Scopus
YÖKSİS Eşleşti
Hormetic activation of nano-sized rare earth element terbium on growth, PSII photochemistry, antioxidant status and phytohormone regulation in Lemna minor
Plant Physiology and Biochemistry · Ocak 2023
YÖKSİS Kayıtları
Hormetic activation of nano-sized rare earth element terbium on growth, PSII photochemistry, antioxidant status and phytohormone regulation in Lemna minor
Plant Physiology and Biochemistry · 2023 SCI-Expanded
DOÇENT BÜŞRA ARIKAN ABDULVELİ →
Hormetic activation of nano-sized rare earth element terbium on growth, PSII photochemistry, antioxidant status and phytohormone regulation in Lemna minor
Plant Physiology and Biochemistry · 2023 SCI-Expanded
ARAŞTIRMA GÖREVLİSİ FATMA NUR ALP TURGUT →
Hormetic activation of nano-sized rare earth element terbium on growth, PSII photochemistry, antioxidant status and phytohormone regulation in Lemna minor
Plant Physiology and Biochemistry · 2023 SCI-Expanded
PROFESÖR EVREN YILDIZTUGAY →
Hormetic activation of nano-sized rare earth element terbium on growth, PSII photochemistry, antioxidant status and phytohormone regulation in Lemna minor
Plant Physiology and Biochemistry · 2023 SCI-Expanded
PROFESÖR HALİT ÇAVUŞOĞLU →
Hormetic activation of nano-sized rare earth element terbium on growth, PSII photochemistry, antioxidant status and phytohormone regulation in Lemna minor
Plant Physiology and Biochemistry · 2023 SCI-Expanded
PROFESÖR EVREN YILDIZTUGAY →
Makale Bilgileri
DergiPlant Physiology and Biochemistry
Yayın TarihiOcak 2023
Cilt / Sayfa194 · 361-373
Scopus ID2-s2.0-85143355513
Özet
Soils contaminated with rare earth elements (REEs) can damage agriculture by causing physiological disorders in plants which are evaluated as the main connection of the human food chain. A biphasic dose response with excitatory responses to low concentrations and inhibitory/harmful responses to high concentrations has been defined as hormesis. However, not much is clear about the ecological effects and potential risks of REEs to plants. For this purpose, here we showed the impacts of different concentrations of nano terbium (Tb) applications (5-10-25-50-100-250-500 mg L−1) on the accumulation of endogeneous certain ions and hormones, chlorophyll fluoresence, photochemical reaction capacity and antioxidant activity in duckweed (Lemna minor). Tb concentrations less than 100 mg L−1 increased the contents of nitrogen (N), phosphate (P), potassium (K+), calcium (Ca2+), magnesium (Mg2+), manganese (Mn2+) and iron (Fe2+). Chlorophyll fluorescence (Fv/Fm and Fv/Fo) was suppressed under 250–500 mg L−1 Tb. In addition, Tb toxicity affected the trapped energy adversely by the active reaction center of photosystem II (PSII) and led to accumulation of inactive reaction centers, thus lowering the detected level of electron transport from photosystem II (PSII) to photosystem I (PSI). On the other hand, 5–100 mg L−1 Tb enhanced the activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POX), NADPH oxidase (NOX), ascorbate peroxidase (APX), glutathione reductase (GR), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and glutathione S-transferase (GST). Tb (5–50 mg L−1) supported the maintenance of cellular redox status by promoting antioxidant pathways involved in the ascorbate-glutathione (AsA-GSH) cycle. In addition to the antioxidant system, the contents of some hormones such as indole-3-acetic acid (IAA), gibberellic acid (GA), cytokinin (CK) and salicylic acid (SA) were also induced in the presence of 5–100 mg L−1 Tb. In addition, the levels of hydrogen peroxide (H2O2) and lipid peroxidation (TBARS) were controlled through ascorbate (AsA) regeneration and effective hormonal modulation in L. minor. However, this induction in the antioxidant system and phytohormone contents could not be resumed after applications higher than 250 mg L−1 Tb. TBARS and H2O2, which indicate the level of lipid peroxidation, increased. The results in this study showed that Tb at appropriate concentrations has great potential to confer tolerance of duckweed by supporting the antioxidant system, protecting the biochemical reactions of photosystems and improving hormonal regulation.
Yazarlar (7)
1
Fatma Nur Alp-Turgut
ORCID: 0000-0002-1884-2367
2
Busra Arikan
ORCID: 0000-0001-5313-0501
3
Ceyda Ozfidan-Konakci
ORCID: 0000-0002-7134-0948
4
Cagri Gulenturk
ORCID: 0000-0001-7405-7374
5
Evren Yildiztugay
ORCID: 0000-0002-4675-2027
6
Metin Turan
ORCID: 0000-0002-4849-7680
7
Halit Cavusoglu
ORCID: 0000-0002-7215-651X
Anahtar Kelimeler
Antioxidant
Chlorophyll fluorescence
Hormetic effect
Lemna minor
Nano-size terbium
Kurumlar
Necmettin Erbakan Üniversitesi
Meram Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Yeditepe University
Istanbul Turkey
Metrikler
8
Atıf
7
Yazar
5
Anahtar Kelime