Scopus
🔓 Açık Erişim YÖKSİS Eşleşti
Protective role of quercetin and kaempferol against oxidative damage and photosynthesis inhibition in wheat chloroplasts under arsenic stress
Physiologia Plantarum · Temmuz 2023
YÖKSİS Kayıtları
Protective role of quercetin and kaempferol against oxidative damage and photosynthesis inhibition in wheat chloroplasts under arsenic stress
Physiologia Plantarum · 2023 SCI-Expanded
DOÇENT BÜŞRA ARIKAN ABDULVELİ →
Protective role of quercetin and kaempferol against oxidative damage and photosynthesis inhibition in wheat chloroplasts under arsenic stress
Physiologia Plantarum · 2023 SCI-Expanded
PROFESÖR EVREN YILDIZTUGAY →
Makale Bilgileri
DergiPhysiologia Plantarum
Yayın TarihiTemmuz 2023
Cilt / Sayfa175
Scopus ID2-s2.0-85165492008
Erişim🔓 Açık Erişim
Özet
Arsenic (As) toxicity negatively impacts plant development, limits agricultural production, and, by entering the food chain, endangers human health. Studies on the use of natural and bioactive molecules in increasing plants' resistance to abiotic stressors, such as As, have gained increasing attention in the last few years. Flavonols are plant secondary metabolites with high potential in stress tolerance due to their roles in signal transmission. Therefore, the focus of this study was to examine the effects of two flavonols, quercetin (Q, 25 μM) and kaempferol (K, 25 μM), on growth parameters, photosynthesis, and chloroplastic antioxidant activity in wheat leaves under As stress (100 μM). As stress reduced the relative growth rate by 50% and relative water content by 25% in leaves. However, applying Q and/or K alleviated the As-induced suppression of growth and water relations. Exogenous phenolic treatments reversed the effects of As toxicity in photochemistry and maintained the photochemical quantum efficiency of the Photosystem II (Fv/Fm). As exposure increased, the H2O2 content in wheat chloroplasts by 42% and high levels of H2O2 accumulation were also observed in guard cells in confocal microscopy images. Analysis of the chloroplastic antioxidant system has shown that Q and K applications increase the activity of antioxidant enzymes, including superoxide dismutase, peroxidase, and ascorbate peroxidase. Phenolic applications have induced the ascorbate–glutathione (AsA-GSH) cycle in charge of the protection of the cellular redox balance in different ways. It has been determined that Q triggers the AsA renewal, and K maintains the GSH pool. As a result, Q and K applications provide tolerance to wheat plants under As stress by increasing the chloroplastic antioxidant system activity and protecting photosynthetic reactions from oxidative damage. This study reveals the potential use of plant phenolic compounds in agricultural systems as a biosafe strategy to enhance plant stress tolerance, hence increasing yield.
Yazarlar (3)
1
Busra Arikan
ORCID: 0000-0001-5313-0501
2
Evren Yildiztugay
ORCID: 0000-0002-4675-2027
3
Ceyda Ozfidan-Konakci
ORCID: 0000-0002-7134-0948
Kurumlar
Necmettin Erbakan Üniversitesi
Meram Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
10
Atıf
3
Yazar