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Surano A, del Grosso C, Musio B, Todisco S, Giampetruzzi A, Altamura G, Saponari M, Gallo V, Mastrorilli P, Boscia D, Saldarelli P. Exploring the xylem-sap to unravel biological features of Xylella fastidiosa subspecies pauca ST53 in immune, resistant and susceptible crop species through metabolomics and in vitro studies. FRONTIERS IN PLANT SCIENCE 2024; 14:1343876. [PMID: 38312355 PMCID: PMC10834688 DOI: 10.3389/fpls.2023.1343876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 12/28/2023] [Indexed: 02/06/2024]
Abstract
Xylella fastidiosa subsp. pauca ST53 (Xfp) is a pathogenic bacterium causing one of the most severe plant diseases currently threatening the olive-growing areas of the Mediterranean, the Olive Quick Decline Syndrome (OQDS). The majority of the olive cultivars upon infections more or less rapidly develop severe desiccation phenomena, while few are resistant (e.g. Leccino and FS17), being less impacted by the infections. The present study contributes to elucidating the basis of the resistance phenomenon by investigating the influence of the composition of the xylem sap of plant species on the rate of bacterial multiplication. Xylem saps from Xfp host and non-host species were used for growing the bacterium in vitro, monitoring bacterial growth, biofilm formation, and the expression of specific genes. Moreover, species-specific metabolites, such as mannitol, quinic acid, tartaric acid, and choline were identified by non-targeted NMR-based metabolomic analysis in olive, grapevine, and citrus. In general, the xylem saps of immune species, including grapevine and citrus, were richer in amino acids, organic acids, and glucose. The results showed greater bacterial growth in the olive cultivar notoriously susceptible to Xfp (Cellina di Nardò), compared to that recorded in the resistant cultivar Leccino. Conversely, higher biofilm formation occurred in Leccino compared to Cellina di Nardò. Using the xylem saps of two Xfp-immune species (citrus and grapevine), a divergent bacterial behavior was recorded: low planktonic growth and biofilm production were detected in citrus compared to the grapevine. A parallel evaluation of the expression of 15 genes showed that Xfp directs its molecular functions mainly to virulence. Overall, the results gained through this multidisciplinary study contribute to extending the knowledge on the host-pathogen interaction, while confirming that the host response and resistance mechanism have a multifactorial basis, most likely with a cumulative effect on the phenotype.
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Affiliation(s)
- Antony Surano
- Institute for Sustainable Plant Protection, National Research Council (CNR), Bari, Italy
| | - Carmine del Grosso
- Institute for Sustainable Plant Protection, National Research Council (CNR), Bari, Italy
| | - Biagia Musio
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Polytechnic University of Bari, Bari, Italy
| | - Stefano Todisco
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Polytechnic University of Bari, Bari, Italy
| | - Annalisa Giampetruzzi
- Institute for Sustainable Plant Protection, National Research Council (CNR), Bari, Italy
| | - Giuseppe Altamura
- CRSFA-Centro Ricerca, Sperimentazione e Formazione in Agricoltura Basile Caramia, Locorotondo, Italy
| | - Maria Saponari
- Institute for Sustainable Plant Protection, National Research Council (CNR), Bari, Italy
| | - Vito Gallo
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Polytechnic University of Bari, Bari, Italy
- Innovative Solutions S.r.l.—Spin-Off Company of Polytechnic University of Bari, Noci, Italy
| | - Piero Mastrorilli
- Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Polytechnic University of Bari, Bari, Italy
- Innovative Solutions S.r.l.—Spin-Off Company of Polytechnic University of Bari, Noci, Italy
| | - Donato Boscia
- Institute for Sustainable Plant Protection, National Research Council (CNR), Bari, Italy
| | - Pasquale Saldarelli
- Institute for Sustainable Plant Protection, National Research Council (CNR), Bari, Italy
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Bodino N, Cavalieri V, Dongiovanni C, Saponari M, Bosco D. Bioecological Traits of Spittlebugs and Their Implications for the Epidemiology and Control of the Xylella fastidiosa Epidemic in Apulia (Southern Italy). PHYTOPATHOLOGY 2023; 113:1647-1660. [PMID: 36945728 DOI: 10.1094/phyto-12-22-0460-ia] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Spatial-temporal dynamics of spittlebug populations, together with transmission biology, are of major importance to outline the disease epidemiology of Xylella fastidiosa subsp. pauca in Apulian olive groves. The spread rate of X. fastidiosa is mainly influenced by (i) the pathogen colonization of the host plant; (ii) the acquisition of the pathogen by the vector from an infected plant, and its inoculation to healthy plants; (iii) the vector population dynamics and abundance at different spatial scales; and (iv) the dispersal of the vector. In this contribution we summarize the recent advances in research on insect vectors' traits-points ii, iii, and iv-focusing on those most relevant to X. fastidiosa epidemic in Apulia. Among the vectors' bioecological traits influencing the X. fastidiosa epidemic in olive trees, we emphasize the following: natural infectivity and transmission efficiency, phenological timing of both nymphal and adult stage, the role of seminatural vegetation as a vector reservoir in the agroecosystem and landscape, and preferential and directional dispersal capabilities. Despite the research on X. fastidiosa vectors carried out in Europe in the last decade, key uncertainties on insect vectors remain, hampering a thorough understanding of pathogen epidemiology and the development of effective and targeted management strategies. Our goal is to provide a structured and contextualized review of knowledge on X. fastidiosa vectors' key traits in the Apulian epidemic, highlighting information gaps and stimulating novel research pathways on X. fastidiosa pathosystems in Europe. [Formula: see text] Copyright © 2023 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Nicola Bodino
- CNR-Istituto per la Protezione Sostenibile delle Piante, 10135 Torino, Italy
| | - Vincenzo Cavalieri
- CNR-Istituto per la Protezione Sostenibile delle Piante, SS Bari, 70126 Bari, Italy
| | - Crescenza Dongiovanni
- CRSFA-Centro di Ricerca, Sperimentazione e Formazione in Agricoltura Basile Caramia, 70010 Locorotondo (BA), Italy
| | - Maria Saponari
- CNR-Istituto per la Protezione Sostenibile delle Piante, SS Bari, 70126 Bari, Italy
| | - Domenico Bosco
- CNR-Istituto per la Protezione Sostenibile delle Piante, 10135 Torino, Italy
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, 10095 Grugliasco (TO), Italy
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Carezzano ME, Paletti Rovey MF, Cappellari LDR, Gallarato LA, Bogino P, Oliva MDLM, Giordano W. Biofilm-Forming Ability of Phytopathogenic Bacteria: A Review of its Involvement in Plant Stress. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12112207. [PMID: 37299186 DOI: 10.3390/plants12112207] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/24/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023]
Abstract
Phytopathogenic bacteria not only affect crop yield and quality but also the environment. Understanding the mechanisms involved in their survival is essential to develop new strategies to control plant disease. One such mechanism is the formation of biofilms; i.e., microbial communities within a three-dimensional structure that offers adaptive advantages, such as protection against unfavorable environmental conditions. Biofilm-producing phytopathogenic bacteria are difficult to manage. They colonize the intercellular spaces and the vascular system of the host plants and cause a wide range of symptoms such as necrosis, wilting, leaf spots, blight, soft rot, and hyperplasia. This review summarizes up-to-date information about saline and drought stress in plants (abiotic stress) and then goes on to focus on the biotic stress produced by biofilm-forming phytopathogenic bacteria, which are responsible for serious disease in many crops. Their characteristics, pathogenesis, virulence factors, systems of cellular communication, and the molecules implicated in the regulation of these processes are all covered.
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Affiliation(s)
- María Evangelina Carezzano
- Instituto de Biotecnología Ambiental y Salud (INBIAS-CONICET), Córdoba X5804BYA, Argentina
- Departamento de Biología Molecular; Universidad Nacional de Río Cuarto (UNRC), Río Cuarto, Córdoba X5804BYA, Argentina
- Departamento de Microbiología e Inmunología, UNRC, Río Cuarto, Córdoba X5804BYA, Argentina
| | - María Fernanda Paletti Rovey
- Instituto de Biotecnología Ambiental y Salud (INBIAS-CONICET), Córdoba X5804BYA, Argentina
- Departamento de Microbiología e Inmunología, UNRC, Río Cuarto, Córdoba X5804BYA, Argentina
| | - Lorena Del Rosario Cappellari
- Instituto de Biotecnología Ambiental y Salud (INBIAS-CONICET), Córdoba X5804BYA, Argentina
- Departamento de Biología Molecular; Universidad Nacional de Río Cuarto (UNRC), Río Cuarto, Córdoba X5804BYA, Argentina
| | | | - Pablo Bogino
- Instituto de Biotecnología Ambiental y Salud (INBIAS-CONICET), Córdoba X5804BYA, Argentina
- Departamento de Biología Molecular; Universidad Nacional de Río Cuarto (UNRC), Río Cuarto, Córdoba X5804BYA, Argentina
| | - María de Las Mercedes Oliva
- Instituto de Biotecnología Ambiental y Salud (INBIAS-CONICET), Córdoba X5804BYA, Argentina
- Departamento de Microbiología e Inmunología, UNRC, Río Cuarto, Córdoba X5804BYA, Argentina
| | - Walter Giordano
- Instituto de Biotecnología Ambiental y Salud (INBIAS-CONICET), Córdoba X5804BYA, Argentina
- Departamento de Biología Molecular; Universidad Nacional de Río Cuarto (UNRC), Río Cuarto, Córdoba X5804BYA, Argentina
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