Hydrogen peroxide modulates activity and expression of antioxidant enzymes and protects photosynthetic activity from arsenic damage in rice (Oryza sativa L.)

Hydrogen peroxide potentiates defense system in presence of sulfur to protect chloroplast damage and photosynthesis of wheat under drought stress

“…However, the effectiveness of H 2 O 2 combined with S has not been reported earlier. (Sade et al, 2011;Fatma et al, 2016;Sehar et al, 2019;Rather et al, 2020aRather et al, , 2020bAsgher et al, 2021 (Khan et al, 2014;Sun et al, 2016;Shan et al, 2018;Li et al, 2020;Asgher et al, 2021). Xu et al (2011) also showed the involvement of the enzymes of the ascorbateglutathine cycle in protection of Kentucky bluegrass to drought damage.…”

“…Plants exposed to drought stress exhibit oxidative and osmotic stresses, which serve as a common response to adapt to these stress factors (Golldack et al ., 2014). To quench the excess of ROS generated in cells, plants exhibit various enzymatic and non‐enzymatic antioxidants, increased the accumulation of osmoprotectants and compatible solutes, which help the plants to obtain oxidative homeostasis (Porcel et al ., 2003; Khan et al ., 2013; Sekmen et al ., 2014; Fatma et al ., 2016; Pedranzani et al ., 2016; Sehar et al ., 2019; Hussain et al ., 2020; Rather et al ., 2020a, 2020b; Asgher et al ., 2021). In addition to the natural defense mechanisms employed by the plants, which help them to withstand exposure of stress, exogenous supplementation of several bio‐regulators and mineral nutrients are employed to improve drought stress tolerance.…”

“…Hydrogen peroxide (H 2 O 2 ) considered as a toxic ROS responsible for damaging numerous cellular structures is now gaining importance as a potential signaling molecule involved in numerous physiological functions (Petrov and Breusegem, 2012; Nazir et al ., 2020; Asgher et al ., 2021). Reports have shown that H 2 O 2 is a potential signaling molecule acting as a stress signal transducer that induces physiological functions for increasing photosynthetic and growth performance of plants under abiotic stress condition (Neill et al ., 2002; Hung et al ., 2005; Sun et al ., 2016; Asgher et al ., 2021).…”

“…Hydrogen peroxide (H 2 O 2 ) considered as a toxic ROS responsible for damaging numerous cellular structures is now gaining importance as a potential signaling molecule involved in numerous physiological functions (Petrov and Breusegem, 2012; Nazir et al ., 2020; Asgher et al ., 2021). Reports have shown that H 2 O 2 is a potential signaling molecule acting as a stress signal transducer that induces physiological functions for increasing photosynthetic and growth performance of plants under abiotic stress condition (Neill et al ., 2002; Hung et al ., 2005; Sun et al ., 2016; Asgher et al ., 2021). Supplementation of H 2 O 2 mitigates abiotic stress through various physiological manifestation such as upregulating the activity of antioxidant enzymes, defense protein, and transcription factors, all these forming an integral component of the intracellular signal transduction (Gechev and Hille, 2005; Slesak et al ., 2007; Sun et al ., 2016; Nazir et al ., 2020; Asgher et al ., 2021).…”

“…which help the plants to obtain oxidative homeostasis (Porcel et al, 2003;Khan et al, 2013;Sekmen et al, 2014;Fatma et al, 2016;Pedranzani et al, 2016;Sehar et al, 2019;Hussain et al, 2020;Rather et al, 2020aRather et al, , 2020bAsgher et al, 2021). In addition to the natural defense mechanisms employed by the plants, which help them to withstand exposure of stress, exogenous supplementation of several bio-regulators and mineral nutrients are employed to improve drought stress tolerance.…”