors and mechanically sensitive microtubules, and is further linked to ethylene, jasmonates, cytokinins and strigolactones. Hormone functions seem to involve epigenetic factors and cross-talk with metabolic signals, reflecting the nutrient status of the cutting. By affecting distinct physiological units in the cutting, environmental factors such as light, nitrogen and iron modify the implementation of the genetically controlled root developmental programme. CONCLUSION Despite advanced research in the last decade, important questions remain open for future investigations on excision-induced AR formation. These concern the distinct roles and interactions of certain molecular, hormonal and metabolic factors, as well as the functional equilibrium of the whole cutting in a complex environment. Starting from model plants, cell type- and phase-specific monitoring of controlling processes and modification of gene expression are promising methodologies that, however, need to be integrated into a coherent model of the whole system, before research findings can be translated to other crops.
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Affiliation(s)
- Uwe Druege
- Leibniz Institute of Vegetable and Ornamental Crops, Erfurt, Germany
| | - Alexander Hilo
- Leibniz Institute of Plant Genetics and Crop Plant Research, OT Gatersleben, Stadt Seeland, Germany
| | | | - Yvonne Klopotek
- Leibniz Institute of Vegetable and Ornamental Crops, Erfurt, Germany
| | - Manuel Acosta
- Universidad de Murcia, Facultad de Biología, Campus de Espinardo, Murcia, Spain
| | - Fahimeh Shahinnia
- Leibniz Institute of Plant Genetics and Crop Plant Research, OT Gatersleben, Stadt Seeland, Germany
| | - Siegfried Zerche
- Leibniz Institute of Vegetable and Ornamental Crops, Erfurt, Germany
| | - Philipp Franken
- Leibniz Institute of Vegetable and Ornamental Crops, Erfurt, Germany
| | - Mohammad R Hajirezaei
- Leibniz Institute of Plant Genetics and Crop Plant Research, OT Gatersleben, Stadt Seeland, Germany
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Zhang G, Zhao F, Chen L, Pan Y, Sun L, Bao N, Zhang T, Cui CX, Qiu Z, Zhang Y, Yang L, Xu L. Jasmonate-mediated wound signalling promotes plant regeneration. NATURE PLANTS 2019; 5:491-497. [PMID: 31011153 DOI: 10.1038/s41477-019-0408-x] [Citation(s) in RCA: 148] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 03/15/2019] [Indexed: 05/21/2023]
Abstract
Wounding is the first event triggering regeneration1-4. However, the molecular basis of wound signalling pathways in plant regeneration is largely unclear. We previously established a method to study de novo root regeneration (DNRR) in Arabidopsis thaliana5,6, which provides a platform for analysing wounding. During DNRR, auxin is biosynthesized after leaf detachment and promotes cell fate transition to form the root primordium5-7. Here, we show that jasmonates (JAs) serve as a wound signal during DNRR. Within 2 h of leaf detachment, JA is produced in leaf explants and activates ETHYLENE RESPONSE FACTOR109 (ERF109). ERF109 upregulates ANTHRANILATE SYNTHASE α1 (ASA1)-a tryptophan biosynthesis gene in the auxin production pathway8-10-dependent on the pre-deposition of SET DOMAIN GROUP8 (SDG8)-mediated histone H3 lysine 36 trimethylation (H3K36me3)11 on the ASA1 locus. After 2 h, ERF109 activity is inhibited by direct interaction with JASMONATE-ZIM-DOMAIN (JAZ) proteins to prevent hypersensitivity to wounding. Our results suggest that a dynamic JA wave cooperates with histone methylation to upregulate a pulse of auxin production and promote DNRR in response to wounding.
