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Mishra P, Roggen A, Ljung K, Albani MC, Vayssières A. Adventitious rooting in response to long-term cold: a possible mechanism of clonal growth in alpine perennials. FRONTIERS IN PLANT SCIENCE 2024; 15:1352830. [PMID: 38693930 PMCID: PMC11062184 DOI: 10.3389/fpls.2024.1352830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 03/22/2024] [Indexed: 05/03/2024]
Abstract
Arctic alpine species experience extended periods of cold and unpredictable conditions during flowering. Thus, often, alpine plants use both sexual and asexual means of reproduction to maximize fitness and ensure reproductive success. We used the arctic alpine perennial Arabis alpina to explore the role of prolonged cold exposure on adventitious rooting. We exposed plants to 4°C for different durations and scored the presence of adventitious roots on the main stem and axillary branches. Our physiological studies demonstrated the presence of adventitious roots after 21 weeks at 4°C saturating the effect of cold on this process. Notably, adventitious roots on the main stem developing in specific internodes allowed us to identify the gene regulatory network involved in the formation of adventitious roots in cold using transcriptomics. These data and histological studies indicated that adventitious roots in A. alpina stems initiate during cold exposure and emerge after plants experience growth promoting conditions. While the initiation of adventitious root was not associated with changes of DR5 auxin response and free endogenous auxin level in the stems, the emergence of the adventitious root primordia was. Using the transcriptomic data, we discerned the sequential hormone responses occurring in various stages of adventitious root formation and identified supplementary pathways putatively involved in adventitious root emergence, such as glucosinolate metabolism. Together, our results highlight the role of low temperature during clonal growth in alpine plants and provide insights on the molecular mechanisms involved at distinct stages of adventitious rooting.
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Affiliation(s)
- Priyanka Mishra
- Institute for Plant Sciences, University of Cologne, Cologne, Germany
- Cluster of Excellence on Plant Sciences, “SMART Plants for Tomorrow’s Needs,” Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
- Max Planck Institute for Plant Breeding Research, Cologne, Germany
- Department of Botany, Faculty of Science, University of Allahabad, Prayagraj, India
| | - Adrian Roggen
- Institute for Plant Sciences, University of Cologne, Cologne, Germany
- Cluster of Excellence on Plant Sciences, “SMART Plants for Tomorrow’s Needs,” Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
- Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Karin Ljung
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Maria C. Albani
- Institute for Plant Sciences, University of Cologne, Cologne, Germany
- Cluster of Excellence on Plant Sciences, “SMART Plants for Tomorrow’s Needs,” Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
- Max Planck Institute for Plant Breeding Research, Cologne, Germany
- Rijk Zwaan, De Lier, Netherlands
| | - Alice Vayssières
- Institute for Plant Sciences, University of Cologne, Cologne, Germany
- Cluster of Excellence on Plant Sciences, “SMART Plants for Tomorrow’s Needs,” Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
- Max Planck Institute for Plant Breeding Research, Cologne, Germany
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
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2
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Zeng Y, Verstraeten I, Trinh HK, Lardon R, Schotte S, Olatunji D, Heugebaert T, Stevens C, Quareshy M, Napier R, Nastasi SP, Costa A, De Rybel B, Bellini C, Beeckman T, Vanneste S, Geelen D. Chemical induction of hypocotyl rooting reveals extensive conservation of auxin signalling controlling lateral and adventitious root formation. THE NEW PHYTOLOGIST 2023; 240:1883-1899. [PMID: 37787103 DOI: 10.1111/nph.19292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 08/19/2023] [Indexed: 10/04/2023]
Abstract
Upon exposure to light, etiolated Arabidopsis seedlings form adventitious roots (AR) along the hypocotyl. While processes underlying lateral root formation are studied intensively, comparatively little is known about the molecular processes involved in the initiation of hypocotyl AR. AR and LR formation were studied using a small molecule named Hypocotyl Specific Adventitious Root INducer (HYSPARIN) that strongly induces AR but not LR formation. HYSPARIN does not trigger rapid DR5-reporter activation, DII-Venus degradation or Ca2+ signalling. Transcriptome analysis, auxin signalling reporter lines and mutants show that HYSPARIN AR induction involves nuclear TIR1/AFB and plasma membrane TMK auxin signalling, as well as multiple downstream LR development genes (SHY2/IAA3, PUCHI, MAKR4 and GATA23). Comparison of the AR and LR induction transcriptome identified SAURs, AGC kinases and OFP transcription factors as specifically upregulated by HYSPARIN. Members of the SAUR19 subfamily, OFP4 and AGC2 suppress HYS-induced AR formation. While SAUR19 and OFP subfamily members also mildly modulate LR formation, AGC2 regulates only AR induction. Analysis of HYSPARIN-induced AR formation uncovers an evolutionary conservation of auxin signalling controlling LR and AR induction in Arabidopsis seedlings and identifies SAUR19, OFP4 and AGC2 kinase as novel regulators of AR formation.
