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Begum K, Hasan N, Shammi M. Selective Biotic Stressors' Action on Seed Germination: A Review. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024:112156. [PMID: 38866107 DOI: 10.1016/j.plantsci.2024.112156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 06/05/2024] [Accepted: 06/08/2024] [Indexed: 06/14/2024]
Abstract
In the realm of plant biology and agriculture, seed germination serves as a fundamental process with far-reaching implications for crop production and environmental health. This comprehensive review seeks to unravel the intricate web of interactions between some biotic stressors and seed germination, addressing the pertinent issue of how these stressors influence seed germination. Different chemicals produced by interacting plants (different parts), fungi, bacteria, or insects can either promote or inhibit seed germination. Releasing chemicals that modulate signaling pathways and cellular processes significantly disrupt essential cellular functions. This disruption leads to diverse germination outcomes, introducing additional layers of complexity to this regulatory landscape. The chemicals perturb enzyme activity and membrane integrity, imposing unique challenges on the germination process. Understanding the mechanisms- how allelochemicals, mycotoxins, or bacterial toxins affect seed germination or the modes of action holds promise for more sustainable agricultural practices, enhanced pest control, and improved environmental outcomes. In sum, this review contributes to a fundamental exposition of the pivotal role of biotic stressors in shaping the germination of seeds.
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Affiliation(s)
- Kohinoor Begum
- Tropical Crop Improvement Laboratory, Saga University, Saga 840-8503, Japan; United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan.
| | - Nazmul Hasan
- Tropical Crop Improvement Laboratory, Saga University, Saga 840-8503, Japan; United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0065, Japan; Fruit Science Laboratory, Saga University, Saga 840-8502, Japan.
| | - Mashura Shammi
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh.
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A secondary function of trehalose-6-phosphate synthase is required for resistance to oxidative and desiccation stress in Fusarium verticillioides. Fungal Biol 2023; 127:918-926. [PMID: 36906382 DOI: 10.1016/j.funbio.2023.01.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 12/12/2022] [Accepted: 01/20/2023] [Indexed: 01/22/2023]
Abstract
The disaccharide trehalose has long been recognized for its role as a stress solute, but in recent years some of the protective effects previously ascribed to trehalose have been suggested to arise from a function of the trehalose biosynthesis enzyme trehalose-6-phosphate (T6P) synthase that is distinct from its catalytic activity. In this study, we use the maize pathogenic fungus Fusarium verticillioides as a model to explore the relative contributions of trehalose itself and a putative secondary function of T6P synthase in protection against stress as well as to understand why, as shown in a previous study, deletion of the TPS1 gene coding for T6P synthase reduces pathogenicity against maize. We report that a TPS1-deletion mutant of F. verticillioides is compromised in its ability to withstand exposure to oxidative stress meant to simulate the oxidative burst phase of maize defense and experiences more ROS-induced lipid damage than the wild-type strain. Eliminating T6P synthase expression also reduces resistance to desiccation, but not resistance to phenolic acids. Expression of catalytically-inactive T6P synthase in the TPS1-deletion mutant leads to a partial rescue of the oxidative and desiccation stress-sensitive phenotypes, suggesting the importance of a T6P synthase function that is independent of its role in trehalose synthesis.
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Zeng HY, Li CY, Yao N. Fumonisin B1: A Tool for Exploring the Multiple Functions of Sphingolipids in Plants. FRONTIERS IN PLANT SCIENCE 2020; 11:600458. [PMID: 33193556 PMCID: PMC7652989 DOI: 10.3389/fpls.2020.600458] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 10/05/2020] [Indexed: 05/25/2023]
Abstract
Fumonisin toxins are produced by Fusarium fungal pathogens. Fumonisins are structural analogs of sphingosine and potent inhibitors of ceramide synthases (CerSs); they disrupt sphingolipid metabolism and cause disease in plants and animals. Over the past three decades, researchers have used fumonisin B1 (FB1), the most common fumonisin, as a probe to investigate sphingolipid metabolism in yeast and animals. Although the physiological effects of FB1 in plants have yet to be investigated in detail, forward and reverse genetic approaches have revealed many genes involved in these processes. In this review, we discuss the intricate network of signaling pathways affected by FB1, including changes in sphingolipid metabolism and the effects of these changes, with a focus on our current understanding of the multiple effects of FB1 on plant cell death and plant growth. We analyze the major findings that highlight the connections between sphingolipid metabolism and FB1-induced signaling, and we point out where additional research is needed to fill the gaps in our understanding of FB1-induced signaling pathways in plants.
