Abstract
Results of ultrastructural studies and transmission electron microscope microanalysis of leaves of the bryophyte Rhytidiadelphus squarrosus collected from a park in Trondheim are presented. The lead content of these leaves primarily derives from motor traffic exhaust gases. A fine structural examination of the leaf cells revealed that detectable amounts of lead had entered the cytoplasm and could be recognized as electron-dense precipitates localized inside the plasma membrane, within vesicles or vacuoles, chloroplasts, mitochondria, microbodies and plasmodesmata. Control material, fixed only in glutaraledhyde and not post-stained, showed that these precipitates must be due to metallic elements having great electron-scattering properties. TEM-X-ray microanalysis indicated the definite presence of lead and phosphorus within both the nuclear and chloroplast inclusions. The possible presence of some other metals is also discussed.
Citation Formats
Ophus, E M, and Gullvag, B M.
Localization of lead within leaf cells of Rhytidiadelphus squarrosus (Hedw. ) Warnst. by means of transmission electron microscopy and X-ray microanalysis.
United Kingdom: N. p.,
1974.
Web.
Ophus, E M, & Gullvag, B M.
Localization of lead within leaf cells of Rhytidiadelphus squarrosus (Hedw. ) Warnst. by means of transmission electron microscopy and X-ray microanalysis.
United Kingdom.
Ophus, E M, and Gullvag, B M.
1974.
"Localization of lead within leaf cells of Rhytidiadelphus squarrosus (Hedw. ) Warnst. by means of transmission electron microscopy and X-ray microanalysis."
United Kingdom.
@misc{etde_5032233,
title = {Localization of lead within leaf cells of Rhytidiadelphus squarrosus (Hedw. ) Warnst. by means of transmission electron microscopy and X-ray microanalysis}
author = {Ophus, E M, and Gullvag, B M}
abstractNote = {Results of ultrastructural studies and transmission electron microscope microanalysis of leaves of the bryophyte Rhytidiadelphus squarrosus collected from a park in Trondheim are presented. The lead content of these leaves primarily derives from motor traffic exhaust gases. A fine structural examination of the leaf cells revealed that detectable amounts of lead had entered the cytoplasm and could be recognized as electron-dense precipitates localized inside the plasma membrane, within vesicles or vacuoles, chloroplasts, mitochondria, microbodies and plasmodesmata. Control material, fixed only in glutaraledhyde and not post-stained, showed that these precipitates must be due to metallic elements having great electron-scattering properties. TEM-X-ray microanalysis indicated the definite presence of lead and phosphorus within both the nuclear and chloroplast inclusions. The possible presence of some other metals is also discussed.}
journal = []
volume = {10:37/38}
journal type = {AC}
place = {United Kingdom}
year = {1974}
month = {Jan}
}
title = {Localization of lead within leaf cells of Rhytidiadelphus squarrosus (Hedw. ) Warnst. by means of transmission electron microscopy and X-ray microanalysis}
author = {Ophus, E M, and Gullvag, B M}
abstractNote = {Results of ultrastructural studies and transmission electron microscope microanalysis of leaves of the bryophyte Rhytidiadelphus squarrosus collected from a park in Trondheim are presented. The lead content of these leaves primarily derives from motor traffic exhaust gases. A fine structural examination of the leaf cells revealed that detectable amounts of lead had entered the cytoplasm and could be recognized as electron-dense precipitates localized inside the plasma membrane, within vesicles or vacuoles, chloroplasts, mitochondria, microbodies and plasmodesmata. Control material, fixed only in glutaraledhyde and not post-stained, showed that these precipitates must be due to metallic elements having great electron-scattering properties. TEM-X-ray microanalysis indicated the definite presence of lead and phosphorus within both the nuclear and chloroplast inclusions. The possible presence of some other metals is also discussed.}
journal = []
volume = {10:37/38}
journal type = {AC}
place = {United Kingdom}
year = {1974}
month = {Jan}
}