Biologia plantarum 2013, 57:370-374 | DOI: 10.1007/s10535-012-0286-9

Drought induced programmed cell death and associated changes in antioxidants, proteases, and lipid peroxidation in wheat leaves

A. Hameed1,*, M. Goher1, N. Iqbal1
1 Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan

Two wheat (Triticum aestivum L.) genotypes with varying degree of drought tolerance were used to analyze programmed cell death (PCD) and related biochemical changes under drought stress. Drought induced PCD in leaves, as evident by internucleosomal nDNA fragmentation, was observed in sensitive genotype Nesser. Drought tolerant genotype (FD-83) showed higher peroxidase, superoxide dismutase, and catalase activities and ascorbate content under drought stress compared to sensitive genotype. Total phenolic content increased whereas lipid peroxidation remained un-changed under drought in FD-83. In contrast, drought enhanced the proteases and ascorbate peroxidase activities and lipid peroxidation (MDA content) in Nesser.

Keywords: MDA; phenolics; proteases; Triticum aestivum
Subjects: water stress; programmed cell death; antioxidants; protease; lipid peroxidation; wheat; malondialdehyde; phenolics; catalase; peroxidase; superoxide dismutase; ascorbate peroxidase; proteins; ascorbic acid
Species: Triticum aestivum

Received: March 7, 2012; Accepted: August 9, 2012; Published: June 1, 2013Show citation

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Hameed, A., Goher, M., & Iqbal, N. (2013). Drought induced programmed cell death and associated changes in antioxidants, proteases, and lipid peroxidation in wheat leaves. Biologia plantarum, 57(2), 370-374. doi: 10.1007/s10535-012-0286-9.
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