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Affiliation(s)
- Hong-Yun Zeng
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resource, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Chun-Yu Li
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Nan Yao
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resource, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
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4
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Jacquat AG, Theumer MG, Cañizares MC, Debat HJ, Iglesias J, García Pedrajas MD, Dambolena JS. A Survey of Mycoviral Infection in Fusarium spp. Isolated from Maize and Sorghum in Argentina Identifies the First Mycovirus from Fusarium verticillioides. Viruses 2020; 12:v12101161. [PMID: 33066620 PMCID: PMC7602464 DOI: 10.3390/v12101161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/28/2020] [Accepted: 10/09/2020] [Indexed: 12/30/2022] Open
Abstract
Mycoviruses appear to be widespread in Fusarium species worldwide. The aim of this work was to identify mycoviral infections in Fusarium spp., isolated from maize and sorghum grown in Argentina, and to estimate their potential effects on the pathogenicity and toxigenesis of the host fungus towards maize. Mycoviruses were identified in 2 out of 105 isolates analyzed; Fusarium verticillioides strain Sec505 and Fusarium andiyazi strain 162. They were characterized as members of the genus Mitovirus by high-throughput sequencing and sequence analysis. The F. verticillioides mitovirus was a novel mycovirus whereas the F. andiyazi mitovirus was found to be a new strain of a previously identified mitovirus. We have named these mitoviruses, Fusarium verticillioides mitovirus 1 (FvMV1) and Fusarium andiyazi mitovirus 1 strain 162 (FaMV1-162). To our knowledge, FvMV1 is the first mycovirus reported as naturally infecting F. verticillioides, the major causal agent of ear rot and fumonisin producer in corn. Both mitoviruses exhibited 100% vertical transmission rate to microconidia. The Fa162 strain infected with FaMV1-162 did not show phenotypic alterations. In contract, F. verticillioides Sec505 infected with FvMV1 showed increased virulence as well as microconidia and fumonisin-B1 production, compared with two uninfected strains. These results suggest that FvMV1 could have a role in modulating F. verticillioides pathogenicity and toxin production worth further exploring.
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Affiliation(s)
- Andrés Gustavo Jacquat
- Facultad de Ciencias Exactas Físicas y Naturales (FCEFyN), Universidad Nacional de Córdoba (UNC), Córdoba 5000, Argentina;
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
| | - Martín Gustavo Theumer
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas (FCQ), Universidad Nacional de Córdoba (UNC), Córdoba 5000, Argentina;
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Haya de la Torre y Medina Allende—Ciudad Universitaria, Córdoba X5000HUA, Argentina
| | - María Carmen Cañizares
- Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora”, Universidad de Málaga, Consejo Superior de Investigaciones Científicas (IHSM—UMA—CSIC), Estación Experimental “La Mayora”, Avenida Dr. Wienberg s/n, 29750 Algarrobo-Costa, Málaga, Spain;
| | - Humberto Julio Debat
- Instituto de Patología Vegetal, Centro de Investigaciones Agropecuarias, Instituto Nacional de Tecnología Agropecuaria (IPAVE—CIAP—INTA), Camino 60 Cuadras Km 5.5, Córdoba X5020ICA, Argentina;
| | - Juliana Iglesias
- Estación Experimental Pergamino, (EEA) INTA Pergamino, Universidad Nacional Noroeste (UNNOBA), Pergamino (Buenos Aires) B2700, Argentina;
| | - María Dolores García Pedrajas
- Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora”, Universidad de Málaga, Consejo Superior de Investigaciones Científicas (IHSM—UMA—CSIC), Estación Experimental “La Mayora”, Avenida Dr. Wienberg s/n, 29750 Algarrobo-Costa, Málaga, Spain;
- Correspondence: (M.D.G.P.); (J.S.D.)
| | - José Sebastián Dambolena
- Facultad de Ciencias Exactas Físicas y Naturales (FCEFyN), Universidad Nacional de Córdoba (UNC), Córdoba 5000, Argentina;
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
- Correspondence: (M.D.G.P.); (J.S.D.)