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Affiliation(s)
- Guifang Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Fei Zhao
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lyuqin Chen
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, USA
| | - Yu Pan
- School of Life Sciences, Nantong University, Nantong, China
| | - Lijun Sun
- School of Life Sciences, Nantong University, Nantong, China
| | - Ning Bao
- School of Public Health, Nantong University, Nantong, China
| | - Teng Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Chun-Xiao Cui
- University of Chinese Academy of Sciences, Beijing, China
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Zaozao Qiu
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Yijing Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Li Yang
- Department of Plant Pathology, University of Georgia, Athens, GA, USA
| | - Lin Xu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China.
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Zhang Y, Xiao Z, Zhan C, Liu M, Xia W, Wang N. Comprehensive analysis of dynamic gene expression and investigation of the roles of hydrogen peroxide during adventitious rooting in poplar. BMC PLANT BIOLOGY 2019; 19:99. [PMID: 30866829 PMCID: PMC6416884 DOI: 10.1186/s12870-019-1700-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 03/06/2019] [Indexed: 05/15/2023]
Abstract
BACKGROUND Adventitious roots (ARs) are roots that are generated from nonrooting tissues. ARs are usually produced both during normal development and in response to stress conditions, such as flooding, nutrient deprivation, heavy metal stress and wounding. The ability of plants to form ARs is a key trait that enables plant propagation, especially for most tree species. RESULTS Here, the kinetics of AR formation in a tissue culture of a hybrid variety of poplar were investigated. AR formation mainly occurred during the first 8 days and both pre- and newly- formed primordia contributed to AR formation in poplar by histological study. RNA-Seq-based transcriptome analysis was performed for stem bases collected at 0, 2, 4, 6 and 8 days after excision (DAE). Based on the data, the expression patterns of 8 phytohormone-related genes were investigated, and their influences on AR formation were considered. Subsequent gene expression cluster analysis showed a number of biological processes involved in AR formation. Among these biological pathways, genes involved in H2O2 homeostasis showed enrichment in one cluster that was highly upregulated from DAE0 to DAE8. Pharmacological assay confirmed that an appropriate content of H2O2 in stem bases could accelerate the formation of ARs in poplar. CONCLUSIONS Based on the results of this study, we were able to predict a regulatory network for 7 phytohormones that are involved in poplar AR formation. The influence of H2O2 on AR formation was also confirmed. These results enhance our understanding of the regulation of AR formation in tree species.
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Affiliation(s)
- Yan Zhang
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070 China
| | - Zheng’ang Xiao
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070 China
| | - Chang Zhan
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070 China
| | - Meifeng Liu
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070 China
| | - Wenxiu Xia
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070 China
| | - Nian Wang
- College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070 China
- Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan, 430070 China
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Druege U, Franken P. Petunia as model for elucidating adventitious root formation and mycorrhizal symbiosis: at the nexus of physiology, genetics, microbiology and horticulture. PHYSIOLOGIA PLANTARUM 2019; 165:58-72. [PMID: 29774547 PMCID: PMC7380035 DOI: 10.1111/ppl.12762] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 05/03/2018] [Accepted: 05/14/2018] [Indexed: 05/23/2023]
Abstract
Adventitious root formation in cuttings and establishment of arbuscular mycorrhizal symbiosis reflect the enormous plasticity of plants and are key factors in the efficient and sustainable clonal propagation and production of ornamental crops. Based on the high importance of Petunia hybrida for the European and US annual bedding plant markets and its suitability as a model for basic plant sciences, petunia has been established as an experimental system for elucidating the molecular and physiological processes underlying adventitious root formation and mycorrhizal symbiosis. In the present review, we introduce the tools of the Petunia model system. Then, we discuss findings regarding the hormonal and metabolic control of adventitious rooting in the context of diverse environmental factors as well as findings on the function of arbuscular mycorrhiza related to nutrient uptake and resistance to root pathogens. Considering the recent publication of the genomes of the parental species of P. hybrida and other tools available in the petunia scientific community, we will outline the quality of petunia as a model for future system-oriented analysis of root development and function in the context of environmental and genetic control, which are at the heart of modern horticulture.
