Observations on Armillaria occurrence in declining oak woods of southern Italy

Luisi, N.; Sicoli, Giovanni; Lerario, P.

doi:10.1051/forest:19960221

Cited by 20 publications

(12 citation statements)

References 2 publications

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“…et Romagn. is the most widespread in oak stands of southern Italy, often as an opportunistic pathogen in trees affected by oak decline (Luisi et al., 1996). A previous epidemiological investigation carried out in one of these stands, and based on VC tests after sampling more than 100 isolates of this fungus, needed further confirmation on the genetic diversity of that population (de Gioia et al., 2003).…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity within an Italian Population of Forest Armillaria gallica Isolates as Assessed by RAPD‐PCR Analysis

Gatto¹,

Sicoli²,

Luisi³

2009

Journal of Phytopathology

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The genus Armillaria includes harmful fungal pathogens that cause root rot and wood decay in a broad range of host plants throughout the world. The aim of this study was to detect, by means of Random amplified polymorphic DNA-polymerase chain reaction (RAPD-PCR) markers, the level of intraspecific variability within isolates of an Armillaria gallica population sampled from a Quercus spp. stand located in Gravina in Puglia, southern Italy. UPGMA cluster analysis of RAPD profiles generated by decamer primers grouped the isolates in subclusters demonstrating relatively low intraspecific genetic variability. Moreover, RAPD pattern analysis yielded clusters which did not correspond to the groups discriminated by vegetative compatibility tests performed by a previous investigation on the same population. The findings of this research pose the question of whether somatic incompatibility, which involves an undefined number of genes and alleles per gene, might still be considered an effective tool for the epidemiological studies of A. gallica, whereas molecular analyses are more useful for assessing genomic variation within the species.

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Section: Introductionmentioning

confidence: 99%

Genetic Diversity within an Italian Population of Forest Armillaria gallica Isolates as Assessed by RAPD‐PCR Analysis

Gatto¹,

Sicoli²,

Luisi³

2009

Journal of Phytopathology

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“…: Fr. In the case of the ring-lacking A. tabescens, identification was carried out on the basis of the morphological features of basidiomes, as described by Luisi et al (1996) (Table 1). five field isolates from several European countries were examined.…”

Section: Introductionmentioning

confidence: 99%

“…The origin of isolates and the means used for their identification are shown in Table 1. In the case of the ring-lacking A. tabescens, identification was carried out on the basis of the morphological features of basidiomes, as described by Luisi et al (1996) (Table 1). Isolates were grown in Petri plates containing 20 ml liquid medium (malt extract 0.6%, yeast extract 0.4%, peptone 0.4%, glucose 0.4% in distilled water) and incubated at 20°C in the dark for 3-4 weeks.…”

Section: Introductionmentioning

confidence: 99%

Development of species‐specific PCR primers on rDNA for the identification of European Armillaria species

Sicoli¹,

Fatehi

Stenlid

2003

Forest Pathology

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Attempts to design species-specific PCR primers from six European Armillaria species in the ribosomal RNA genes are reported. Primers were developed on the basis of the nucleotide sequence variability of the internal transcribed spacers (ITS) and the intergenic spacer (IGS1) of the ribosomal DNA. Four sets of primers gave specific PCR products for Armillaria tabescens, Armillaria mellea and Armillaria ostoyae. However, due to the high sequence similarities between Armillaria borealis and Armillaria ostoyae and between Armillaria cepistipes and Armillaria gallica no species specific amplification was obtained for these taxa.

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“…This would be consistent with the few cases reported from Southern Europe and North Africa. Moreover, C. fusipes is rarely isolated from declining oaks in southern Italy ( L UISI et al. 1996).…”

Section: Discussionmentioning

confidence: 99%

Hosts and distribution ofCollybia fusipesin France and factors related to the disease's severity

Piou¹,

Delatour²,

Marçais³

2002

Forest Pathology

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Using data collected by two different observation networks, it was possible to clarify the distribution of Collybia fusipes in France. It is frequently found in the western and northern parts of France, mainly on Quercus rubra and Quercus robur, and to a somewhat lesser extent on Quercus petraea. When the relative areas covered by these species are compared, it is evident that Q. rubra is much the most susceptible of the three species. The fungus has been less frequently reported in the south-eastern quarter of France, where Quercus ilex and Quercus pubescens are the dominant species. Complementary observations carried out at the National Arboretum of Les Barres indicate that a large number of oak species are susceptible to infection by this fungus, particularly those in the subgenus Erythrobalanus. These observations are discussed with reference to reports of this fungus throughout Europe. In a Q. rubra stand, fruit-body clumps were monitored and root damage was assessed on 73 ®nal-crop trees and 40 codominant trees. The results suggest that C. fusipes does not preferentially infect weakened trees. Both the severity of root damage and the number of fruit-body clumps increased with increasing depth to signs of waterlogging.

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Observations on Armillaria occurrence in declining oak woods of southern Italy

Cited by 20 publications

References 2 publications

Genetic Diversity within an Italian Population of Forest Armillaria gallica Isolates as Assessed by RAPD‐PCR Analysis

Genetic Diversity within an Italian Population of Forest Armillaria gallica Isolates as Assessed by RAPD‐PCR Analysis

Development of species‐specific PCR primers on rDNA for the identification of European Armillaria species

Hosts and distribution ofCollybia fusipesin France and factors related to the disease's severity

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