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Usseglio VL, Dambolena JS, Martinez MJ, Zunino MP. The Role of Fumonisins in the Biological Interaction between Fusarium verticillioides and Sitophilus zeamais. J Chem Ecol 2020; 46:1059-1068. [PMID: 32946025 DOI: 10.1007/s10886-020-01220-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/24/2020] [Accepted: 09/15/2020] [Indexed: 01/10/2023]
Abstract
The aim of the current study was to investigate the entomopathogenic capacity of the mold Fusarium verticillioides and the effect of its mycotoxins fumonisins, on the grain beetle Sitophilus zeamais. We evaluated the capacity of this fungus to infect live insects, the antifungal activity of constituents of the insect's epicuticle, and the effect of a fumonisin extract on the fitness of the insects. We found that F. verticillioides could not penetrate the cuticle of S. zeamais and that the fumonisin extract had no negative effects on the fitness of the insects. However, the progeny of the insects increased, and the fumonisin extract had repellent effects. This is the first report about the effects of fumonisins on the relationship between F. verticillioides and S. zeamais, which may provide useful information about interactions between pathogenic microorganisms and insects, especially on stored product pests.
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Affiliation(s)
- V L Usseglio
- Instituto Multidisciplinario de Biología Vegetal (IMBiV-CONICET-UNC), Av. Vélez Sarsfield 1611, Ciudad Universitaria, Córdoba, Argentina.,Instituto de Ciencia y Tecnología de los Alimentos (ICTA-FCEFyN-UNC), Av. Vélez Sarsfield 1611, Ciudad Universitaria, Córdoba, Argentina
| | - J S Dambolena
- Instituto Multidisciplinario de Biología Vegetal (IMBiV-CONICET-UNC), Av. Vélez Sarsfield 1611, Ciudad Universitaria, Córdoba, Argentina. .,Instituto de Ciencia y Tecnología de los Alimentos (ICTA-FCEFyN-UNC), Av. Vélez Sarsfield 1611, Ciudad Universitaria, Córdoba, Argentina.
| | - M J Martinez
- Área Mejoramiento Genético Vegetal (EEA INTA Manfredi), Ruta N° 9 km 636, Manfredi, Córdoba, Argentina
| | - M P Zunino
- Instituto Multidisciplinario de Biología Vegetal (IMBiV-CONICET-UNC), Av. Vélez Sarsfield 1611, Ciudad Universitaria, Córdoba, Argentina.,Instituto de Ciencia y Tecnología de los Alimentos (ICTA-FCEFyN-UNC), Av. Vélez Sarsfield 1611, Ciudad Universitaria, Córdoba, Argentina
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Gutiérrez-Nájera NA, Saucedo-García M, Noyola-Martínez L, Vázquez-Vázquez C, Palacios-Bahena S, Carmona-Salazar L, Plasencia J, El-Hafidi M, Gavilanes-Ruiz M. Sphingolipid Effects on the Plasma Membrane Produced by Addition of Fumonisin B1 to Maize Embryos. PLANTS (BASEL, SWITZERLAND) 2020; 9:E150. [PMID: 31979343 PMCID: PMC7076497 DOI: 10.3390/plants9020150] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/13/2020] [Accepted: 01/15/2020] [Indexed: 12/15/2022]
Abstract
Fumonisin B1 is a mycotoxin produced by Fusarium verticillioides that modifies the membrane properties from animal cells and inhibits complex sphingolipids synthesis through the inhibition of ceramide synthase. The aim of this work was to determine the effect of Fumonisin B1 on the plant plasma membrane when the mycotoxin was added to germinating maize embryos. Fumonisin B1 addition to the embryos diminished plasma membrane fluidity, increased electrolyte leakage, caused a 7-fold increase of sphinganine and a small decrease in glucosylceramide in the plasma membrane, without affecting phytosphingosine levels or fatty acid composition. A 20%-30% inhibition of the plasma membrane H+-ATPase activity was observed when embryos were germinated in the presence of the mycotoxin. Such inhibition was only associated to the decrease in glucosylceramide and the addition of exogenous ceramide to the embryos relieved the inhibition of Fumonisin B1. These results indicate that exposure of the maize embryos for 24 h to Fumonisin B1 allowed the mycotoxin to target ceramide synthase at the endoplasmic reticulum, eliciting an imbalance of endogenous sphingolipids. The latter disrupted membrane properties and inhibited the plasma membrane H+-ATPase activity. Altogether, these results illustrate the mode of action of the pathogen and a plant defense strategy.
