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Dutta TK, Akhil VS, Kundu A, Dash M, Phani V, Sirohi A, Somvanshi VS. Induced knockdown of Mg-odr-1 and Mg-odr-3 perturbed the host seeking behavior of Meloidogyne graminicola in rice. Heliyon 2024; 10:e26384. [PMID: 38420492 PMCID: PMC10900406 DOI: 10.1016/j.heliyon.2024.e26384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 01/18/2024] [Accepted: 02/12/2024] [Indexed: 03/02/2024] Open
Abstract
Root-knot nematode Meloidogyne graminicola is one of the most destructive plant parasites in upland as well as direct seeded rice. As an integral part of nematode biology, host finding behavior involves perceiving and responding to different chemical cues originating from the rhizosphere. A sustainable management tactic may include retardation of nematode chemoreception that would impair them to detect and discriminate the host stimuli. Deciphering the molecular basis of nematode chemoreception is vital to identify chokepoints for chemical or genetic interventions. However, compared to the well-characterized chemoreception mechanism in model nematode Caenorhabditis elegans, plant nematode chemoreception is yet underexplored. Herein, the full-length cDNA sequences of two chemotaxis-related genes (Mg-odr-1 and Mg-odr-3) were cloned from M. graminicola. Both the genes were markedly upregulated in the early developmental stages of M. graminicola suggesting their involvement in host finding processes. RNAi-induced independent knockdown of Mg-odr-1 and Mg-odr-3 caused behavioral aberration in second-stage juveniles of M. graminicola which in turn perturbed the nematodes' host finding ability and parasitic success inside rice roots. Additionally, nematodes' chemotactic response to different host root exudates, volatile and nonvolatile compounds was affected. Our results demonstrating the role of specific chemosensory genes in modulating M. graminicola host seeking behavior can enrich the existing knowledge of plant nematode chemoreception mechanism, and these genes can be targeted for novel nematicide development or in planta RNAi screens.
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Affiliation(s)
- Tushar K. Dutta
- Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Voodikala S. Akhil
- Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Artha Kundu
- Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Manoranjan Dash
- Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Victor Phani
- Department of Agricultural Entomology, Uttar Banga Krishi Viswavidyalaya (Majhian Campus), Balurghat, 733133, India
| | - Anil Sirohi
- Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Vishal S. Somvanshi
- Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
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Carneiro RMDG, Souza CFB, Mattos VS, Correia VR. Molecular Techniques for Root-Knot Nematode Identification. Methods Mol Biol 2024; 2756:227-245. [PMID: 38427296 DOI: 10.1007/978-1-0716-3638-1_5] [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: 03/02/2024]
Abstract
Among plant-parasitic nematodes, root-knot nematodes (RKN), Meloidogyne spp., are the most important parasite infecting economically important crops globally and causing severe losses in crop production. The use of efficient nematode control methods against these parasites depends upon their correct detection in roots and soil samples. Currently, the use of integrated identification methods, including biochemical, molecular, and morphological-based characters, is preferred. But the techniques using morphology and phylogenetic analysis are time-consuming and not suitable for routine analysis. They have only been used for studies of cryptic species, which were identified using integrative taxonomy. Here we describe the enzymatic and molecular-based methods that have successfully been used in Brazil for more than 25 years in the Nematology Lab at Embrapa Genetic Resources and Biotechnology for routine analysis. This technique is a combination of isozyme esterase profiling and molecular markers, with the aim of having a rapid and correct diagnosis of Meloidogyne spp. populations from field and greenhouse.
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Affiliation(s)
- Regina M D G Carneiro
- Embrapa Recursos Genéticos e Biotecnologia, PqEB Parque de Estação Biológica, Brasília, DF, Brazil.
| | - Caio F B Souza
- Embrapa Recursos Genéticos e Biotecnologia, PqEB Parque de Estação Biológica, Brasília, DF, Brazil
| | - Vanessa S Mattos
- Embrapa Recursos Genéticos e Biotecnologia, PqEB Parque de Estação Biológica, Brasília, DF, Brazil
- Scientia Terrae Research Institute, Sint-Katelijne-Waver, Belgium
| | - Valdir R Correia
- Instituto Federal de Educação, Ciência e Tecnologia do Tocantins, Dianópolis, TO, Brazil
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Ambreetha S, Balachandar D. SCAR marker: A potential tool for authentication of agriculturally important microorganisms. J Basic Microbiol 2023; 63:4-16. [PMID: 35916264 DOI: 10.1002/jobm.202200419] [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: 07/02/2022] [Accepted: 07/23/2022] [Indexed: 01/04/2023]
Abstract
Microbial inoculants are globally recommended for plant growth promotion and control of plant pathogens. These inoculants require stringent quality checks for sustainable field efficacy. Questionable regulatory frameworks constantly deteriorate the reliability of bio-inoculant technology. Existing global regulations do not involve any rapid molecular technique for the routine inspection of microbial preparations. Sequence characterized amplified region (SCAR) marker offers rapid and precise strain-level authentication of target microbes. Such advanced molecular techniques must be exploited to accurately validate the microbial formulations. Besides, the global dissemination of plant pathogenic microbes has always been an alarming threat to food security. SCAR markers could be used at the plant quarantine centers to rapidly detect catastrophic pathogens, thereby circumventing the import and export of contagious plant materials. The current review is focused on promoting the SCAR marker technology to validate commercial bio-inoculants and predict plant pandemics.
