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Stojilković B, Xiang H, Chen Y, Maulana MI, Bauters L, Van de Put H, Steppe K, Liao J, de Almeida Engler J, Gheysen G. The nematode effector Mj-NEROSs interacts with Rieske's iron-sulfur protein influencing plastid ROS production to suppress plant immunity. THE NEW PHYTOLOGIST 2024; 242:2787-2802. [PMID: 38693568 DOI: 10.1111/nph.19781] [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: 12/16/2022] [Accepted: 03/16/2024] [Indexed: 05/03/2024]
Abstract
Root-knot nematodes (RKN; Meloidogyne species) are plant pathogens that introduce several effectors in their hosts to facilitate infection. The actual targets and functioning mechanism of these effectors largely remain unexplored. This study illuminates the role and interplay of the Meloidogyne javanica nematode effector ROS suppressor (Mj-NEROSs) within the host plant environment. Mj-NEROSs suppresses INF1-induced cell death as well as flg22-induced callose deposition and reactive oxygen species (ROS) production. A transcriptome analysis highlighted the downregulation of ROS-related genes upon Mj-NEROSs expression. NEROSs interacts with the plant Rieske's iron-sulfur protein (ISP) as shown by yeast-two-hybrid and bimolecular fluorescence complementation. Secreted from the subventral pharyngeal glands into giant cells, Mj-NEROSs localizes in the plastids where it interacts with ISP, subsequently altering electron transport rates and ROS production. Moreover, our results demonstrate that isp Arabidopsis thaliana mutants exhibit increased susceptibility to M. javanica, indicating ISP importance for plant immunity. The interaction of a nematode effector with a plastid protein highlights the possible role of root plastids in plant defense, prompting many questions on the details of this process.
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Affiliation(s)
- Boris Stojilković
- Department of Biotechnology, Ghent University, Proeftuinstraat 86, Ghent, 9000, Belgium
- Cell and Developmental Biology, John Innes Centre, Norwich, NR4 7UH, UK
| | - Hui Xiang
- Department of Biotechnology, Ghent University, Proeftuinstraat 86, Ghent, 9000, Belgium
| | - Yujin Chen
- Department of Biotechnology, Ghent University, Proeftuinstraat 86, Ghent, 9000, Belgium
| | - Muhammad Iqbal Maulana
- Laboratory of Nematology, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands
- Department of Plant Protection, Faculty of Agriculture, Universitas Gadjah Mada, Jl. Flora, Bulaksumur, Yogyakarta, 55281, Indonesia
| | - Lander Bauters
- Department of Biotechnology, Ghent University, Proeftuinstraat 86, Ghent, 9000, Belgium
| | - Hans Van de Put
- Laboratory of Plant Ecology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000, Gent, Belgium
| | - Kathy Steppe
- Laboratory of Plant Ecology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000, Gent, Belgium
| | - Jinling Liao
- Laboratory of Plant Nematology, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Vocational College of Ecological Engineering, Guangzhou, 510520, China
| | | | - Godelieve Gheysen
- Department of Biotechnology, Ghent University, Proeftuinstraat 86, Ghent, 9000, Belgium
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Matuszkiewicz M, Sobczak M. Syncytium Induced by Plant-Parasitic Nematodes. Results Probl Cell Differ 2024; 71:371-403. [PMID: 37996687 DOI: 10.1007/978-3-031-37936-9_18] [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] [Indexed: 11/25/2023]
Abstract
Plant-parasitic nematodes from the genera Globodera, Heterodera (cyst-forming nematodes), and Meloidogyne (root-knot nematodes) are notorious and serious pests of crops. They cause tremendous economic losses between US $80 and 358 billion a year. Nematodes infect the roots of plants and induce the formation of specialised feeding structures (syncytium and giant cells, respectively) that nourish juveniles and adults of the nematodes. The specialised secretory glands enable nematodes to synthesise and secrete effectors that facilitate migration through root tissues and alter the morphogenetic programme of host cells. The formation of feeding sites is associated with the suppression of plant defence responses and deep reprogramming of the development and metabolism of plant cells.In this chapter, we focus on syncytia induced by the sedentary cyst-forming nematodes and provide an overview of ultrastructural changes that occur in the host roots during syncytium formation in conjunction with the most important molecular changes during compatible and incompatible plant responses to infection with nematodes.
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Affiliation(s)
- Mateusz Matuszkiewicz
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences (WULS-SGGW), Warsaw, Poland.
| | - Mirosław Sobczak
- Department of Botany, Institute of Biology, Warsaw University of Life Sciences (WULS-SGGW), Warsaw, Poland
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3
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Freitas-Alves NS, Moreira-Pinto CE, Arraes FBM, Costa LSDL, de Abreu RA, Moreira VJV, Lourenço-Tessutti IT, Pinheiro DH, Lisei-de-Sa ME, Paes-de-Melo B, Pereira BM, Guimaraes PM, Brasileiro ACM, de Almeida-Engler J, Soccol CR, Morgante CV, Basso MF, Grossi-de-Sa MF. An ex vitro hairy root system from petioles of detached soybean leaves for in planta screening of target genes and CRISPR strategies associated with nematode bioassays. PLANTA 2023; 259:23. [PMID: 38108903 DOI: 10.1007/s00425-023-04286-x] [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: 07/16/2023] [Accepted: 11/09/2023] [Indexed: 12/19/2023]
Abstract
MAIN CONCLUSION The ex vitro hairy root system from petioles of detached soybean leaves allows the functional validation of genes using classical transgenesis and CRISPR strategies (e.g., sgRNA validation, gene activation) associated with nematode bioassays. Agrobacterium rhizogenes-mediated root transformation has been widely used in soybean for the functional validation of target genes in classical transgenesis and single-guide RNA (sgRNA) in CRISPR-based technologies. Initial data showed that in vitro hairy root induction from soybean cotyledons and hypocotyls were not the most suitable strategies for simultaneous performing genetic studies and nematode bioassays. Therefore, an ex vitro hairy root system was developed for in planta screening of target molecules during soybean parasitism by root-knot nematodes (RKNs). Applying this method, hairy roots were successfully induced by A. rhizogenes from petioles of detached soybean leaves. The soybean GmPR10 and GmGST genes were then constitutively overexpressed in both soybean hairy roots and tobacco plants, showing a reduction in the number of Meloidogyne incognita-induced galls of up to 41% and 39%, respectively. In addition, this system was evaluated for upregulation of the endogenous GmExpA and GmExpLB genes by CRISPR/dCas9, showing high levels of gene activation and reductions in gall number of up to 58.7% and 67.4%, respectively. Furthermore, morphological and histological analyses of the galls were successfully performed. These collective data validate the ex vitro hairy root system for screening target genes, using classical overexpression and CRISPR approaches, directly in soybean in a simple manner and associated with nematode bioassays. This system can also be used in other root pathosystems for analyses of gene function and studies of parasite interactions with plants, as well as for other purposes such as studies of root biology and promoter characterization.
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Affiliation(s)
- Nayara S Freitas-Alves
- Bioprocess Engineering and Biotechnology Graduate Program, Federal University of Paraná-UFPR, Curitiba, PR, Brazil
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Clidia E Moreira-Pinto
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Fabrício B M Arraes
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Lorena S de L Costa
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- Molecular Biology Graduate Program, University of Brasília-UNB, Brasília, DF, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Rayane A de Abreu
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
| | - Valdeir J V Moreira
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- Molecular Biology Graduate Program, University of Brasília-UNB, Brasília, DF, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Isabela T Lourenço-Tessutti
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Daniele H Pinheiro
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Maria E Lisei-de-Sa
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Bruno Paes-de-Melo
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Bruna M Pereira
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
| | - Patricia M Guimaraes
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Ana C M Brasileiro
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Janice de Almeida-Engler
- INRAE, Université Côte d'Azur, CNRS, 06903, Sophia Antipolis, ISA, France
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Carlos R Soccol
- Bioprocess Engineering and Biotechnology Graduate Program, Federal University of Paraná-UFPR, Curitiba, PR, Brazil
| | - Carolina V Morgante
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- Embrapa Semiarid, Petrolina, PE, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Marcos F Basso
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil
| | - Maria F Grossi-de-Sa
- Bioprocess Engineering and Biotechnology Graduate Program, Federal University of Paraná-UFPR, Curitiba, PR, Brazil.
- Embrapa Genetic Resources and Biotechnology, PqEB Final, W5 Norte, PO Box 02372, Brasília, DF, 70770-917, Brazil.
- Molecular Biology Graduate Program, University of Brasília-UNB, Brasília, DF, Brazil.
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, Brazil.
- Catholic University of Brasília, Brasília, DF, Brazil.
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4
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The Cytoskeleton in Plant Immunity: Dynamics, Regulation, and Function. Int J Mol Sci 2022; 23:ijms232415553. [PMID: 36555194 PMCID: PMC9779068 DOI: 10.3390/ijms232415553] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/04/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022] Open
Abstract
The plant cytoskeleton, consisting of actin filaments and microtubules, is a highly dynamic filamentous framework involved in plant growth, development, and stress responses. Recently, research has demonstrated that the plant cytoskeleton undergoes rapid remodeling upon sensing pathogen attacks, coordinating the formation of microdomain immune complexes, the dynamic and turnover of pattern-recognizing receptors (PRRs), the movement and aggregation of organelles, and the transportation of defense compounds, thus serving as an important platform for responding to pathogen infections. Meanwhile, pathogens produce effectors targeting the cytoskeleton to achieve pathogenicity. Recent findings have uncovered several cytoskeleton-associated proteins mediating cytoskeletal remodeling and defense signaling. Furthermore, the reorganization of the actin cytoskeleton is revealed to further feedback-regulate reactive oxygen species (ROS) production and trigger salicylic acid (SA) signaling, suggesting an extremely complex role of the cytoskeleton in plant immunity. Here, we describe recent advances in understanding the host cytoskeleton dynamics upon sensing pathogens and summarize the effectors that target the cytoskeleton. We highlight advances in the regulation of cytoskeletal remodeling associated with the defense response and assess the important function of the rearrangement of the cytoskeleton in the immune response. Finally, we propose suggestions for future research in this area.
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Arraes FBM, Vasquez DDN, Tahir M, Pinheiro DH, Faheem M, Freitas-Alves NS, Moreira-Pinto CE, Moreira VJV, Paes-de-Melo B, Lisei-de-Sa ME, Morgante CV, Mota APZ, Lourenço-Tessutti IT, Togawa RC, Grynberg P, Fragoso RR, de Almeida-Engler J, Larsen MR, Grossi-de-Sa MF. Integrated Omic Approaches Reveal Molecular Mechanisms of Tolerance during Soybean and Meloidogyne incognita Interactions. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11202744. [PMID: 36297768 PMCID: PMC9612212 DOI: 10.3390/plants11202744] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 05/08/2023]
Abstract
The root-knot nematode (RKN), Meloidogyne incognita, is a devastating soybean pathogen worldwide. The use of resistant cultivars is the most effective method to prevent economic losses caused by RKNs. To elucidate the mechanisms involved in resistance to RKN, we determined the proteome and transcriptome profiles from roots of susceptible (BRS133) and highly tolerant (PI 595099) Glycine max genotypes 4, 12, and 30 days after RKN infestation. After in silico analysis, we described major defense molecules and mechanisms considered constitutive responses to nematode infestation, such as mTOR, PI3K-Akt, relaxin, and thermogenesis. The integrated data allowed us to identify protein families and metabolic pathways exclusively regulated in tolerant soybean genotypes. Among them, we highlighted the phenylpropanoid pathway as an early, robust, and systemic defense process capable of controlling M. incognita reproduction. Associated with this metabolic pathway, 29 differentially expressed genes encoding 11 different enzymes were identified, mainly from the flavonoid and derivative pathways. Based on differential expression in transcriptomic and proteomic data, as well as in the expression profile by RT-qPCR, and previous studies, we selected and overexpressed the GmPR10 gene in transgenic tobacco to assess its protective effect against M. incognita. Transgenic plants of the T2 generation showed up to 58% reduction in the M. incognita reproduction factor. Finally, data suggest that GmPR10 overexpression can be effective against the plant parasitic nematode M. incognita, but its mechanism of action remains unclear. These findings will help develop new engineered soybean genotypes with higher performance in response to RKN infections.
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Affiliation(s)
- Fabricio B M Arraes
- Postgraduate Program in Cellular and Molecular Biology (PPGBCM), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre 91501-970, RS, Brazil
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
| | - Daniel D N Vasquez
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
- Postgraduate Program in Genomic Sciences and Biotechnology (PPGCGB), Catholic University of Brasilia (UCB), Brasilia 71966-700, DF, Brazil
| | - Muhammed Tahir
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense, Denmark
| | - Daniele H Pinheiro
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
| | - Muhammed Faheem
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- Department of Biological Sciences, National University of Medical Sciences, The Mall, Rawalpindi 46000, Punjab, Pakistan
| | - Nayara S Freitas-Alves
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- Postgraduate Program in Bioprocess Engineering and Biotechnology (PPGEBB), Federal University of Paraná (UFPR), Curitiba 80060-000, PR, Brazil
| | - Clídia E Moreira-Pinto
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
| | - Valdeir J V Moreira
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
- Postgraduate Program in Molecular Biology (PPGBiomol), University of Brasilia (UnB), Brasília 70910-900, DF, Brazil
| | - Bruno Paes-de-Melo
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
| | - Maria E Lisei-de-Sa
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
- Minas Gerais Agricultural Research Company (EPAMIG), Uberaba 31170-495, MG, Brazil
| | - Carolina V Morgante
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
- Embrapa Semiarid, Petrolina 56302-970, PE, Brazil
| | - Ana P Z Mota
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
- INRAE, Université Côte d'Azur, CNRS, Institut Sophia Agrobiotech, 06903 Sophia-Antipolis, France
| | - Isabela T Lourenço-Tessutti
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
| | - Roberto C Togawa
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
| | - Priscila Grynberg
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
| | - Rodrigo R Fragoso
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
- Embrapa Agroenergy, Brasilia 70770-901, DF, Brazil
| | - Janice de Almeida-Engler
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
- INRAE, Université Côte d'Azur, CNRS, Institut Sophia Agrobiotech, 06903 Sophia-Antipolis, France
| | - Martin R Larsen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense, Denmark
| | - Maria F Grossi-de-Sa
- Embrapa Genetic Resources and Biotechnology, Plant-Pest Molecular Interaction Laboratory (LIMPP) and Bioinformatics Laboratory, Brasilia 70770-917, DF, Brazil
- National Institute of Science and Technology (INCT PlantStress Biotech), Brasilia 70770-917, DF, Brazil
- Postgraduate Program in Genomic Sciences and Biotechnology (PPGCGB), Catholic University of Brasilia (UCB), Brasilia 71966-700, DF, Brazil
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6
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Aphelenchoides besseyi Ab-FAR-1 Interacts with Arabidopsis thaliana AtADF3 to Interfere with Actin Cytoskeleton, and Promotes Nematode Parasitism and Pathogenicity. Int J Mol Sci 2022; 23:ijms232012280. [PMID: 36293146 PMCID: PMC9603084 DOI: 10.3390/ijms232012280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 09/30/2022] [Accepted: 10/11/2022] [Indexed: 01/24/2023] Open
Abstract
Fatty acid and retinol binding proteins (FAR) are unique proteins found in nematodes and are considered potential targets for controlling these parasites. However, their functions in nematode parasitism and pathogenicity and interaction with hosts are still unclear. In this study, we investigated the specific roles of rice white tip nematodes (RWTNs), Aphelenchoides besseyi, and a protein, Ab-FAR-1, to elucidate the parasitic and pathogenic processes of nematodes. The results showed that the expression level of Ab-far-1 was significantly up-regulated after A. besseyi infection of the plant. The immunofluorescence and subcellular localisation showed that Ab-FAR-1 was secreted into plant tissues mainly through the body wall of nematodes and might act in the nucleus and cytoplasm of plant cells. The pathogenicity of RWTNs was enhanced in Arabidopsis thaliana overexpressing Ab-FAR-1 and inhibited in Ab-far-1 RNAi A. thaliana. Yeast two-hybrid, Co-IP, BiFC, and nematode inoculation experiments showed that Ab-FAR-1 could interact with the A. thaliana actin-depolymerizing factor protein AtADF3, and the A. thaliana adf3 mutant was more susceptible to nematodes. An in vitro actin filament depolymerisation assay demonstrated that Ab-FAR-1 could inhibit AtADF3-mediated depolymerisation of actin filaments, and the turnover process of cellular actin filaments was also affected in A. thaliana overexpressing Ab-FAR-1. In addition, flg22-mediated host defence responses were suppressed in A. thaliana overexpressing Ab-FAR-1 and adf3 mutants. Therefore, this study confirmed that RWTNs can affect the turnover of actin filament remodelling mediated by AtADF3 through Ab-FAR-1 secretion and thus inhibit plant PAMP-triggered immunity (PTI), promoting the parasitism and pathogenicity of nematodes.
