کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4427985 | 1309177 | 2006 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Ozone sensitivity of currant tomato (Lycopersicon pimpinellifolium), a potential bioindicator species Ozone sensitivity of currant tomato (Lycopersicon pimpinellifolium), a potential bioindicator species](/preview/png/4427985.png)
The 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.
Journal: Environmental Pollution - Volume 141, Issue 2, May 2006, Pages 275–282