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Affiliation(s)
- Uwe Druege
- Leibniz Institute of Vegetable and Ornamental CropsErfurt99090Germany
| | - Philipp Franken
- Leibniz Institute of Vegetable and Ornamental CropsErfurt99090Germany
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Lakehal A, Bellini C. Control of adventitious root formation: insights into synergistic and antagonistic hormonal interactions. PHYSIOLOGIA PLANTARUM 2019; 165:90-100. [PMID: 30159890 DOI: 10.1111/ppl.12823] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 05/18/2023]
Abstract
Plants have evolved sophisticated root systems that help them to cope with harsh environmental conditions. They are typically composed of a primary root and lateral roots (LRs), but may also include adventitious roots (ARs). Unlike LRs, ARs may be initiated not only from pericycle cells, but from various cell types and tissues depending on the species. Phytohormones, together with many other internal and external stimuli, coordinate and guide every step of AR formation from the first event of cell reprogramming until emergence and outgrowth. In this review, we summarize recent advances in the molecular mechanisms controlling AR formation and highlight the main hormonal cross talk involved in its regulation under different conditions and in different model systems.
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Affiliation(s)
- Abdellah Lakehal
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90187 Umeå, Sweden
| | - Catherine Bellini
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90187 Umeå, Sweden
- Institut National de la Research Agronomic, UMR1318 INRA-AgroParisTech, Institut Jean-Pierre Bourgin, University of Paris-Sud, F-78000 Versailles, France
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Fattorini L, Hause B, Gutierrez L, Veloccia A, Della Rovere F, Piacentini D, Falasca G, Altamura MM. Jasmonate promotes auxin-induced adventitious rooting in dark-grown Arabidopsis thaliana seedlings and stem thin cell layers by a cross-talk with ethylene signalling and a modulation of xylogenesis. BMC PLANT BIOLOGY 2018; 18:182. [PMID: 30189848 PMCID: PMC6127917 DOI: 10.1186/s12870-018-1392-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 08/24/2018] [Indexed: 05/21/2023]
Abstract
BACKGROUND Adventitious roots (ARs) are often necessary for plant survival, and essential for successful micropropagation. In Arabidopsis thaliana dark-grown seedlings AR-formation occurs from the hypocotyl and is enhanced by application of indole-3-butyric acid (IBA) combined with kinetin (Kin). The same IBA + Kin-treatment induces AR-formation in thin cell layers (TCLs). Auxin is the main inducer of AR-formation and xylogenesis in numerous species and experimental systems. Xylogenesis is competitive to AR-formation in Arabidopsis hypocotyls and TCLs. Jasmonates (JAs) negatively affect AR-formation in de-etiolated Arabidopsis seedlings, but positively affect both AR-formation and xylogenesis in tobacco dark-grown IBA + Kin TCLs. In Arabidopsis the interplay between JAs and auxin in AR-formation vs xylogenesis needs investigation. In de-etiolated Arabidopsis seedlings, the Auxin Response Factors ARF6 and ARF8 positively regulate AR-formation and ARF17 negatively affects the process, but their role in xylogenesis is unknown. The cross-talk between auxin and ethylene (ET) is also important for AR-formation and xylogenesis, occurring through EIN3/EIL1 signalling pathway. EIN3/EIL1 is the direct link for JA and ET-signalling. The research investigated JA role on AR-formation and xylogenesis in Arabidopsis dark-grown seedlings and TCLs, and the relationship with ET and auxin. The JA-donor methyl-jasmonate (MeJA), and/or the ET precursor 1-aminocyclopropane-1-carboxylic acid were applied, and the response of mutants in JA-synthesis and -signalling, and ET-signalling investigated. Endogenous levels of auxin, JA and JA-related compounds, and ARF6, ARF8 and ARF17 expression were monitored. RESULTS MeJA, at 0.01 μM, enhances AR-formation, when combined with IBA + Kin, and the response of the early-JA-biosynthesis mutant dde2-2 and the JA-signalling mutant coi1-16 confirmed this result. JA levels early change during TCL-culture, and JA/JA-Ile is immunolocalized in AR-tips and xylogenic cells. The high AR-response of the late JA-biosynthesis mutant opr3 suggests a positive action also of 12-oxophytodienoic acid on AR-formation. The crosstalk between JA and ET-signalling by EIN3/EIL1 is critical for AR-formation, and involves a competitive modulation of xylogenesis. Xylogenesis is enhanced by a MeJA concentration repressing AR-formation, and is positively related to ARF17 expression. CONCLUSIONS The JA concentration-dependent role on AR-formation and xylogenesis, and the interaction with ET opens the way to applications in the micropropagation of recalcitrant species.
