Genetic and Virulence Diversity in <i>Verticillium dahliae</i> Populations Infecting Artichoke in Eastern-Central Spain

Jiménez-Dı́az, Rafael M.; Mercado‐Blanco, Jesús; Olivares-García, Concepción; Collado-Romero, Melania; Bejarano-Alcázar, José; Rodrı́guez-Jurado, Dolores; Giménez-Jaime, A.; García‐Jiménez, J.; Armengol, Josep

doi:10.1094/phyto-96-0288

Cited by 72 publications

(112 citation statements)

References 39 publications

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“…There are six main VCGs in V. dahliae (16,71). VCG3 and VCG6 (16) are comprised of only one strain each, but VCGs 1, 2, and 4 are cosmopolitan and associated with a wide host range.…”

Section: Population Biology Of Verticillium Sppmentioning

confidence: 99%

“…VCG3 and VCG6 (16) are comprised of only one strain each, but VCGs 1, 2, and 4 are cosmopolitan and associated with a wide host range. All VCGs exhibit broad virulence, but some show differential aggressiveness (35,42,71,72,105,125,160). VCG4 was subdivided into VCG4A and VCG4B; with the former more prevalent and damaging on potato (72,148).…”

Section: Population Biology Of Verticillium Sppmentioning

confidence: 99%

“…Whereas strains of V. albo-atrum were divided into two groups based on their virulence and aggressiveness to lucerne (a.k.a. alfalfa, Medicago sativa), V. dahliae is divided based on vegetative compatibility into six groups (16,71). Nevertheless, vegetative compatibility groups (VCGs) do not describe the overall genetic diversity among strains, gene flow, or the potential for recombination.…”

Section: Introductionmentioning

confidence: 99%

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Diversity, Pathogenicity, and Management of Verticillium Species

Klosterman

Atallah

Vallad

et al. 2009

Annu. Rev. Phytopathol.

648

564

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The genus Verticillium encompasses phytopathogenic species that cause vascular wilts of plants. In this review, we focus on Verticillium dahliae, placing emphasis on the controversy surrounding the elevation of a long-spored variant as a new species, recent advances in the analysis of compatible and incompatible interactions, highlighted by the use of strains expressing fluorescent proteins, and the genetic diversity among Verticillium spp. A synthesis of the approaches to explore genetic diversity, gene flow, and the potential for cryptic recombination is provided. Control of Verticillium wilt has relied on a panoply of chemical and nonchemical strategies, but is beset with environmental or site-specific efficacy problems. Host resistance remains the most logical choice, but is unavailable in most crops. The genetic basis of resistance to Verticillium wilt is unknown in most crops, as are the subcellular signaling mechanisms associated with Ve-mediated, race-specific resistance. Increased understanding in each of these areas promises to facilitate management of Verticillium wilts across a broad range of crops.

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“…There are six main VCGs in V. dahliae (16,71). VCG3 and VCG6 (16) are comprised of only one strain each, but VCGs 1, 2, and 4 are cosmopolitan and associated with a wide host range.…”

Section: Population Biology Of Verticillium Sppmentioning

confidence: 99%

Section: Population Biology Of Verticillium Sppmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Diversity, Pathogenicity, and Management of Verticillium Species

Klosterman

Atallah

Vallad

et al. 2009

Annu. Rev. Phytopathol.

648

564

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“…The differentiation into subgroups A and B is based on the frequency and vigor of nit mutant complementation (Joaquim and Rowe 1991;Strausbaugh 1993). Other VCGs, either less prevalent or localized in well-defined geographical areas, have been reported as well (namely VCG3, VCG5, VCG6, VCGBr or VCGBa) (Bhat and Subbarao 1999;Bhat et al 2003;Joaquim and Rowe 1990;Strausbaugh et al 1992;Jiménez-Díaz et al 2006). Regarding to V. dahliae isolates infecting olive, only representatives of VCG1A, VCG2A, VCG2B, and VCG4B have so far been identified (Pérez-Artés et al 2000;Cherrab et al 2002;Tantaoui et al 2002;Tsror and Levin 2003;Bellahcene et al 2005b;Sanei et al 2005;Collado-Romero et al 2006;Dervis et al 2007Dervis et al , 2010 (Fig.…”