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Affiliation(s)
- Yinwei Zeng
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Inge Verstraeten
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Hoang Khai Trinh
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
- Institute of Food and Biotechnology, Can Tho University, 900000, Can Tho City, Vietnam
| | - Robin Lardon
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Sebastien Schotte
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Damilola Olatunji
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Thomas Heugebaert
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - Christian Stevens
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - Mussa Quareshy
- School of Life Sciences, University of Warwick, Coventry, CV4 7AL, UK
| | - Richard Napier
- School of Life Sciences, University of Warwick, Coventry, CV4 7AL, UK
| | - Sara Paola Nastasi
- Department of Biosciences, University of Milan, via Celoria 26, 20133, Milan, Italy
| | - Alex Costa
- Department of Biosciences, University of Milan, via Celoria 26, 20133, Milan, Italy
- Institute of Biophysics, National Research Council of Italy (CNR), 20133, Milan, Italy
| | - Bert De Rybel
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Centre for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Catherine Bellini
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, SE-90736, Umeå, Sweden
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000, Versailles, France
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Centre for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Steffen Vanneste
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
| | - Danny Geelen
- Horticell, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium
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Liu K, Zhao Y, Zhao DG. Transcriptome analysis reveals the effect of acidic environment on adventitious root differentiation in Camellia sinensis. PLANT MOLECULAR BIOLOGY 2023; 113:205-217. [PMID: 37973765 DOI: 10.1007/s11103-023-01383-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 09/26/2023] [Indexed: 11/19/2023]
Abstract
The generation of adventitious roots (ARs) is the key to the success of cuttings. The appropriate environment for AR differentiation in tea plants is acidic. However, the mechanism is unclear. In this study, pH 4.5 was suitable condition for the differentiation of AR in tea plants. At the base of cuttings, the root primordia differentiated ARs more rapidly at pH 4.5 than pH 7.0, and nine AR differentiation-related genes were found to be differentially expressed in 30 days, the result was also validated by qRT-PCR. The promoter regions of these genes contained auxin and brassinosteroid response elements. The expression levels of several genes which were involved in auxin and brassinosteroid synthesis as well as signaling at pH 4.5 compared to pH 7.0 occurred differential expression. Brassinolide (BL) and indole-3-acetic acid (IAA) could affect the differentiation of ARs under pH 4.5 and pH 7.0. By qRT-PCR analysis of genes during ARs generation, BL and IAA inhibited and promoted the expression of CsIAA14 gene, respectively, to regulate auxin signal transduction. Meanwhile, the expression levels of CsKNAT4, CsNAC2, CsNAC100, CsWRKY30 and CsLBD18 genes were up-regulated upon auxin treatment and were positively correlated with ARs differentiation.This study showed that pH 4.5 was the most suitable environment for the root primordia differentiation of AR in tea plant. Proper acidic pH conditions promoted auxin synthesis and signal transduction. The auxin initiated the expression of AR differentiation-related genes, and promoted its differentiated. BL was involved in ARs formation and elongation by regulating auxin signal transduction.
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Affiliation(s)
- Kai Liu
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-Bioengineering/College of Tea Sciences, Guizhou University, Guiyang, 550025, China
| | - Yichen Zhao
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-Bioengineering/College of Tea Sciences, Guizhou University, Guiyang, 550025, China.
| | - De-Gang Zhao
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-Bioengineering/College of Tea Sciences, Guizhou University, Guiyang, 550025, China.
- Plant Conservation Technology Center, Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang, 550006, China.
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Fu H, Wei X, Chen Q, Yong S, Liu Q, Dang J, Wu D, Liang G, Guo Q. Comparative transcriptome analysis of molecular mechanisms underlying adventitious root developments in Huangshan Bitter tea ( Camellia gymnogyna Chang) under red light quality. FRONTIERS IN PLANT SCIENCE 2023; 14:1154169. [PMID: 37025148 PMCID: PMC10070859 DOI: 10.3389/fpls.2023.1154169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 02/27/2023] [Indexed: 06/19/2023]
Abstract
As the formation of adventitious roots (AR) is an important component of in vitro regeneration of tea plants, the propagation and preservation of Huangshan Bitter tea (Camellia gymnogyna Chang) cuttings have been hindered due to its lower rooting rate. As light is a crucial environmental factor that affects AR formation, this study aimed to investigate the special role of red light (RL) in the formation of AR in Huangshan Bitter tea plants, which has not been well understood. Huangshan Bitter tea plants were induced with white light (control, WL) and red light (660 nm, RL) qualities 36 days after induced treatment (DAI) to investigate dynamic AR formation and development, anatomical observation, hormones content change, and weighted gene co-expression network analysis (WGCNA) of the transcriptome. Results showed that RL promoted the rooting rate and root characteristics compared to WL. Anatomical observations demonstrated that root primordium was induced earlier by RL at the 4 DAI. RL positively affected IAA, ZT and GA3 content and negatively influenced ABA from the 4 to 16 DAI. RNA-seq and analysis of differential expression genes (DEGs) exhibited extensive variation in gene expression profiles between RL and WL. Meanwhile, the results of WGCNA and correlation analysis identified three highly correlated modules and hub genes mainly participated in 'response to hormone', 'cellular glucan metabolic progress', and 'response to auxin'. Furthermore, the proportion of transcription factors (TFs) such as ethylene response factor (ERF), myeloblastosis (MYB), basic helix-loop-helix (bHLH), and WRKYGQK (WRKY) were the top four in DEGs. These results suggested that the AR-promoting potential of red light was due to complex hormone interactions in tea plants by regulating the expression of related genes. This study provided an important reference to shorten breeding cycles and accelerate superiority in tea plant propagation and preservation.