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Affiliation(s)
- Sakthivel Ambreetha
- Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
| | - Dananjeyan Balachandar
- Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
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Soares MR, Carneiro RM, Dias-Arieira CR. Response of different crops and weeds to three biotypes of Meloidogyne graminicola: crop rotation and succession strategies for irrigated rice fields. NEMATOLOGY 2022. [DOI: 10.1163/15685411-bja10155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Summary
Rice, one of the most consumed cereal crops worldwide, is commonly grown under flooded conditions, which directly influences the nematode community. Meloidogyne graminicola is the predominant species in rice fields, causing significant damage and requiring integrated management practices. This study aimed to investigate the response of different Poaceae crops, soybean, and common weeds of rice to three biotypes of M. graminicola (G1, G2 and G3) recently detected in Brazil. The highest reproduction factor (RF) for the three nematode populations was detected in the weeds Echinochloa colonum and E. crus-galli, followed by rice and Italian ryegrass. Wheat ‘TBio Sonic’ and millet ‘ADR 500’ served as poor hosts to the nematodes, whereas black oat, white oat, signalgrass, millet ‘ADR 905’, maize, wheat ‘TBio Toruk’, and soybean acted as non-hosts (RF < 1) in both experiments. Of the three M. graminicola biotypes, G1 was the most aggressive, followed by G3 and G2 (lowest RF values). The findings of the current study can support the selection of crop rotation or succession approaches for the management of different biotypes of M. graminicola in irrigated rice fields.
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Affiliation(s)
- Mayra R.C. Soares
- Department of Agronomy, Universidade Estadual de Maringá (UEM), bloco J35, Avenida Columbus, 5790, Jardim Universitário, Maringá, Paraná, 87020-900, Brazil
| | | | - Claudia R. Dias-Arieira
- Department of Agronomy/Nematology, Universidade Estadual de Maringá, Umuarama, campus (CAU), Estrada Paca, São Cristóvão, Umuarama, Paraná, 87507-190, Brazil
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Meloidogyne graminicola-A Threat to Rice Production: Review Update on Distribution, Biology, Identification, and Management. BIOLOGY 2021; 10:biology10111163. [PMID: 34827156 PMCID: PMC8614973 DOI: 10.3390/biology10111163] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/04/2021] [Accepted: 11/05/2021] [Indexed: 12/05/2022]
Abstract
Simple Summary New risks to plant health are constantly emerging. Such is the case of the rice root knot nematode Meloidogyne graminicola, adapted to flooded conditions and representing a risk to all types of rice agro-systems. It has been recently detected in Italy and added to the European and Mediterranean Plant Protection Organization (EPPO) Alert List. The presence of this nematode in Europe poses a threat to rice production, as there is a high probability to spread, due to trade activities and climate changes. In view of its importance, an extensive updated review was carried out. Abstract Rice (Oryza sativa L.) is one of the main cultivated crops worldwide and represents a staple food for more than half of the world population. Root-knot nematodes (RKNs), Meloidogyne spp., and particularly M. graminicola, are serious pests of rice, being, probably, the most economically important plant-parasitic nematode in this crop. M. graminicola is an obligate sedentary endoparasite adapted to flooded conditions. Until recently, M. graminicola was present mainly in irrigated rice fields in Asia, parts of the Americas, and South Africa. However, in July 2016, it was found in northern Italy in the Piedmont region and in May 2018 in the Lombardy region in the province of Pavia. Following the first detection in the EPPO region, this pest was included in the EPPO Alert List as its wide host range and ability to survive during long periods in environments with low oxygen content, represent a threat for rice production in the European Union. Considering the impact of this nematode on agriculture, a literature review focusing on M. graminicola distribution, biology, identification, and management was conducted.
