Proposal of Xanthomonas translucens pv. pistaciae pv. nov., pathogenic to pistachio (Pistacia vera)

Giblot‐Ducray, D.; Marefat, Alireza; Gillings, Michael R.; Parkinson, Neil; Bowman, John P.; Ophel-Keller, K.; Taylor, C.; Facelli, Evelina; Scott, Eileen S.

doi:10.1016/j.syapm.2009.08.001

Cited by 23 publications

(14 citation statements)

References 22 publications

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“…Particular cassettes and arrays are associated with specific strains and pathovars, suggesting a role for those gene cassettes in conferring pathogenicity on particular host plants (18). The correspondence between individual cassette arrays and xanthomonad species, strains, and pathovars means that PCR typing of cassette arrays can be used for identification and epidemiological studies (41)(42)(43)(44).…”

Section: Diversity Of Chromosomal Integronsmentioning

confidence: 99%

Integrons: Past, Present, and Future

Gillings

2014

Microbiol Mol Biol Rev

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547

464

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SUMMARY Integrons are versatile gene acquisition systems commonly found in bacterial genomes. They are ancient elements that are a hot spot for genomic complexity, generating phenotypic diversity and shaping adaptive responses. In recent times, they have had a major role in the acquisition, expression, and dissemination of antibiotic resistance genes. Assessing the ongoing threats posed by integrons requires an understanding of their origins and evolutionary history. This review examines the functions and activities of integrons before the antibiotic era. It shows how antibiotic use selected particular integrons from among the environmental pool of these elements, such that integrons carrying resistance genes are now present in the majority of Gram-negative pathogens. Finally, it examines the potential consequences of widespread pollution with the novel integrons that have been assembled via the agency of human antibiotic use and speculates on the potential uses of integrons as platforms for biotechnology.

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Section: Diversity Of Chromosomal Integronsmentioning

confidence: 99%

Integrons: Past, Present, and Future

Gillings

2014

Microbiol Mol Biol Rev

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547

464

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“…The causal bacterium was initially classified in a presumptive way as a member of Xanthomonas translucens , mainly known as pathogens of Graminae. Recently (Giblot‐Ducray et al , 2009) the name X.t. pv.…”

Section: Pest‐specific Methods (Conventional and Molecular)mentioning

confidence: 99%

Diagnostic methods for phytopathogenic bacteria of stone fruits and nuts in COST 873

Janse

2010

EPPO Bulletin

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Different diagnostic methods used or developed in the EU‐COST2 873 project ‘Bacterial diseases of stone fruits and nuts’ are presented. The methods concern detection and identification of the plant pathogenic bacteria Xylella fastidiosa (EPPO A1 list), Xanthomonas arboricola pv corylina, X.a. pv. pruni, Pseudomonas syringae pv. persicae (A2 list pathogens), Agrobacterium tumefaciens, Brenneria nigrifluens and B. rubrifaciens, P. amygdali, P. avellanae, P.s. pv. avii, P.s. pv. morsprunorum, P.s. pv. syringae, X.a. pv. juglandis. Furthermore, a recently described xanthomonas species (proposed name X. translucens pv. pistachiae), causing a new disease on pistachio, viz. Pistachio decline, in Australia and the recently renamed Xanthomonas citri pv. mangiferaeindicae on mango are included. The methods range from classical ones such as nutritional tests, use of (semi‐)selective media, PCR, fatty acid analysis, serology and pathogenicity tests as well as (more) modern ones such as free flow capillary electrophoresis, real‐time PCR, rep‐PCR, fAFLP and sequencing of open reading frames (ORFs) and/or housekeeping genes such as gyrB and rpoD. The usefulness of these methods are outlined and reference made to publications where they were successfully used. Development of useful (molecular) tools are also indicated. Whole genome sequencing has been performed for Pantoea agglomerans (a relevant biocontrol agent) by the Swiss laboratory and initiated for X. a. pv. pruni by the French laboratory in cooperation with the Swiss and Italian laboratories and development of a microarray test has been initiated by the Swiss laboratory, Details of meetings and training programmes throughout the region are elaborated.

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“…pistaciae, because it could not be classified into any of pathovars in X . translucens even though they are closely related (Giblot‐Ducray et al , ). The X .…”

Section: Classification Nomenclature and Identification Of X Transmentioning

confidence: 99%

“…secalis strains were available for analyses, but they were shown to be clustered with pv. undulosa (Bragard et al , ; Giblot‐Ducray et al , ; Curland et al , ). Using a few strains isolated from wheat and barley, we showed that wheat strains ( undulosa ) were capable of causing lesions and water‐soaking symptoms on wheat, barley, and triticale (× Triticosecale ), while barley strains ( translucens ) were only able to cause lesions and water‐soaking symptom on barley (Sapkota et al , ; Figure ).…”

Section: Classification Nomenclature and Identification Of X Transmentioning

confidence: 99%

The translucens group of Xanthomonas translucens: Complicated and important pathogens causing bacterial leaf streak on cereals

Sapkota

Mohamed

Liu

2020

Molecular Plant Pathology

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Xanthomonas translucens is a group of gram‐negative bacteria that can cause important diseases in cereal crops and forage grasses. Different pathovars have been defined according to their host ranges, and molecular and biochemical characteristics. Pathovars have been placed into two major groups: translucens and graminis. The translucens group contains the pathovars causing bacterial leaf streak (BLS) on cereal crops such as wheat, barley, triticale, rye, and oat. In recent years, BLS has re‐emerged as a major problem for many wheat‐ and barley‐producing areas worldwide. The biology of the pathogens and the host–pathogen interactions in cereal BLS diseases were poorly understood. However, recent genome sequence data have provided an insight into the bacterial phylogeny and identification and pathogenicity/virulence. Furthermore, identification of sources of resistance to BLS and mapping of the resistance genes have been initiated. Taxonomy Kingdom Bacteria; Phylum Proteobacteria; Class Gammaproteobacteria; Order Xanthomonadales; Family Xanthomonadaceae; Genus Xanthomonas; Species X. translucens; translucens group pathovars: undulosa, translucens, cerealis, hordei, and secalis; graminis group pathovars: arrhenatheri, graminis, poae, phlei; newly established pathovar: pistaciae. Host range X. translucens mainly infects plant species in the Poaceae with the translucens group on cereal crop species and the graminis group on forage grass species. However, some strains have been isolated from, and are able to infect, ornamental asparagus and pistachio trees. Most pathovars have a narrow host range, while a few can infect a broad range of hosts. Genome The complete genome sequence is available for two X. translucens pv. undulosa strains and one pv. translucens strain. A draft genome sequence is also available for at least one strain from each pathovar. The X. translucens pv. undulosa strain Xt4699 was the first to have its complete genome sequenced, which consists of 4,561,137 bp with total GC content approximately at 68% and 3,528 predicted genes. Virulence mechanisms Like most xanthomonads, X. translucens utilizes a type III secretion system (T3SS) to deliver a suite of T3SS effectors (T3Es) inside plant cells. Transcription activator‐like effectors, a special group of T3Es, have been identified in most of the X. translucens genomes, some of which have been implicated in virulence. Genetic factors determining host range virulence have also been identified.

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Proposal of Xanthomonas translucens pv. pistaciae pv. nov., pathogenic to pistachio (Pistacia vera)

Cited by 23 publications

References 22 publications

Integrons: Past, Present, and Future

Integrons: Past, Present, and Future

Diagnostic methods for phytopathogenic bacteria of stone fruits and nuts in COST 873

The translucens group of Xanthomonas translucens: Complicated and important pathogens causing bacterial leaf streak on cereals

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