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Affiliation(s)
- Hao Fu
- Key Laboratory of Horticulture Science for Southern Mountains Regions of Ministry of Education, College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Academy of Agricultural Sciences of Southwest University, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Chongqing, China
| | - Xu Wei
- Citrus Research and Education Center, University of Florida, Lake Alfred, FL, United States
| | - Qian Chen
- Key Laboratory of Horticulture Science for Southern Mountains Regions of Ministry of Education, College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Academy of Agricultural Sciences of Southwest University, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Chongqing, China
| | - Shunyuan Yong
- Key Laboratory of Horticulture Science for Southern Mountains Regions of Ministry of Education, College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Academy of Agricultural Sciences of Southwest University, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Chongqing, China
| | - Qinjin Liu
- Chongqing Institute of Ancient Tea Plant and Product, Chongqing, China
| | - Jiangbo Dang
- Key Laboratory of Horticulture Science for Southern Mountains Regions of Ministry of Education, College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Academy of Agricultural Sciences of Southwest University, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Chongqing, China
- Chongqing Institute of Ancient Tea Plant and Product, Chongqing, China
| | - Di Wu
- Key Laboratory of Horticulture Science for Southern Mountains Regions of Ministry of Education, College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Academy of Agricultural Sciences of Southwest University, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Chongqing, China
- Chongqing Institute of Ancient Tea Plant and Product, Chongqing, China
| | - Guolu Liang
- Key Laboratory of Horticulture Science for Southern Mountains Regions of Ministry of Education, College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Academy of Agricultural Sciences of Southwest University, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Chongqing, China
- Chongqing Institute of Ancient Tea Plant and Product, Chongqing, China
| | - Qigao Guo
- Key Laboratory of Horticulture Science for Southern Mountains Regions of Ministry of Education, College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Academy of Agricultural Sciences of Southwest University, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land, Chongqing, China
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5
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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: 21] [Impact Index Per Article: 7.0] [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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Zhao D, Wang Y, Feng C, Wei Y, Peng X, Guo X, Guo X, Zhai Z, Li J, Shen X, Li T. Overexpression of MsGH3.5 inhibits shoot and root development through the auxin and cytokinin pathways in apple plants. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:166-183. [PMID: 32031710 DOI: 10.1111/tpj.14717] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 01/17/2020] [Accepted: 01/24/2020] [Indexed: 06/10/2023]
Abstract
Phytohormonal interactions are crucial for plant development. Auxin and cytokinin (CK) both play critical roles in regulating plant growth and development; however, the interaction between these two phytohormones is complex and not fully understood. Here, we isolated a wild apple (Malus sieversii Roem) GRETCHEN HAGEN3 (GH3) gene, MsGH3.5, encoding an indole-3-acetic acid (IAA)-amido synthetase. Overexpression of MsGH3.5 significantly reduced the free IAA content and increased the content of some IAA-amino acid conjugates, and MsGH3.5-overexpressing lines were dwarfed and produced fewer adventitious roots (ARs) than the control. This phenotype is consistent with the role of GH3 in conjugating excess free active IAA to amino acids in auxin homeostasis. Surprisingly, overexpression of MsGH3.5 significantly increased CK concentrations in the whole plant, and altered the expression of genes involved in CK biosynthesis, metabolism and signaling. Furthermore, exogenous CK application induced MsGH3.5 expression through the activity of the CK type-B response regulator, MsRR1a, which mediates the CK primary response. MsRR1a activated MsGH3.5 expression by directly binding to its promoter, linking auxin and CK signaling. Plants overexpressing MsRR1a also displayed fewer ARs, in agreement with the regulation of MsGH3.5 expression by MsRR1a. Taken together, we reveal that MsGH3.5 affects apple growth and development by modulating auxin and CK levels and signaling pathways. These findings provide insight into the interaction between the auxin and CK pathways, and might have substantial implications for efforts to improve apple architecture.
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Affiliation(s)
- Di Zhao
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yantao Wang
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Chen Feng
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yan Wei
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xiang Peng
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xiao Guo
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xinwei Guo
- The Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing, 100193, China
| | - Zefeng Zhai
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Jian Li
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xiaoshuai Shen
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Tianhong Li
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
- Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, 102206, China
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Lakehal A, Chaabouni S, Cavel E, Le Hir R, Ranjan A, Raneshan Z, Novák O, Păcurar DI, Perrone I, Jobert F, Gutierrez L, Bakò L, Bellini C. A Molecular Framework for the Control of Adventitious Rooting by TIR1/AFB2-Aux/IAA-Dependent Auxin Signaling in Arabidopsis. MOLECULAR PLANT 2019; 12:1499-1514. [PMID: 31520787 DOI: 10.1016/j.molp.2019.09.001] [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: 04/15/2019] [Revised: 08/20/2019] [Accepted: 09/03/2019] [Indexed: 05/13/2023]
Abstract
In Arabidopsis thaliana, canonical auxin-dependent gene regulation is mediated by 23 transcription factors from the AUXIN RESPONSE FACTOR (ARF) family that interact with auxin/indole acetic acid repressors (Aux/IAAs), which themselves form co-receptor complexes with one of six TRANSPORT INHIBITOR1/AUXIN-SIGNALLING F-BOX (TIR1/AFB) proteins. Different combinations of co-receptors drive specific sensing outputs, allowing auxin to control a myriad of processes. ARF6 and ARF8 are positive regulators of adventitious root initiation upstream of jasmonate, but the exact auxin co-receptor complexes controlling the transcriptional activity of these proteins has remained unknown. Here, using loss-of-function mutants we show that three Aux/IAA genes, IAA6, IAA9, and IAA17, act additively in the control of adventitious root (AR) initiation. These three IAA proteins interact with ARF6 and/or ARF8 and likely repress their activity in AR development. We show that TIR1 and AFB2 are positive regulators of AR formation and TIR1 plays a dual role in the control of jasmonic acid (JA) biosynthesis and conjugation, as several JA biosynthesis genes are up-regulated in the tir1-1 mutant. These results lead us to propose that in the presence of auxin, TIR1 and AFB2 form specific sensing complexes with IAA6, IAA9, and/or IAA17 to modulate JA homeostasis and control AR initiation.