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Grossi-de-Sa M, Petitot AS, Xavier DA, Sá MEL, Mezzalira I, Beneventi MA, Martins NF, Baimey HK, Albuquerque EVS, Grossi-de-Sa MF, Fernandez D. Rice susceptibility to root-knot nematodes is enhanced by the Meloidogyne incognita MSP18 effector gene. PLANTA 2019; 250:1215-1227. [PMID: 31218413 DOI: 10.1007/s00425-019-03205-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 05/31/2019] [Indexed: 05/27/2023]
Abstract
MAIN CONCLUSION This study revealed novel insights into the function of MSP18 effector during root-knot nematode parasitism in rice roots. MSP18 may modulate host immunity and enhance plant susceptibility to Meloidogyne spp. Rice (Oryza sativa) production is seriously impacted by root-knot nematodes (RKN), including Meloidogyne graminicola, Meloidogyne incognita, and Meloidogyne javanica, in upland and irrigated culture systems. Successful plant infection by RKN is likely achieved by releasing into the host cells some effector proteins to suppress the activation of immune responses. Here, we conducted a series of functional analyses to assess the role of the Meloidogyne-secreted protein (MSP) 18 from M. incognita (Mi-MSP18) during rice infection by RKN. Developmental expression profiles of M. javanica and M. graminicola showed that the MSP18 gene is up-regulated throughout nematode parasitic stages in rice. Reproduction of M. javanica and M. graminicola is enhanced in rice plants overexpressing Mi-MSP18, indicating that the Mi-MSP18 protein facilitates RKN parasitism. Transient expression assays in onion cells suggested that Mi-MSP18 is localized to the cytoplasm of the host cells. In tobacco, Mi-MSP18 suppressed the cell death induced by the INF1 elicitin, suggesting that Mi-MSP18 can interfere with the plant defense pathways. The data obtained in this study highlight Mi-MSP18 as a novel RKN effector able to enhance plant susceptibility and modulate host immunity.
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Affiliation(s)
- Maíra Grossi-de-Sa
- IRD, Cirad, Univ Montpellier, IPME, 911, Avenue Agropolis, 34394, Montpellier Cedex 5, France.
| | - Anne-Sophie Petitot
- IRD, Cirad, Univ Montpellier, IPME, 911, Avenue Agropolis, 34394, Montpellier Cedex 5, France
| | - Deisy A Xavier
- IRD, Cirad, Univ Montpellier, IPME, 911, Avenue Agropolis, 34394, Montpellier Cedex 5, France
- Embrapa Genetic Resources and Biotechnology-PqEB, Final W5 N, Brasília, DF, 70770-917, Brazil
| | - Maria Eugênia L Sá
- IRD, Cirad, Univ Montpellier, IPME, 911, Avenue Agropolis, 34394, Montpellier Cedex 5, France
- Embrapa Genetic Resources and Biotechnology-PqEB, Final W5 N, Brasília, DF, 70770-917, Brazil
- Agricultural Research Company of Minas Gerais State, EPAMIG, Uberaba, MG, Brazil
| | - Itamara Mezzalira
- IRD, Cirad, Univ Montpellier, IPME, 911, Avenue Agropolis, 34394, Montpellier Cedex 5, France
- Embrapa Genetic Resources and Biotechnology-PqEB, Final W5 N, Brasília, DF, 70770-917, Brazil
| | - Magda A Beneventi
- IRD, Cirad, Univ Montpellier, IPME, 911, Avenue Agropolis, 34394, Montpellier Cedex 5, France
- Embrapa Genetic Resources and Biotechnology-PqEB, Final W5 N, Brasília, DF, 70770-917, Brazil
| | - Natalia F Martins
- Embrapa Genetic Resources and Biotechnology-PqEB, Final W5 N, Brasília, DF, 70770-917, Brazil
| | - Hugues K Baimey
- Université de Parakou/Ecole Nationale Supérieure des Sciences et Techniques Agronomiques de Djougou, Parakou, Benin
| | - Erika V S Albuquerque
- Embrapa Genetic Resources and Biotechnology-PqEB, Final W5 N, Brasília, DF, 70770-917, Brazil
| | - Maria F Grossi-de-Sa
- Embrapa Genetic Resources and Biotechnology-PqEB, Final W5 N, Brasília, DF, 70770-917, Brazil
| | - Diana Fernandez
- IRD, Cirad, Univ Montpellier, IPME, 911, Avenue Agropolis, 34394, Montpellier Cedex 5, France.
- Embrapa Genetic Resources and Biotechnology-PqEB, Final W5 N, Brasília, DF, 70770-917, Brazil.
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