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Affiliation(s)
- Nora A. Gutiérrez-Nájera
- Instituto Nacional de Medicina Genómica. Periférico Sur 4124, Torre 2, 5° piso. Álvaro Obregón 01900, Cd. de México, Mexico;
| | - Mariana Saucedo-García
- Instituto de Ciencias Agropecuarias, Universidad Autónoma del Estado de Hidalgo, Avenida Universidad Km. 1, Rancho Universitario, Tulancingo-Santiago, Tulantepec, Tulancingo 43600, Hidalgo, Mexico;
| | - Liliana Noyola-Martínez
- Departamento de Bioquímica, Facultad de Química, UNAM. Cd. Universitaria. Coyoacán 04510, Cd. de México, Mexico; (L.N.-M.); (C.V.-V.); (S.P.-B.); (L.C.-S.); (J.P.)
| | - Christian Vázquez-Vázquez
- Departamento de Bioquímica, Facultad de Química, UNAM. Cd. Universitaria. Coyoacán 04510, Cd. de México, Mexico; (L.N.-M.); (C.V.-V.); (S.P.-B.); (L.C.-S.); (J.P.)
| | - Silvia Palacios-Bahena
- Departamento de Bioquímica, Facultad de Química, UNAM. Cd. Universitaria. Coyoacán 04510, Cd. de México, Mexico; (L.N.-M.); (C.V.-V.); (S.P.-B.); (L.C.-S.); (J.P.)
| | - Laura Carmona-Salazar
- Departamento de Bioquímica, Facultad de Química, UNAM. Cd. Universitaria. Coyoacán 04510, Cd. de México, Mexico; (L.N.-M.); (C.V.-V.); (S.P.-B.); (L.C.-S.); (J.P.)
| | - Javier Plasencia
- Departamento de Bioquímica, Facultad de Química, UNAM. Cd. Universitaria. Coyoacán 04510, Cd. de México, Mexico; (L.N.-M.); (C.V.-V.); (S.P.-B.); (L.C.-S.); (J.P.)
| | - Mohammed El-Hafidi
- Departamento de Bioquímica. Instituto Nacional de Cardiología “Ignacio Chávez”. Juan Badiano 1. Tlalpan 14080, Cd. de México, Mexico;
| | - Marina Gavilanes-Ruiz
- Departamento de Bioquímica, Facultad de Química, UNAM. Cd. Universitaria. Coyoacán 04510, Cd. de México, Mexico; (L.N.-M.); (C.V.-V.); (S.P.-B.); (L.C.-S.); (J.P.)
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7
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Samayoa LF, Cao A, Santiago R, Malvar RA, Butrón A. Genome-wide association analysis for fumonisin content in maize kernels. BMC PLANT BIOLOGY 2019; 19:166. [PMID: 31029090 PMCID: PMC6486958 DOI: 10.1186/s12870-019-1759-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/04/2019] [Indexed: 05/19/2023]
Abstract
BACKGROUND Plant breeding has been proposed as one of the most effective and environmentally safe methods to control fungal infection and to reduce fumonisin accumulation. However, conventional breeding can be hampered by the complex genetic architecture of resistance to fumonisin accumulation and marker-assisted selection is proposed as an efficient alternative. In the current study, GWAS has been performed for the first time for detecting high-resolution QTL for resistance to fumonisin accumulation in maize kernels complementing published GWAS results for Fusarium ear rot. RESULTS Thirty-nine SNPs significantly associated with resistance to fumonisin accumulation in maize kernels were found and clustered into 17 QTL. Novel QTLs for fumonisin content would be at bins 3.02, 5.02, 7.05 and 8.07. Genes with annotated functions probably implicated in resistance to pathogens based on previous studies have been highlighted. CONCLUSIONS Breeding approaches to fix favorable functional variants for genes implicated in maize immune response signaling may be especially useful to reduce kernel contamination with fumonisins without significantly interfering in mycelia development and growth and, consequently, in the beneficial endophytic behavior of Fusarium verticillioides.