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Affiliation(s)
- Abdellah Lakehal
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 90736 Umeå, Sweden
| | - Salma Chaabouni
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 90736 Umeå, Sweden
| | - Emilie Cavel
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 90736 Umeå, Sweden
| | - Rozenn Le Hir
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France
| | - Alok Ranjan
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 90736 Umeå, Sweden
| | - Zahra Raneshan
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 90736 Umeå, Sweden; Department of Biology, Faculty of Science, Shahid Bahonar University, Kerman, Iran
| | - 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, 90183 Umeå, Sweden
| | - Daniel I Păcurar
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 90736 Umeå, Sweden
| | - Irene Perrone
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 90736 Umeå, Sweden
| | - François Jobert
- Centre de Ressources Régionales en Biologie Moléculaire (CRRBM), Université de Picardie Jules Verne, 80039 Amiens, France
| | - Laurent Gutierrez
- Centre de Ressources Régionales en Biologie Moléculaire (CRRBM), Université de Picardie Jules Verne, 80039 Amiens, France
| | - Laszlo Bakò
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 90736 Umeå, Sweden
| | - Catherine Bellini
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 90736 Umeå, Sweden; Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France.
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A DAO1-Mediated Circuit Controls Auxin and Jasmonate Crosstalk Robustness during Adventitious Root Initiation in Arabidopsis. Int J Mol Sci 2019; 20:ijms20184428. [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] [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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Screening and evaluation of adventitious root lines of Panax notoginseng by morphology, gene expression, and metabolite profiles. Appl Microbiol Biotechnol 2019; 103:4405-4415. [DOI: 10.1007/s00253-019-09778-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 03/09/2019] [Accepted: 03/12/2019] [Indexed: 01/15/2023]
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10
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Ibáñez S, Ruiz-Cano H, Fernández MÁ, Sánchez-García AB, Villanova J, Micol JL, Pérez-Pérez JM. A Network-Guided Genetic Approach to Identify Novel Regulators of Adventitious Root Formation in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2019; 10:461. [PMID: 31057574 PMCID: PMC6478000 DOI: 10.3389/fpls.2019.00461] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 03/27/2019] [Indexed: 05/05/2023]
Abstract
Adventitious roots (ARs) are formed de novo during post-embryonic development from non-root tissues, in processes that are highly dependent on environmental inputs. Whole root excision from young seedlings has been previously used as a model to study adventitious root formation in Arabidopsis thaliana hypocotyls. To identify novel regulators of adventitious root formation, we analyzed adventitious rooting in the hypocotyl after whole root excision in 112 T-DNA homozygous leaf mutants, which were selected based on the dynamic expression profiles of their annotated genes during hormone-induced and wound-induced tissue regeneration. Forty-seven T-DNA homozygous lines that displayed low rooting capacity as regards their wild-type background were dubbed as the less adventitious roots (lars) mutants. We identified eight lines with higher rooting capacity than their wild-type background that we named as the more adventitious roots (mars) mutants. A relatively large number of mutants in ribosomal protein-encoding genes displayed a significant reduction in adventitious root number in the hypocotyl after whole root excision. In addition, gene products related to gibberellin (GA) biosynthesis and signaling, auxin homeostasis, and xylem differentiation were confirmed to participate in adventitious root formation. Nearly all the studied mutants tested displayed similar rooting responses from excised whole leaves, which suggest that their affected genes participate in shared regulatory pathways required for de novo organ formation in different organs.