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Affiliation(s)
- Laura Fattorini
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma, P.le Aldo Moro 5, I-00185 Rome, Italy
| | - Bettina Hause
- Leibniz Institute of Plant Biochemistry, Department of Cell and Metabolic Biology, Weinberg 3, D06120, Halle (Saale), Germany
| | - Laurent Gutierrez
- CRRBM, SFR Condorcet FR CNRS 3417, Université de Picardie Jules Verne, Amiens, France
| | - Angela Veloccia
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma, P.le Aldo Moro 5, I-00185 Rome, Italy
| | - Federica Della Rovere
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma, P.le Aldo Moro 5, I-00185 Rome, Italy
| | - Diego Piacentini
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma, P.le Aldo Moro 5, I-00185 Rome, Italy
| | - Giuseppina Falasca
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma, P.le Aldo Moro 5, I-00185 Rome, Italy
| | - Maria Maddalena Altamura
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma, P.le Aldo Moro 5, I-00185 Rome, Italy
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Kim J, Yang R, Chang C, Park Y, Tucker ML. The root-knot nematode Meloidogyne incognita produces a functional mimic of the Arabidopsis INFLORESCENCE DEFICIENT IN ABSCISSION signaling peptide. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:3009-3021. [PMID: 29648636 PMCID: PMC5972575 DOI: 10.1093/jxb/ery135] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 03/27/2018] [Indexed: 05/12/2023]
Abstract
INFLORESCENCE DEFICIENT IN ABSCISSION (IDA) is a signaling peptide that regulates cell separation in Arabidopsis including floral organ abscission and lateral root emergence. IDA is highly conserved in dicotyledonous flowering plant genomes. IDA-like sequences were also found in the genomic sequences of root-knot nematodes, Meloidogyne spp., which are globally deleterious pathogens of agriculturally important plants, but the role of these genes is unknown. Exogenous treatment of the Arabidopsis ida mutant with synthetic peptide identical to the M. incognita IDA-like 1 (MiIDL1) protein sequence minus its N-terminal signal peptide recovered both the abscission and root architecture defects. Constitutive expression of the full-length MiIDL1 open reading frame in the ida mutant substantially recovered the delayed floral organ abscission phenotype whereas transformants expressing a construct missing the MiIDL1 signal peptide retained the delayed abscission phenotype. Importantly, wild-type Arabidopsis plants harboring an MiIDL1-RNAi construct and infected with nematodes had approximately 40% fewer galls per root than control plants. Thus, the MiIDL1 gene produces a functional IDA mimic that appears to play a role in successful gall development on Arabidopsis roots.