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Fitoussi N, de Almeida Engler J, Sichov N, Bucki P, Sela N, Harel A, Belausuv E, Kumar A, Brown Miyara S. The Minichromosome Maintenance Complex Component 2 (MjMCM2) of Meloidogyne javanica is a potential effector regulating the cell cycle in nematode-induced galls. Sci Rep 2022; 12:9196. [PMID: 35654810 PMCID: PMC9163083 DOI: 10.1038/s41598-022-13020-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 05/12/2022] [Indexed: 11/09/2022] Open
Abstract
Root-knot nematodes Meloidogyne spp. induce enlarged multinucleate feeding cells—galls—in host plant roots. Although core cell-cycle components in galls follow a conserved track, they can also be usurped and manipulated by nematodes. We identified a candidate effector in Meloidogyne javanica that is directly involved in cell-cycle manipulation—Minichromosome Maintenance Complex Component 2 (MCM2), part of MCM complex licensing factor involved in DNA replication. MjMCM2, which is induced by plant oxilipin 9-HOT, was expressed in nematode esophageal glands, upregulated during parasitic stages, and was localized to plant cell nucleus and plasma membrane. Infected tomato hairy roots overexpressing MjMCM2 showed significantly more galls and egg-mass-producing females than wild-type roots, and feeding cells showed more nuclei. Phylogenetic analysis suggested seven homologues of MjMCM2 with unknown association to parasitism. Sequence mining revealed two RxLR-like motifs followed by SEED domains in all Meloidogyne spp. MCM2 protein sequences. The unique second RxLR-like motif was absent in other Tylenchida species. Molecular homology modeling of MjMCM2 suggested that second RxLR2-like domain is positioned on a surface loop structure, supporting its function in polar interactions. Our findings reveal a first candidate cell-cycle gene effector in M. javanica—MjMCM2—that is likely secreted into plant host to mimic function of endogenous MCM2.
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Affiliation(s)
- Nathalia Fitoussi
- Department of Entomology, Nematology and Chemistry Units, Agricultural Research Organization (ARO), The Volcani Center, 50250, Bet Dagan, Israel.,Department of Plant Pathology and Microbiology, The Faculty of Agriculture Food and Environment, The Hebrew University of Jerusalem, 76100, Rehovot, Israel
| | | | - Natalia Sichov
- Department of Entomology, Nematology and Chemistry Units, Agricultural Research Organization (ARO), The Volcani Center, 50250, Bet Dagan, Israel
| | - Patricia Bucki
- Department of Entomology, Nematology and Chemistry Units, Agricultural Research Organization (ARO), The Volcani Center, 50250, Bet Dagan, Israel
| | - Noa Sela
- Bioinformatics Unit, Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, 50250, Bet Dagan, Israel
| | - Arye Harel
- Bioinformatics Unit, Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, 50250, Bet Dagan, Israel
| | - Eduard Belausuv
- Department of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, Bet Dagan, Israel
| | - Anil Kumar
- Department of Entomology, Nematology and Chemistry Units, Agricultural Research Organization (ARO), The Volcani Center, 50250, Bet Dagan, Israel
| | - Sigal Brown Miyara
- Department of Entomology, Nematology and Chemistry Units, Agricultural Research Organization (ARO), The Volcani Center, 50250, Bet Dagan, Israel.
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8
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Jagdale S, Rao U, Giri AP. Effectors of Root-Knot Nematodes: An Arsenal for Successful Parasitism. FRONTIERS IN PLANT SCIENCE 2021; 12:800030. [PMID: 35003188 PMCID: PMC8727514 DOI: 10.3389/fpls.2021.800030] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 11/23/2021] [Indexed: 05/13/2023]
Abstract
Root-knot nematodes (RKNs) are notorious plant-parasitic nematodes first recorded in 1855 in cucumber plants. They are microscopic, obligate endoparasites that cause severe losses in agriculture and horticulture. They evade plant immunity, hijack the plant cell cycle, and metabolism to modify healthy cells into giant cells (GCs) - RKN feeding sites. RKNs secrete various effector molecules which suppress the plant defence and tamper with plant cellular and molecular biology. These effectors originate mainly from sub-ventral and dorsal oesophageal glands. Recently, a few non-oesophageal gland secreted effectors have been discovered. Effectors are essential for the entry of RKNs in plants, subsequently formation and maintenance of the GCs during the parasitism. In the past two decades, advanced genomic and post-genomic techniques identified many effectors, out of which only a few are well characterized. In this review, we provide molecular and functional details of RKN effectors secreted during parasitism. We list the known effectors and pinpoint their molecular functions. Moreover, we attempt to provide a comprehensive insight into RKN effectors concerning their implications on overall plant and nematode biology. Since effectors are the primary and prime molecular weapons of RKNs to invade the plant, it is imperative to understand their intriguing and complex functions to design counter-strategies against RKN infection.
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Affiliation(s)
- Shounak Jagdale
- Plant Molecular Biology Unit, Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Pune, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Uma Rao
- Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Ashok P. Giri
- Plant Molecular Biology Unit, Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Pune, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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9
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Zhao J, Sun Q, Quentin M, Ling J, Abad P, Zhang X, Li Y, Yang Y, Favery B, Mao Z, Xie B. A Meloidogyne incognita C-type lectin effector targets plant catalases to promote parasitism. THE NEW PHYTOLOGIST 2021; 232:2124-2137. [PMID: 34449897 DOI: 10.1111/nph.17690] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 08/20/2021] [Indexed: 05/27/2023]
Abstract
Root-knot nematodes, Meloidogyne spp., secrete effectors to modulate plant immune responses and establish a parasitic relationship with host plants. However, the functions and plant targets of C-type lectin (CTL)-like effectors of Meloidogyne incognita remain unknown. Here, we characterized a CTL-like effector of M. incognita, MiCTL1a, and identified its target and role in nematode parasitism. In situ hybridization demonstrated the expression of MiCTL1 in the subventral glands; and in planta, immunolocalization showed its secretion during M. incognita parasitism. Virus-induced gene silencing of the MiCTL1 reduced the infection ability of M. incognita in Nicotiana benthamiana. The ectopic expression in Arabidopsis not only increased susceptibility to M. incognita but also promoted root growth. Yeast two-hybrid and co-immunoprecipitation assays revealed that MiCTL1a interacts with Arabidopsis catalases, which play essential roles in hydrogen peroxide homeostasis. Knockout or overexpression of catalases showed either increased or reduced susceptibility to M. incognita, respectively. Moreover, MiCTL1a not only reduced catalase activity in vitro and in planta but also modulated stress-related gene expressions in Arabidopsis. Our data suggest that MiCTL1a interacts with plant catalases and interferes with catalase activity, allowing M. incognita to establish a parasitic relationship with its host by fine-tuning responses mediated by reactive oxygen species.
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Affiliation(s)
- Jianlong Zhao
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
| | - Qinghua Sun
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
| | - Michaël Quentin
- INRAE, CNRS, ISA, Université Côte d'Azur, Sophia Antipolis, F-06903, France
| | - Jian Ling
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
| | - Pierre Abad
- INRAE, CNRS, ISA, Université Côte d'Azur, Sophia Antipolis, F-06903, France
| | - Xiaoping Zhang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
- Chifeng University, Chifeng, Inner Mongolia, 024099, China
| | - Yan Li
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
| | - Yuhong Yang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
| | - Bruno Favery
- INRAE, CNRS, ISA, Université Côte d'Azur, Sophia Antipolis, F-06903, France
| | - Zhenchuan Mao
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
| | - Bingyan Xie
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
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10
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Lisei-de-Sá ME, Rodrigues-Silva PL, Morgante CV, de Melo BP, Lourenço-Tessutti IT, Arraes FBM, Sousa JPA, Galbieri R, Amorim RMS, de Lins CBJ, Macedo LLP, Moreira VJ, Ferreira GF, Ribeiro TP, Fragoso RR, Silva MCM, de Almeida-Engler J, Grossi-de-Sa MF. Pyramiding dsRNAs increases phytonematode tolerance in cotton plants. PLANTA 2021; 254:121. [PMID: 34779907 DOI: 10.1007/s00425-021-03776-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/29/2021] [Indexed: 06/13/2023]
Abstract
Host-derived suppression of nematode essential genes decreases reproduction of Meloidogyne incognita in cotton. Root-knot nematodes (RKN) represent one of the most damaging plant-parasitic nematode genera worldwide. RNAi-mediated suppression of essential nematode genes provides a novel biotechnological strategy for the development of sustainable pest-control methods. Here, we used a Host Induced Gene Silencing (HIGS) approach by stacking dsRNA sequences into a T-DNA construct to target three essential RKN genes: cysteine protease (Mi-cpl), isocitrate lyase (Mi-icl), and splicing factor (Mi-sf), called dsMinc1, driven by the pUceS8.3 constitutive soybean promoter. Transgenic dsMinc1-T4 plants infected with Meloidogyne incognita showed a significant reduction in gall formation (57-64%) and egg masses production (58-67%), as well as in the estimated reproduction factor (60-78%), compared with the susceptible non-transgenic cultivar. Galls of the RNAi lines are smaller than the wild-type (WT) plants, whose root systems exhibited multiple well-developed root swellings. Transcript levels of the three RKN-targeted genes decreased 13- to 40-fold in nematodes from transgenic cotton galls, compared with those from control WT galls. Finally, the development of non-feeding males in transgenic plants was 2-6 times higher than in WT plants, indicating a stressful environment for nematode development after RKN gene silencing. Data strongly support that HIGS of essential RKN genes is an effective strategy to improve cotton plant tolerance. This study presents the first application of dsRNA sequences to target multiple genes to promote M. incognita tolerance in cotton without phenotypic penalty in transgenic plants.
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Affiliation(s)
- Maria E Lisei-de-Sá
- Empresa de Pesquisa Agropecuária de Minas Gerais, Uberaba, MG, Brazil
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Paolo L Rodrigues-Silva
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil
- Universidade Católica de Brasília, Brasilia, DF, Brazil
| | - Carolina V Morgante
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil
- Embrapa Semi-Árido, Pretrolina, PE, Brazil
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Bruno Paes de Melo
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Isabela T Lourenço-Tessutti
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Fabricio B M Arraes
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - João P A Sousa
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil
- Universidade Católica de Brasília, Brasilia, DF, Brazil
| | - Rafael Galbieri
- Instituto Matogrossense Do Algodão, Rondonopolis, MT, Brazil
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | | | | | - Leonardo L P Macedo
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Valdeir J Moreira
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil
- Departamento de Biologia Molecular, Universidade de Brasília, Brasilia, DF, Brazil
| | | | - Thuanne P Ribeiro
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Rodrigo R Fragoso
- Embrapa Cerrados, Planaltina, DF, Brazil
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Maria C M Silva
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Janice de Almeida-Engler
- UMR Institut Sophia Agrobiotech INRA/CNRS/UNS, Sophia Antipolis, France
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil
| | - Maria F Grossi-de-Sa
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, Brazil.
- Universidade Católica de Brasília, Brasilia, DF, Brazil.
- Instituto de Ciência E Tecnologia-INCT PlantStress Biotech-EMBRAPA, Brasilia, Brazil.
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11
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Godinho Mendes RA, Basso MF, Fernandes de Araújo J, Paes de Melo B, Lima RN, Ribeiro TP, da Silva Mattos V, Saliba Albuquerque EV, Grossi-de-Sa M, Dessaune Tameirao SN, da Rocha Fragoso R, Mattar da Silva MC, Vignols F, Fernandez D, Grossi-de-Sa MF. Minc00344 and Mj-NULG1a effectors interact with GmHub10 protein to promote the soybean parasitism by Meloidogyne incognita and M. javanica. Exp Parasitol 2021; 229:108153. [PMID: 34508716 DOI: 10.1016/j.exppara.2021.108153] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 05/31/2021] [Accepted: 08/28/2021] [Indexed: 10/24/2022]
Abstract
Several economically important crops are susceptible to root-knot nematode (RKNs). Meloidogyne incognita and M. javanica are the two most reported species from the RKN complex, causing damage to several crops worldwide. The successful outcome of the Meloidogyne-plant interaction is associated with molecular factors secreted by the nematode to suppress the plant's immune response and promote nematode parasitism. In contrast, several plant factors are associated with defense against nematode infection. In this study, we identified and characterized the specific interaction of Minc00344 and Mj-NULG1a effectors with soybean GmHub10 (Glyma.19G008200) protein in vitro and in vivo. An Arabidopsis thaliana T-DNA mutant of AtHub10 (AT3G27960, an orthologous gene of GmHub10) showed higher susceptibility to M. incognita. Thus, since soybean and A. thaliana Hub10 proteins are involved in pollen tube growth and indirect activation of the defense response, our data suggest that effector-Hub10 interactions could be associated with an increase in plant susceptibility. These findings indicate the potential of these effector proteins to develop new biotechnological tools based on RNA interference and the overexpression of engineered Hub10 proteins for the efficient management of RKN in crops.
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Affiliation(s)
- Reneida Aparecida Godinho Mendes
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, 70297-400, Brazil; Federal University of Brasília, Brasília-DF, 70910-900, Brazil
| | - Marcos Fernando Basso
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, 70297-400, Brazil; National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brazil
| | | | - Bruno Paes de Melo
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, 70297-400, Brazil; Federal University of Viçosa, Viçosa-MG, 36570-900, Brazil
| | - Rayane Nunes Lima
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, 70297-400, Brazil
| | | | | | | | - Maira Grossi-de-Sa
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, 70297-400, Brazil; IRD, Cirad, Univ Montpellier, IPME, 911, Avenue Agropolis, 34394, Montpellier Cedex 5, France
| | | | | | - Maria Cristina Mattar da Silva
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, 70297-400, Brazil; National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brazil
| | - Florence Vignols
- Biochimie et Physiologie Moléculaire des Plantes, CNRS/INRA/Université de Montpellier/SupAgro, Montpellier, France
| | - Diana Fernandez
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, 70297-400, Brazil; IRD, Cirad, Univ Montpellier, IPME, 911, Avenue Agropolis, 34394, Montpellier Cedex 5, France; National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brazil
| | - Maria Fatima Grossi-de-Sa
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, 70297-400, Brazil; Catholic University of Brasília, Brasília-DF, 71966-700, Brazil; National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brazil.
