DBPapers

SOME ASPECTS CONCERNING THE REPLY REACTIONS OF SOME GYMNOSPERMS TO THE ACTION OF SOLID INDUSTRIAL POLLUTANTS

AUTHOR/S: IVANESCU, L., ZAMFIRACHE, M.
Sunday 1 August 2010 by Libadmin2005

5th International Scientific Conference - SGEM2005, www.sgem.org, SGEM2005 Conference Proceedings/ ISBN: 954-918181-2, June 13-17, 2005, 405- 412pp

ABSTRACT

The investigations made by us about the micromorphology of the foliar surfaces of two
species of gymnosperms in the industrial areas Bicaz and Taşca (the Neamţ District,
Romania). The investigations of electronic microscopy (S.E.M.) made up at the level of
necrotic and/or chlorosis surfaces (top, middle, basis) of the acicular leaves of Pinus
sylvestris and Pinus nigra showed changes of the cuticular surface, their contortion, caused
by the total disappearance of the parallelism between the cuticular prints, the chaotic setting
of the stomata and their less dimensions, the presence of cuticular clefts, the closing of the
ostiols with amorphous wax, which could be an indicator of the “suffering” of the leaf
mesophyll in general. The analysis of the foliar surfaces by means of the S.E.M. revealed the
role of the solid deposits of industrial origin in the phenomenon of partly defoliation or total
one of the individuals, oftenly during the full season of vegetation.