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Affiliation(s)
- Joonyup Kim
- Soybean Genomics and Improvement Laboratory, Agricultural Research Service, USDA, Beltsville, MD, USA
- Department of Cell Biology and Molecular Genetics, Bioscience Research Bldg, University of Maryland, MD, USA
- Life and Industry Convergence Research Institute, Department of Horticulture Bioscience, Pusan National University, Miryang, Republic of Korea
| | - Ronghui Yang
- Soybean Genomics and Improvement Laboratory, Agricultural Research Service, USDA, Beltsville, MD, USA
| | - Caren Chang
- Department of Cell Biology and Molecular Genetics, Bioscience Research Bldg, University of Maryland, MD, USA
| | - Younghoon Park
- Life and Industry Convergence Research Institute, Department of Horticulture Bioscience, Pusan National University, Miryang, Republic of Korea
| | - Mark L Tucker
- Soybean Genomics and Improvement Laboratory, Agricultural Research Service, USDA, Beltsville, MD, USA
- Correspondence:
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Yang X, Jansen MJ, Zhang Q, Sergeeva L, Ligterink W, Mariani C, Rieu I, Visser EJW. A disturbed auxin signaling affects adventitious root outgrowth in Solanum dulcamara under complete submergence. JOURNAL OF PLANT PHYSIOLOGY 2018; 224-225:11-18. [PMID: 29574325 DOI: 10.1016/j.jplph.2018.03.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 03/10/2018] [Accepted: 03/12/2018] [Indexed: 05/09/2023]
Abstract
Flooding negatively affects the growth and even survival of most terrestrial plants. Upon flooding, the excess water quickly decreases the gas exchange between atmosphere and the submerged plant tissues, which leads to oxygen deficiency resulting in a plant cell energy crisis, and eventually plant death. Solanum dulcamara survives flooding by producing aerenchymatous adventitious roots (ARs) from pre-formed primordia on the stem, which replace the original flood-sensitive root system. However, we found that under complete submergence, AR outgrowth was impaired in S. dulcamara. In the present work, we tried to elucidate the mechanisms behind this phenomenon in particular the involvement of the phytohormones auxin, abscisic acid and jasmonic acid. Abscisic acid (ABA) is a negative regulator of AR outgrowth, but surprisingly the ABA content and signaling were decreased to a similar extent under both partial and complete submergence, suggesting that ABA might not be responsible for the difference in AR outgrowth. Auxin, which is necessary for AR outgrowth, was at similar concentrations in either partially or completely submerged primordia, but complete submergence resulted in a decrease of auxin signaling in the primordia. Application of 1-naphthaleneacetic acid (NAA) to completely submerged plants restored AR outgrowth, implying that auxin response in the rooting tissues of completely submerged plants was reduced. Furthermore, jasmonic acid (JA) concentrations did not differ between partial and complete submergence. To conclude, a disruption in the auxin signaling within S. dulcamara AR primordia may result in the abortion of AR outgrowth under complete submergence.
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Affiliation(s)
- Xinping Yang
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525AJ Nijmegen, the Netherlands.
| | - Martijn J Jansen
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525AJ Nijmegen, the Netherlands
| | - Qian Zhang
- Department of Experimental Plant Ecology, Institute for Water and Wetland Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525AJ Nijmegen, the Netherlands
| | - Lidiya Sergeeva
- Department of Plant Sciences, Wageningen University & Research, Droevendaalsesteeg 1, 6708PB Wageningen, the Netherlands
| | - Wilco Ligterink
- Department of Plant Sciences, Wageningen University & Research, Droevendaalsesteeg 1, 6708PB Wageningen, the Netherlands
| | - Celestina Mariani
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525AJ Nijmegen, the Netherlands
| | - Ivo Rieu
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525AJ Nijmegen, the Netherlands
| | - Eric J W Visser
- Department of Experimental Plant Ecology, Institute for Water and Wetland Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525AJ Nijmegen, the Netherlands
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Huang H, Liu B, Liu L, Song S. Jasmonate action in plant growth and development. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:1349-1359. [PMID: 28158849 DOI: 10.1093/jxb/erw495] [Citation(s) in RCA: 310] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Phytohormones, including jasmonates (JAs), gibberellin, ethylene, abscisic acid, and auxin, integrate endogenous developmental cues with environmental signals to regulate plant growth, development, and defense. JAs are well- recognized lipid-derived stress hormones that regulate plant adaptations to biotic stresses, including herbivore attack and pathogen infection, as well as abiotic stresses, including wounding, ozone, and ultraviolet radiation. An increasing number of studies have shown that JAs also have functions in a remarkable number of plant developmental events, including primary root growth, reproductive development, and leaf senescence. Since the 1980s, details of the JA biosynthesis pathway, signaling pathway, and crosstalk during plant growth and development have been elucidated. Here, we summarize recent advances and give an updated overview of JA action and crosstalk in plant growth and development.
