Hydrogen peroxide is involved in strigolactone induced low temperature stress tolerance in rape seedlings (Brassica rapa L.)

Effect of an exogenous strigolactone GR24 on the antioxidant capacity and quality deterioration in postharvest sweet orange fruit stored at ambient temperature

“…For example, as reported by Zhang et al . (2020), the exogenous application of GR24 inhibited the production of H 2 O 2 and·O 2− and reduced the relative conductivity of rape seedlings under low temperatures. Bidabadi & Sharifi (2021) and Sedaghat et al .…”

“…In the salt‐treated sunflower, GR24 improved the enzymatic activity of SOD, CAT, and POD by 38.1%, 67.87%, and 124.01%, respectively (Zulfiqar et al ., 2020). In rape seedlings treated with GR24 induced at low‐temperature, the gene expression of antioxidant‐related enzymes was induced (Zhang et al ., 2020). In the strawberry fruit stored at 0 °C, 1 μmol L −1 GR24 significantly inhibited the increase in POD activity and the decrease in the activities of CAT and SOD, maintained the reduced ascorbic acid and GSH, and enhanced the ability to scavenge ROS (Huang et al ., 2021).…”

“…A trace amount of natural strigolactones are biosynthesised from carotenoids in plant roots in only trace amounts; therefore, artificial analogues like GR24 are generally used to imitate the molecular mechanism of natural strigolactones (Kramna et al ., 2019). Strigolactones have been found to play an essential role in various biological processes including seed germination (Omoarelojie et al ., 2020), hyphal branching of arbuscular mycorrhizal fungi, symbiotic interaction between the fungus and plant hosts (Banasiak et al ., 2020), root elongation (Sun et al ., 2021), adventitious root formation (Omoarelojie et al ., 2021) and rice tillering (Liu et al ., 2020), carbohydrate distribution (Zheng et al ., 2018), stress response (Yamada et al ., 2014; Zheng et al ., 2018; Lu et al ., 2019; Sedaghat et al ., 2020; Zhang et al ., 2020; Zulfiqar et al ., 2020; Bidabadi & Sharifi, 2021), and organ senescence. In Arabdopsis, perennial ryegrass, rice, and bamboo, GR24 has been shown to accelerate leaf senescence (Yamada et al ., 2014; Ueda & Kusaba, 2015; Tian et al ., 2018; Hu et al ., 2021).…”

Pretreatment with H2O2 Alleviates the Negative Impacts of NaCl Stress on Seed Germination of Tartary Buckwheat (Fagopyrum tataricum)

“…There were some reports on the use of H 2 O 2 to improve seed germination. For example, H 2 O 2 application at suitable concentrations alleviated the inhibition of pistachio seed germination under salt stress [ 21 ]; reduced the oxidative damage to rape seedlings under low-temperature conditions [ 9 ]; and enhanced the growth of wheat and the efficiency of its antioxidant defense systems under drought stress [ 22 ]. Due to differences in crop varieties and treatment methods, the optimal concentration at which exogenous H 2 O 2 should be applied to alleviate NaCl stress is also diverse.…”

“…When crops are under various types of stress, the application of exogenous H 2 O 2 can alleviate the stress and reduce crop damage. For example, pretreatment with exogenous H 2 O 2 can increase the active enzyme content of rice under drought stress [ 7 ], reduce salt-induced damage to wheat roots [ 8 ], and improve the cold resistance and cell viability of rape seedlings [ 9 ].…”