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Affiliation(s)
- Sergio Ibáñez
- Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Alicante, Spain
| | - Helena Ruiz-Cano
- Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Alicante, Spain
| | - María Á. Fernández
- Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Alicante, Spain
- Instituto de Biología Molecular y Celular de Plantas, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Valencia, Spain
| | | | - Joan Villanova
- Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Alicante, Spain
- IDAI Nature S.L., La Pobla de Vallbona, Spain
| | - José Luis Micol
- Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Alicante, Spain
| | - José Manuel Pérez-Pérez
- Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Alicante, Spain
- *Correspondence: José Manuel Pérez-Pérez, ; arolab.edu.umh.es
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11
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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: 90] [Impact Index Per Article: 18.0] [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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12
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Kim G, Jang S, Yoon EK, Lee SA, Dhar S, Kim J, Lee MM, Lim J. Involvement of Pyridoxine/Pyridoxamine 5'-Phosphate Oxidase (PDX3) in Ethylene-Induced Auxin Biosynthesis in the Arabidopsis Root. Mol Cells 2018; 41:1033-1044. [PMID: 30453730 PMCID: PMC6315319 DOI: 10.14348/molcells.2018.0363] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 10/10/2018] [Indexed: 12/23/2022] Open
Abstract
As sessile organisms, plants have evolved to adjust their growth and development to environmental changes. It has been well documented that the crosstalk between different plant hormones plays important roles in the coordination of growth and development of the plant. Here, we describe a novel recessive mutant, mildly insensitive to ethylene (mine), which displayed insensitivity to the ethylene precursor, ACC (1-aminocyclopropane-1-carboxylic acid), in the root under the dark-grown conditions. By contrast, mine roots exhibited a normal growth response to exogenous IAA (indole-3-acetic acid). Thus, it appears that the growth responses of mine to ACC and IAA resemble those of weak ethylene insensitive (wei) mutants. To understand the molecular events underlying the crosstalk between ethylene and auxin in the root, we identified the MINE locus and found that the MINE gene encodes the pyridoxine 5'-phosphate (PNP)/pyridoxamine 5'-phosphate (PMP) oxidase, PDX3. Our results revealed that MINE/PDX3 likely plays a role in the conversion of the auxin precursor tryptophan to indole-3-pyruvic acid in the auxin biosynthesis pathway, in which TAA1 (TRYPTOPHAN AMINOTRANSFERASE OF ARABIDOPSIS 1) and its related genes (TRYPTOPHAN AMINOTRANSFERASE RELATED 1 and 2; TAR1 and TAR2) are involved. Considering that TAA1 and TARs belong to a subgroup of PLP (pyridoxal-5'-phosphate)-dependent enzymes, we propose that PLP produced by MINE/PDX3 acts as a cofactor in TAA1/TAR-dependent auxin biosynthesis induced by ethylene, which in turn influences the crosstalk between ethylene and auxin in the Arabidopsis root.
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Affiliation(s)
- Gyuree Kim
- Department of Systems Biotechnology, Konkuk University, Seoul,
Korea
| | - Sejeong Jang
- Department of Systems Biotechnology, Konkuk University, Seoul,
Korea
| | - Eun Kyung Yoon
- Department of Systems Biotechnology, Konkuk University, Seoul,
Korea
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore,
Singapore
| | - Shin Ae Lee
- Department of Systems Biotechnology, Konkuk University, Seoul,
Korea
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Wanju,
Korea
| | - Souvik Dhar
- Department of Systems Biotechnology, Konkuk University, Seoul,
Korea
| | - Jinkwon Kim
- Department of Systems Biotechnology, Konkuk University, Seoul,
Korea
| | - Myeong Min Lee
- Department of Systems Biology, Yonsei University, Seoul,
Korea
| | - Jun Lim
- Department of Systems Biotechnology, Konkuk University, Seoul,
Korea
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13
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Wei C, Zhu L, Wen J, Yi B, Ma C, Tu J, Shen J, Fu T. Morphological, transcriptomics and biochemical characterization of new dwarf mutant of Brassica napus. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 270:97-113. [PMID: 29576090 DOI: 10.1016/j.plantsci.2018.01.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 01/16/2018] [Accepted: 01/19/2018] [Indexed: 05/08/2023]
Abstract
Plant height is a key trait of plant architecture, and is responsible for both yield and lodging resistance in Brassica napus. A dwarf mutant line (bnaC.dwf) was obtained by chemical mutagenesis of an inbred line T6. However, the molecular mechanisms and changed biological processes of the dwarf mutant remain to be determined. In this study, a comparative transcriptome analysis between bnaC.dwf and T6 plants was performed to identify genome-wide differentially expressed genes (DEGs) and possible biological processes that may explain the phenotype variations in bnaC.dwf. As a result of this analysis, 60,134,746-60,301,384 clean reads were aligned to 60,074 genes in the B. napus genome, and accounted for 60.03% of the annotated genes. In total, 819 differentially expressed genes were used for GO (Gene Ontology) term and KEGG (Kyoto Encyclopedia of Genes and Genomes) pathway enrichment analyses with a FDR (false discovery rate) criterion of <0.001, |log2Ratio| ≥ 1. We focused on plant hormone signal transduction pathways, plant-pathogen interaction pathway, protein phosphorylation and degradation pathways and sugar metabolism pathways. Taken together, the decrease in local auxin (IAA) levels, the variation in BnTCH4, BnKAN1, BnERF109, COI1-JAZ9-MYC2, auxin response genes (BnGH3.11, BnSAUR78, and AUX/IAA19), and ABA (abscisic acid) signaling genes (BnADP5, BnSnRK2.1, BnABF3.1) partially accounted for variations of cell proliferation in internodes, shoot and root apical meristem maintenance, abiotic and biotic stress resistance, and pre-harvest sprouting. As a comprehensive consequence of the cross-talk between plant hormones, sugar metabolism, plant-pathogen interactions and protein metabolism, bnaC.dwf presents distinct phenotypes from T6. These results will be helpful for shedding light on molecular mechanisms in the dwarf mutant, and give insight into further molecular breeding of semi-dwarf B. napus.
