<i>Eutypa armeniacae</i>in apricot: Pathogenesis and induction of xylem soft rot

English, H.; Davis, James R.

doi:10.3733/hilg.v46n06p193

Cited by 22 publications

(8 citation statements)

References 15 publications

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“…Our pathogenicity results on apricot with isolates ex pistachio are in many aspects in agreement with those from similar experiments carried out on apricot with isolates ex apricot (ENGLISH and DAVIS 1978), almond (RUMBOS 1985) or other hosts (BoLAY andCARTER 1985, RUMBOS 1985 a).…”

supporting

confidence: 90%

“…Cytosporina sp.) is a vascular pathogen which causes 'gummosis' or 'dieback' disease of apricot (Prunus armeniacae L.) in most apricot producing regions of the world (CARTER 1957, CARTER and BOLAY 1972, CARTER et al 1964, ENGLISH et al 1963, MATTHEE et al 1973. The pathogen invades pruning wounds and progressively destroys the vascular tissue, usually resulting in the death of the affected branches.…”

mentioning

confidence: 99%

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Isolation and Identification of Eutypa lata from Pistacia vera in Greece

Rumbos¹

1986

Journal of Phytopathology

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The fungus Eutypa lata (syn. E. armeniacae), known as the causal agent of the death of many different woody plants, was found on dead branches of pistachio (Pistacia vera L.) in Greece. Isolations from diseased branches yielded consistently typical colonies of the asexual stage of the fungus (Libertella blepharis, syn. Cytosporina sp.), which proved to be undistinguishable from other cultures of the pathogen obtained from 15 different hosts. Furthermore, all isolates from pistachio tested for pathogenicity on apricot were pathogenic and yielded characteristic cankers.

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supporting

confidence: 90%

mentioning

confidence: 99%

Isolation and Identification of Eutypa lata from Pistacia vera in Greece

Rumbos¹

1986

Journal of Phytopathology

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“…Eutypa lata is also able to kill bark and cambium with development of cankers. As a consequence, the infected branches easily break and the entire plant can die after a progressive dieback (English and Davis, 1978; Carter, 1991). Eutypa lata was reported also on dead wood of Platanus sp., inside the host lists of this pathogen, but without any other information (Carter et al., 1983; Carter, 1991).…”

Section: Introductionmentioning

confidence: 99%

Molecular Identification of Fomitiporia mediterranea and Eutypa lata/Libertella blepharis in Platanus × acerifolia

Pilotti¹,

Gervasi²,

Brunetti³

2005

Journal of Phytopathology

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The studies of woody organs-affecting diseases of Platanus · acerifolia can be hampered by the finding of fungi whose identification is difficult with mycological techniques. In a previous study on Platanus · acerifolia affected by severe cankers, Fomitiporia mediterranea/ punctata-like fungi, not associated with fruit bodies and Libertella sp. were recovered. Due to the severity of the associated symptoms, a characterization of fungal ribosomal DNA genes was undertaken in the present study, aimed to specific identification of the pathogens. From DNA of Fomitiporia-vegetative isolates and Fomitiporia-fruit body isolates, included in the study for comparison (from fruit body on plane trees typical of F. mediterranea/punctata), and Libertella sp., DNA fragments were amplified in polymerase chain reaction (PCR) with the use of ITS5/ITS4 and 5.8S-R/LR7 primer pairs. Sequence alignments showed that Fomitiporia-vegetative/fruit body isolates had highly homologous ITS5/ITS4 sequences, with a nucleotide identity of 98-100%. All the Fomitiporia isolates from plane tree showed 97-100% and 91-94% of nucleotide identity respectively with ITS5/ITS4 sequences of known strains of F. mediterranea and F. punctata, extracted from GenBank. The strong similarity of these identity ranges with those obtained within F. mediterranea (98-100%) and between the two Fomitiporia species (90-94%) confirms the identification of the isolates from plane tree as F. mediterranea. Sequence comparison between Libertella sp. from plane tree and known strains of Eutypa lata/L. blepharis showed 94-99% of nucleotide identity. The comparison with eight additional species of Eutypa showed 90-93% of nucleotide identity. As previously reported for the different taxa within Diatrypaceae, also ITS5/ITS4 sequence of Libertella sp. from plane tree exhibited 11-bp tandem repeats motifs. Results of sequence alignments, of phylogenetic trees, and of the putative restriction map, identify the Fomitiporia isolates of this work as F. mediterranea, and the isolates of Libertella sp. as E. lata/L. blepharis. For comparative purposes, ITS5/ITS4 sequences of Spongipellis pachyodon and Fomes fomentarius from plane tree, were also obtained in this work.www.blackwell-synergy.com

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“…In California, English and Davis (1978) were unable to induce pathogenesis in two pear cultivars by inoculation with isolates highly virulent to apricot, and we know of no other studies of the pathogen in this host. The evidence to date suggests then, that pathogenesis in the pear is a slow process proceeding at a rate akin to that in the grapevine and attributable only to specific pathotypes occurring in a few regions.…”

Section: Discussionmentioning

confidence: 99%

Variation in the Pathogenicity of Eutypa lata (= E. armeniacae)

Carter¹,

Bolay²,

English³

et al. 1985

Aust. J. Bot.

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Evidence is advanced for the existence of pathotypes in Eutypa lata. Two groups of pathotypes, respectively of high and low virulence to apricot, were identified on the basis of the uniform patterns of response obtained following the inoculation of single ascospore isolates to four cultivars of apricot in widely separated geographical regions.These pathotypes exhibited similar patterns of virulence to almond, in which there was some evidence for differences in the susceptibility of cultivars.Of the six isolates inoculated to pear, only one was pathogenic. The grapevine is believed to be a universal host, susceptible to a wide range of pathotypes of which only a few are capable of pathogenesis in hosts in which the pathogen is found infrequently.

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Eutypa armeniacaein apricot: Pathogenesis and induction of xylem soft rot

Cited by 22 publications

References 15 publications

Isolation and Identification of Eutypa lata from Pistacia vera in Greece

Isolation and Identification of Eutypa lata from Pistacia vera in Greece

Molecular Identification of Fomitiporia mediterranea and Eutypa lata/Libertella blepharis in Platanus × acerifolia

Variation in the Pathogenicity of Eutypa lata (= E. armeniacae)

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