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Affiliation(s)
- L. F. Samayoa
- Misión Biológica de Galicia (MBG - CSIC), Box 28, 36080 Pontevedra, Spain
- Present address at department of Crop Science, North Carolina State University, Raleigh, NC 27695 USA
| | - A. Cao
- Misión Biológica de Galicia (MBG - CSIC), Box 28, 36080 Pontevedra, Spain
- Facultad de Biología, Department Biología Vegetal y Ciencias del Suelo, Universidad de Vigo, As Lagoas Marcosende, 36310 Vigo, Spain
- Agrobiología Ambiental, Calidad de Suelos y Plantas (BVE1-UVIGO), Unidad Asociada a la MBG – CSIC, 36143 Pontevedra, Spain
| | - R. Santiago
- Facultad de Biología, Department Biología Vegetal y Ciencias del Suelo, Universidad de Vigo, As Lagoas Marcosende, 36310 Vigo, Spain
- Agrobiología Ambiental, Calidad de Suelos y Plantas (BVE1-UVIGO), Unidad Asociada a la MBG – CSIC, 36143 Pontevedra, Spain
| | - R. A. Malvar
- Misión Biológica de Galicia (MBG - CSIC), Box 28, 36080 Pontevedra, Spain
- Agrobiología Ambiental, Calidad de Suelos y Plantas (BVE1-UVIGO), Unidad Asociada a la MBG – CSIC, 36143 Pontevedra, Spain
| | - A. Butrón
- Misión Biológica de Galicia (MBG - CSIC), Box 28, 36080 Pontevedra, Spain
- Agrobiología Ambiental, Calidad de Suelos y Plantas (BVE1-UVIGO), Unidad Asociada a la MBG – CSIC, 36143 Pontevedra, Spain
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Burstein VL, Guasconi L, Beccacece I, Theumer MG, Mena C, Prinz I, Cervi L, Herrero M, Masih DT, Chiapello LS. IL-17-Mediated Immunity Controls Skin Infection and T Helper 1 Response during Experimental Microsporum canis Dermatophytosis. J Invest Dermatol 2018; 138:1744-1753. [PMID: 29571944 DOI: 10.1016/j.jid.2018.02.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 02/09/2018] [Accepted: 02/15/2018] [Indexed: 01/07/2023]
Abstract
Despite worldwide prevalence of superficial mycoses, the immune response in dermatophytosis has scarcely been investigated. In this study, we developed a model of superficial skin infection in C57BL/6 mice with Microsporum canis, a highly prevalent human pathogen. This model mimics mild inflammatory human dermatophytosis, characterized by neutrophil recruitment and fungal invasion limited to the epidermis and exhibits the establishment of a specific T helper type 17 immune response during infection. By using IL-17RA- or IL-17A/F-deficient mice we showed that, in the absence of a functional IL-17 pathway, M. canis extensively colonizes the epidermis and promotes an exaggerated skin inflammation and a shift to an IFN-γ-mediated (T helper type 1) response. IL-17 signaling was not involved in neutrophil influx to skin or fungal invasion to deeper tissues. Finally, this study shows that skin langerin-expressing cells contribute to the antifungal T helper type 17 response in vivo. In conclusion, these data directly show a dual function of IL-17 cytokines in dermatophytosis by controlling superficial infection and down-modulating a T helper type 1 antifungal response.
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Affiliation(s)
- Verónica L Burstein
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Lorena Guasconi
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Ignacio Beccacece
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Martin G Theumer
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Cristian Mena
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Immo Prinz
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Laura Cervi
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | | | - Diana T Masih
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina
| | - Laura S Chiapello
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Centro de Investigaciones en Bioquímica Clínica e Inmunología, CONICET, Córdoba, Argentina.
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9
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Blacutt AA, Gold SE, Voss KA, Gao M, Glenn AE. Fusarium verticillioides: Advancements in Understanding the Toxicity, Virulence, and Niche Adaptations of a Model Mycotoxigenic Pathogen of Maize. PHYTOPATHOLOGY 2018; 108:312-326. [PMID: 28971734 DOI: 10.1094/phyto-06-17-0203-rvw] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The importance of understanding the biology of the mycotoxigenic fungus Fusarium verticillioides and its various microbial and plant host interactions is critical given its threat to maize, one of the world's most valuable food crops. Disease outbreaks and mycotoxin contamination of grain threaten economic returns and have grave implications for human and animal health and food security. Furthermore, F. verticillioides is a member of a genus of significant phytopathogens and, thus, data regarding its host association, biosynthesis of secondary metabolites, and other metabolic (degradative) capabilities are consequential to both basic and applied research efforts across multiple pathosystems. Notorious among its secondary metabolites are the fumonisin mycotoxins, which cause severe animal diseases and are implicated in human disease. Additionally, studies of these mycotoxins have led to new understandings of F. verticillioides plant pathogenicity and provide tools for research into cellular processes and host-pathogen interaction strategies. This review presents current knowledge regarding several significant lines of F. verticillioides research, including facets of toxin production, virulence, and novel fitness strategies exhibited by this fungus across rhizosphere and plant environments.
