Differentiation of Barley Response to Drought and Salt Stress in Antioxidant Enzyme Activity and Free Amino Acid Content
2006
Kim, D.W. (National Institute of Crop Science, RDA, Suwon, Republic of Korea), E-mail: [email protected] | Heo, H.Y. (National Institute of Crop Science, RDA, Suwon, Republic of Korea) | Suh, S.J. (National Institute of Crop Science, RDA, Suwon, Republic of Korea) | Lee, Y.H. (National Institute of Crop Science, RDA, Suwon, Republic of Korea) | Kim, S.J. (National Institute of Crop Science, RDA, Suwon, Republic of Korea)
To differentiate barley responses to drought and salt stress, barley seedlings at the second leaf stage were treated with 218 mM NaCl and 29.5% PEG6000 iso-osmotic to 218 mM NaCl for 6 days. Shoot fresh weight and leaf relative water content of barley seedlings were more reduced by drought compared to salt stress. Hydrogen peroxide content increased under both stress conditions, but its accumulation was more severe at 6 days after salt stress. The activity of ascorbate peroxidase, glutathione reductase (GR) and catalase (CAT) was enhanced until 4 days after salt stress.
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