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12
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Zhao J, Mejias J, Quentin M, Chen Y, de Almeida-Engler J, Mao Z, Sun Q, Liu Q, Xie B, Abad P, Favery B, Jian H. The root-knot nematode effector MiPDI1 targets a stress-associated protein (SAP) to establish disease in Solanaceae and Arabidopsis. THE NEW PHYTOLOGIST 2020; 228:1417-1430. [PMID: 32542658 DOI: 10.1111/nph.16745] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 06/02/2020] [Indexed: 05/11/2023]
Abstract
Large amounts of effectors are secreted by the oesophageal glands of plant-parasitic nematodes, but their molecular mode of action remains largely unknown. We characterized a Meloidogyne incognita protein disulphide isomerase (PDI)-like effector protein (MiPDI1) that facilitates nematode parasitism. In situ hybridization showed that MiPDI1 was expressed specifically in the subventral glands of M. incognita. It was significantly upregulated during parasitic stages. Immunolocalization demonstrated MiPDI1 secretion in planta during nematode migration and within the feeding cells. Host-induced silencing of the MiPDI1 gene affected the ability of the nematode to infect the host, whereas MiPDI1 expression in Arabidopsis increased susceptibility to M. incognita, providing evidence for a key role of MiPDI1 in M. incognita parasitism. Yeast two-hybrid, bimolecular fluorescence complementation and coimmunoprecipitation assays showed that MiPDI1 interacted with a tomato stress-associated protein (SlSAP12) orthologous to the redox-regulated AtSAP12, which plays an important role in plant responses to abiotic and biotic stresses. SAP12 silencing or knocking out in Nicotiana benthamiana and Arabidopsis increased susceptibility to M. incognita. Our results suggest that MiPDI1 acts as a pathogenicity factor promoting disease by fine-tuning SAP-mediated responses at the interface of redox signalling, defence and stress acclimation in Solanaceae and Arabidopsis.
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Affiliation(s)
- Jianlong Zhao
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, 100193, China
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
- INRAE, CNRS, ISA, Université Côte d'Azur, Sophia Antipolis, F-06903, France
| | - Joffrey Mejias
- INRAE, CNRS, ISA, Université Côte d'Azur, Sophia Antipolis, F-06903, France
| | - Michaël Quentin
- INRAE, CNRS, ISA, Université Côte d'Azur, Sophia Antipolis, F-06903, France
| | - Yongpan Chen
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, 100193, China
- INRAE, CNRS, ISA, Université Côte d'Azur, Sophia Antipolis, F-06903, France
| | | | - Zhenchuan Mao
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
| | - Qinghua Sun
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
| | - Qian Liu
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, 100193, China
| | - Bingyan Xie
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Science, Beijing, 100081, China
| | - Pierre Abad
- INRAE, CNRS, ISA, Université Côte d'Azur, Sophia Antipolis, F-06903, France
| | - Bruno Favery
- INRAE, CNRS, ISA, Université Côte d'Azur, Sophia Antipolis, F-06903, France
| | - Heng Jian
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, 100193, China
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13
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Wixom AQ, Casavant NC, Sonnen TJ, Kuhl JC, Xiao F, Dandurand LM, Caplan AB. Initial responses of the trap-crop, Solanum sisymbriifolium, to Globodera pallida invasions. THE PLANT GENOME 2020; 13:e20016. [PMID: 33016605 DOI: 10.1002/tpg2.20016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 01/02/2020] [Accepted: 02/22/2020] [Indexed: 06/11/2023]
Abstract
Many researchers today are looking for mechanisms underlying plant defenses against nematodes by identifying differentially expressed genes in domesticated hosts. In order to provide a different perspective, we analyzed the root transcriptome of an undomesticated non-host species, Solanum sisymbriifolium Lamark (SSI) before and after Globodera pallida infection. Utilizing RNAseq analyses, we identified changes in the expression of 277 transcripts. Many of these genes were not annotated; however, the annotated set included peroxidases, reactive oxygen species-producing proteins, and regulators of cell death. Importantly, 60% of the nematode-responsive genes did not respond to physical damage to root tissues, or to exogenous treatments with either salicylic acid or methyl jasmonate. Based on this, we speculate that the majority of changes in SSI gene expression were promoted by either nematode effectors, pathogen-associated molecular patterns (PAMPs), or by exposure to untested endogenous signaling molecules such as ethylene, or by exposure to multiple stimuli. This study incorporates our findings into a model that accounts for part of this plant's unusual resistance to nematodes.
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Affiliation(s)
- Alexander Q Wixom
- Department of Plant Sciences, University of Idaho, Moscow, ID, 83844-2333, USA
| | - N Carol Casavant
- Department of Plant Sciences, University of Idaho, Moscow, ID, 83844-2333, USA
| | | | - Joseph C Kuhl
- Department of Plant Sciences, University of Idaho, Moscow, ID, 83844-2333, USA
| | - Fangming Xiao
- Department of Plant Sciences, University of Idaho, Moscow, ID, 83844-2333, USA
| | - Louise-Marie Dandurand
- Department of Entomology, Plant Pathology, and Nematology, University of Idaho, Moscow, ID, 83844-2329, USA
| | - Allan B Caplan
- Department of Plant Sciences, University of Idaho, Moscow, ID, 83844-2333, USA
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14
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Basso MF, Lourenço-Tessutti IT, Mendes RAG, Pinto CEM, Bournaud C, Gillet FX, Togawa RC, de Macedo LLP, de Almeida Engler J, Grossi-de-Sa MF. MiDaf16-like and MiSkn1-like gene families are reliable targets to develop biotechnological tools for the control and management of Meloidogyne incognita. Sci Rep 2020; 10:6991. [PMID: 32332904 PMCID: PMC7181638 DOI: 10.1038/s41598-020-63968-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 03/26/2020] [Indexed: 12/22/2022] Open
Abstract
Meloidogyne incognita is a plant-parasitic root-knot nematode (RKN, PPN) responsible for causing damage to several crops worldwide. In Caenorhabditis elegans, the DAF-16 and SKN-1 transcription factors (TFs) orchestrate aging, longevity, and defense responses to several stresses. Here, we report that MiDaf16-like1 and MiSkn1-like1, which are orthologous to DAF-16 and SKN-1 in C. elegans, and some of their targets, are modulated in M. incognita J2 during oxidative stress or plant parasitism. We used RNAi technology for the stable production of siRNAs in planta to downregulate the MiDaf16-like1 and MiSkn1-like1 genes of M. incognita during host plant parasitism. Arabidopsis thaliana and Nicotiana tabacum overexpressing a hairpin-derived dsRNA targeting these genes individually (single-gene silencing) or simultaneously (double-gene silencing) were generated. T2 plants were challenged with M. incognita and the number of eggs, galls, and J2, and the nematode reproduction factor (NRF) were evaluated. Our data indicate that MiDaf16-like1, MiSkn1-like1 and some genes from their networks are modulated in M. incognita J2 during oxidative stress or plant parasitism. Transgenic A. thaliana and N. tabacum plants with single- or double-gene silencing showed significant reductions in the numbers of eggs, J2, and galls, and in NRF. Additionally, the double-gene silencing plants had the highest resistance level. Gene expression assays confirmed the downregulation of the MiDaf16-like1 and MiSkn1-like1 TFs and defense genes in their networks during nematode parasitism in the transgenic plants. All these findings demonstrate that these two TFs are potential targets for the development of biotechnological tools for nematode control and management in economically important crops.
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Affiliation(s)
| | | | - Reneida Aparecida Godinho Mendes
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, 70297-400, Brazil
- Federal University of Brasília, Brasília-DF, 70910-900, Brazil
| | - Clidia Eduarda Moreira Pinto
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, 70297-400, Brazil
- Federal University of Brasília, Brasília-DF, 70910-900, Brazil
| | - Caroline Bournaud
- Université de Grenoble Alpes, CNRS, CEA, INRA, 38054, Grenoble, Cedex 9, France
| | | | | | | | | | - Maria Fatima Grossi-de-Sa
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, 70297-400, Brazil.
- Catholic University of Brasília, Brasília-DF, 71966-700, Brazil.
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15
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Ortega-Ortega Y, Carrasco-Castilla J, Juárez-Verdayes MA, Toscano-Morales R, Fonseca-García C, Nava N, Cárdenas L, Quinto C. Actin Depolymerizing Factor Modulates Rhizobial Infection and Nodule Organogenesis in Common Bean. Int J Mol Sci 2020; 21:ijms21061970. [PMID: 32183068 PMCID: PMC7139724 DOI: 10.3390/ijms21061970] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 03/09/2020] [Accepted: 03/11/2020] [Indexed: 12/28/2022] Open
Abstract
Actin plays a critical role in the rhizobium-legume symbiosis. Cytoskeletal rearrangements and changes in actin occur in response to Nod factors secreted by rhizobia during symbiotic interactions with legumes. These cytoskeletal rearrangements are mediated by diverse actin-binding proteins, such as actin depolymerization factors (ADFs). We examined the function of an ADF in the Phaseolus vulgaris-rhizobia symbiotic interaction (PvADFE). PvADFE was preferentially expressed in rhizobia-inoculated roots and nodules. PvADFE promoter activity was associated with root hairs harbouring growing infection threads, cortical cell divisions beneath root hairs, and vascular bundles in mature nodules. Silencing of PvADFE using RNA interference increased the number of infection threads in the transgenic roots, resulting in increased nodule number, nitrogen fixation activity, and average nodule diameter. Conversely, overexpression of PvADFE reduced the nodule number, nitrogen fixation activity, average nodule diameter, as well as NODULE INCEPTION (NIN) and EARLY NODULIN2 (ENOD2) transcript accumulation. Hence, changes in ADFE transcript levels affect rhizobial infection and nodulation, suggesting that ADFE is fine-tuning these processes.
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Affiliation(s)
- Yolanda Ortega-Ortega
- Departamento de Biociencias y Agrobiotecnología, Centro de Investigación en Química Aplicada-CONACYT, Saltillo 25294, Coahuila, Mexico;
| | - Janet Carrasco-Castilla
- Instituto Politécnico Nacional, Centro de Estudios Científicos y Tecnológicos 17 León, León 37358, Guanajuato, Mexico;
| | - Marco A. Juárez-Verdayes
- Departamento de Docencia, Universidad Autónoma Agraria Antonio Narro, Saltillo 25315, Coahuila, Mexico;
| | - Roberto Toscano-Morales
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA 95616, USA;
| | - Citlali Fonseca-García
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, UNAM, Cuernavaca 62210, Morelos, Mexico; (C.F.-G.); (N.N.); (L.C.)
| | - Noreide Nava
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, UNAM, Cuernavaca 62210, Morelos, Mexico; (C.F.-G.); (N.N.); (L.C.)
| | - Luis Cárdenas
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, UNAM, Cuernavaca 62210, Morelos, Mexico; (C.F.-G.); (N.N.); (L.C.)
| | - Carmen Quinto
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, UNAM, Cuernavaca 62210, Morelos, Mexico; (C.F.-G.); (N.N.); (L.C.)
- Correspondence:
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Cabral D, Banora MY, Antonino JD, Rodiuc N, Vieira P, Coelho RR, Chevalier C, Eekhout T, Engler G, De Veylder L, Grossi-de-Sa MF, de Almeida Engler J. The plant WEE1 kinase is involved in checkpoint control activation in nematode-induced galls. THE NEW PHYTOLOGIST 2020; 225:430-447. [PMID: 31505035 DOI: 10.1111/nph.16185] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 08/15/2019] [Indexed: 06/10/2023]
Abstract
Galls induced by plant-parasitic nematodes involve a hyperactivation of the plant mitotic and endocycle machinery for their profit. Dedifferentiation of host root cells includes drastic cellular and molecular readjustments. In such a background, potential DNA damage in the genome of gall cells is evident. We investigated whether DNA damage checkpoint activation followed by DNA repair occurred, or was eventually circumvented, in nematode-induced galls. Galls display transcriptional activation of the DNA damage checkpoint kinase WEE1, correlated with its protein localization in the nuclei. The promoter of the stress marker gene SMR7 was evaluated under the WEE1-knockout background. Drugs inducing DNA damage and a marker for DNA repair, PARP1, were used to understand the mechanisms for coping with DNA damage in galls. Our functional study revealed that gall cells lacking WEE1 conceivably entered mitosis prematurely, disturbing the cell cycle despite the loss of genome integrity. The disrupted nuclei phenotype in giant cells hinted at the accumulation of mitotic defects. In addition, WEE1-knockout in Arabidopsis and downregulation in tomato repressed infection and reproduction of root-knot nematodes. Together with data on DNA-damaging drugs, we suggest a conserved function for WEE1 in controlling G1/S cell cycle arrest in response to a replication defect in galls.
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Affiliation(s)
- Danila Cabral
- INRA, Université Côte d'Azur, CNRS, ISA, 06903, Sophia Antipolis, France
| | - Mohamed Youssef Banora
- Department of Plant Pathology, Faculty of Agriculture, Ain Shams University, PO Box 68, Hadayek Shoubra, 11241, Cairo, Egypt
- Department of Biology, Faculty of Science and Art-Khulais, University of Jeddah, Saudi Arabia
| | - José Dijair Antonino
- INRA, Université Côte d'Azur, CNRS, ISA, 06903, Sophia Antipolis, France
- Laboratório de Interação Molecular Planta-Praga, Embrapa Recursos Genéticos e Biotecnologia, PqEB, Av. W5 Norte Final, Brasília, DF, 70770-900, Brazil
- Departamento de Agronomia/Entomologia, Universidade Federal Rural de Pernambuco, Av. Dom Manoel de Medeiros S/N, Dois Irmãos,, Recife, PE, 521171-900, Brazil
| | - Natalia Rodiuc
- INRA, Université Côte d'Azur, CNRS, ISA, 06903, Sophia Antipolis, France
- Laboratório de Interação Molecular Planta-Praga, Embrapa Recursos Genéticos e Biotecnologia, PqEB, Av. W5 Norte Final, Brasília, DF, 70770-900, Brazil
| | - Paulo Vieira
- INRA, Université Côte d'Azur, CNRS, ISA, 06903, Sophia Antipolis, France
| | - Roberta R Coelho
- INRA, Université Côte d'Azur, CNRS, ISA, 06903, Sophia Antipolis, France
- Laboratório de Interação Molecular Planta-Praga, Embrapa Recursos Genéticos e Biotecnologia, PqEB, Av. W5 Norte Final, Brasília, DF, 70770-900, Brazil
| | - Christian Chevalier
- UMR1332 BFP, INRA, University of Bordeaux, 33882, Villenave d'Ornon Cedex, France
| | - Thomas Eekhout
- Department of Plant Biotechnology and Genetics, Ghent University, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052, Ghent, Belgium
| | - Gilbert Engler
- INRA, Université Côte d'Azur, CNRS, ISA, 06903, Sophia Antipolis, France
| | - Lieven De Veylder
- Department of Plant Biotechnology and Genetics, Ghent University, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052, Ghent, Belgium
| | - Maria Fatima Grossi-de-Sa
- Laboratório de Interação Molecular Planta-Praga, Embrapa Recursos Genéticos e Biotecnologia, PqEB, Av. W5 Norte Final, Brasília, DF, 70770-900, Brazil
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17
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Meidani C, Ntalli NG, Giannoutsou E, Adamakis IDS. Cell Wall Modifications in Giant Cells Induced by the Plant Parasitic Nematode Meloidogyne incognita in Wild-Type (Col-0) and the fra2 Arabidopsis thaliana Katanin Mutant. Int J Mol Sci 2019; 20:E5465. [PMID: 31684028 PMCID: PMC6862268 DOI: 10.3390/ijms20215465] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 12/21/2022] Open
Abstract
Meloidogyne incognita is a root knot nematode (RKN) species which is among the most notoriously unmanageable crop pests with a wide host range. It inhabits plants and induces unique feeding site structures within host roots, known as giant cells (GCs). The cell walls of the GCs undergo the process of both thickening and loosening to allow expansion and finally support nutrient uptake by the nematode. In this study, a comparative in situ analysis of cell wall polysaccharides in the GCs of wild-type Col-0 and the microtubule-defective fra2 katanin mutant, both infected with M. incognita has been carried out. The fra2 mutant had an increased infection rate. Moreover, fra2 roots exhibited a differential pectin and hemicellulose distribution when compared to Col-0 probably mirroring the fra2 root developmental defects. Features of fra2 GC walls include the presence of high-esterified pectic homogalacturonan and pectic arabinan, possibly to compensate for the reduced levels of callose, which was omnipresent in GCs of Col-0. Katanin severing of microtubules seems important in plant defense against M. incognita, with the nematode, however, to be nonchalant about this "katanin deficiency" and eventually induce the necessary GC cell wall modifications to establish a feeding site.