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Affiliation(s)
- Huang Huang
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Bei Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Liangyu Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Susheng Song
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal University, Beijing 100048, China
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Huang H, Gao H, Liu B, Qi T, Tong J, Xiao L, Xie D, Song S. Arabidopsis MYB24 Regulates Jasmonate-Mediated Stamen Development. FRONTIERS IN PLANT SCIENCE 2017; 8:1525. [PMID: 28928760 PMCID: PMC5591944 DOI: 10.3389/fpls.2017.01525] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 08/21/2017] [Indexed: 05/04/2023]
Abstract
The phytohormone jasmonates (JAs) regulate various defense responses and diverse developmental processes including stamen development and fertility. Previous studies showed that JA induces CORONATINE INSENSITIVE 1-mediated degradation of JA ZIM-domain (JAZ) proteins, and activates the MYB transcription factors (such as MYB21 and MYB24) to regulate stamen development. In this study, we further uncover the mechanism underlying how MYB24 interacts with JAZs to control JA-regulated stamen development. We show that N-terminus of MYB21/24 interacts with 10 out of 12 JAZ proteins while both N-terminus and C-terminus of MYB24 are involved in dimerization of MYB21 and MYB24. Interestingly, male sterility of the JA-deficient mutant opr3 can be rescued by suitable level of the MYB24 overexpression but not by excessive high level of MYB24. Surprisingly, overexpression of MYB24NT, but not MYB24CT, could cause male sterility. These results provide new insights on MYB factors in JA-regulated stamen development.
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Affiliation(s)
- Huang Huang
- School of Life Sciences, Tsinghua UniversityBeijing, China
- College of Biological Science and Engineering, Beijing University of AgricultureBeijing, China
| | - Hua Gao
- School of Life Sciences, Tsinghua UniversityBeijing, China
| | - Bei Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal UniversityBeijing, China
| | - Tiancong Qi
- School of Life Sciences, Tsinghua UniversityBeijing, China
| | - Jianhua Tong
- College of Bioscience and Biotechnology, Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural UniversityChangsha, China
| | - Langtao Xiao
- College of Bioscience and Biotechnology, Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural UniversityChangsha, China
| | - Daoxin Xie
- School of Life Sciences, Tsinghua UniversityBeijing, China
- *Correspondence: Daoxin Xie, Susheng Song,
| | - Susheng Song
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, College of Life Sciences, Capital Normal UniversityBeijing, China
- *Correspondence: Daoxin Xie, Susheng Song,
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Lup SD, Tian X, Xu J, Pérez-Pérez JM. Wound signaling of regenerative cell reprogramming. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2016; 250:178-187. [PMID: 27457994 DOI: 10.1016/j.plantsci.2016.06.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/13/2016] [Accepted: 06/17/2016] [Indexed: 05/08/2023]
Abstract
Plants are sessile organisms that must deal with various threats resulting in tissue damage, such as herbivore feeding, and physical wounding by wind, snow or crushing by animals. During wound healing, phytohormone crosstalk orchestrates cellular regeneration through the establishment of tissue-specific asymmetries. In turn, hormone-regulated transcription factors and their downstream targets coordinate cellular responses, including dedifferentiation, cell cycle reactivation and vascular regeneration. By comparing different examples of wound-induced tissue regeneration in the model plant Arabidopsis thaliana, a number of key regulators of developmental plasticity of plant cells have been identified. We present the relevance of these findings and of the dynamic establishment of differential auxin gradients for cell reprogramming after wounding.
