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Open Access Green as soon as Postprint is submitted to ZB.
Cytological Observations on Spruce Needles after Prolonged Treatment with Ozone and Acid Mist.
Environ. Pollut. 64, 323-335 (1990)
Light and electron microscopic studies of four clones of 5-year-old Picea abies tress subjected to ozone and acid mist treatment showed, that:
1.
(1) Clones respond differently to the treatment, with clone 14 the most sensitive clone.
2.
(2) Main effects were observed in the mesophyll; the vascular strand showed minor cellular changes.
3.
(3) Needle shape and ratio of intercellular area to cross section was clone- age-dependent, with a clear increase in intercellular space associated with the treatment (clone 14 and 11 only).
4.
(4) Accumulation of tannins in vacuoles was clone-specific.
5.
(5) Strong starch formation was found in all samples; in clones 14 and 133 this formation was enhanced by the treatment in older needles, if number of starch grains per cell was calculated.
6.
(6) The accumulation of plastoglobules in plastids depended on clone and age, with the older needles containing more globules. In clones 11 and 133, the treatment led to an increase in the number of plastoglobules.
7.
(7) Grana stacking in all clones and both needle ages subjected to ozone and acid mist was significantly reduced.
The observed changes in the ultrastructure of needle tissue are comparable to those found in field investigations with similar conditions, or phytotron studies evaluating pollution effects on spruce trees.
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Publication type
Article: Journal article
Document type
Scientific Article
ISSN (print) / ISBN
0269-7491
e-ISSN
1873-6424
Journal
Environmental Pollution
Quellenangaben
Volume: 64,
Issue: 3-4,
Pages: 323-335
Publisher
Elsevier
Reviewing status
Peer reviewed
Institute(s)
Institute of Biochemical Plant Pathology (BIOP)