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Affiliation(s)
- Alex A Blacutt
- First and fourth authors: Department of Plant Pathology, University of Georgia, Athens 30602; and second, third, and fifth authors: United States Department of Agriculture-Agricultural Research Service, U.S. National Poultry Research Center, Toxicology and Mycotoxin Research Unit, Athens, GA 30605-2720
| | - Scott E Gold
- First and fourth authors: Department of Plant Pathology, University of Georgia, Athens 30602; and second, third, and fifth authors: United States Department of Agriculture-Agricultural Research Service, U.S. National Poultry Research Center, Toxicology and Mycotoxin Research Unit, Athens, GA 30605-2720
| | - Kenneth A Voss
- First and fourth authors: Department of Plant Pathology, University of Georgia, Athens 30602; and second, third, and fifth authors: United States Department of Agriculture-Agricultural Research Service, U.S. National Poultry Research Center, Toxicology and Mycotoxin Research Unit, Athens, GA 30605-2720
| | - Minglu Gao
- First and fourth authors: Department of Plant Pathology, University of Georgia, Athens 30602; and second, third, and fifth authors: United States Department of Agriculture-Agricultural Research Service, U.S. National Poultry Research Center, Toxicology and Mycotoxin Research Unit, Athens, GA 30605-2720
| | - Anthony E Glenn
- First and fourth authors: Department of Plant Pathology, University of Georgia, Athens 30602; and second, third, and fifth authors: United States Department of Agriculture-Agricultural Research Service, U.S. National Poultry Research Center, Toxicology and Mycotoxin Research Unit, Athens, GA 30605-2720
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10
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Qin X, Zhang RX, Ge S, Zhou T, Liang YK. Sphingosine kinase AtSPHK1 functions in fumonisin B1-triggered cell death in Arabidopsis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 119:70-80. [PMID: 28846870 DOI: 10.1016/j.plaphy.2017.08.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 08/01/2017] [Accepted: 08/11/2017] [Indexed: 05/12/2023]
Abstract
The fungal toxin Fumonisin B1 (FB1) is a strong inducer to trigger plant hypersensitive responses (HR) along with increased long chain bases (LCB) and long chain base phosphates (LCBP) contents, though the regulatory mechanism of FB1 action and how the LCB/LCBP signalling cassette functions during the process is still not fully understood. Here, we report sphingosine kinase 1 (SPHK1) as a key factor in FB1-induced HR by modulating the salicylic acid (SA) pathway and reactive oxygen species (ROS) accumulation in Arabidopsis thaliana. Overexpression of SPHK1 increases the FB1-induced accumulations of ROS and SA. The double mutant that simultaneously overexpresses SPHK1 and suppresses the SPPASE or DPL1, two enzymes are mainly responsible for Phyto-sphingosine-1-phosphate (Phyto-S1P) removal, showed enhanced susceptibility to FB1 killing and FB1-induced SA activation than the plants overexpress SPHK1 alone. Exogenous sphingosine-1-phosphate (S1P) can modulate the transcription of the SA-responsive marker gene PR1 in a concentration-dependent biphasic manner. Suppression of SPHK1 decreases SA production whereas promotes jasmonic acid (JA) biosynthesis in response to FB1 applications. Our findings indicate a role of SPHK1 in modulating FB1-triggered cell death via SA and JA pathway interactions.
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Affiliation(s)
- Xiaoya Qin
- State Key Laboratory of Hybrid Rice, Department of Plant Sciences, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Ruo-Xi Zhang
- State Key Laboratory of Hybrid Rice, Department of Plant Sciences, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Shengchao Ge
- State Key Laboratory of Hybrid Rice, Department of Plant Sciences, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Tao Zhou
- State Key Laboratory of Hybrid Rice, Department of Plant Sciences, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Yun-Kuan Liang
- State Key Laboratory of Hybrid Rice, Department of Plant Sciences, College of Life Sciences, Wuhan University, Wuhan 430072, China.
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