Scopus
YÖKSİS Eşleşti
The regulatory effects of biochar on PSII photochemistry, antioxidant system and nitrogen assimilation in Lemna minor exposed to inorganic pollutants, arsenic and fluoride
Journal of Environmental Chemical Engineering · Ekim 2023
YÖKSİS Kayıtları
The regulatory effects of biochar on PSII photochemistry, antioxidant system and nitrogen assimilation in Lemna minor exposed to inorganic pollutants, arsenic and fluoride
Journal of Environmental Chemical Engineering · 2023 SCI-Expanded
ARAŞTIRMA GÖREVLİSİ FATMA NUR ALP TURGUT →
The regulatory effects of biochar on PSII photochemistry, antioxidant system and nitrogen assimilation in Lemna minor exposed to inorganic pollutants, arsenic and fluoride
Journal of Environmental Chemical Engineering · 2023 SCI-Expanded
PROFESÖR EVREN YILDIZTUGAY →
The regulatory effects of biochar on PSII photochemistry, antioxidant system and nitrogen assimilation in Lemna minor exposed to inorganic pollutants, arsenic and fluoride
Journal of Environmental Chemical Engineering · 2023 SCI-Expanded
DOÇENT BÜŞRA ARIKAN ABDULVELİ →
Makale Bilgileri
DergiJournal of Environmental Chemical Engineering
Yayın TarihiEkim 2023
Cilt / Sayfa11
Scopus ID2-s2.0-85169805992
Özet
The excessive accumulation of inorganic pollutants such as arsenic (As) and fluoride (F) are destructive contaminants for plants. There are some reports about the toxicity mechanisms of individual exposure of As or F. Biochar (BC), carbon-rich organic material, can sequester pollutants and help in increasing growth, nutrient uptake and water holding capacity in soils. However, the defense responses of plants to a combination of two stresses and the interactions between BC and combined exposure of As and F are not explicit. In order to fill this gap, different BC concentrations (BC1; 1 g L−1 and BC2; 5 g L−1) were hydroponically applied to Lemna minor subjected to sodium fluoride (F, 15 mM NaF) and sodium arsenate (As, 100 μM Na2HAsO4). As or F pollutants caused a reduction in the chlorophyll fluorescence (Fv/Fm and Fv/Fo) but BC application under stress conditions improved the fluorescence levels. The photochemical reactions of photosystems and fluorescence kinetics impaired by stress were re-regulated through all BC concentrations. The relative expressions of genes belonging to proteins in PSI-PSII (psaA, psaB, psbA and psbD) were up-regulated in both BCs and As/F treatments. As-treated L. minor had only induction in superoxide dismutase-SOD- and ascorbate peroxidase-APX-, the enhancement in SOD, catalase-CAT-, glutathione reductase-GR- and glutathione S-transferase-GST- was observed under F toxicity. Also, the joint stress (As+F) caused declines in all antioxidant capacities except with SOD activity. Due to the sufficient antioxidant activation, hydrogen peroxide (H2O2) and thiobarbituric acid reactive substances (TBARS) increased in L. minor. While, 1 mg L-1 BC induced the regeneration of ascorbate (AsA) under individual application of As or F, 5 mg L-1 BC increased APX, MDHAR, DHAR, total ascorbate (tAsA), and DHA against F stress. As- and NaF-mediated stress suppressed the nitrogen assimilation of L. minor. Interestingly, the induced accumulation of NH4+ was prevented in BC plus stress-applied plants through glutamate dehydrogenase (GDH) activity rather than glutamine synthetase-glutamate synthase (GS-GOGAT) pathways. All findings indicated that BCs reduced lipid peroxidation and ROS accumulation by modulating electron fluxes and photochemistry in PSI and PSII, gene expression, nitrogen metabolism as well as the antioxidant system under stress conditions (As, F, and As+F).
Yazarlar (5)
1
Evren Yildiztugay
ORCID: 0000-0002-4675-2027
2
Ceyda Ozfidan-Konakci
ORCID: 0000-0002-7134-0948
3
Busra Arikan
ORCID: 0000-0001-5313-0501
4
Fatma Nur Alp-Turgut
ORCID: 0000-0002-1884-2367
5
Cagri Gulenturk
ORCID: 0000-0001-7405-7374
Anahtar Kelimeler
Arsenic
Biochar
Fluoride
Nitrogen metabolism
PSII photochemistry
Kurumlar
Necmettin Erbakan Üniversitesi
Meram Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
2
Atıf
5
Yazar
5
Anahtar Kelime