<i>Xanthomonas citri</i> pv. <i>citri</i> Pathotypes: LPS Structure and Function as Microbe‐Associated Molecular Patterns

Lorenzo, Flaviana Di; Silipo, Alba; Gersby, Lotte Bettina Andersen; Palmigiano, Angelo; Lanzetta, Rosa; Garozzo, Domenico; Boyer, Claudine; Pruvost, Olivier; Newman, Mari‐Anne; Molinaro, Antonio

doi:10.1002/cbic.201600671

Cited by 13 publications

(7 citation statements)

References 54 publications

(175 reference statements)

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“…In addition, some lipid A structures are available (Silipo et al 2004). Exact O-antigen repeating unit structures were elucidated for the Xcci strains NCPPB 3562 and CFBP 2911 (di Lorenzo et al 2017), for X. oryzae pv. oryzycola BLS303 (Wang, Vinogradov and Bogdanove 2013) as well as for several other xanthomonads (Molinaro et al 2000a(Molinaro et al , 2000b(Molinaro et al , 2001.…”

Section: Xanthomonas Lpsmentioning

confidence: 99%

Mechanistic insights into host adaptation, virulence and epidemiology of the phytopathogenXanthomonas

Potnis

Dow

et al. 2019

FEMS Microbiology Reviews

169

165

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Xanthomonas is a well-studied genus of bacterial plant pathogens whose members cause a variety of diseases in economically important crops worldwide. Genomic and functional studies of these phytopathogens have provided significant understanding of microbial-host interactions, bacterial virulence and host adaptation mechanisms including microbial ecology and epidemiology. In addition, several strains of Xanthomonas are important as producers of the extracellular polysaccharide, xanthan, used in the food and pharmaceutical industries. This polymer has also been implicated in several phases of the bacterial disease cycle. In this review, we summarise the current knowledge on the infection strategies and regulatory networks controlling virulence and adaptation mechanisms from Xanthomonas species and discuss the novel opportunities that this body of work has provided for disease control and plant health.

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Section: Xanthomonas Lpsmentioning

confidence: 99%

Mechanistic insights into host adaptation, virulence and epidemiology of the phytopathogenXanthomonas

Potnis

Dow

et al. 2019

FEMS Microbiology Reviews

169

165

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“…Lipopolysaccharide (LPS) is a central outer membrane component for gram-negative bacteria, and exhibits structural adaptability that is contributed especially by its O-antigen part(68,70).Bacterial O-antigen structure modification plays an important role in evasion of host immunity(71), and has the potential to change host-bacteria interactions(68,70,72). In plant pathogenic bacteria LPS components are important virulence determinants(73,74), that activate a variety of defense-related responses(73,(75)(76)(77). In P. fluorescens the O-antigen component has been implicated to induce systemic resistance in radish(78) and Arabidopsis(79).…”

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confidence: 99%

Experimental evolution-driven identification of Arabidopsis rhizosphere competence genes in Pseudomonas protegens

Jiang

Pieterse

et al. 2020

Preprint

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Beneficial plant root-associated microorganisms carry out a range of functions that are essential for plant performance. Establishment of a bacterium on plant roots, however, requires overcoming several challenges, including the ability to outcompete neighboring microorganisms and suppression of plant immunity. Forward and reverse genetics approaches have led to the identification of diverse mechanisms that are used by beneficial microorganisms to overcome these challenges such as the production of iron-chelating compounds, biofilm formation, or downregulation of plant immunity. However, how such mechanisms have developed from an evolutionary perspective is much less understood. In an attempt to study bacterial adaptation in the rhizosphere, we employed an experimental evolution approach to track the physiological and genetic dynamics of root-dwelling Pseudomonas protegens CHA0 in the Arabidopsis thaliana rhizosphere under axenic conditions. This simplified binary one plant, and one bacterium system allows for the amplification of key adaptive mechanisms for bacterial rhizosphere colonization. We found that mutations in global regulators, as well as in genes for siderophore production, cell surface decoration, attachment, and motility accumulated in parallel in our evolutionary experiment, underlining several different strategies of bacterial adaptation to the rhizosphere. In total we identified 35 mutations, including single-nucleotide polymorphisms, smaller indels and larger deletions, distributed over 28 genes in total. Altogether these results underscore the strength of experimental evolution to identify key genes and pathways for bacterial rhizosphere colonization, as well as highlighting a methodology for the development of elite beneficial microorganisms with enhanced root-colonizing capacities that can support sustainable agriculture in the future.

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“…Such a response is thought to be triggered by multiple pathogen-associated molecular patterns (PAMPs) including the bacterial flagellin, adhesins, lipopolysaccharides and components of the Hrp (hypersensitive response and pathogenicity) pilus. This idea is supported by studies that show that, in addition to playing a role in cell adhesion, motility and biofilm formation, thus contributing to bacterial virulence, these molecules can also trigger defense responses in both host and non-host plants (Gottig et al 2009;Casabuono et al 2011;Petrocelli et al 2012;Di Lorenzo et al 2017;Garavaglia et al 2016;Yan et al 2012;Gottig et al 2018;Andrade et al 2014).…”

Section: Living Inside the Host: Xanthomonas Citri -Host Interactionmentioning

confidence: 87%

Xanthomonas citri subsp. citri: host interaction and control strategies

Martins

Andrade

Benedetti

et al. 2020

Trop. plant pathol.

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Citrus is one of the most ancient fruit crops cultivated in the world. For many countries, citrus production is an important source of revenues. However, despite the richness of citrus production worldwide, fruit yields are constantly threatened by diseases that cause serious economic and social impacts to growers and consumers. One such example is citrus canker, a disease that affects all commercial citrus varieties and for which there is no cure. Currently, control measures for citrus canker are restricted to the application of copper-based compounds and the elimination of infected trees to prevent pathogen spreading in the field. However, new alternatives for the control of this disease are being developed, spanning through transgenic plants to innovative chemicals and biological control. New genome editing approaches and a repertoire of plant defense-related genes have been exploited to produce citrus lineages more tolerant to X. citri. In addition, a series of new molecules have been tested to not only inhibit X. citri growth but to also boost the plant immune system to suppress disease progression. In this review, we provide the state of art of all citrus canker control measures in use today, highlighting their utility and drawbacks and commenting on novel strategies to better control this important citrus disease.

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Xanthomonas citri pv. citri Pathotypes: LPS Structure and Function as Microbe‐Associated Molecular Patterns

Cited by 13 publications

References 54 publications

Mechanistic insights into host adaptation, virulence and epidemiology of the phytopathogenXanthomonas

Mechanistic insights into host adaptation, virulence and epidemiology of the phytopathogenXanthomonas

Experimental evolution-driven identification of Arabidopsis rhizosphere competence genes in Pseudomonas protegens

Xanthomonas citri subsp. citri: host interaction and control strategies

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