Morphological and histochemical changes in Seiridium spp. under water stress. (Contributo in atti di convegno)

Type
Label
  • Morphological and histochemical changes in Seiridium spp. under water stress. (Contributo in atti di convegno) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Turco E., Mori B., Raddi P., Panconesi A. (2008)
    Morphological and histochemical changes in Seiridium spp. under water stress.
    in 9th International Congress of Plant Pathology, Torino
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Turco E., Mori B., Raddi P., Panconesi A. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • Journal of Plant Pathology, 90(2, Supplement), S2.107-108. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • Reduced annual rainfall and increased mean temperature are two of the many consequences of the greenhouse effect. Organisms have to adapt to climate change, and plant pathogens and pests must similarly co-evolve to avoid any break in their life cycle. In the Mediterranean region, these climate changes are marked: long, dry summers and rainfall mostly occurring in winter favour the spread of desertification with consequent death of plants or increased susceptibility to disease. The high mortality of cypress (Cupressus spp.) observed in all the Mediterranean area is mostly due to Seiridium cardinale. This pathogen, and the other two related species (S. cupressi and S. unicorne) cause cypress canker with heavy damage in forests, nurseries and ornamental plantations. The ability of the fungus to survive for years on dead plant material as resting mycelium suggested a study on the morphological and histochemical changes induced by increasing water stress. Isolates of the three Seiridium species and of Sphaeropsis sapinea f.sp. cupressi (causing canker in north Africa but rarely observed in Italy) were cultured on media with osmotic potential ranging from 0 to -15 MPa. Histochemical changes, observed by light and fluorescence microscopy, revealed lipid accumulation and cell wall thickening under the highest osmotic stress. Disorganization of hyphae, granular cytoplasm and shorter distance between septa were also observed. ESEM analysis gave further information on the chemical composition of intracellular vacuoles. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto per la Protezione delle Piante, CNR, Firenze (literal)
Titolo
  • Morphological and histochemical changes in Seiridium spp. under water stress. (literal)
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