AUTHORS: Valentin Jujea , Cristian Emilian Pop, Cosmin Alexandru Munteanu, Cătălin Dinu, Denis Dulubei , Adelina Dumitrescu, Anca Vârcolici, Dorin Lucian Hanganu , Nicolai Crăciun
Abstract: This study examines the influence of abiotic factors over Lemna minor, along with its
symbiotic organisms, in its growth rate under laboratory conditions. We explored the ability of
the plant to purify water taken from fish ponds under variable conditions (such as temperature,
symbiotic organisms, oxygen, nitrites, nitrates and ammonia). The viable specimens were
exposed to simulated conditions during 18 months and samples have been taken periodically.
An increased Malondialdehyde (MDA), catalase and polyphenol levels in L. minor
indicated reactive oxygen species (ROS) accumulation and that oxidative damage has occurred.
This is due to ROS growth potential to induce oxidative stress contributing to lipid peroxidation
and membrane damage, MDA level was considered as an indicator of the lesion.
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