EFFECTS OF MANGANESE ON THE MORPHOLOGY OF Lemna minor L. (Araceae)

Authors

Samarah Christina Cantanhede Ferreira Universidade Federal do Maranhão
Karine Sousa da Silva Universidade Federal do Maranhão
Priscya Etielle Silva Farias Universidade Federal do Maranhão
Arthur Baeta Coutinho Universidade Federal do Maranhão
Ilisandra Zanandrea Universidade Federal do Maranhão

DOI:

https://doi.org/10.18764/1981-6421e2023.7

Keywords:

Phytorremediation, Pollution, Aquatic macrophyte

Abstract

The present work aimed to compare the physiological responses of the species Lemna minor
L. to increased concentrations of the metal manganese (Mn) in nutrient solution, and whether these plants are capable of phytoremediating environments with high concentrations of this heavy metal. The plants were collected in artificial lakes, without apparent manganese contamination, located at Viveiro Tracoá in the region of São José de Ribamar - MA. The experiment was carried out in petri dishes, where 350 ml of Hoagland’s nutrient solution were added plus increasing doses of Mn (0; 0.2; 0.5 and 0.7mM)) in the form of MnCl2, with 1 ⁄ 4 of ionic strength. The experiment was conducted in a completely randomized design, with five replications, with the experimental unit consisting of 30 plants. Morphological characteristics of the species subjected to increasing concentrations of Mn were evaluated. Individuals from all treatments, except the control treatment, showed visual symptoms of toxicity, including chlorosis, wrinkling and curling of the leaf blade and necrosis. Despite this, there was no death of any L. minor plant, which suggests that it is a species that has the capacity to accumulate this element without major damage to the plants. Therefore, it is concluded that the L.minor species has the potential to be used in phytoremediation and
offers a new resource to explore and discover the mechanisms of Mn accumulation in plants,
in addition to helping to clean contaminated water.

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References

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Published

2024-02-21

How to Cite

(1)

Ferreira, S. C. C.; Silva, K. S. da; Farias, P. E. S.; Coutinho, A. B. .; Zanandrea, I. . EFFECTS OF MANGANESE ON THE MORPHOLOGY OF Lemna Minor L. (Araceae). Bol. Lab. Hidrobiol. 2024, 33.