Spermidine application alleviates salinity damage to antioxidant enzyme activity and gene expression in alfalfa

Ecotoxicology
Yanhong LouYuping Zhuge

Abstract

We investigated whether spermidine (Spd) application alleviates salinity-induced damage in alfalfa (Medicago sativa L), and explored defence mechanisms associated with stress-related ion balance, antioxidant metabolism, and gene expression. We examined the response of 30-day-old alfalfa maintained in hydroponic culture tests for 7 days and subjected to one of six treatments: half-strength Hoagland solution (control); 1% NaCl; 10 μM Spd + 1% NaCl; 20 μM Spd + 1% NaCl; 40 μM Spd + 1% NaCl; and 60 μM Spd + 1% NaCl. In salinity-stressed plants, chlorophyll b, chlorophyll a + b, and total protein showed significant decreases, while marked increases were detected in relative electrolyte leakage, H2O2 content, glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), glutathione reductase (GR) activity, the Na+/K+ ratio, and APX1, APX2, GR, and SOD gene expression levels. Chlorophyll a and total protein content markedly increased under exogenous application of 20 μM Spd, while H2O2 content, GSH, SOD, CAT, POD, GR activity, the Na+/K+ ratio, and APX2, GR, and SOD expression levels all decreased. These results indicated that exogenous application of 20 μM spermidine effectively alleviates salinity-induced damage i...Continue Reading

References

Sep 16, 2003·Current Opinion in Plant Biology·Jian Kang Zhu
Jul 13, 2005·Journal of Plant Physiology·Sarita Verma, Shyam Narayan Mishra
Apr 10, 2009·Plant Physiology and Biochemistry : PPB·Jinn-Chin YiuYu-Shen Lai
Apr 9, 2013·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·Neusa MartinsAnabela Romano
Aug 6, 2013·Plant Physiology and Biochemistry : PPB·M Rokebul AnowerYajun Wu
Apr 15, 2014·Ecotoxicology and Environmental Safety·ZongBo QiuManMan Zhang
May 6, 2014·Ecotoxicology and Environmental Safety·Weiti CuiWenbiao Shen
Aug 5, 2017·Frontiers in Physiology·Dekoum V M AssahaMahmoud W Yaish

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