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Affiliation(s)
- Samuel Daniel Lup
- Instituto de Bioingeniería, Universidad Miguel Hernández, Elche 03202, Alicante, Spain
| | - Xin Tian
- Department of Biological Sciences and NUS Centre for BioImaging Sciences, National University of Singapore, Singapore 117543, Singapore
| | - Jian Xu
- Department of Biological Sciences and NUS Centre for BioImaging Sciences, National University of Singapore, Singapore 117543, Singapore
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Lu M, Zhang Y, Tang S, Pan J, Yu Y, Han J, Li Y, Du X, Nan Z, Sun Q. AtCNGC2 is involved in jasmonic acid-induced calcium mobilization. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:809-19. [PMID: 26608645 DOI: 10.1093/jxb/erv500] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Calcium (Ca(2+)) mobilization is a central theme in various plant signal transduction pathways. We demonstrate that Arabidopsis thaliana cyclic nucleotide-gated channel 2 (AtCNGC2) is involved in jasmonic acid (JA)-induced apoplastic Ca(2+) influx in Arabidopsis epidermal cells. Ca(2+) imaging results showed that JA can induce an elevation in the cytosolic cAMP concentration ([cAMP]cyt), reaching a maximum within 3 min. Dibutyryl cAMP (db-cAMP), a cell membrane-permeable analogue of cAMP, induced an increase in the cytosolic Ca(2+) concentration ([Ca(2+)]cyt), with a peak at 4 min. This [Ca(2+)]cyt increase was triggered by the JA-induced increase in [cAMP]cyt. W-7[N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide], an antagonist of calmodulin, positively modulated the JA-induced increase in [Ca(2+)]cyt, while W-5[N-(6-aminohexyl)-1-naphthalenesulfonamide], an inactive antagonist of calmodulin, had no apparent effect. db-cAMP and JA positively induced the expression of primary (i.e. JAZ1 and MYC2) and secondary (i.e. VSP1) response genes in the JA signalling pathway in wild-type Arabidopsis thaliana, whereas they had no significant effect in the AtCNGC2 mutant 'defense, no death (dnd1) plants. These data provide evidence that JA first induces the elevation of cAMP, and cAMP, as an activating ligand, activates the AtCNGC2 channel, resulting in apoplastic Ca(2+) influx through AtCNGC2.
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Affiliation(s)
- Min Lu
- Plant Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
| | - Yanyan Zhang
- Plant Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
| | - Shikun Tang
- Plant Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
| | - Jinbao Pan
- Plant Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
| | - Yongkun Yu
- College of Biological Science and Engineering, Beijing University of Agriculture, Beijing 102206, China
| | - Jun Han
- Plant Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
| | - Yangyang Li
- Plant Science and Technology College, Beijing University of Agriculture, Beijing 102206, China School of Life Sciences, Shandong Normal University, Jinan 250014, China
| | - Xihua Du
- School of Life Sciences, Shandong Normal University, Jinan 250014, China
| | - Zhangjie Nan
- Plant Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
| | - Qingpeng Sun
- Plant Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
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Otto M, Naumann C, Brandt W, Wasternack C, Hause B. Activity Regulation by Heteromerization of Arabidopsis Allene Oxide Cyclase Family Members. PLANTS 2016; 5:plants5010003. [PMID: 27135223 PMCID: PMC4844422 DOI: 10.3390/plants5010003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 12/22/2015] [Accepted: 12/29/2015] [Indexed: 11/24/2022]
Abstract
Jasmonates (JAs) are lipid-derived signals in plant stress responses and development. A crucial step in JA biosynthesis is catalyzed by allene oxide cyclase (AOC). Four genes encoding functional AOCs (AOC1, AOC2, AOC3 and AOC4) have been characterized for Arabidopsis thaliana in terms of organ- and tissue-specific expression, mutant phenotypes, promoter activities and initial in vivo protein interaction studies suggesting functional redundancy and diversification, including first hints at enzyme activity control by protein-protein interaction. Here, these analyses were extended by detailed analysis of recombinant proteins produced in Escherichia coli. Treatment of purified AOC2 with SDS at different temperatures, chemical cross-linking experiments and protein structure analysis by molecular modelling approaches were performed. Several salt bridges between monomers and a hydrophobic core within the AOC2 trimer were identified and functionally proven by site-directed mutagenesis. The data obtained showed that AOC2 acts as a trimer. Finally, AOC activity was determined in heteromers formed by pairwise combinations of the four AOC isoforms. The highest activities were found for heteromers containing AOC4 + AOC1 and AOC4 + AOC2, respectively. All data are in line with an enzyme activity control of all four AOCs by heteromerization, thereby supporting a putative fine-tuning in JA formation by various regulatory principles.
