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EnglishThe wild tomato species Lycopersicon pimpinellifolium (currant tomato) was exposed to different O3 concentration, both in controlled environment fumigation facilities and in open-top chambers, to assess its sensitivity and to verify its potential as a bioindicator plant. Plants appeared particularly sensitive to O3 at an early stage of growth, responding with typical chlorotic spots within 24 h after exposure to a single pulse of 50 ppb for 3 h, and differentiating peculiar symptoms, such as reddish necrotic stipples, bronzing and extensive necrosis, depending on O3 concentration. Histo-cytochemical investigations with 3,3#-diaminobenzidine, to localize H2O2, and Evans blue, to detect dead cells, suggested that currant tomato sensitivity to O3 could be due to a deficiency in the anti-oxidant pools. The combination of these stainings proved to be useful, either to predict visible symptoms, early before their appearance, and to validate leaf ozone injury.
| Autori interni: | ||
| Autori: | IRITI M.; BELLI L.; NALI C.; LORENZINI G; GEROSA G.; FAORO F. | |
| Titolo: | Ozone sensitivity of currant tomato (Lycopersicon pimpinellifolium), a potential bioindicator species | |
| Anno del prodotto: | 2006 | |
| Digital Object Identifier (DOI): | 10.1016/j.envpol.2005.08.046 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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