Ethylene production is associated with alleviation of cadmium-induced oxidative stress by sulfur in mustard types differing in ethylene sensitivity

Calcium application enhances growth and alleviates the damaging effects induced by Cd stress in sesame (Sesamum indicumL.)

“…This stress-ameliorating role of calcium can be ascribed to the enhancement of antioxidant activities, which was shown to reduce lipid peroxidation in calcium-treated plants. In addition, increased GR activity in calcium-treated plants could contribute to maintaining the redox buffer and coordinating electron transport during photosynthetic processes (Asgher et al 2014). This increased antioxidant metabolism supports the role of calcium in mitigation of cadmium stress in S. indicum, which can contribute significantly to the protection of membrane lipids.…”

“…S. indicum exposed to cadmium stress exhibited enhancements in the antioxidant enzyme activities analyzed, and calcium application caused a further increase in their activities, which suggested a protective role of calcium in mitigating oxidative stress. Such an enhancement in the activity of antioxidant enzymes in response to cadmium stress has been reported in T. aestivum (Milone et al 2003); B. juncea (Asgher et al 2014) and C. italica ). Maximal increases in activity were observed in plants treated with cadmium and calcium (Figure 3(A-E)).…”

“…In our experiments, calcium addition helped plants resist stress and stimulated plant growth and development. Such positive effects of calcium can be due to its impact on mineral uptake, which results in improved antioxidant defense systems (Siddiqui et al 2012;Asgher et al 2014;Ahmad et al 2015;Iqbal et al 2015). This stress-ameliorating role of calcium can be ascribed to the enhancement of antioxidant activities, which was shown to reduce lipid peroxidation in calcium-treated plants.…”

“…Its uptake by plants is rather quick because of its high mobility, which is, in turn, responsible for its rapid transportation to above-ground plant parts (Asgher et al 2014). The uptake and subsequent accumulation of Cd in plant tissues result in the production of excess reactive oxygen species (ROS), which can obstruct the absorption of essential elements such as zinc, calcium and iron from proteins and inhibit the chloroplast and mitochondrial electron transport chain (Gallego et al 2012).…”

Response of broccoli to sulphur application at topdressing in the presence or absence of organic compost at planting

“…For the control treatment (zero dose), it was obtained an increase in more than 50% for the head fresh matter, i.e., 158.5g plant -1 (without organic compost) and 247.0 g plant -1 (with organic compost). This result demonstrates the importance of applying sulphur to plant growth and development of plants (Khan et al, 2015;Asgher et al, 2014). Schonhof et al (2007) observed an increase in the broccoli head matter by applying adequate rates of sulphur.…”