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Affiliation(s)
- Chao Wei
- Tingdong Fu National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement in Wuhan, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Lixia Zhu
- Tingdong Fu National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement in Wuhan, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Jing Wen
- Tingdong Fu National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement in Wuhan, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Bin Yi
- Tingdong Fu National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement in Wuhan, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Chaozhi Ma
- Tingdong Fu National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement in Wuhan, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Jinxing Tu
- Tingdong Fu National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement in Wuhan, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Jinxiong Shen
- Tingdong Fu National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement in Wuhan, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Tingdong Fu
- Tingdong Fu National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement in Wuhan, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
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Zhang T, Li R, Xing J, Yan L, Wang R, Zhao Y. The YUCCA-Auxin-WOX11 Module Controls Crown Root Development in Rice. FRONTIERS IN PLANT SCIENCE 2018; 9:523. [PMID: 29740464 PMCID: PMC5925970 DOI: 10.3389/fpls.2018.00523] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 04/04/2018] [Indexed: 05/18/2023]
Abstract
A well-developed root system in rice and other crops can ensure plants to efficiently absorb nutrients and water. Auxin is a key regulator for various aspect of root development, but the detailed molecular mechanisms by which auxin controls crown root development in rice are not understood. We show that overexpression of a YUC gene, which encodes the rate-limiting enzyme in auxin biosynthesis, causes massive proliferation of crown roots. On the other hand, we find that disruption of TAA1, which functions upstream of YUC genes, greatly reduces crown root development. We find that YUC overexpression-induced crown root proliferation requires the presence of the transcription factor WOX11. Moreover, the crown rootless phenotype of taa1 mutants was partially rescued by overexpression of WOX11. Furthermore, we show that WOX11 expression is induced in OsYUC1 overexpression lines, but is repressed in the taa1 mutants. Our results indicate that auxin synthesized by the TAA/YUC pathway is necessary and sufficient for crown root development in rice. Auxin activates WOX11 transcription, which subsequently drives crown root initiation and development, establishing the YUC-Auxin-WOX11 module for crown root development in rice.
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Affiliation(s)
- Tao Zhang
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, China
| | - Ruonan Li
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, China
| | - Jialing Xing
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, China
| | - Lang Yan
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, China
| | - Rongchen Wang
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, China
| | - Yunde Zhao
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, China
- Section of Cell and Developmental Biology, University of California, San Diego, San Diego, CA, United States
- *Correspondence: Yunde Zhao, ;
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15
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Li YH, Zhang HN, Wu QS, Muday GK. Transcriptional sequencing and analysis of major genes involved in the adventitious root formation of mango cotyledon segments. PLANTA 2017; 245:1193-1213. [PMID: 28303391 DOI: 10.1007/s00425-017-2677-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 03/09/2017] [Indexed: 05/12/2023]
Abstract
A total of 74,745 unigenes were generated and 1975 DEGs were identified. Candidate genes that may be involved in the adventitious root formation of mango cotyledon segment were revealed. Adventitious root formation is a crucial step in plant vegetative propagation, but the molecular mechanism of adventitious root formation remains unclear. Adventitious roots formed only at the proximal cut surface (PCS) of mango cotyledon segments, whereas no roots were formed on the opposite, distal cut surface (DCS). To identify the transcript abundance changes linked to adventitious root development, RNA was isolated from PCS and DCS at 0, 4 and 7 days after culture, respectively. Illumina sequencing of libraries generated from these samples yielded 62.36 Gb high-quality reads that were assembled into 74,745 unigenes with an average sequence length of 807 base pairs, and 33,252 of the assembled unigenes at least had homologs in one of the public databases. Comparative analysis of these transcriptome databases revealed that between the different time points at PCS there were 1966 differentially expressed genes (DEGs), while there were only 51 DEGs for the PCS vs. DCS when time-matched samples were compared. Of these DEGs, 1636 were assigned to gene ontology (GO) classes, the majority of that was involved in cellular processes, metabolic processes and single-organism processes. Candidate genes that may be involved in the adventitious root formation of mango cotyledon segment are predicted to encode polar auxin transport carriers, auxin-regulated proteins, cell wall remodeling enzymes and ethylene-related proteins. In order to validate RNA-sequencing results, we further analyzed the expression profiles of 20 genes by quantitative real-time PCR. This study expands the transcriptome information for Mangifera indica and identifies candidate genes involved in adventitious root formation in cotyledon segments of mango.
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Affiliation(s)
- Yun-He Li
- South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Sciences, No. 1 Huxiu Road, Zhanjiang, 524091, China.
- Key Laboratory of Tropical Fruit Biology, Ministry of Agriculture, Zhanjiang, 524091, China.
