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231225s1998 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS.1998.82.6.711B
|2 doi
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|a eng
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|a Schwarczinger, I
|e verfasserin
|4 aut
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|a First Report of St. John's-Wort Anthracnose Caused by Colletotrichum gloeosporioides in Hungary
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|c 1998
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 20.11.2019
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a In 1997, we observed high incidence of severe disease symptoms in a plantation of St. John's-wort (Hypericum perforatum L.) that has been cultivated as a medicinal plant in Hungary. Symptoms were characterized by brown, 2- to 15-mm-diameter, sunken lesions that girdled the stems and, when occurring near the base, killed the plants. Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. in Penz. was consistently isolated from lesions. Acervuli containing conidia and dark setae emerged from the lesions. Perithecia of the teleomorph Glomerella cingulata (Stoneman) Spauld. & H. Schrenk also appeared on stems. Plants were inoculated with conidial suspension of the fungus (2 × 107/ml), then incubated in a moist chamber for 24 h, and subsequently transferred to the greenhouse. The first symptoms appeared on stems and leaves 7 days after inoculation. Chlorotic spots grew into circular and buff-colored lesions that coalesced and then desiccated. The fungus caused severe defoliation and plant death within 2 weeks. Koch's postulates was completed by consistently reisolating the pathogen from inoculated plants. This disease on St. John's-wort has not previously been reported in Hungary. However, an anthracnose disease caused by Glomerella cingulata (Stoneman) Spauld. & H. Schrenk var. migrans Wollenweber (Gloeosporium orbiculare Berk. & Mont.) was reported in Germany in 1949 (1). Reference: (1) H. W. Wollenweber and H. Hochapfel. Z. Parasitenkd. 14:181, 1949
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|a Journal Article
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|a Vajna, L
|e verfasserin
|4 aut
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|i Enthalten in
|t Plant disease
|d 1997
|g 82(1998), 6 vom: 28. Juni, Seite 711
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|x 0191-2917
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| 773 |
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|g volume:82
|g year:1998
|g number:6
|g day:28
|g month:06
|g pages:711
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|u http://dx.doi.org/10.1094/PDIS.1998.82.6.711B
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