Studies on Chestnut Blight (Cryphonectria Parasitica (Murr.) Barr) in North-East Spain

Colinas, Carlos; Usčuplic, M.

doi:10.17660/actahortic.1999.494.74

Cited by 4 publications

(3 citation statements)

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“…France and Portugal) the prevalence of hypovirulence is considerably lower (e.g. Colinas and Uscuplic, ; Bragança et al., ). Thus, both situations, i.e.…”

Section: Appendix B – Detailed Information On the Assessmentmentioning

confidence: 99%

Risk assessment and reduction options for Cryphonectria parasitica in the EU

Jeger¹,

Bragard²,

Chatzivassiliou³

et al. 2016

EFS2

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Following a request from the European Commission, the EFSA Plant Health (PLH) Panel performed a risk assessment for Cryphonectria parasitica in the EU with the aim to assess the current EU phytosanitary requirements and identify the risk reduction options (RROs), which would preserve the protected zone (PZ) status in some parts of the EU, where the pathogen is not known to occur. C. parasitica, a bark-inhabiting fungus causing blight of chestnut trees (Castanea spp.), has a wide distribution in the EU (non-PZs). Three regulatory scenarios were considered for the whole risk assessment (RA) area: the current situation in non-PZs (scenario A 0 ), the situation in the EU without measures (A 1 ) and the current situation in PZs with additional RROs (A 2 ). The Panel considered both the risk of potential spread to PZs of C. parasitica strains currently present in the non-PZs and the risk of introduction from Third Countries and spread in non-PZs of new, virulent strains that would be able to jeopardise the currently effective hypovirulence and cause severe impact. The number of new introductions of C. parasitica into the EU is reduced by approximately a factor 5,000 (median values) in scenario A 2 compared to scenario A 0 . Under the A 0 , A 1 and A 2 scenarios, 2, 3.5 and 0.5 (median values) EU Member States, respectively, are expected to be affected in the next 10 years due to spread of C. parasitica strains. The estimated relative impact on ecosystem services, due to the introduction and spread in the EU of new, virulent strains, is higher for scenario A 1 compared to scenarios A 0 and A 2 . The current EU requirements and the additional RROs considered in scenario A 2 were assessed to be effective in reducing the risk of introduction and spread of C. parasitica, thus preserving the PZ status in some parts of the EU.

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“…France and Portugal) the prevalence of hypovirulence is considerably lower (e.g. Colinas and Uscuplic, ; Bragança et al., ). Thus, both situations, i.e.…”

Section: Appendix B – Detailed Information On the Assessmentmentioning

confidence: 99%

Risk assessment and reduction options for Cryphonectria parasitica in the EU

Jeger¹,

Bragard²,

Chatzivassiliou³

et al. 2016

EFS2

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“…Disease outbreaks, such as the chestnut blight epidemic (caused by Cryphonectria parasitica Murr. Barr), however, have led to a loss of value of chestnut stands (Colinas & Uscuplic, ). More recently, the presence of a red discolouration in the heartwood of chestnut trees has been found frequently within many stands and reported by the forester's association in Catalonia (Tusell & Rovira, ).…”

Section: Introductionmentioning

confidence: 99%

Chestnut Red Stain: Identification of the fungi associated with the costly discolouration of Castanea sativa

2017

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Summary In Europe, fungal pathogens have reduced the overall productivity of sweet chestnut (Castanea sativa) stands and continue to threaten the economic viability of forestry operations. Chestnut Red Stain (CRS) in north‐eastern Spain, locally referred to as Roig, is capable of decreasing the market value of chestnut timber to the point of rendering chestnut coppices uneconomical. Despite its economic importance, the specific cause of this red discolouration is unknown. With the objective of verifying the presence of fungi within the symptomatic wood, and identifying the fungus or suite of fungi associated with the red stain, wood samples were collected and cultured from 37 stumps found in eight recently harvested stands in the Montseny and Montnegre‐Corredor Natural Parks. To separate the fungi associated with CRS from other species inhabiting the chestnut wood, the origin of each fungal culture was mapped in every stump. The fungi were isolated from cultures and identified by sequencing the ITS region. The results provide insight into the fungal community inhabiting chestnut wood and the potential cause of CRS; nine species were identified including two species known to cause decay in chestnut. One of them, Fistulina hepatica, appears to be a likely candidate for the causal agent of CRS. This is the first study reporting the fungi associated with CRS and opens the door to new epidemiological studies focused on F. hepatica.

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“…Barr. This was surely introduced with Asian chestnut seeds in 1914 and 1940(Elorrieta, 1949, although it was first reported in 1943 (Colinas and Uscuplic, 1999). In Cataluña, coppicing is predominant and orchards have been abandoned for a long time.…”

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confidence: 99%

Spanish Chestnut Cultivars

Pereira‐Lorenzo¹,

Ramos‐Cabrer²,

Díaz-Hernández³

et al. 2001

HortSci

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Chestnut (Castanea sativa Mill.) is an important crop in Spain. This inventory of chestnut cultivars complements previous studies. We have located 152 chestnut cultivars in 131 municipalities covering 108.6 ha, with 72 new cultivars in addition to the 80 previously found. Fewer than 50% of these cultivars are extensively cultivated. Chestnuts in Spain are grown from sea level to 1100 m, but are more frequent between 200 and 800 m on northern-facing slopes. Most of the chestnuts are harvested from 25 Oct. to 10 Nov.

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Studies on Chestnut Blight (Cryphonectria Parasitica (Murr.) Barr) in North-East Spain

Cited by 4 publications

References 0 publications

Risk assessment and reduction options for Cryphonectria parasitica in the EU

Risk assessment and reduction options for Cryphonectria parasitica in the EU

Chestnut Red Stain: Identification of the fungi associated with the costly discolouration of Castanea sativa

Spanish Chestnut Cultivars

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