- Department of Biology, Wake Forest University, Winston-Salem, NC, 27109, USA.
| | - Hong-Na Zhang
- South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Sciences, No. 1 Huxiu Road, Zhanjiang, 524091, China
| | - Qing-Song Wu
- South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Sciences, No. 1 Huxiu Road, Zhanjiang, 524091, China
| | - Gloria K Muday
- Department of Biology, Wake Forest University, Winston-Salem, NC, 27109, USA
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16
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Mignolli F, Mariotti L, Picciarelli P, Vidoz ML. Differential auxin transport and accumulation in the stem base lead to profuse adventitious root primordia formation in the aerial roots (aer) mutant of tomato (Solanum lycopersicum L.). JOURNAL OF PLANT PHYSIOLOGY 2017; 213:55-65. [PMID: 28315795 DOI: 10.1016/j.jplph.2017.02.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 02/13/2017] [Accepted: 02/23/2017] [Indexed: 05/15/2023]
Abstract
The aerial roots (aer) mutant of tomato is characterized by a profuse and precocious formation of adventitious root primordia along the stem. We demonstrated that auxin is involved in the aer phenotype but ruled out higher auxin sensitivity of mutant plants. Interestingly, polar auxin transport was altered in aer, as young seedlings showed a reduced response to an auxin transport inhibitor and higher expression of auxin export carriers SlPIN1 and SlPIN3. An abrupt reduction in transcripts of auxin efflux and influx genes in older aer hypocotyls caused a marked deceleration of auxin transport in more mature tissues. Indeed, in 20days old aer plants, the transport of labeled IAA was faster in apices than in hypocotyls, displaying an opposite trend in comparison to a wild type. In addition, auxin transport facilitators (SlPIN1, SlPIN4, SlLAX5) were more expressed in aer apices than in hypocotyls, suggesting that auxin moves faster from the upper to the lower part of the stem. Consequently, a significantly higher level of free and conjugated IAA was found at the base of aer stems with respect to their apices. This auxin accumulation is likely the cause of the aer phenotype.
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Affiliation(s)
- F Mignolli
- Instituto de Botánica del Nordeste (IBONE), UNNE-CONICET, Sargento Cabral 2131, 3400 Corrientes, Argentina.
| | - L Mariotti
- Dipartimento di Scienze Agrarie, Alimentari e Agro-ambientali, Università di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - P Picciarelli
- Dipartimento di Scienze Agrarie, Alimentari e Agro-ambientali, Università di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - M L Vidoz
- Instituto de Botánica del Nordeste (IBONE), UNNE-CONICET, Sargento Cabral 2131, 3400 Corrientes, Argentina; Facultad de Ciencias Agrarias, UNNE, Sargento Cabral 2131, 3400 Corrientes, Argentina
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17
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Pacurar DI, Pacurar ML, Lakehal A, Pacurar AM, Ranjan A, Bellini C. The Arabidopsis Cop9 signalosome subunit 4 (CNS4) is involved in adventitious root formation. Sci Rep 2017; 7:628. [PMID: 28377589 PMCID: PMC5429640 DOI: 10.1038/s41598-017-00744-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 03/14/2017] [Indexed: 11/09/2022] Open
Abstract
The COP9 signalosome (CSN) is an evolutionary conserved multiprotein complex that regulates many aspects of plant development by controlling the activity of CULLIN-RING E3 ubiquitin ligases (CRLs). CRLs ubiquitinate and target for proteasomal degradation a vast number of specific substrate proteins involved in many developmental and physiological processes, including light and hormone signaling and cell division. As a consequence of CSN pleiotropic function, complete loss of CSN activity results in seedling lethality. Therefore, a detailed analysis of CSN physiological functions in adult Arabidopsis plants has been hampered by the early seedling lethality of csn null mutants. Here we report the identification and characterization of a viable allele of the Arabidopsis COP9 signalosome subunit 4 (CSN4). The allele, designated csn4-2035, suppresses the adventitious root (AR) phenotype of the Arabidopsis superroot2-1 mutant, potentially by altering its auxin signaling. Furthermore, we show that although the csn4-2035 mutation affects primary and lateral root (LR) formation in the 2035 suppressor mutant, CSN4 and other subunits of the COP9 complex seem to differentially control AR and LR development.
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Affiliation(s)
- Daniel Ioan Pacurar
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90187, Umeå, Sweden. .,SweTree Technologies AB, P.O. Box 4095, SE-904 03, Umeå, Sweden.
| | - Monica Lacramioara Pacurar
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90187, Umeå, Sweden.,University of Agricultural Sciences and Veterinary Medicine, 400372, Cluj Napoca, Romania.,SweTree Technologies AB, P.O. Box 4095, SE-904 03, Umeå, Sweden
| | - Abdellah Lakehal
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90187, Umeå, Sweden
| | - Andrea Mariana Pacurar
- University of Agricultural Sciences and Veterinary Medicine, 400372, Cluj Napoca, Romania
| | - Alok Ranjan
- 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, Univ. Paris-Sud, F-78000, Versailles, France.
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18
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Zobel RW. Arabidopsis: An Adequate Model for Dicot Root Systems? FRONTIERS IN PLANT SCIENCE 2016; 7:58. [PMID: 26904040 PMCID: PMC4742568 DOI: 10.3389/fpls.2016.00058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 01/14/2016] [Indexed: 05/13/2023]
Abstract
The Arabidopsis root system is frequently considered to have only three classes of root: primary, lateral, and adventitious. Research with other plant species has suggested up to eight different developmental/functional classes of root for a given plant root system. If Arabidopsis has only three classes of root, it may not be an adequate model for eudicot plant root systems. Recent research, however, can be interpreted to suggest that pre-flowering Arabidopsis does have at least five (5) of these classes of root. This then suggests that Arabidopsis root research can be considered an adequate model for dicot plant root systems.
