Spermidine sprays alleviate the water deficit-induced oxidative stress in finger millet (Eleusine coracana L. Gaertn.) plants

• Published in: 3 Biotech Vol. 8; no. 1; pp. 63 - 11
• Main Authors: Satish, Lakkakula, Rency, Arockiam Sagina, Ramesh, Manikandan
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.01.2018; Springer Nature B.V
• Subjects: Agriculture; Bioinformatics; Biomaterials; Biotechnology; Cancer Research; Caspase; Chemistry; Chemistry and Materials Science; Chlorophyll; Drought; Electrolytes; Eleusine coracana; Flowering; Hydrogen peroxide; Leakage; leaves; Millet; Moisture content; Original; Original Article; Oxidative stress; Plant growth; Proline; root growth; Roots; Shoots; Spermidine; Sprayers; Stem Cells; Water content; Water stress; Drought stress; Physiological parameters; Finger millet; Polyamines; Spermidine
• ISSN: 2190-572X; 2190-5738
• DOI: 10.1007/s13205-018-1097-2

Severe drought stress (water deficit) in finger millet ( Eleusine coracana L. Gaertn.) plants significantly reduced total leaf chlorophyll and relative water content in shoots and roots, whereas electrolyte leakage, concentrations of proline and hydrogen peroxide, as well as caspase-like activity were significantly increased. The role of spermidine in plant defence to water-stress was investigated after subjected to various drought treatments. Three weeks of daily spermidine sprays (0.2 mM) at early flowering stage significantly changed shoot and root growth, in both fresh and dry weights terms. At 75% of water deficit stress, leaves accumulated twice as much proline as unstressed plants, and roots accumulated thrice. Plants treated with spermidine under water stress showed lower electrolyte leakage, hydrogen peroxide and caspase-like activity than unstressed and untreated control.