Ozone-induced changes in the chloroplast structure of conifer needles, and their use in ozone diagnostics.
Environ Pollut
; 137(3): 466-75, 2005 Oct.
Article
em En
| MEDLINE
| ID: mdl-16005759
ABSTRACT
Ozone induces characteristic symptoms in the chloroplasts of the needles of several coniferous species. Chloroplasts are (1) reduced in size and (2) the stroma is electron dense. Moreover, (3) these chloroplast alterations are more pronounced in the outer mesophyll cell layers and in the upper side of the needle compared to the inner layers and lower side. The syndrome, including the three symptoms (1)-(3), is found in the green needles of Scots pine and Norway spruce not only in the experimental fumigations, but also in mature trees in the field, and has potential for diagnosis of ozone stress. For sound ozone diagnostics all three symptoms must be present in the samples studied. The symptoms in relation to needle anatomy and physiology is discussed, and recommendations for sampling and analysis are given.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ozônio
/
Cloroplastos
/
Monitoramento Ambiental
/
Poluentes Atmosféricos
/
Traqueófitas
/
Aclimatação
Tipo de estudo:
Diagnostic_studies
/
Guideline
País/Região como assunto:
Europa
Idioma:
En
Revista:
Environ Pollut
Assunto da revista:
SAUDE AMBIENTAL
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Finlândia