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Affiliation(s)
- Christianna Meidani
- Department of Botany, Faculty of Biology, National and Kapodistrian University of Athens, 157 84 Athens, Greece.
| | - Nikoletta G Ntalli
- Department of Pesticides Control and Phytopharmacy, Benaki Phytopathological Institute, 14561 Athens, Greece.
| | - Eleni Giannoutsou
- Department of Botany, Faculty of Biology, National and Kapodistrian University of Athens, 157 84 Athens, Greece.
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18
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Zhao J, Li L, Liu Q, Liu P, Li S, Yang D, Chen Y, Pagnotta S, Favery B, Abad P, Jian H. A MIF-like effector suppresses plant immunity and facilitates nematode parasitism by interacting with plant annexins. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:5943-5958. [PMID: 31365744 PMCID: PMC6812717 DOI: 10.1093/jxb/erz348] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 07/22/2019] [Indexed: 05/20/2023]
Abstract
Plant-parasitic nematodes secrete numerous effectors to facilitate parasitism, but detailed functions of nematode effectors and their plant targets remain largely unknown. Here, we characterized four macrophage migration inhibitory factors (MIFs) in Meloidogyne incognita resembling the MIFs secreted by human and animal parasites. Transcriptional data showed MiMIFs are up-regulated in parasitism. Immunolocalization provided evidence that MiMIF proteins are secreted from the nematode hypodermis to the parasite surface, detected in plant tissues and giant cells. In planta MiMIFs RNA interference in Arabidopsis decreased infection and nematode reproduction. Transient expression of MiMIF-2 could suppress Bax- and RBP1/Gpa2-induced cell death. MiMIF-2 ectopic expression led to higher levels of Arabidopsis susceptibility, suppressed immune responses triggered by flg22, and impaired [Ca2+]cyt influx induced by H2O2. The immunoprecipitation of MiMIF-2-interacting proteins, followed by co-immunoprecipitation and bimolecular fluorescence complementation validations, revealed specific interactions between MiMIF-2 and two Arabidopsis annexins, AnnAt1 and AnnAt4, involved in the transport of calcium ions, stress responses, and signal transduction. Suppression of expression or overexpression of these annexins modified nematode infection. Our results provide functional evidence that nematode effectors secreted from hypodermis to the parasite cuticle surface target host proteins and M. incognita uses MiMIFs to promote parasitism by interfering with the annexin-mediated plant immune responses.
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Affiliation(s)
- Jianlong Zhao
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Lijuan Li
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Qian Liu
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Pei Liu
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Shuang Li
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Dan Yang
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Yongpan Chen
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Sophie Pagnotta
- Centre Commun de Microscopie Appliquée (CCMA), Université de Nice Sophia Antipolis, Nice, France
| | | | - Pierre Abad
- Université Côte d’Azur, INRA, CNRS, ISA, France
| | - Heng Jian
- Department of Plant Pathology and Key Laboratory of Pest Monitoring and Green Management of the Ministry of Agriculture, China Agricultural University, Beijing, China
- Correspondence:
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Genre A, Timmers T. The symbiotic role of the actin filament cytoskeleton. THE NEW PHYTOLOGIST 2019; 221:611-613. [PMID: 30569615 DOI: 10.1111/nph.15506] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- Andrea Genre
- Department of Life Sciences and Systems Biology, University of Turin, 10125, Torino, Italy
| | - Ton Timmers
- LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, 31326, France
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20
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Naalden D, Haegeman A, de Almeida‐Engler J, Birhane Eshetu F, Bauters L, Gheysen G. The Meloidogyne graminicola effector Mg16820 is secreted in the apoplast and cytoplasm to suppress plant host defense responses. MOLECULAR PLANT PATHOLOGY 2018; 19:2416-2430. [PMID: 30011122 PMCID: PMC6638014 DOI: 10.1111/mpp.12719] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 06/19/2018] [Accepted: 06/19/2018] [Indexed: 05/06/2023]
Abstract
On invasion of roots, plant-parasitic nematodes secrete effectors to manipulate the cellular regulation of the host to promote parasitism. The root-knot nematode Meloidogyne graminicola is one of the most damaging nematodes of rice. Here, we identified a novel effector of this nematode, named Mg16820, expressed in the nematode subventral glands. We localized the Mg16820 effector in the apoplast during the migration phase of the second-stage juvenile in rice roots. In addition, during early development of the feeding site, Mg16820 was localized in giant cells, where it accumulated in the cytoplasm and the nucleus. Using transient expression in Nicotiana benthamiana leaves, we demonstrated that Mg16820 directed to the apoplast was able to suppress flg22-induced reactive oxygen species production. In addition, expression of Mg16820 in the cytoplasm resulted in the suppression of the R2/Avr2- and Mi-1.2-induced hypersensitive response. A potential target protein of Mg16820 identified with the yeast two-hybrid system was the dehydration stress-inducible protein 1 (DIP1). Bimolecular fluorescence complementation resulted in a strong signal in the nucleus. DIP1 has been described as an abscisic acid (ABA)-responsive gene and ABA is involved in the biotic and abiotic stress response. Our results demonstrate that Mg16820 is able to act in two cellular compartments as an immune suppressor and targets a protein involved in the stress response, therefore indicating an important role for this effector in parasitism.
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Affiliation(s)
- Diana Naalden
- Department of Biotechnology, Faculty of Bioscience EngineeringGhent UniversityCoupure links 6539000GhentBelgium
| | - Annelies Haegeman
- Department of Biotechnology, Faculty of Bioscience EngineeringGhent UniversityCoupure links 6539000GhentBelgium
- Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Plant Sciences UnitCaritasstraat 399090MelleBelgium
| | | | - Firehiwot Birhane Eshetu
- Department of Biotechnology, Faculty of Bioscience EngineeringGhent UniversityCoupure links 6539000GhentBelgium
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI)University of PretoriaPretoria0002South Africa
| | - Lander Bauters
- Department of Biotechnology, Faculty of Bioscience EngineeringGhent UniversityCoupure links 6539000GhentBelgium
| | - Godelieve Gheysen
- Department of Biotechnology, Faculty of Bioscience EngineeringGhent UniversityCoupure links 6539000GhentBelgium
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21
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Functions of Flavonoids in Plant⁻Nematode Interactions. PLANTS 2018; 7:plants7040085. [PMID: 30326617 PMCID: PMC6313853 DOI: 10.3390/plants7040085] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/12/2018] [Accepted: 10/13/2018] [Indexed: 11/21/2022]
Abstract
Most land plants can become infected by plant parasitic nematodes in the field. Plant parasitic nematodes can be free-living or endoparasitic, and they usually infect plant roots. Most damaging are endoparasites, which form feeding sites inside plant roots that damage the root system and redirect nutrients towards the parasite. This process involves developmental changes to the root in parallel with the induction of defense responses. Plant flavonoids are secondary metabolites that have roles in both root development and plant defense responses against a range of microorganisms. Here, we review our current knowledge of the roles of flavonoids in the interactions between plants and plant parasitic nematodes. Flavonoids are induced during nematode infection in plant roots, and more highly so in resistant compared with susceptible plant cultivars, but many of their functions remain unclear. Flavonoids have been shown to alter feeding site development to some extent, but so far have not been found to be essential for root–parasite interactions. However, they likely contribute to chemotactic attraction or repulsion of nematodes towards or away from roots and might help in the general plant defense against nematodes. Certain flavonoids have also been associated with functions in nematode reproduction, although the mechanism remains unknown. Much remains to be examined in this area, especially under field conditions.
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22
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Barbosa EA, Bonfim MF, Bloch C, Engler G, Rocha T, de Almeida Engler J. Imaging Mass Spectrometry of Endogenous Polypeptides and Secondary Metabolites from Galls Induced by Root-Knot Nematodes in Tomato Roots. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2018; 31:1048-1059. [PMID: 29663868 DOI: 10.1094/mpmi-02-18-0049-r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nematodes are devastating pests that infect most cultivated plant species and cause considerable agricultural losses worldwide. The understanding of metabolic adjustments induced during plant-nematode interaction is crucial to generate resistant plants or to select more efficient molecules to fight against this pest. Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) has been used herein for in situ detection and mapping endogenous polypeptides and secondary metabolites from nematode-induced gall tissue. One of the major critical features of this technique is sample preparation; mainly, the generation of intact sections of plant cells with their rigid cell walls and vacuolated cytoplasm. Our experimental settings allowed us to obtain sections without contamination of exogenous ions or diffusion of molecules and to map the differential presence of low and high molecular weight ions in uninfected roots compared with nematode-induced galls. We predict the presence of lipids in both uninfected roots and galls, which was validated by MALDI time-of-flight tandem mass spectrometry and high-resolution mass spectrometry analysis of lipid extracts. Based on the isotopic ion distribution profile, both esters and glycerophospholipids were predicted compounds and may be playing an important role in gall development. Our results indicate that the MALDI-MSI technology is a promising tool to identify secondary metabolites as well as peptides and proteins in complex plant tissues like galls to decipher molecular processes responsible for infection and maintenance of these feeding sites during nematode parasitism.
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Affiliation(s)
- Eder Alves Barbosa
- 1 Laboratório de espectrometria de massa, Embrapa Recursos Genéticos e Biotecnologia, PqEB, 70770-900, Brasília-DF, Brazil
- 2 Laboratório de Síntese e Análise de Biomoléculas, Instituto de Química, Universidade de Brasília, 70910-900, Brasília-DF, Brazil
| | - Mauro Ferreira Bonfim
- 2 Laboratório de Síntese e Análise de Biomoléculas, Instituto de Química, Universidade de Brasília, 70910-900, Brasília-DF, Brazil
- 3 Laboratório de Interação Molecular Planta-Praga, Embrapa Recursos Genéticos e Biotecnologia, PqEB; and
| | - Carlos Bloch
- 1 Laboratório de espectrometria de massa, Embrapa Recursos Genéticos e Biotecnologia, PqEB, 70770-900, Brasília-DF, Brazil
| | - Gilbert Engler
- 4 INRA, Université Côte d'Azur, CNRS, ISA, 06903, Sophia Antipolis, France
| | - Thales Rocha
- 3 Laboratório de Interação Molecular Planta-Praga, Embrapa Recursos Genéticos e Biotecnologia, PqEB; and
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23
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Różańska E, Czarnocka W, Baranowski Ł, Mielecki J, de Almeida Engler J, Sobczak M. Expression of both Arabidopsis γ-tubulin genes is essential for development of a functional syncytium induced by Heterodera schachtii. PLANT CELL REPORTS 2018; 37:1279-1292. [PMID: 29947953 PMCID: PMC6096582 DOI: 10.1007/s00299-018-2312-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 06/04/2018] [Indexed: 05/23/2023]
Abstract
After initial up-regulation, expression of TUBG1 and TUBG2 is significantly down-regulated in mature syncytia, but lack of expression of either of γ-tubulin genes reduces numbers of nematode infections and developing females. Infective second stage juveniles of sedentary plant parasitic nematode Heterodera schachtii invade the root vascular tissue and induce a feeding site, named syncytium, formed as a result of cell hypertrophy and partial cell wall dissolution leading to a multinucleate state. Syncytium formation and maintenance involves a molecular interplay between the plant host and the developing juveniles leading to rearrangements and fragmentation of the plant cytoskeleton. In this study, we investigated the role of two Arabidopsis γ-tubulin genes (TUBG1 and TUBG2), involved in MTs nucleation during syncytium development. Expression analysis revealed that both γ-tubulin's transcript levels changed during syncytium development and after initial up-regulation (1-3 dpi) they were significantly down-regulated in 7, 10 and 15 dpi syncytia. Moreover, TUBG1 and TUBG2 showed distinct immunolocalization patterns in uninfected roots and syncytia. Although no severe changes in syncytium anatomy and ultrastructure in tubg1-1 and tubg2-1 mutants were observed compared to syncytia induced in wild-type plants, nematode infection assays revealed reduced numbers of infecting juveniles and developed female nematodes in mutant lines. Our results indicate that the expression of both TUBG1 and TUBG2 genes, although generally down-regulated in mature syncytia, is essential for successful root infection, development of functional syncytium and nematode maturation.
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Affiliation(s)
- Elżbieta Różańska
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776, Warsaw, Poland
| | - Weronika Czarnocka
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776, Warsaw, Poland
| | - Łukasz Baranowski
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776, Warsaw, Poland
| | - Jakub Mielecki
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences-SGGW, Warsaw, Poland
| | | | - Mirosław Sobczak
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776, Warsaw, Poland.
