The Reduction of Selenium(IV) by Boreal Pseudomonas sp. Strain T5-6-I – Effects on Selenium(IV) Uptake in Brassica oleracea

August 2019 in “ Environmental research ”

Merja Lusa, Hanna Help, A. Honkanen, Jenna Janina Knuutinen, Joni Parkkonen, Dominika Kalasová, Malin Bomberg

selenium Pseudomonas sp. Brassica oleracea selenium uptake root hair density oxidative stress selenium metabolism XANES analysis organic C-Se-H bonds C-Se-C bonds phytoremediation biofortification cabbage root hair stress response selenium bonds plant enhancement

TLDR Pseudomonas sp. T5-6-I bacteria increase selenium uptake in Brassica oleracea plants by 130%.

The study investigated the impact of the Se(IV)-reducing Pseudomonas sp. T5-6-I strain on selenium uptake in Brassica oleracea. Results showed that plants grown with Pseudomonas sp. had 130% more selenium translocation compared to those without the bacteria. Additionally, the bacteria increased root hair density and induced changes in protein expression related to oxidative stress and selenium metabolism. XANES analysis revealed selenium accumulated mainly in organic C-Se-H and C-Se-C bonds. The findings suggested that Pseudomonas sp. T5-6-I could enhance selenium accumulation in plants, highlighting its potential for phytoremediation and biofortification.

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