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THE EFFECTS OF NICKEL ON THE MORPHOLOGICAL AND BIOCHEMICAL CHARACTERISTICS OF FERNS


OANA ALEXANDRA DRĂGHICEANU, CODRUĆąA MIHAELA DOBRESCU, MONICA POPESCU, LILIANA CRISTINA SOARE
University of PiteƟti, Faculty of Science, Department of Natural Science, Research Center for Nature Protection, e-mail: o_draghiceanu@yahoo.com; codrutza_dobrescu@yahoo.com; monica_26_10@yahoo.com; soleil_cri@yahoo.com

Issue:

SCSB, Number 1, Volume XXVIII

Section:

Volume 28, No. 1

Abstract:

The aim of this study was to evaluate the morphological and biochemical changes induced by nickel in the gametophye and sporophyte of Athyrium filix-femina (L.) Roth, Dryopteris filix-mas L. Schott and Dryopteris affinis (Lowe) Fraser-Jenk. The spores were uniformly distributed on the surface of sterilized soil with different Ni content: Control = 0 g Ni2+, V1 = 0.1 g Ni2+, V2 = 0.2 g Ni2+, V3 = 0.5 g Ni2+, and V4 = 1 g Ni2+. The variants were kept in the growing room and periodically watered with distilled water for 4 months. During this period we made observations on the development of gametophytes and sporophytes. After that we determined the content of photosynthetic pigments and total polyphenols. The effect of Ni on the content of pigments varied depending on species. In Dryopteris filix-mas there were no significant differences between the chlorophyll content from Control and V1, but for the other variants we observed a downward trend for both chlorophyll (a and b) and carotenoid content. Chlorophyll b is more sensitive to Ni than chlorophyll a in Dryopteris affinis and Athyrium filix-femina. In Athyrium filix-femina, the highest content of polyphenols was obtained in the first variant. Generally, the polyphenol content tended to increase in the variants with Ni compared to the Control, confirming their protective role against heavy metal stress.

Keywords:

nickel, ferns, chlorophyll, carotenoids, polyphenols.

Code [ID]:

SCSB201901V28S01A0010 [0005035]

Note:

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