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Xu M, Xie W, Huang M. Two WUSCHEL-related HOMEOBOX genes, PeWOX11a and PeWOX11b, are involved in adventitious root formation of poplar. PHYSIOLOGIA PLANTARUM 2015; 155:446-56. [PMID: 25998748 DOI: 10.1111/ppl.12349] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 04/19/2015] [Accepted: 04/20/2015] [Indexed: 05/24/2023]
Abstract
The plant-specific WUSCHEL-related HOMEOBOX (WOX) transcription factors play important roles in key developmental processes, but knowledge regarding functional characterization of WOX genes in poplar remains limited. To reveal genes and signaling pathways associated with adventitious rooting in poplar, here we isolated and characterized two WOX genes through the rapid amplification of cDNA ends (RACE), sequence aligning, expression profiling, protoplast transfection and poplar transformation. Detailed information about the sequence similarity, structural features, evolutionary relationships, expression patterns and subcellular localization of the two genes were revealed. Overexpression of either PeWOX11a or PeWOX11b not only increased the number of adventitious roots on the cuttings but also induced ectopic roots in the aerial parts of transgenic poplars. Meanwhile, their overexpression in transgenic poplars affected axillary bud and leaf development. These results suggest that PeWOX11a and PeWOX11b were involved in multiple developmental processes of poplar, especially in adventitious root formation. Our results provide new insights into the molecular mechanisms underlying adventitious root formation of poplar.
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Affiliation(s)
- Meng Xu
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- Key Laboratory of Forest Genetics & Biotechnology, Nanjing Forestry University, Ministry of Education, Nanjing, China
| | - Wenfan Xie
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- Key Laboratory of Forest Genetics & Biotechnology, Nanjing Forestry University, Ministry of Education, Nanjing, China
| | - Minren Huang
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- Key Laboratory of Forest Genetics & Biotechnology, Nanjing Forestry University, Ministry of Education, Nanjing, China
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20
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Pacurar DI, Pacurar ML, Pacurar AM, Gutierrez L, Bellini C. A novel viable allele of Arabidopsis CULLIN1 identified in a screen for superroot2 suppressors by next generation sequencing-assisted mapping. PLoS One 2014; 9:e100846. [PMID: 24955772 PMCID: PMC4067405 DOI: 10.1371/journal.pone.0100846] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 05/30/2014] [Indexed: 11/19/2022] Open
Abstract
Map-based cloning (MBC) is the conventional approach for linking phenotypes to genotypes, and has been successfully used to identify causal mutations in diverse organisms. Next-generation sequencing (NGS) technologies offer unprecedented possibilities to sequence the entire genomes of organisms, thereby in principle enabling direct identification of causal mutations without mapping. However, although mapping-by-sequencing has proven to be a cost effective alternative to classical MBC in particular situations, methods based solely on NGS still have limitations and need to be refined. Aiming to identify the causal mutations in suppressors of Arabidopsis thaliana superroot2 phenotype, generated by ethyl methane sulfonate (EMS) treatment, we combined NGS and classical mapping, to rapidly identify the point mutations and restrict the number of testable candidates by defining the chromosomal intervals containing the causal mutations, respectively. The NGS-assisted mapping approach we describe here facilitates unbiased identification of virtually any causal EMS-generated mutation by overlapping the identification (deep sequencing) and validation (mapping) steps. To exemplify the useful marriage of the two approaches we discuss the strategy used to identify a new viable recessive allele of the Arabidopsis CULLIN1 gene in the non-reference Wassilewskija (Ws-4) accession.
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Affiliation(s)
- Daniel I. Pacurar
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden
- * E-mail:
| | - Monica L. Pacurar
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden
- Faculty of Horticulture, University of Agricultural Sciences and Veterinary Medicine, Cluj Napoca, Romania
- Present address: SweTree Technologies AB, Umeå, Sweden
| | - Andrea M. Pacurar
- Faculty of Horticulture, University of Agricultural Sciences and Veterinary Medicine, Cluj Napoca, Romania
| | - Laurent Gutierrez
- Molecular biology platform (CRRBM), Université de Picardie Jules Verne, Amiens, France
| | - Catherine Bellini
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden
- Institut Jean-Pierre Bourgin, French National Institute for Agricultural Research (UMR1318 INRA-AgroParisTech), Versailles, France
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Pacurar DI, Perrone I, Bellini C. Auxin is a central player in the hormone cross-talks that control adventitious rooting. PHYSIOLOGIA PLANTARUM 2014; 151:83-96. [PMID: 24547793 DOI: 10.1111/ppl.12171] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 02/11/2014] [Accepted: 02/11/2014] [Indexed: 05/20/2023]
Abstract
Vegetative propagation of economically important woody, horticultural and agricultural species rely on an efficient adventitious root (AR) formation. The formation of ARs is a complex genetic trait regulated by the interaction of environmental and endogenous factors among which the phytohormone auxin plays an essential role. This article summarizes the current knowledge related to the intricate network through which auxin controls adventitious rooting. How auxin and recently identified auxin-related compounds affect AR formation in different plant species is discussed. Particular attention is addressed to illustrate how auxin has a central role in the hormone cross-talk leading to AR development. In parallel, we describe the molecular players involved in the control of auxin homeostasis, transport and signaling, for a better understanding of the auxin action during adventitious rooting.
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Affiliation(s)
- Daniel Ioan Pacurar
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, SE-90187, Sweden
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