Foliar response of an Ailanthus altissima clone in two sites with different levels of ozone-pollution

Giacomo Alessandro Gerosa, Elisabetta Gravano, Rosanna Desotgiu, Filippo Bussotti, Valentina Giulietti, Paolo Grossoni, Corrado Tani

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

62 Citazioni (Scopus)

Abstract

at the first onset of symptoms at SET (the CAS leaflets were asymptomatic). Observing the upper leaf surface where the brown stipples were visible, it was found that the cells of the palisade mesophyll displayed loss of chlorophyll and the organelles in the cytoplasm were damaged. Swelling of thylacoids was observed in the CAS leaflets, thus indicating the possible onset of a pre-visual damage. The injured cells were separated from the healthy ones by a layer of callose. We conclude that the sensitivity to ozone of A. altissima leaves is related to its leaf structure, with low leaf density and large intercellular spaces. Cell walls, as well as acting as mechanical barriers against the spread of ozone within the cell, also provide important detoxifying processes
Lingua originaleEnglish
pagine (da-a)137-146
Numero di pagine10
RivistaEnvironmental Pollution
Volume121
DOI
Stato di pubblicazionePubblicato - 2003

Keywords

  • Leaf structure
  • bioindicators
  • callose
  • histochemistry
  • pre-visual damage
  • ultrastructure
  • visual symptoms

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