The involvement of fungal pathogens in dieback-decline of Milicia excelsa saplings in plantations. (Articolo in rivista)

Type
Label
  • The involvement of fungal pathogens in dieback-decline of Milicia excelsa saplings in plantations. (Articolo in rivista) (literal)
Anno
  • 2001-01-01T00:00:00+01:00 (literal)
Alternative label
  • Apetorgbor M., Mancini F., Turco E., Cobbinah J.R., Ragazzi A. (2001)
    The involvement of fungal pathogens in dieback-decline of Milicia excelsa saplings in plantations.
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Apetorgbor M., Mancini F., Turco E., Cobbinah J.R., Ragazzi A. (literal)
Pagina inizio
  • 568 (literal)
Pagina fine
  • 577 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 108 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • - Univ Florence, Dipartimento Biotecnol Agr Patol Vegetale, I-50144 Florence, Italy - CNR, Ist. Protezione Piante - Sez. di Firenze, I-50019 Sesto Fiorentino, Italy (literal)
Titolo
  • The involvement of fungal pathogens in dieback-decline of Milicia excelsa saplings in plantations. (literal)
Abstract
  • This investigation examined dieback-declined shoots from Milicia excelsa plantations established at Abofour in the dry semi-deciduous forest, Amanthia in the moist semi-deciduous forest and Bonsa in the wet evergreen forest zones of Ghana. The symptoms developing during dieback-decline development were monitored. Opened galls turn progressively brown after Phytolyma spp. attack, becoming covered with aerial mycelium of varying appearance. Dieback progresses after 60 days from the point of gall eruption on the leaves. Another study was carried out to determine the fungi associated with the disease. Lasiodiplodia theobromae and Fusarium solani were frequently isolated from opened galls and dieback twigs at all the three sites while F. solani and F. oxysporum occurred on some Phytolyma spp. adults. Soil and air mycoflora of the three sites were scanned to trace the sources of the inoculum for dieback-decline. Qualitative spectrum of fungal population of these two systems did not differ much. There was abundance of L. theobromae in the soil samples while in the air Cladosporium herbarum occurred in the two seasons at all sites followed by L. theobromae, F. solani and Corynespora cassiicola. Isolations from seriously diseased seedling material showed the presence of L. theobromae and F. solani hyphae in the sub-epidermal and cortical parenchyma cells. These results suggest that L. theobromae and F. solani are likely pathogens associated with dieback-decline of Milicia excelsa seedlings. The role played by these fungi in dieback-decline development is yet to be ascertained. (literal)
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