Protective Role of Ca Against NaCl Toxicity in Jerusalem Artichoke by Up-Regulation of Antioxidant Enzymes*1
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2020, Ecotoxicology and Environmental SafetyCitation Excerpt :These ions are important for metabolism of the organisms but they are needed in limited amounts only. Otherwise, they can inhibit the metabolic effects of other vital ions like calcium (Xue et al., 2008). Hydropam and Cabloc CT contain sodium (Na+), Creasorb SIS potassium (K+) ions; their effects on different organisms can thus be diverse.
Calcium inhibited peel browning by regulating enzymes in membrane metabolism of ‘Nanguo’ pears during post-ripeness after refrigerated storage
2019, Scientia HorticulturaeCitation Excerpt :Transcription in the SOD activity of plants cells depends on SOD gene expression, and excessive expression in transgenic tobacco SOD gene can significantly improve the activity of SOD enzyme, and strengthen the ability of plants against active oxygen damage (Lee et al., 2007). Xue et al. (2008) reported that calcium can be up-regulated the SOD activity of antioxidant enzymes to improve plants salt resistance in Jerusalem artichoke. Moreover, Guo et al. (2006) found that calcium in barley can promote the coordinated changes of antioxidant enzyme activity and improve the scavenging rate of reactive oxygen species, so as to reduce the toxicity of aluminum to plants.
Interactive salt—Alkali stress and exogenous Ca<sup>2+</sup> effects on growth and osmotic adjustment of Lolium multiflorum in a coastal estuary
2017, Flora: Morphology, Distribution, Functional Ecology of PlantsCitation Excerpt :Knight (1999) argued that calcium is a signal molecule in a variety of physiological processes and plays an important role in the structure and physiological function of plant cells. Supplementing the appropriate amount of exogenous Ca2+ is important to maintain the stability of the cell membrane and improve plant resistance to salinity (Sobhanian et al., 2010; Xue et al., 2008; Kaya et al., 2002; Wright et al., 1992). In this study, when exogenous Ca2+ concentration was 0 (control for Group B), interactive salt − alkali stress would cause Na+ to replace the membrane-bound Ca2+, thus increasing Na+ toxicity.
Jerusalem artichoke (Helianthus tuberosus, L.) maintains high inulin, tuber yield, and antioxidant capacity under moderately-saline irrigation waters
2016, Industrial Crops and ProductsCitation Excerpt :These authors showed that Jerusalem artichoke irrigated with 10% seawater (ECw = 6.4 dS m−1) significantly increased levels of ascorbate and glutathione in roots, and glutathione reductase in leaves and roots, while the levels of ascorbate reductase remained unchanged by salinity in both leaves and roots. Xue et al. (2008) reported that salt-stressed (150 mmolc L-1 NaCl − about 15 dS m−1) reduced the activity of superoxide dismutase, peroxidase, and catalase. Malondialdehyde has also been described as an indicator of membrane damage caused by lipid peroxidation and used to differentiate salt-tolerant from salt-sensitive species (Chen et al., 2011).
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Project supported by the National High Technology Research and Development Program of China (863 Program) (No. 2003AA627040).