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24
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Leelarasamee N, Zhang L, Gleason C. The root-knot nematode effector MiPFN3 disrupts plant actin filaments and promotes parasitism. PLoS Pathog 2018; 14:e1006947. [PMID: 29543900 PMCID: PMC5871015 DOI: 10.1371/journal.ppat.1006947] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 03/27/2018] [Accepted: 02/21/2018] [Indexed: 12/03/2022] Open
Abstract
Root-knot nematodes secrete effectors that manipulate their host plant cells so that the nematode can successfully establish feeding sites and complete its lifecycle. The root-knot nematode feeding structures, their “giant cells,” undergo extensive cytoskeletal remodeling. Previous cytological studies have shown the cytoplasmic actin within the feeding sites looks diffuse. In an effort to study root-knot nematode effectors that are involved in giant cell organogenesis, we have identified a nematode effector called MiPFN3 (Meloidogyne incognita Profilin 3). MiPFN3 is transcriptionally up-regulated in the juvenile stage of the nematode. In situ hybridization experiments showed that MiPFN3 transcribed in the nematode subventral glands, where it can be secreted by the nematode stylet into the plant. Moreover, Arabidopsis plants that heterologously expressed MiPFN3 were more susceptible to root-knot nematodes, indicating that MiPFN3 promotes nematode parasitism. Since profilin proteins can bind and sequester actin monomers, we investigated the function of MiPFN3 in relation to actin. Our results show that MiPFN3 suppressed the aberrant plant growth phenotype caused by the misexpression of reproductive actin (AtACT1) in transgenic plants. In addition, it disrupted actin polymerization in an in vitro assay, and it reduced the filamentous actin network when expressed in Arabidopsis protoplasts. Over a decade ago, cytological studies showed that the cytoplasmic actin within nematode giant cells looked fragmented. Here we provide the first evidence that the nematode is secreting an effector that has significant, direct effects on the plant’s actin cytoskeleton. Root-knot nematodes are microscopic plant pests that infect plant roots and significantly reduce yields of many crop plants. The nematodes enter the plant roots and modify plant cells into complex, multinuclear feeding sites called giant cells. The formation and maintenance of giant cells is critical to nematode survival. During giant cell organogenesis, the progenitor plant cells undergo many morphological changes, including a re-organization of the cytoplasmic actin cytoskeleton. As a result, the giant cell cytoplasmic actin appears fragmented and disorganized. Plant cells can regulate their actin filament assembly, in part, through the expression of actin binding proteins such as profilins. Here we show that infectious nematode juveniles express a profilin called MiPFN3. Expression of MiPFN3 in Arabidopsis plants made the plants more susceptible to root-knot nematodes, indicating that MiPFN3 acts as an effector that aids parasitism. We show evidence that the expression MiPFN3 in plant cells causes the fragmentation of plant actin filaments. The work here demonstrates that nematode effector MiPFN3 can directly affect plant actin filaments, whose reorganization is necessary for giant cell formation.
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Affiliation(s)
- Natthanon Leelarasamee
- Department of Plant Molecular Biology and Physiology, Albrecht von Haller Institute, Georg August University, Göttingen, Germany
| | - Lei Zhang
- Department of Plant Pathology, Washington State University, Pullman, WA, United States of America
| | - Cynthia Gleason
- Department of Plant Molecular Biology and Physiology, Albrecht von Haller Institute, Georg August University, Göttingen, Germany
- Department of Plant Pathology, Washington State University, Pullman, WA, United States of America
- * E-mail:
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25
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van Gisbergen PAC, Wu SZ, Chang M, Pattavina KA, Bartlett ME, Bezanilla M. An ancient Sec10-formin fusion provides insights into actin-mediated regulation of exocytosis. J Cell Biol 2018; 217:945-957. [PMID: 29374070 PMCID: PMC5839782 DOI: 10.1083/jcb.201705084] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 12/21/2017] [Accepted: 01/08/2018] [Indexed: 11/22/2022] Open
Abstract
Interactions between actin nucleators and the exocyst in yeast and mammals control membrane remodeling. van Gisbergen et al. now describe For1F, a fusion of an exocyst subunit (Sec10) and an actin nucleation factor (formin), retained in the moss lineage for more than 170 million years, which provides unique insight into the regulation of exocytosis by actin. Exocytosis, facilitated by the exocyst, is fundamentally important for remodeling cell walls and membranes. Here, we analyzed For1F, a novel gene that encodes a fusion of an exocyst subunit (Sec10) and an actin nucleation factor (formin). We showed that the fusion occurred early in moss evolution and has been retained for more than 170 million years. In Physcomitrella patens, For1F is essential, and the expressed protein is a fusion of Sec10 and formin. Reduction of For1F or actin filaments inhibits exocytosis, and For1F dynamically associates with Sec6, another exocyst subunit, in an actin-dependent manner. Complementation experiments demonstrate that constitutive expression of either half of the gene or the paralogous Sec10b rescues loss of For1F, suggesting that fusion of the two domains is not essential, consistent with findings in yeast, where formin and the exocyst are linked noncovalently. Although not essential, the fusion may have had selective advantages and provides a unique opportunity to probe actin regulation of exocytosis.
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Affiliation(s)
| | - Shu-Zon Wu
- Biological Sciences Department, Dartmouth College, Hanover, NH
| | - Mingqin Chang
- Biological Sciences Department, Dartmouth College, Hanover, NH.,Plant Biology Graduate Program, University of Massachusetts Amherst, Amherst, MA
| | - Kelli A Pattavina
- Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst, Amherst, MA
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26
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Mei Y, Wright KM, Haegeman A, Bauters L, Diaz-Granados A, Goverse A, Gheysen G, Jones JT, Mantelin S. The Globodera pallida SPRYSEC Effector GpSPRY-414-2 That Suppresses Plant Defenses Targets a Regulatory Component of the Dynamic Microtubule Network. FRONTIERS IN PLANT SCIENCE 2018; 9:1019. [PMID: 30050557 PMCID: PMC6052128 DOI: 10.3389/fpls.2018.01019] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 06/22/2018] [Indexed: 05/09/2023]
Abstract
The white potato cyst nematode, Globodera pallida, is an obligate biotrophic pathogen of a limited number of Solanaceous plants. Like other plant pathogens, G. pallida deploys effectors into its host that manipulate the plant to the benefit of the nematode. Genome analysis has led to the identification of large numbers of candidate effectors from this nematode, including the cyst nematode-specific SPRYSEC proteins. These are a secreted subset of a hugely expanded gene family encoding SPRY domain-containing proteins, many of which remain to be characterized. We investigated the function of one of these SPRYSEC effector candidates, GpSPRY-414-2. Expression of the gene encoding GpSPRY-414-2 is restricted to the dorsal pharyngeal gland cell and reducing its expression in G. pallida infective second stage juveniles using RNA interference causes a reduction in parasitic success on potato. Transient expression assays in Nicotiana benthamiana indicated that GpSPRY-414-2 disrupts plant defenses. It specifically suppresses effector-triggered immunity (ETI) induced by co-expression of the Gpa2 resistance gene and its cognate avirulence factor RBP-1. It also causes a reduction in the production of reactive oxygen species triggered by exposure of plants to the bacterial flagellin epitope flg22. Yeast two-hybrid screening identified a potato cytoplasmic linker protein (CLIP)-associated protein (StCLASP) as a host target of GpSPRY-414-2. The two proteins co-localize in planta at the microtubules. CLASPs are members of a conserved class of microtubule-associated proteins that contribute to microtubule stability and growth. However, disruption of the microtubule network does not prevent suppression of ETI by GpSPRY-414-2 nor the interaction of the effector with its host target. Besides, GpSPRY-414-2 stabilizes its target while effector dimerization and the formation of high molecular weight protein complexes including GpSPRY-414-2 are prompted in the presence of the StCLASP. These data indicate that the nematode effector GpSPRY-414-2 targets the microtubules to facilitate infection.
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Affiliation(s)
- Yuanyuan Mei
- Dundee Effector Consortium, Cell and Molecular Sciences Group, The James Hutton Institute, Dundee, United Kingdom
- Faculty of Bioscience Engineering, Department of Biotechnology, Ghent University, Ghent, Belgium
| | - Kathryn M. Wright
- Dundee Effector Consortium, Cell and Molecular Sciences Group, The James Hutton Institute, Dundee, United Kingdom
| | - Annelies Haegeman
- Faculty of Bioscience Engineering, Department of Biotechnology, Ghent University, Ghent, Belgium
| | - Lander Bauters
- Faculty of Bioscience Engineering, Department of Biotechnology, Ghent University, Ghent, Belgium
| | - Amalia Diaz-Granados
- Laboratory of Nematology, Department of Plant Sciences, Wageningen University, Wageningen, Netherlands
| | - Aska Goverse
- Laboratory of Nematology, Department of Plant Sciences, Wageningen University, Wageningen, Netherlands
| | - Godelieve Gheysen
- Faculty of Bioscience Engineering, Department of Biotechnology, Ghent University, Ghent, Belgium
| | - John T. Jones
- Dundee Effector Consortium, Cell and Molecular Sciences Group, The James Hutton Institute, Dundee, United Kingdom
- School of Biology, University of St Andrews, St Andrews, United Kingdom
| | - Sophie Mantelin
- Dundee Effector Consortium, Cell and Molecular Sciences Group, The James Hutton Institute, Dundee, United Kingdom
- *Correspondence: Sophie Mantelin
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Palomares-Rius JE, Escobar C, Cabrera J, Vovlas A, Castillo P. Anatomical Alterations in Plant Tissues Induced by Plant-Parasitic Nematodes. FRONTIERS IN PLANT SCIENCE 2017; 8:1987. [PMID: 29201038 PMCID: PMC5697168 DOI: 10.3389/fpls.2017.01987] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 11/03/2017] [Indexed: 05/08/2023]
Abstract
Plant-parasitic nematodes (PPNs) interact with plants in different ways, for example, through subtle feeding behavior, migrating destructively through infected tissues, or acting as virus-vectors for nepoviruses. They are all obligate biotrophic parasites as they derive their nutrients from living cells which they modify using pharyngeal gland secretions prior to food ingestion. Some of them can also shield themselves against plant defenses to sustain a relatively long lasting interaction while feeding. This paper is centered on cell types or organs that are newly induced in plants during PPN parasitism, including recent approaches to their study based on molecular biology combined with cell biology-histopathology. This issue has already been reviewed extensively for major PPNs (i.e., root-knot or cyst nematodes), but not for other genera (viz. Nacobbus aberrans, Rotylenchulus spp.). PPNs have evolved with plants and this co-evolution process has allowed the induction of new types of plant cells necessary for their parasitism. There are four basic types of feeding cells: (i) non-hypertrophied nurse cells; (ii) single giant cells; (iii) syncytia; and (iv) coenocytes. Variations in the structure of these cells within each group are also present between some genera depending on the nematode species viz. Meloidogyne or Rotylenchulus. This variability of feeding sites may be related in some way to PPN life style (migratory ectoparasites, sedentary ectoparasites, migratory ecto-endoparasites, migratory endoparasites, or sedentary endoparasites). Apart from their co-evolution with plants, the response of plant cells and roots are closely related to feeding behavior, the anatomy of the nematode (mainly stylet size, which could reach different types of cells in the plant), and the secretory fluids produced in the pharyngeal glands. These secretory fluids are injected through the stylet into perforated cells where they modify plant cytoplasm prior to food removal. Some species do not produce specialized feeding sites (viz. Ditylenchus, Subanguina), but may develop a specialized modification of the root system (e.g., unspecialized root galls or a profusion of roots). This review introduces new data on cell types and plant organs stimulated by PPNs using sources varying from traditional histopathology to new holistic methodologies.
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Affiliation(s)
- Juan E. Palomares-Rius
- Department of Crop Protection, Institute for Sustainable Agriculture (CSIC), Córdoba, Spain
| | - Carolina Escobar
- Plant Biotechnology and Molecular Biology Group, University of Castilla La Mancha, Toledo, Spain
| | - Javier Cabrera
- Plant Biotechnology and Molecular Biology Group, University of Castilla La Mancha, Toledo, Spain
| | | | - Pablo Castillo
- Department of Crop Protection, Institute for Sustainable Agriculture (CSIC), Córdoba, Spain
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Ohtsu M, Sato Y, Kurihara D, Suzaki T, Kawaguchi M, Maruyama D, Higashiyama T. Spatiotemporal deep imaging of syncytium induced by the soybean cyst nematode Heterodera glycines. PROTOPLASMA 2017; 254:2107-2115. [PMID: 28343256 DOI: 10.1007/s00709-017-1105-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Accepted: 03/13/2017] [Indexed: 05/17/2023]
Abstract
Parasite infections cause dramatic anatomical and ultrastructural changes in host plants. Cyst nematodes are parasites that invade host roots and induce a specific feeding structure called a syncytium. A syncytium is a large multinucleate cell formed by cell wall dissolution-mediated cell fusion. The soybean cyst nematode (SCN), Heterodera glycines, is a major soybean pathogen. To investigate SCN infection and the syncytium structure, we established an in planta deep imaging system using a clearing solution ClearSee and two-photon excitation microscopy (2PEM). Using this system, we found that several cells were incorporated into the syncytium; the nuclei increased in size and the cell wall openings began to be visible at 2 days after inoculation (DAI). Moreover, at 14 DAI, in the syncytium developed in the cortex, there were thickened concave cell wall pillars that resembled "Parthenon pillars." In contrast, there were many thick board-like cell walls and rarely Parthenon pillars in the syncytium developed in the stele. We revealed that the syncytia were classified into two types based on the pattern of the cell wall structures, which appeared to be determined by the position of the syncytium inside roots. Our results provide new insights into the developmental process of syncytium induced by cyst nematode and a better understanding of the three-dimensional structure of the syncytium in host roots.
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Affiliation(s)
- Mina Ohtsu
- Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan.
| | - Yoshikatsu Sato
- Institute of Transformative Bio-Molecules (ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8601, Japan
| | - Daisuke Kurihara
- Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan
- JST ERATO Higashiyama Live-Holonics Project, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan
| | - Takuya Suzaki
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Masayoshi Kawaguchi
- Division of Symbiotic Systems, National Institute for Basic Biology (NIBB), Okazaki, Aichi, 444-8585, Japan
| | - Daisuke Maruyama
- Kihara Institute for Biological Research, Yokohama City University, 641-12 Maioka-cho, Totsuka-ku, Yokohama, Kanagawa, 244-0813, Japan
| | - Tetsuya Higashiyama
- Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan
- Institute of Transformative Bio-Molecules (ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8601, Japan
- JST ERATO Higashiyama Live-Holonics Project, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan
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Elucidation of the compatible interaction between banana and Meloidogyne incognita via high-throughput proteome profiling. PLoS One 2017; 12:e0178438. [PMID: 28575037 PMCID: PMC5456091 DOI: 10.1371/journal.pone.0178438] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 05/12/2017] [Indexed: 12/16/2022] Open
Abstract
With a diverse host range, Meloidogyne incognita (root-knot nematode) is listed as one of the most economically important obligate parasites of agriculture. This nematode species establishes permanent feeding sites in plant root systems soon after infestation. A compatible host-nematode interaction triggers a cascade of morphological and physiological process disruptions of the host, leading to pathogenesis. Such disruption is reflected by altered gene expression in affected cells, detectable using molecular approaches. We employed a high-throughput proteomics approach to elucidate the events involved in a compatible banana- M. incognita interaction. This study serves as the first crucial step in developing natural banana resistance for the purpose of biological-based nematode management programme. We successfully profiled 114 Grand naine root proteins involved in the interaction with M. incognita at the 30th- and 60th- day after inoculation (dai). The abundance of proteins involved in fundamental biological processes, cellular component organisation and stress responses were significantly altered in inoculated root samples. In addition, the abundance of proteins in pathways associated with defence and giant cell maintenance in plants such as phenylpropanoid biosynthesis, glycolysis and citrate cycle were also implicated by the infestation.
