Brassinosteroids alleviate chilling-induced oxidative damage by enhancing antioxidant defense system in suspension cultured cells of Chorispora bungeana
By Ya-jie Liu, Zhiguang Zhao, Jing Si, C. Di, Jin Han, L. An. Plant growth regulation (Print), 2009
134 citations recorded by the source corpus.
Brassinosteroids (BRs), a class of plant steroid hormones, play a significant role in the amelioration of various biotic and abiotic stresses. In order to further explore and elaborate their roles in plants subjected to chilling stress, suspension cultured cells of Chorispora bungeana with or without 24-epibrassinolide (EBR) application were exposed to 4 and 0°C for 5 days. The EBR treated cells exhibited higher viability after exposure to low temperatures compared with the control. Under chilling stress, reactive oxygen species (ROS) levels and lipid peroxidation were increased in the cultured cells, which were significantly inhibited by EBR application. The activities of antioxidative enzymes such as ascorbate peroxidase (APX), catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) were increased during chilling treatments, and these increases were more significant in the EBR applied suspension cells. The EBR treatment also greatly enhanced contents of ascorbic acid (AsA) and reduced glutathione (GSH) under chilling stress. From these results, it can be concluded that EBR could play the positive roles in the alleviation of oxidative damage caused by ROS overproduction through enhancing antioxidant defense system, resulting in improving the tolerance of C. bungeana suspension cultures to chilling stress.
Subfields: Plant Science
View Paper: https://www.semanticscholar.org/paper/97ce78ceeb2b3cb568fb06ab578b6faa43325778
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Citations in the corpus
- Brassinosteroids make plant life easier under abiotic stresses mainly by modulating major components of antioxidant defense system (2015, background): “…high (Mazorra et al., 2002, 2011; Zhou et al., 2004; Cao and Zhao, 2007; Ogweno et al., 2008; Hayat et al., 2010b) and low (Janeczko et al., 2007; Liu et al., 2009; Kumar et al., 2010; Aghdam et al., 2012; Wang et al., 2012; Hu et al., 2013; Xi et al., 2013; Aghdam and Mohammadkhani, 2014)…”