Section: Pathogenicity Groupsmentioning

confidence: 99%

Verticillium wilt of olive: a case study to implement an integrated strategy to control a soil-borne pathogen

2010

Self Cite

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Olive (Olea europaea L.) is one of the first domesticated and cultivated tree species and has historical, social and economical relevance. However, its future as a strategic commodity in Mediterranean agriculture is threatened by diverse biotic (traditional and new/emerging pests and diseases) and abiotic (erosion, climate change) menaces. These problems could also be of relevance for new geographical areas where olive cultivation is not traditional but is increasingly spreading (i.e., South America, Australia, etc). One of the major constraints for olive cultivation is Verticillium wilt, a vascular disease caused by the soil-borne fungus Verticillium dahliae Kleb. In this review we describe how Verticillium wilt of olive (VWO) has become a major problem for olive cultivation during the last two decades. Similar to other vascular diseases, VWO is difficult to manage and single control measure are mostly ineffective. Therefore, an integrated disease management strategy that fits modern sustainable agriculture criteria must be implemented. Multidisciplinary research efforts and advances to understand this pathosystem and to develop appropriate control measures are summarized. The main conclusion is that a holistic approach is the best strategy to effectively control VWO, integrating biological, chemical, physical, and cultural approaches.

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“…Isolates of the D pathotype from different geographic origins have been reported to be moderately to highly virulent but non-defoliating on artichoke, celery, flax, safflower and sunflower, mildly virulent on aubergine and tomato, and non-pathogenic to cowpea and muskmelon (Schnathorst and Mathre, 1966;Jiménez-Díaz et al, 2006;Korolev et al, 2008). According to Korolev et al (2008), isolates of the D pathotype from Israel were highly virulent on watermelon.…”

Section: Intraspecific Diversitymentioning

confidence: 99%

Scientific opinion on the pest categorisation of Verticillium dahliae Kleb

Rossi¹

2014

EFS2

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The European Commission requested the EFSA Panel on Plant Health to perform a pest categorisation of Verticillium dahliae Kleb., the fungal pathogen responsible for many Verticillium wilt diseases. V. dahliae is a single taxonomic entity, and sensitive and reliable methods exist for its detection and identification. V. dahliae is a highly polyphagous pathogen, affecting, overall, 400 cultivated and non-cultivated plant species. It is a hostadapted rather than a host-specific pathogen and has the ability to continuously widen its host range and develop races/pathotypes that can overcome host resistance or be more virulent on known hosts and host cultivars. V. dahliae is a vascular pathogen that causes wilt and plant death, thus impairing the growth and shortening the lifespan of its hosts. The pathogen is currently present in most parts of the risk assessment area, where yield reductions up to 50 % or more have been reported on some high value crops, including cotton, olive, potato, strawberry and ornamentals. There are no obvious eco-climatic factors limiting its potential establishment and spread in the non-infested part of the risk assessment area, where hosts are present. Once established, the pathogen can spread by both natural and human-assisted means. Movement of infected host plants for planting, especially asymptomatic plants, and seeds can introduce the pathogen (and its highly virulent races/pathotypes) into new areas. Application of integrated management strategies combined with disease risk assessment (assessment of the available soil-borne inoculum, determination of races/pathotypes present in the site, field cropping history) may reduce the impacts of Verticillium wilt in the risk assessment area, but it cannot eliminate the pathogen. V. dahliae is listed in Annex IIAII of Directive 2000/29/EC and, despite its wide host range, it is regulated only on Humulus lupulus (hop), for which the pathogen is considered of minor importance compared to V. nonalfalfae.

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Genetic and Virulence Diversity in Verticillium dahliae Populations Infecting Artichoke in Eastern-Central Spain

Cited by 72 publications

References 39 publications

Diversity, Pathogenicity, and Management of Verticillium Species

Diversity, Pathogenicity, and Management of Verticillium Species

Verticillium wilt of olive: a case study to implement an integrated strategy to control a soil-borne pathogen

Scientific opinion on the pest categorisation of Verticillium dahliae Kleb

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