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Clevenger J, Chu Y, Arrais Guimaraes L, Maia T, Bertioli D, Leal-Bertioli S, Timper P, Holbrook CC, Ozias-Akins P. Gene expression profiling describes the genetic regulation of Meloidogyne arenaria resistance in Arachis hypogaea and reveals a candidate gene for resistance. Sci Rep 2017; 7:1317. [PMID: 28465503 PMCID: PMC5430994 DOI: 10.1038/s41598-017-00971-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 03/20/2017] [Indexed: 11/10/2022] Open
Abstract
Resistance to root-knot nematode was introgressed into cultivated peanut Arachis hypogaea from a wild peanut relative, A. cardenasii and previously mapped to chromosome A09. The highly resistant recombinant inbred RIL 46 and moderately resistant RIL 48 were selected from a population with cv. Gregory (susceptible) and Tifguard (resistant) as female and male parents, respectively. RNA-seq analysis was performed on these four genotypes using root tissue harvested from root-knot nematode infected plants at 0, 3, 7 days after inoculation. Differential gene expression analysis provides evidence that root-knot nematodes modulate biological pathways involved in plant hormone, defense, cell signaling, cytoskeleton and cell wall metabolism in a susceptible reaction. Corresponding to resistance reaction, an effector-induced-immune response mediated by an R-gene was identified in Tifguard. Mapping of the introgressed region indicated that 92% of linkage group A09 was of A. cardenasii origin in Tifguard. RIL46 and RIL 48 possessed 3.6% and 83.5% of the introgression on A09, respectively. Within the small introgressed region carried by RIL 46, a constitutively expressed TIR-NBS-LRR gene was identified as the candidate for nematode resistance. Potential defense responsive pathways include effector endocytosis through clathrin-coated vesicle trafficking, defense signaling through membrane lipid metabolism and mucilage production.
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Affiliation(s)
- Josh Clevenger
- Department of Horticulture and Institute of Plant Breeding, Genetics & Genomics, The University of Georgia, Tifton, GA, 31793, USA
| | - Ye Chu
- Department of Horticulture and Institute of Plant Breeding, Genetics & Genomics, The University of Georgia, Tifton, GA, 31793, USA
| | - Larissa Arrais Guimaraes
- Department of Horticulture and Institute of Plant Breeding, Genetics & Genomics, The University of Georgia, Tifton, GA, 31793, USA
| | - Thiago Maia
- Department of Horticulture and Institute of Plant Breeding, Genetics & Genomics, The University of Georgia, Tifton, GA, 31793, USA
| | - David Bertioli
- Center for Applied Genetic Technologies and Institute of Plant Breeding, Genetics & Genomics, The University of Georgia, Athens, GA, 30602, USA
- University of Brasília, Institute of Biological Sciences, Campus Darcy Ribeiro, 70910-900, Brasília, DF, Brazil
| | - Soraya Leal-Bertioli
- Center for Applied Genetic Technologies and Institute of Plant Breeding, Genetics & Genomics, The University of Georgia, Athens, GA, 30602, USA
- Embrapa Genetic Resources and Biotechnology, 70770-917, Brasília, DF, Brazil
| | | | | | - Peggy Ozias-Akins
- Department of Horticulture and Institute of Plant Breeding, Genetics & Genomics, The University of Georgia, Tifton, GA, 31793, USA.
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31
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Inada N. Plant actin depolymerizing factor: actin microfilament disassembly and more. JOURNAL OF PLANT RESEARCH 2017; 130:227-238. [PMID: 28044231 PMCID: PMC5897475 DOI: 10.1007/s10265-016-0899-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 11/14/2016] [Indexed: 05/19/2023]
Abstract
ACTIN DEPOLYMERIZING FACTOR (ADF) is a conserved protein among eukaryotes. The main function of ADF is the severing and depolymerizing filamentous actin (F-actin), thus regulating F-actin organization and dynamics and contributing to growth and development of the organisms. Mammalian genomes contain only a few ADF genes, whereas angiosperm plants have acquired an expanding number of ADFs, resulting in the differentiation of physiological functions. Recent studies have revealed functions of ADFs in plant growth and development, and various abiotic and biotic stress responses. In biotic stress responses, ADFs are involved in both susceptibility and resistance, depending on the pathogens. Furthermore, recent studies have highlighted a new role of ADF in the nucleus, possibly in the regulation of gene expression. In this review, I will summarize the current status of plant ADF research and discuss future research directions.
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Affiliation(s)
- Noriko Inada
- The Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma-shi, Nara, 630-0192, Japan.
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32
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Antonino de Souza Junior JD, Pierre O, Coelho RR, Grossi-de-Sa MF, Engler G, de Almeida Engler J. Application of Nuclear Volume Measurements to Comprehend the Cell Cycle in Root-Knot Nematode-Induced Giant Cells. FRONTIERS IN PLANT SCIENCE 2017; 8:961. [PMID: 28659939 PMCID: PMC5466992 DOI: 10.3389/fpls.2017.00961] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 05/22/2017] [Indexed: 05/12/2023]
Abstract
Root-knot nematodes induce galls that contain giant-feeding cells harboring multiple enlarged nuclei within the roots of host plants. It is recognized that the cell cycle plays an essential role in the set-up of a peculiar nuclear organization that seemingly steers nematode feeding site induction and development. Functional studies of a large set of cell cycle genes in transgenic lines of the model host Arabidopsis thaliana have contributed to better understand the role of the cell cycle components and their implication in the establishment of functional galls. Mitotic activity mainly occurs during the initial stages of gall development and is followed by an intense endoreduplication phase imperative to produce giant-feeding cells, essential to form vigorous galls. Transgenic lines overexpressing particular cell cycle genes can provoke severe nuclei phenotype changes mainly at later stages of feeding site development. This can result in chaotic nuclear phenotypes affecting their volume. These aberrant nuclear organizations are hampering gall development and nematode maturation. Herein we report on two nuclear volume assessment methods which provide information on the complex changes occurring in nuclei during giant cell development. Although we observed that the data obtained with AMIRA tend to be more detailed than Volumest (Image J), both approaches proved to be highly versatile, allowing to access 3D morphological changes in nuclei of complex tissues and organs. The protocol presented here is based on standard confocal optical sectioning and 3-D image analysis and can be applied to study any volume and shape of cellular organelles in various complex biological specimens. Our results suggest that an increase in giant cell nuclear volume is not solely linked to increasing ploidy levels, but might result from the accumulation of mitotic defects.
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Affiliation(s)
- José Dijair Antonino de Souza Junior
- Institut National de la Recherche Agronomique, Université Côte d’Azur, Centre National de la Recherche Scientifique, Institut Sophia AgrobiotechSophia-Antipolis, France
- Laboratório de Interação Molecular Planta-Praga, Embrapa Recursos Genéticos e BiotecnologiaBrasília, Brazil
| | - Olivier Pierre
- Institut National de la Recherche Agronomique, Université Côte d’Azur, Centre National de la Recherche Scientifique, Institut Sophia AgrobiotechSophia-Antipolis, France
| | - Roberta R. Coelho
- Institut National de la Recherche Agronomique, Université Côte d’Azur, Centre National de la Recherche Scientifique, Institut Sophia AgrobiotechSophia-Antipolis, France
- Laboratório de Interação Molecular Planta-Praga, Embrapa Recursos Genéticos e BiotecnologiaBrasília, Brazil
| | - Maria F. Grossi-de-Sa
- Laboratório de Interação Molecular Planta-Praga, Embrapa Recursos Genéticos e BiotecnologiaBrasília, Brazil
| | - Gilbert Engler
- Institut National de la Recherche Agronomique, Université Côte d’Azur, Centre National de la Recherche Scientifique, Institut Sophia AgrobiotechSophia-Antipolis, France
| | - Janice de Almeida Engler
- Institut National de la Recherche Agronomique, Université Côte d’Azur, Centre National de la Recherche Scientifique, Institut Sophia AgrobiotechSophia-Antipolis, France
- *Correspondence: Janice de Almeida Engler,
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Baldacci-Cresp F, Sacré PY, Twyffels L, Mol A, Vermeersch M, Ziemons E, Hubert P, Pérez-Morga D, El Jaziri M, de Almeida Engler J, Baucher M. Poplar-Root Knot Nematode Interaction: A Model for Perennial Woody Species. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2016; 29:560-572. [PMID: 27135257 DOI: 10.1094/mpmi-01-16-0015-r] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Plant root-knot nematode (RKN) interaction studies are performed on several host plant models. Though RKN interact with trees, no perennial woody model has been explored so far. Here, we show that poplar (Populus tremula × P. alba) grown in vitro is susceptible to Meloidogyne incognita, allowing this nematode to penetrate, to induce feeding sites, and to successfully complete its life cycle. Quantitative reverse transcription-polymerase chain reaction analysis was performed to study changes in poplar gene expression in galls compared with noninfected roots. Three genes (expansin A, histone 3.1, and asparagine synthase), selected as gall development marker genes, followed, during poplar-nematode interaction, a similar expression pattern to what was described for other plant hosts. Downregulation of four genes implicated in the monolignol biosynthesis pathway was evidenced in galls, suggesting a shift in the phenolic profile within galls developed on poplar roots. Raman microspectroscopy demonstrated that cell walls of giant cells were not lignified but mainly composed of pectin and cellulose. The data presented here suggest that RKN exercise conserved strategies to reproduce and to invade perennial plant species and that poplar is a suitable model host to study specific traits of tree-nematode interactions.
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Affiliation(s)
- Fabien Baldacci-Cresp
- 1 Laboratoire de Biotechnologie Végétale, Université libre de Bruxelles, Rue des Professeurs Jeener et Brachet 12, B-6041 Gosselies, Belgium
| | - Pierre-Yves Sacré
- 2 University of Liege, CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, B36, B-4000 Liege, Belgium
| | - Laure Twyffels
- 3 Center for Microscopy and Molecular Imaging-CMMI, Université libre de Bruxelles
| | - Adeline Mol
- 1 Laboratoire de Biotechnologie Végétale, Université libre de Bruxelles, Rue des Professeurs Jeener et Brachet 12, B-6041 Gosselies, Belgium
| | - Marjorie Vermeersch
- 3 Center for Microscopy and Molecular Imaging-CMMI, Université libre de Bruxelles
| | - Eric Ziemons
- 2 University of Liege, CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, B36, B-4000 Liege, Belgium
| | - Philippe Hubert
- 2 University of Liege, CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, B36, B-4000 Liege, Belgium
| | - David Pérez-Morga
- 3 Center for Microscopy and Molecular Imaging-CMMI, Université libre de Bruxelles
- 4 Laboratoire de Parasitologie Moléculaire, Université libre de Bruxelles; and
| | - Mondher El Jaziri
- 1 Laboratoire de Biotechnologie Végétale, Université libre de Bruxelles, Rue des Professeurs Jeener et Brachet 12, B-6041 Gosselies, Belgium
| | - Janice de Almeida Engler
- 5 INRA, Université Nice Sophia Antipolis, CNRS, UMR 1355-7254 Institut Sophia Agrobiotech, F-06900 Sophia Antipolis, France
| | - Marie Baucher
- 1 Laboratoire de Biotechnologie Végétale, Université libre de Bruxelles, Rue des Professeurs Jeener et Brachet 12, B-6041 Gosselies, Belgium
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Abstract
Mitosis which is a major step during plant development can also be observed in physiopathological conditions. During the compatible interaction between the root-knot nematode Meloidogyne incognita and its host Arabidopsis, the pathogen induce through repeated divisions without complete cytokinesis the formation of hypertrophied and multinucleate feeding cells, named giant cells. Due to the presence of hypertrophied plant cell material surrounding the giant cells, classical live cell imaging gave therefore very poor resolution. Here, we describe a protocol which allows the in vivo observation of the mitotic apparatus in developing giant cells using confocal imaging of vibrosliced tissues. This approach can also be used to visualize in vivo other cellular processes occurring in different steps of giant cells.
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Affiliation(s)
- Marie-Cécile Caillaud
- Laboratoire de Reproduction et Développement des Plantes, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, Lyon, France
| | - Bruno Favery
- INRA, Institut Sophia Agrobiotech, UMR 1355, 400 route des Chappes, 06903, Sophia-Antipolis, France.
- CNRS, UMR 7254, 400 route des Chappes, 06903, Sophia-Antipolis, France.
- Université de Nice Sophia-Antipolis, UMR 1355, 400 route des Chappes, 06903, Sophia-Antipolis, France.
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35
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Inada N, Higaki T, Hasezawa S. Quantitative analyses on dynamic changes in the organization of host Arabidopsis thaliana actin microfilaments surrounding the infection organ of the powdery mildew fungus Golovinomyces orontii. JOURNAL OF PLANT RESEARCH 2016; 129:103-110. [PMID: 26646379 DOI: 10.1007/s10265-015-0769-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 10/18/2015] [Indexed: 06/05/2023]
Abstract
Obligate biotrophic fungi that cause powdery mildew on host plants form a specialized infection organ called the haustorium in the host apoplast. It was previously reported that the haustorium is surrounded by host actin microfilaments (AFs). The previous study used fixed cells, in which AFs were stained with fluorescently labeled phalloidine, therefore the structural dynamics of haustorium-surrounding AFs has not been examined. In the present study, we performed a live imaging analysis to examine the dynamics and developmental changes in the organization of haustorium-surrounding host AFs using host Arabidopsis thaliana and A. thaliana-adapted powdery mildew fungus Golovinomyces orontii. Image correlation-based velocimetry analysis suggested that AFs around haustorium are rather static compared to the dynamicity of AFs at the cell surface. Quantification of AF density and bundling showed that the density, but not the level of bundling, of haustorium-surrounding AFs increased as the haustorium matures. The possible role of AFs around haustoria is discussed.
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Affiliation(s)
- Noriko Inada
- The Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma-shi, Nara, 630-0192, Japan.
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| | - Takumi Higaki
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8562, Japan
| | - Seiichiro Hasezawa
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8562, Japan
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36
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Favery B, Quentin M, Jaubert-Possamai S, Abad P. Gall-forming root-knot nematodes hijack key plant cellular functions to induce multinucleate and hypertrophied feeding cells. JOURNAL OF INSECT PHYSIOLOGY 2016. [PMID: 26211599 DOI: 10.1016/j.jinsphys.2015.07.013] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Among plant-parasitic nematodes, the root-knot nematodes (RKNs) of the Meloidogyne spp. are the most economically important genus. RKN are root parasitic worms able to infect nearly all crop species and have a wide geographic distribution. During infection, RKNs establish and maintain an intimate relationship with the host plant. This includes the creation of a specialized nutritional structure composed of multinucleate and hypertrophied giant cells, which result from the redifferentiation of vascular root cells. Giant cells constitute the sole source of nutrients for the nematode and are essential for growth and reproduction. Hyperplasia of surrounding root cells leads to the formation of the gall or root-knot, an easily recognized symptom of plant infection by RKNs. Secreted effectors produced in nematode salivary glands and injected into plant cells through a specialized feeding structure called the stylet play a critical role in the formation of giant cells. Here, we describe the complex interactions between RKNs and their host plants. We highlight progress in understanding host plant responses, focusing on how RKNs manipulate key plant processes and functions, including cell cycle, defence, hormones, cellular scaffold, metabolism and transport.
