<i>Xanthomonas arboricola</i> pv. <i>pruni</i>

山口修平,; 伊山公二,; 田方康平,; 夏秋啓子,; 根岸寛光,; 篠原弘亮,

doi:10.1111/j.1365-2338.2006.00925.x

Cited by 38 publications

(3 citation statements)

References 13 publications

(15 reference statements)

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“…Symptoms of bacterial spot of stone fruits can be observed on leaves, young and fully developed fruits, twigs, branches and trunks (EPPO, 2003(EPPO, , 2006. In orchards, although affected trees can develop symptoms on different parts, they may appear healthy if not inspected closely.…”

Section: Disease Symptomsmentioning

confidence: 99%

PM 7/064 (2) Xanthomonas arboricola pv. pruni

2021

EPPO Bulletin

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Section: Disease Symptomsmentioning

confidence: 99%

PM 7/064 (2) Xanthomonas arboricola pv. pruni

2021

EPPO Bulletin

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“…This pathogen induces water-soaked spots on the surface of leaves, fruits, and shoots that can become brown and necrotized ( Civerolo and Hatting, 1993 ). Its significance lies in the fact that severe leaf infections lead to diminished vitality of the trees and the highly infected fruits are simply unmarketable, while twig cankers combined with early defoliation may result in complete destruction of the plant ( EPPO, 2006 ). The management of this disease is mainly limited to prevention – i.e.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial effect of essential oils and their components against Xanthomonas arboricola pv. pruni revealed by microdilution and direct bioautographic assays

Nagy

Móricz

Böszörményi

et al. 2023

Front. Cell. Infect. Microbiol.

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Bacterial spot of stone fruits caused by Xanthomonas arboricola pv. pruni (Xap) is one of the most significant diseases of several Prunus species. Disease outbreaks can result in severe economic losses while the control options are limited. Antibacterial efficacy of essential oils (EOs) of thyme, cinnamon, clove, rosemary, tea tree, eucalyptus, lemon grass, citronella grass, and lemon balm was assessed against two Hungarian Xap isolates. The minimal inhibitory concentration (MIC) was determined by broth microdilution assay and for the identification of active EOs’ components a newly introduced high-performance thin-layer chromatography (HPTLC)-Xap (direct bioautography) method combined with solid-phase microextraction-gas chromatography/mass spectrometry (SPME-GC/MS) was applied. All EOs inhibited both bacterium isolates, but cinnamon proved to be the most effective EO with MIC values of 31.25 µg/mL and 62.5 µg/mL, respectively. Compounds in the antibacterial HPTLC zones were identified as thymol in thyme, trans-cinnamaldehyde in cinnamon, eugenol in clove, borneol in rosemary, terpinen-4-ol in tea tree, citral (neral and geranial) in lemon grass and lemon balm, and citronellal and nerol in citronella grass. Regarding active compounds, thymol had the highest efficiency with a MIC value of 50 µg/mL. Antibacterial effects of EOs have already been proven for several Xanthomonas species, but to our knowledge, the studied EOs, except for lemon grass and eucalyptus, were tested for the first time against Xap. Furthermore, in case of Xap, this is the first report demonstrating that direct bioautography is a fast and suitable method for screening anti-Xap components of complex matrices, like EOs.

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“…CBC is considered one of the major threat for citriculture and it is endemic in many citrus production zones, even though, Xcc is not present in other areas such as the Mediterranean basin or California in USA, where these bacteria are regulated as quarantinable [4]. BSF is worldwide distributed with a presence in most Prunus -growing regions, however Xap is still a quarantine organism in some areas like the European Union [5,6]. CBC is defined as a tropical or subtropical disease; meanwhile, BSF occurs mostly in temperate areas.…”

Section: Introductionmentioning

confidence: 99%

Xanthomonas citri subsp. citri and Xanthomonas arboricola pv. pruni: Comparative analysis of two pathogens producing similar symptoms in different host plants

et al. 2019

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Comparative studies in Xanthomonas have provided a vast amount of data that enabled to deepen in the knowledge of those factors associated with virulence and Xanthomonas plant interaction. The species of this genus present a wide range of host plants and a large number of studies have been focused to elucidate which mechanism are involved in this characteristic. In this study, comparative genomic and phenotypic analysis were performed between X . citri subsp. citri ( Xcc ), one of the most studied pathogens within Xanthomonas , and X . arboricola pv. pruni ( Xap ), a pathogen which has aroused great interest in recent time. The work was aimed to find those elements that contribute to their host divergence despite the convergence in the symptoms that each species cause on Citrus spp. and Prunus spp., respectively. This study reveals a set of genes that could be putatively associated with the adaptation of these pathogens to their hosts, being the most remarkable those involved in environmental sensing systems such as the case of the TonB-dependent transporters, the sensors of the two-component system and the methyl accepting chemotaxis proteins. Other important variants were found in processes related to the decomposition of the cell wall as could be appreciated by their dissimilar set of cell-wall degrading enzymes. Type three effectors, as one of the most important factors in delineating the host specificity in Xanthomonas , also showed a different array when comparing both species, being some of them unique to each pathogen. On the other hand, only small variations could be connected to other features such as the motility appendages and surface adhesion proteins, but these differences were accompanied by a dissimilar capacity to attach on host and non-host leaf surface. The molecular factors found in this work provide the basis to perform a more in-depth functional analyses that unveil those actual factors associated with pathogenesis and host specificity in Xcc and Xap .

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Xanthomonas arboricola pv. pruni

Abstract: Diagnostics 1 DiagnosticXanthomonas arboricola pv. pruni Specific scopeThis standard describes a diagnostic protocol for Xanthomonas arboricola pv. pruni.

Cited by 38 publications

References 13 publications

PM 7/064 (2) Xanthomonas arboricola pv. pruni

PM 7/064 (2) Xanthomonas arboricola pv. pruni

Antibacterial effect of essential oils and their components against Xanthomonas arboricola pv. pruni revealed by microdilution and direct bioautographic assays

Xanthomonas citri subsp. citri and Xanthomonas arboricola pv. pruni: Comparative analysis of two pathogens producing similar symptoms in different host plants

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