Effect of Rhododendron arboreum Leaf Extract on the Antioxidant Defense System against Chromium (VI) Stress in Vigna radiata Plants

Abstract

In the current investigation, we studied role of Rhododendron leaf extract in Vigna radiata grown under chromium metal stress. We observed that seed treatment with Rhododendron leaf extract resulted in the recuperation of seedling growth under chromium toxicity. Seed treatment with Rhododendron leaf extract significantly improved the contents of anthocyanin and xanthophyll pigments under stress. The antioxidative defense system triggered after Rhododendron extract treatment, resulting in the increased actions of antioxidant enzymes. Oxidative stress induced by the assembly of reactive oxygen species was reduced after Rhododendron extract treatment under chromium toxicity as indicated by the enhanced contents of non-enzymatic antioxidants, namely ascorbic acid, tocopherol, and glutathione. Furthermore, Rhododendron leaf extract treatment under chromium metal stress also encouraged the biosynthesis of organic acids, polyphenols, as well as amino acids in Vigna radiata. Statistical analysis of the data with multiple linear regression also supported that Rhododendron leaf extract can effectively ease chromium metal-induced phytotoxicity in Vigna radiata.

Effect of chromium (VI) toxicity on morpho-physiological characteristics, yield, and yield components of two chickpea (Cicer arietinum L.) varieties

“…Aestivum [ 18 ]. Similar results have been observed in various plants subjected to Cr toxicity [ 11 , 20 , 67 , 68 ].…”

“…Previous studies have shown that APX activity decreased with increased metal toxicity in Brassica juncea (L.) [65], B. napus [66], and T. Aestivum [18]. Similar results have been observed in various plants subjected to Cr toxicity [11,20,67,68].…”

Multiple Biological Activities of Rhododendron przewalskii Maxim. Extracts and UPLC-ESI-Q-TOF/MS Characterization of Their Phytochemical Composition

“…Reports also showed that some plants in the Rhododendron genus presented anti-inflammatory and antioxidant activities, such as R. tomentosum ssp . subarcticum ( Black et al, 2011a , b ) , R. arboreum ( Gautam et al, 2020 ) and R. ponticum ( Erdemoglu et al, 2008 ). In this paper, the anti-inflammatory activity of R. przewalskii extracts in vitro was evaluated for the first time.…”

Traditional uses, Pharmacology and Phytochemistry of National flower of Nepal Rhododendron arboreum: A Review

“…14 Oxidative stress markers such as SOD, CAT and MDA were measured in tissue and also measured the concentration of inflammatory markers like interleukin-6 (IL-6) interleukin-1beta (IL-1β) and tumor necrosis factor-alpha (TNF-α) as well as VEGF, a specific sepsis marker. The test drug given group were significantly restored all the markers of liver and renal functions, antioxidant markers and also normalized plasma pro-inflammatory cytokines, thus preventing the multi-organ and tissue damage in LPS induced rats [15][16] .…”