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Affiliation(s)
- Bruno Favery
- INRA, UMR 1355 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France; Univ. Nice Sophia Antipolis, UMR 7254 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France; CNRS, UMR 7254 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France
| | - Michaël Quentin
- INRA, UMR 1355 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France; Univ. Nice Sophia Antipolis, UMR 7254 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France; CNRS, UMR 7254 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France
| | - Stéphanie Jaubert-Possamai
- INRA, UMR 1355 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France; Univ. Nice Sophia Antipolis, UMR 7254 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France; CNRS, UMR 7254 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France
| | - Pierre Abad
- INRA, UMR 1355 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France; Univ. Nice Sophia Antipolis, UMR 7254 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France; CNRS, UMR 7254 Institut Sophia Agrobiotech, 06900 Sophia-Antipolis, France.
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Albuquerque ÉVS, Bezerra CA, Romero JV, Valencia JWA, Valencia-Jiménez A, Pimenta LM, Barbosa AEAD, Silva MCM, Meneguim AM, Sá MEL, Engler G, de Almeida-Engler J, Fernandez D, Grossi-de-Sá MF. Seed-Specific Stable Expression of the α-AI1 Inhibitor in Coffee Grains and the In Vivo Implications for the Development of the Coffee Berry Borer. TROPICAL PLANT BIOLOGY 2015; 8:98-107. [PMID: 26697127 PMCID: PMC4676793 DOI: 10.1007/s12042-015-9153-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 09/21/2015] [Indexed: 05/31/2023]
Abstract
Genetic transformation of coffee (Coffea spp.), the second most traded commodity worldwide, is an alternative approach to introducing features that cannot be introgressed by traditional crossings. The transgenic stability, heritability and quantitative and spatial expression patterns of the seed-specific promoter phytohemagglutinin (PHA-L) from Phaseolus vulgaris were characterized in genetically modified C. arabica expressing the α-amylase inhibitor-1 (α-AI1) gene. The α-AI1 inhibitor shows considerable activity toward digestive enzymes of the coffee berry borer (CBB) Hypothenemus hampei. This insect pest expends its life cycle almost entirely in coffee berries. Transgene containment in the fruit is important to meeting food and environmental safety requirements for releasing genetically modified (GM) crops. PCR analysis of T2 coffee plants showed a Mendelian single-copy segregation pattern. Ectopic transgene expression was only detected in coffee grains, as demonstrated by reverse transcription-PCR analysis of different plant tissues. An intense immunocytochemical signal associated with α-AI1 protein expression was localized to endospermic cells. In addition, a delay in the larval development of CBB was observed after challenging transgenic coffee seeds with the insect. These results indicate that the PHA-L promoter might be a useful tool in coffee for the seed-specific expression of genes related to coffee bean productivity, quality and pest protection. The biotechnological applicability of the α-AI1 gene for controlling CBB is also discussed. This work is the first report showing a seed-specific transgene expression in coffee plants.
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Affiliation(s)
| | - Caroline A. Bezerra
- />Embrapa Recursos Genéticos e Biotecnologia, 70770-917 Brasília, DF Brazil
- />Universidade Católica de Brasília, 70790-160 Brasília, DF Brazil
| | - Juan V. Romero
- />Universidad del Atlántico, km 7, Barranquilla, Colombia
| | | | - Arnubio Valencia-Jiménez
- />Facultad de Ciencias Agropecuarias, Universidad de Caldas, Apartado aéreo 275, Manizales, Colombia
| | - Lucas M. Pimenta
- />Embrapa Recursos Genéticos e Biotecnologia, 70770-917 Brasília, DF Brazil
- />Universidade Católica de Brasília, 70790-160 Brasília, DF Brazil
| | | | - Maria C. M. Silva
- />Embrapa Recursos Genéticos e Biotecnologia, 70770-917 Brasília, DF Brazil
| | - Ana M. Meneguim
- />IAPAR, Instituto Agronômico do Paraná, 86047-902 Londrina, Brazil
| | - Maria Eugênia L. Sá
- />EPAMIG, Empresa de Pesquisa Agropecuária de Minas Gerais, 38001-970 Uberaba, MG Brazil
| | - Gilbert Engler
- />INRA, Institut National de la Recherche Agronomique, Plant, Health and Environment, Plant-Nematodes Interaction Team, UMR 1355 ISA/Centre National de la Recherche Scientifique, Sophia-Antipolis, France
| | - Janice de Almeida-Engler
- />INRA, Institut National de la Recherche Agronomique, Plant, Health and Environment, Plant-Nematodes Interaction Team, UMR 1355 ISA/Centre National de la Recherche Scientifique, Sophia-Antipolis, France
| | - Diana Fernandez
- />IRD, Institut de Recherche pour le Développement UMR 186 - IRD/CIRAD/UM2 Résistance des Plantes aux Bio-agresseurs, 34394 Montpellier Cedex 5, France
| | - Maria F. Grossi-de-Sá
- />Embrapa Recursos Genéticos e Biotecnologia, 70770-917 Brasília, DF Brazil
- />Universidade Católica de Brasília, 70790-160 Brasília, DF Brazil
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38
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Zhang HM, Talbot MJ, McCurdy DW, Patrick JW, Offler CE. Calcium-dependent depletion zones in the cortical microtubule array coincide with sites of, but do not regulate, wall ingrowth papillae deposition in epidermal transfer cells. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:6021-33. [PMID: 26136268 PMCID: PMC4566988 DOI: 10.1093/jxb/erv317] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Trans-differentiation to a transfer-cell morphology is characterized by the localized deposition of wall ingrowth papillae that protrude into the cytosol. Whether the cortical microtubule array directs wall ingrowth papillae formation was investigated using a Vicia faba cotyledon culture system in which their adaxial epidermal cells were spontaneously induced to trans-differentiate to transfer cells. During deposition of wall ingrowth papillae, the aligned cortical microtubule arrays in precursor epidermal cells were reorganized into a randomized array characterized by circular depletion zones. Concurrence of the temporal appearance, spatial pattern, and size of depletion zones and wall ingrowth papillae was consistent with each papilla occupying a depletion zone. Surprisingly, microtubules appeared not to regulate construction of wall ingrowth papillae, as neither depolymerization nor stabilization of cortical microtubules changed their deposition pattern or morphology. Moreover, the size and spatial pattern of depletion zones was unaltered when the formation of wall ingrowth papillae was blocked by inhibiting cellulose biosynthesis. In contrast, the depletion zones were absent when the cytosolic calcium plumes, responsible for directing wall ingrowth papillae formation, were blocked or dissipated. Thus, we conclude that the depletion zones within the cortical microtubule array result from localized depolymerization of microtubules initiated by elevated cytosolic Ca(2+) levels at loci where wall ingrowth papillae are deposited. The physiological significance of the depletion zones as a mechanism to accommodate the construction of wall ingrowth papillae without compromising maintenance of the plasma membrane-microtubule inter-relationship is discussed.
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Affiliation(s)
- Hui-ming Zhang
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Mark J Talbot
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia CSIRO Agriculture, Canberra, ACT 2601, Australia
| | - David W McCurdy
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia
| | - John W Patrick
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Christina E Offler
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia
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Cabrera J, Díaz-Manzano FE, Barcala M, Arganda-Carreras I, de Almeida-Engler J, Engler G, Fenoll C, Escobar C. Phenotyping nematode feeding sites: three-dimensional reconstruction and volumetric measurements of giant cells induced by root-knot nematodes in Arabidopsis. THE NEW PHYTOLOGIST 2015; 206:868-80. [PMID: 25613856 DOI: 10.1111/nph.13249] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 11/19/2014] [Indexed: 05/08/2023]
Abstract
The control of plant parasitic nematodes is an increasing problem. A key process during the infection is the induction of specialized nourishing cells, called giant cells (GCs), in roots. Understanding the function of genes required for GC development is crucial to identify targets for new control strategies. We propose a standardized method for GC phenotyping in different plant genotypes, like those with modified genes essential for GC development. The method combines images obtained by bright-field microscopy from the complete serial sectioning of galls with TrakEM2, specialized three-dimensional (3D) reconstruction software for biological structures. The volumes and shapes from 162 3D models of individual GCs induced by Meloidogyne javanica in Arabidopsis were analyzed for the first time along their life cycle. A high correlation between the combined volume of all GCs within a gall and the total area occupied by all the GCs in the section/s where they show maximum expansion, and a proof of concept from two Arabidopsis transgenic lines (J0121 ≫ DTA and J0121 ≫ GFP) demonstrate the reliability of the method. We phenotyped GCs and developed a reliable simplified method based on a two-dimensional (2D) parameter for comparison of GCs from different Arabidopsis genotypes, which is also applicable to galls from different plant species and in different growing conditions, as thickness/transparency is not a restriction.
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Affiliation(s)
- Javier Cabrera
- Facultad de Ciencias Ambientales y Bioquímica, Universidad de Castilla-La Mancha, Av. Carlos III s/n, E-45071, Toledo, Spain
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Baldacci-Cresp F, Maucourt M, Deborde C, Pierre O, Moing A, Brouquisse R, Favery B, Frendo P. Maturation of nematode-induced galls in Medicago truncatula is related to water status and primary metabolism modifications. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2015; 232:77-85. [PMID: 25617326 DOI: 10.1016/j.plantsci.2014.12.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 12/22/2014] [Accepted: 12/23/2014] [Indexed: 06/04/2023]
Abstract
Root-knot nematodes are obligatory plant parasitic worms that establish and maintain an intimate relationship with their host plants. During a compatible interaction, these nematodes induce the redifferentiation of root cells into multinucleate and hypertrophied giant cells (GCs). These metabolically active feeding cells constitute the exclusive source of nutrients for the nematode. We analyzed the modifications of water status, ionic content and accumulation of metabolites in development and mature galls induced by Meloidogyne incognita and in uninfected roots of Medicago truncatula plants. Water potential and osmotic pressure are significantly modified in mature galls compared to developing galls and control roots. Ionic content is significantly modified in galls compared to roots. Principal component analyses of metabolite content showed that mature gall metabolism is significantly modified compared to developing gall metabolism. The most striking differences were the three-fold increase of trehalose content associated to the five-fold diminution in glucose concentration in mature galls. Gene expression analysis showed that trehalose accumulation was, at least, partially linked to a significantly lower expression of the trehalase gene in mature galls. Our results point to significant modifications of gall physiology during maturation.
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Affiliation(s)
- Fabien Baldacci-Cresp
- Université de Nice Sophia-Antipolis, UMR Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France; INRA UMR 7254 Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France; CNRS UMR1355 Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France.
| | - Mickaël Maucourt
- Université de Bordeaux 2, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA de Bordeaux, F-33140 Villenave d'Ornon, France; Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, Centre INRA de Bordeaux, F-33140 Villenave d'Ornon, France
| | - Catherine Deborde
- Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, Centre INRA de Bordeaux, F-33140 Villenave d'Ornon, France; INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA de Bordeaux, F-33140 Villenave d'Ornon, France
| | - Olivier Pierre
- Université de Nice Sophia-Antipolis, UMR Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France; INRA UMR 7254 Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France; CNRS UMR1355 Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France
| | - Annick Moing
- Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, Centre INRA de Bordeaux, F-33140 Villenave d'Ornon, France; INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA de Bordeaux, F-33140 Villenave d'Ornon, France
| | - Renaud Brouquisse
- Université de Nice Sophia-Antipolis, UMR Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France; INRA UMR 7254 Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France; CNRS UMR1355 Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France
| | - Bruno Favery
- Université de Nice Sophia-Antipolis, UMR Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France; INRA UMR 7254 Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France; CNRS UMR1355 Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France
| | - Pierre Frendo
- Université de Nice Sophia-Antipolis, UMR Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France; INRA UMR 7254 Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France; CNRS UMR1355 Institut Sophia Agrobiotech, 400 route des chappes BP167, F-06903 Sophia Antipolis, France
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Rodiuc N, Vieira P, Banora MY, de Almeida Engler J. On the track of transfer cell formation by specialized plant-parasitic nematodes. FRONTIERS IN PLANT SCIENCE 2014; 5:160. [PMID: 24847336 PMCID: PMC4017147 DOI: 10.3389/fpls.2014.00160] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 04/07/2014] [Indexed: 05/02/2023]
Abstract
Transfer cells are ubiquitous plant cells that play an important role in plant development as well as in responses to biotic and abiotic stresses. They are highly specialized and differentiated cells playing a central role in the acquisition, distribution and exchange of nutrients. Their unique structural traits are characterized by augmented ingrowths of invaginated secondary wall material, unsheathed by an amplified area of plasma membrane enriched in a suite of solute transporters. Similar morphological features can be perceived in vascular root feeding cells induced by sedentary plant-parasitic nematodes, such as root-knot and cyst nematodes, in a wide range of plant hosts. Despite their close phylogenetic relationship, these obligatory biotrophic plant pathogens engage different approaches when reprogramming root cells into giant cells or syncytia, respectively. Both nematode feeding-cells types will serve as the main source of nutrients until the end of the nematode life cycle. In both cases, these nematodes are able to remarkably maneuver and reprogram plant host cells. In this review we will discuss the structure, function and formation of these specialized multinucleate cells that act as nutrient transfer cells accumulating and synthesizing components needed for survival and successful offspring of plant-parasitic nematodes. Plant cells with transfer-like functions are also a renowned subject of interest involving still poorly understood molecular and cellular transport processes.
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Affiliation(s)
- Natalia Rodiuc
- Laboratório de Interação Molecular Planta-Praga, Embrapa Recursos Genéticos e Biotecnologia, PqEBBrasília, Brasil
| | - Paulo Vieira
- NemaLab – Instituto de Ciências Agrárias e Ambientais Mediterrânicas, Universidade de ÉvoraÉvora, Portugal
| | | | - Janice de Almeida Engler
- Laboratório de Interação Molecular Planta-Praga, Embrapa Recursos Genéticos e Biotecnologia, PqEBBrasília, Brasil
- Institut National de la Recherche Agronomique, Plant, Health and Environment, Plant-Nematodes Interaction Team, UMR 1355 ISA/Centre National de la Recherche Scientifique, UMR 7254 ISA/Université de Nice-Sophia Antipolis, UMR ISASophia-Antipolis, France
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42
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Kyndt T, Vieira P, Gheysen G, de Almeida-Engler J. Nematode feeding sites: unique organs in plant roots. PLANTA 2013; 238:807-18. [PMID: 23824525 DOI: 10.1007/s00425-013-1923-z] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 06/13/2013] [Indexed: 05/19/2023]
Abstract
Although generally unnoticed, nearly all crop plants have one or more species of nematodes that feed on their roots, frequently causing tremendous yield losses. The group of sedentary nematodes, which are among the most damaging plant-parasitic nematodes, cause the formation of special organs called nematode feeding sites (NFS) in the root tissue. In this review we discuss key metabolic and cellular changes correlated with NFS development, and similarities and discrepancies between different types of NFS are highlighted.
