HISTO-ANATOMICAL CHANGES OF THE HORSE-CHESNUT’S LEAVES (AESCULUS HIPPOCASTANUM L.) UNDER THE INFLUENCE OF ATMOSPHERE POLLUTANTS

7th International Scientific Conference - SGEM2007, www.sgem.org, SGEM2007 Conference Proceedings/ ISBN: 954-918181-2, June 11-15, 2007

ABSTRACT

Our investigations have focused on observations concerning the horse-chesnut’s
(Aesculus hippocastanum L.) leaves in various phenophases, the state of the leaf
surfaces and histo-anatomical changes of the leaves under the influence of the
atmosphere pollutants (sulphur dioxide, chlorine, ammoniac, lime or cement
powders). The histo-anatomical changes induced by the gaseous and solid
atmosphere pollutants on the lamina have been observed in protecting tissues,
assimilator tissues (the palisade and the spongy tissue), vascular and mechanical
tissues. Some leaves presented disorders in all the component tissues, while in
others, the structure changes have only appeared in part of the lamina.

Keywords: Aesculus hippocastanum, atmosphere pollutants, morphological
and histo – anatomical changes.