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Affiliation(s)
- Markus Otto
- Department of Cell and Metabolic Biology, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany.
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany.
| | - Christin Naumann
- Department of Cell and Metabolic Biology, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany.
| | - Wolfgang Brandt
- Department of Natural Product Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany.
| | - Claus Wasternack
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany.
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany AS CR & Palacký University, Šlechtitelů 11, CZ-78371 Olomouc, Czech Republic.
| | - Bettina Hause
- Department of Cell and Metabolic Biology, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany.
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Druege U, Franken P, Hajirezaei MR. Plant Hormone Homeostasis, Signaling, and Function during Adventitious Root Formation in Cuttings. FRONTIERS IN PLANT SCIENCE 2016; 7:381. [PMID: 27064322 PMCID: PMC4814496 DOI: 10.3389/fpls.2016.00381] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 03/13/2016] [Indexed: 04/14/2023]
Abstract
Adventitious root (AR) formation in cuttings is a multiphase developmental process, resulting from wounding at the cutting site and isolation from the resource and signal network of the whole plant. Though, promotive effects of auxins are widely used for clonal plant propagation, the regulation and function of plant hormones and their intricate signaling networks during AR formation in cuttings are poorly understood. In this focused review, we discuss our recent publications on the involvement of polar auxin transport (PAT) and transcriptional regulation of auxin and ethylene action during AR formation in petunia cuttings in a broad context. Integrating new findings on cuttings of other plant species and general models on plant hormone networks, a model on the regulation and function of auxin, ethylene, and jasmonate in AR formation of cuttings is presented. PAT and cutting off from the basipetal auxin drain are considered as initial principles generating early accumulation of IAA in the rooting zone. This is expected to trigger a self-regulatory process of auxin canalization and maximization to responding target cells, there inducing the program of AR formation. Regulation of auxin homeostasis via auxin influx and efflux carriers, GH3 proteins and peroxidases, of flavonoid metabolism, and of auxin signaling via AUX/IAA proteins, TOPLESS, ARFs, and SAUR-like proteins are postulated as key processes determining the different phases of AR formation. NO and H2O2 mediate auxin signaling via the cGMP and MAPK cascades. Transcription factors of the GRAS-, AP2/ERF-, and WOX-families link auxin signaling to cell fate specification. Cyclin-mediated governing of the cell cycle, modifications of sugar metabolism and microtubule and cell wall remodeling are considered as important implementation processes of auxin function. Induced by the initial wounding and other abiotic stress factors, up-regulation of ethylene biosynthesis, and signaling via ERFs and early accumulation of jasmonic acid stimulate AR formation, while both pathways are linked to auxin. Future research on the function of candidate genes should consider their tissue-specific role and regulation by environmental factors. Furthermore, the whole cutting should be regarded as a system of physiological units with diverse functions specifically responding to the environment and determining the rooting response.
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Affiliation(s)
- Uwe Druege
- Department Plant Propagation, Leibniz Institute of Vegetable and Ornamental CropsErfurt, Germany
- *Correspondence:
| | - Philipp Franken
- Department Plant Propagation, Leibniz Institute of Vegetable and Ornamental CropsErfurt, Germany
| | - Mohammad R. Hajirezaei
- Department of Molecular Plant Nutrition, Leibniz Institute of Plant Genetics and Crop Plant ResearchGatersleben, Germany
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