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Affiliation(s)
- Tina Kyndt
- Department Molecular Biotechnology, Ghent University (UGent), Coupure Links 653, 9000, Ghent, Belgium,
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Ji H, Gheysen G, Denil S, Lindsey K, Topping JF, Nahar K, Haegeman A, De Vos WH, Trooskens G, Van Criekinge W, De Meyer T, Kyndt T. Transcriptional analysis through RNA sequencing of giant cells induced by Meloidogyne graminicola in rice roots. JOURNAL OF EXPERIMENTAL BOTANY 2013; 64:3885-98. [PMID: 23881398 PMCID: PMC3745741 DOI: 10.1093/jxb/ert219] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
One of the reasons for the progressive yield decline observed in aerobic rice production is the rapid build-up of populations of the rice root knot nematode Meloidogyne graminicola. These nematodes induce specialized feeding cells inside root tissue, called giant cells. By injecting effectors in and sipping metabolites out of these cells, they reprogramme normal cell development and deprive the plant of its nutrients. In this research we have studied the transcriptome of giant cells in rice, after isolation of these cells by laser-capture microdissection. The expression profiles revealed a general induction of primary metabolism inside the giant cells. Although the roots were shielded from light induction, we detected a remarkable induction of genes involved in chloroplast biogenesis and tetrapyrrole synthesis. The presence of chloroplast-like structures inside these dark-grown cells was confirmed by confocal microscopy. On the other hand, genes involved in secondary metabolism and more specifically, the majority of defence-related genes were strongly suppressed in the giant cells. In addition, significant induction of transcripts involved in epigenetic processes was detected inside these cells 7 days after infection.
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Affiliation(s)
- Hongli Ji
- Department of Molecular Biotechnology, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Godelieve Gheysen
- Department of Molecular Biotechnology, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
- * To whom correspondence should be addressed. E-mail:
| | - Simon Denil
- Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Keith Lindsey
- School of Biological and Biomedical Sciences, Durham University, South Road, Durham DH1 3LE, UK
| | - Jennifer F. Topping
- School of Biological and Biomedical Sciences, Durham University, South Road, Durham DH1 3LE, UK
| | - Kamrun Nahar
- Department of Molecular Biotechnology, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Annelies Haegeman
- Department of Molecular Biotechnology, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Winnok H. De Vos
- Department of Molecular Biotechnology, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
- Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Geert Trooskens
- Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Wim Van Criekinge
- Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
- NXTGNT, Ghent University, Medical Research Building, Ghent University Hospital, De Pintelaan 185, B-9000 Ghent, Belgium
| | - Tim De Meyer
- Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Tina Kyndt
- Department of Molecular Biotechnology, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
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Mitchum MG, Hussey RS, Baum TJ, Wang X, Elling AA, Wubben M, Davis EL. Nematode effector proteins: an emerging paradigm of parasitism. THE NEW PHYTOLOGIST 2013; 199:879-894. [PMID: 23691972 DOI: 10.1111/nph.12323] [Citation(s) in RCA: 181] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 04/05/2013] [Indexed: 05/18/2023]
Abstract
Phytonematodes use a stylet and secreted effectors to modify host cells and ingest nutrients to support their growth and development. The molecular function of nematode effectors is currently the subject of intense investigation. In this review, we summarize our current understanding of nematode effectors, with a particular focus on proteinaceous stylet-secreted effectors of sedentary endoparasitic phytonematodes, for which a wealth of information has surfaced in the past 10 yr. We provide an update on the effector repertoires of several of the most economically important genera of phytonematodes and discuss current approaches to dissecting their function. Lastly, we highlight the latest breakthroughs in effector discovery that promise to shed new light on effector diversity and function across the phylum Nematoda.
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Affiliation(s)
- Melissa G Mitchum
- Division of Plant Sciences and Bond Life Sciences Center, University of Missouri, Columbia, MO, 65211, USA
| | - Richard S Hussey
- Department of Plant Pathology, University of Georgia, Athens, GA, 30602, USA
| | - Thomas J Baum
- Department of Plant Pathology and Microbiology, Iowa State University, Ames, IA, 50011, USA
| | - Xiaohong Wang
- USDA-ARS, Robert W. Holley Center for Agriculture and Health and Department of Plant Pathology and Plant-Microbe Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Axel A Elling
- Department of Plant Pathology, Washington State University, Pullman, WA, 99164, USA
| | - Martin Wubben
- USDA-ARS, Crop Science Research Laboratory, Genetics and Precision Agriculture Research Unit and Department of Biochemistry and Molecular Biology, Mississippi State University, Mississippi State, MS, 39762, USA
| | - Eric L Davis
- Department of Plant Pathology, North Carolina State University, Raleigh, NC, 27695, USA
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Płachno BJ, Swiątek P, Sas-Nowosielska H, Kozieradzka-Kiszkurno M. Organisation of the endosperm and endosperm-placenta syncytia in bladderworts (Utricularia, Lentibulariaceae) with emphasis on the microtubule arrangement. PROTOPLASMA 2013; 250:863-73. [PMID: 23178998 PMCID: PMC3728435 DOI: 10.1007/s00709-012-0468-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 11/02/2012] [Indexed: 05/10/2023]
Abstract
Multinucleate cells play an important role in higher plants, especially during reproduction; however, the configurations of their cytoskeletons, which are formed as a result of mitosis without cytokinesis, have mainly been studied in coenocytes. Previous authors have proposed that in spite of their developmental origin (cell fusion or mitosis without cytokinesis), in multinucleate plant cells, radiating microtubules determine the regular spacing of individual nuclei. However, with the exception of specific syncytia induced by parasitic nematodes, there is no information about the microtubular cytoskeleton in plant heterokaryotic syncytia, i.e. when the nuclei of fused cells come from different cell pools. In this paper, we describe the arrangement of microtubules in the endosperm and special endosperm-placenta syncytia in two Utricularia species. These syncytia arise from different progenitor cells, i.e. cells of the maternal sporophytic nutritive tissue and the micropylar endosperm haustorium (both maternal and paternal genetic material). The development of the endosperm in the two species studied was very similar. We describe microtubule configurations in the three functional endosperm domains: the micropylar syncytium, the endosperm proper and the chalazal haustorium. In contrast to plant syncytia that are induced by parasitic nematodes, the syncytia of Utricularia had an extensive microtubular network. Within each syncytium, two giant nuclei, coming from endosperm cells, were surrounded by a three-dimensional cage of microtubules, which formed a huge cytoplasmic domain. At the periphery of the syncytium, where new protoplasts of the nutritive cells join the syncytium, the microtubules formed a network which surrounded small nuclei from nutritive tissue cells and were also distributed through the cytoplasm. Thus, in the Utricularia syncytium, there were different sized cytoplasmic domains, whose architecture depended on the source and size of the nuclei. The endosperm proper was isolated from maternal (ovule) tissues by a cuticle layer, so the syncytium and chalazal haustorium were the only way for nutrients to be transported from the maternal tissue towards the developing embryo.
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Affiliation(s)
- Bartosz J Płachno
- Department of Plant Cytology and Embryology, Jagiellonian University, 52 Grodzka St., 31-044 Cracow, Poland.
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Hardham AR. Microtubules and biotic interactions. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2013; 75:278-89. [PMID: 23480445 DOI: 10.1111/tpj.12171] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 02/20/2013] [Accepted: 03/04/2013] [Indexed: 05/06/2023]
Abstract
Plant microtubules undergo extensive reorganization in response to symbiotic and pathogenic organisms. During the development of successful symbioses with rhizobia and mycorrhizal fungi, novel microtubule arrays facilitate the progression of infection threads and hyphae, respectively, from the plant surface through epidermal and cortical cells. During viral and nematode infections, plant microtubules appear to be commandeered by the pathogen. Viruses use plant microtubules for intra and intercellular movement, as well as for interhost transmission. Nematodes manipulate spindle and phragmoplast microtubules to enhance mitosis and partial cytokinesis during the development of syncytia and giant cells. Pathogenic bacteria, fungi and oomycetes induce a range of alterations to microtubule arrays and dynamics. In many situations, the pathogen, or the elicitor or effector proteins derived from them, induce depolymerization of plant cortical microtubule arrays. In some cases, microtubule disruption is associated with the plant defence response and resistance. In other cases, microtubule depolymerization increases plant susceptibility to the invading pathogen. The reasons for this apparent inconsistency may depend on a number of factors, in particular on the identity of the organism orchestrating the microtubule changes. Overall, the weight of evidence indicates that microtubules play an important role in both the establishment of functional symbioses and in defence against invading pathogens. Research is beginning to unravel details about the nature of both the chemical and the mechanical signals to which the plant microtubule arrays respond during biotic interactions.
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Affiliation(s)
- Adrienne R Hardham
- Plant Science Division, Research School of Biology, College of Medicine, Biology and Environment, The Australian National University, Canberra, ACT 2600, Australia.
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Miranda VDJ, Coelho RR, Viana AAB, de Oliveira Neto OB, Carneiro RMDG, Rocha TL, Grossi de Sa MF, Fragoso RR. Validation of reference genes aiming accurate normalization of qPCR data in soybean upon nematode parasitism and insect attack. BMC Res Notes 2013; 6:196. [PMID: 23668315 PMCID: PMC3660166 DOI: 10.1186/1756-0500-6-196] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Accepted: 05/04/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Soybean pathogens and pests reduce grain production worldwide. Biotic interaction cause extensive changes in plant gene expression profile and the data produced by functional genomics studies need validation, usually done by quantitative PCR. Nevertheless, this technique relies on accurate normalization which, in turn, depends upon the proper selection of stable reference genes for each experimental condition. To date, only a few studies were performed to validate reference genes in soybean subjected to biotic stress. Here, we report reference genes validation in soybean during root-knot nematode (Meloidogyne incognita) parasitism and velvetbean caterpillar (Anticarsia gemmatalis) attack. FINDINGS The expression stability of nine classical reference genes (GmCYP2, GmELF1A, GmELF1B, GmACT11, GmTUB, GmTUA5, GmG6PD, GmUBC2 and GmUBC4) was evaluated using twenty-four experimental samples including different organs, developmental stages, roots infected with M. incognita and leaves attacked by A. gemmatalis. Two different algorithms (geNorm and NormFinder) were used to determine expression stability. GmCYP2 and GmUBC4 are the most stable in different organs. Considering the developmental stages, GmELF1A and GmELF1B genes are the most stable. For spatial and temporal gene expression studies, normalization may be performed using GmUBC4, GmUBC2, GmCYP2 and GmACT11 as reference genes. Our data indicate that both GmELF1A and GmTUA5 are the most stable reference genes for data normalization obtained from soybean roots infected with M. incognita, and GmCYP2 and GmELF1A are the most stable in soybean leaves infested with A. gemmatalis. CONCLUSIONS Future expression studies using nematode infection and caterpilar infestation in soybean plant may utilize the reference gene sets reported here.
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Affiliation(s)
- Vívian de Jesus Miranda
- Department of Cell Biology Graduate Program in Molecular Biology, University of Brasília, Brasília, DF, Brazil
| | - Roberta Ramos Coelho
- Department of Cell Biology Graduate Program in Molecular Biology, University of Brasília, Brasília, DF, Brazil
- Embrapa Genetic Resources and Biotechnology, Laboratory of Molecular Plant-Pest Interaction, PqEB Final Av. W/5 Norte, Brasília, DF, Brazil
| | - Antônio Américo Barbosa Viana
- Embrapa Genetic Resources and Biotechnology, Laboratory of Molecular Plant-Pest Interaction, PqEB Final Av. W/5 Norte, Brasília, DF, Brazil
- Catholic University of Brasília, Graduate Program in Genomic Sciences and Biotechnology, Brasília, DF, Brazil
| | - Osmundo Brilhante de Oliveira Neto
- Embrapa Genetic Resources and Biotechnology, Laboratory of Molecular Plant-Pest Interaction, PqEB Final Av. W/5 Norte, Brasília, DF, Brazil
- Faculdades Integradas do Planalto Central – Faciplac, Brasília, DF, Brazil
| | | | - Thales Lima Rocha
- Embrapa Genetic Resources and Biotechnology, Laboratory of Molecular Plant-Pest Interaction, PqEB Final Av. W/5 Norte, Brasília, DF, Brazil
| | - Maria Fatima Grossi de Sa
- Department of Cell Biology Graduate Program in Molecular Biology, University of Brasília, Brasília, DF, Brazil
- Embrapa Genetic Resources and Biotechnology, Laboratory of Molecular Plant-Pest Interaction, PqEB Final Av. W/5 Norte, Brasília, DF, Brazil
- Catholic University of Brasília, Graduate Program in Genomic Sciences and Biotechnology, Brasília, DF, Brazil
| | - Rodrigo Rocha Fragoso
- Department of Cell Biology Graduate Program in Molecular Biology, University of Brasília, Brasília, DF, Brazil
- Embrapa Cerrados, Laboratory of Phytopathology, Planaltina, DF, Brazil
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van Gisbergen PAC, Bezanilla M. Plant formins: membrane anchors for actin polymerization. Trends Cell Biol 2013; 23:227-33. [PMID: 23317636 DOI: 10.1016/j.tcb.2012.12.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 12/06/2012] [Accepted: 12/10/2012] [Indexed: 11/18/2022]
Abstract
In plants, the actin cytoskeleton plays a fundamental role in intracellular transport, cell growth, and morphology. Formins are central regulators of actin polymerization and actin-based processes in many eukaryotes. Plants have a diverse family of formins and this diversity arose early in land plant evolution, probably deriving from family expansion and domain acquisition. Recently, formins from different plant lineages have been studied and the focus of these studies is beginning to shift from biochemical characterization to in vivo function. In vivo studies have shown that distinct biochemical activities confer specific cellular functions. Despite these differences, many plant formins have in common a direct link to the plasma membrane, suggesting that formins in plants are important links between the plasma membrane and actin remodeling.
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Fudali SL, Wang C, Williamson VM. Ethylene signaling pathway modulates attractiveness of host roots to the root-knot nematode Meloidogyne hapla. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2013; 26:75-86. [PMID: 22712507 DOI: 10.1094/mpmi-05-12-0107-r] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Infective juveniles of the root-knot nematode Meloidogyne hapla are attracted to the zone of elongation of roots where they invade the host but little is known about what directs the nematode to this region of the root. We found that Arabidopsis roots exposed to an ethylene (ET)-synthesis inhibitor attracted significantly more nematodes than control roots and that ET-overproducing mutants were less attractive. Arabidopsis seedlings with ET-insensitive mutations were generally more attractive whereas mutations resulting in constitutive signaling were less attractive. Roots of the ET-insensitive tomato mutant Never ripe (Nr) were also more attractive, indicating that ET signaling also modulated attraction of root-knot nematodes to this host. ET-insensitive mutants have longer roots due to reduced basipetal auxin transport. However, assessments of Arabidopsis mutants that differ in various aspects of the ET response suggest that components of the ET-signaling pathway directly affecting root length are not responsible for modulating root attractiveness and that other components of downstream signaling result in changes in levels of attractants or repellents for M. hapla. These signals may aid in directing this pathogen to an appropriate host and invasion site for completing its life cycle.
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Affiliation(s)
- Sylwia L Fudali
- Department of Nematology, University of California, Davis, USA
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de Almeida Engler J, Gheysen G. Nematode-induced endoreduplication in plant host cells: why and how? MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2013; 26:17-24. [PMID: 23194340 DOI: 10.1094/mpmi-05-12-0128-cr] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Plant-parasitic root-knot and cyst nematodes have acquired the ability to induce remarkable changes in host cells during the formation of feeding sites. Root-knot nematodes induce several multinucleate giant cells inside a gall whereas cyst nematodes provoke the formation of a multinucleate syncytium. Both strategies impinge on the deregulation of the cell cycle, involving a major role for endoreduplication. This review will first describe the current knowledge on the control of normal and aberrant cell cycles. Thereafter, we will focus on the role of both cell-cycle routes in the transformation process of root cells into large and highly differentiated feeding sites as induced by the phytoparasitic root-knot and cyst nematodes.
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