Differential activity and expression of antioxidant enzymes and alteration in osmolyte accumulation under high temperature stress in wheat seedlings

Proteomic analysis of changes in mitochondrial protein expression during peach fruit ripening and senescence

“…Since enzyme activity is influenced by numerous factors involved in both internal and environmental stimulation. The inconsistency between enzyme activity and protein expression level of CAT in this study may be due to protein translation and modification, enzyme activation or inactivation as observed in [52].…”

Compensatory growth in Microcystis aeruginosa after moderate high-temperature exposure

“…In this study, we found that the activity of SOD, CAT, and POD rose remarkably with moderate high-temperature stress, with the activities increasing with stress time. Wang et al (2014) also found that the SOD of wheat increased after high-temperature stress. Heat stress may induce expressive alterations in oxidative metabolism, which activates gene expression and increases antioxidative enzyme activities (Mittler et al, 2004).…”

“…Laxman et al (2014) demonstrated that greater activity of superoxide dismutase (SOD) resulted in higher membrane stability under mild high-temperature stress. Wang et al (2014) found that SOD and catalase (CAT) were all up-regulated under high temperature. Tikhomirova (1985) found that seed hardening at high temperature resulted in plants tolerant to overheating as well as higher levels of water-soluble proteins.…”

Metabolic pathways analysis and identification of heat response genes of pineapple [Ananas comosus (L.) Merr.] fruit affected by elevated postharvest temperature

“…HSFs depend on the expression of antioxidant genes in Arabidopsis (Panchuk et al, 2002) and might take part in HSP biosynthesis and regulation of oxidative stress through antioxidant gene expression (Wang et al, 2014). Heat pretreatment at 38 o C for 10 h induced the expression of Hsp70 genes of grape berries, and subsequently enhanced the enzyme activities of CAT, SOD and POD, while after exposure to cold stress for 72 h, the expression levels of Hsp70 were remarkably depressed, and the enzyme activities of CAT and POD were significantly reduced (Zhang et al, 2005).…”

“…Transcription factors, which play a key role in the regulation of gene expression under abiotic and biotic stresses in plants, are also affected by high temperature . To maintain redox homeostasis under high temperature stress, plant cells must elevate their capacity to trigger the gene expression and enhance the activity of antioxidant enzymes, including superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and glutathione reductase (GR) (Wang et al, 2014). However, little information is available regarding whether there is a cross-talk among the (s)HSPs, transcription factor genes and antioxidant enzyme genes and how the cross-talk occurs during the EPT process.…”