Abstract
Photosystem 1 and 2 and antioxidant enzyme activities were determined in wheat (Triticum aestivum L. cv. Sonalika) leaves. Seedlings from both control seeds and seeds soaked in solutions like dithiothreitol, thioglycollic acid and thiourea were subjected to water stress induced by polyethylene glycol. Photosystem 1 and 2 activities were less inhibited by water stress due to seed soaking with sulphydryl compounds. The changes in activities of antioxidant enzymes induced by water stress were higher in seedlings from thiol-pretreated seeds than from water-soaked seeds.
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Abbreviations
- ε:
-
coefficient of absorbance
- APOX:
-
ascorbate peroxidase
- CAT:
-
catalase
- Chl:
-
chlorophyll
- DCQ:
-
2,6-dichloro-p-benzoquinone
- DTT:
-
dithiothreitol
- EDTA:
-
ethylenediaminetetraacetic acid
- GPOX:
-
guaiacol peroxidase
- GR:
-
glutathione reductase
- GSH:
-
glutathione reduced form
- GSSG:
-
glutathione oxidised form
- GST:
-
glutathione-S-transferase
- MeV:
-
methyl viologen
- NADP+ :
-
nicotinamide adenine dinucleotide oxidised form
- NADPH:
-
nicotinamide adenine dinucleotide phosphate reduced form
- NBT:
-
nitroblue tetrazolium
- PEG:
-
polyethylene glycol
- PS 1, PS 2:
-
photosystems 1 and 2
- ROS:
-
reactive oxygen species
- PVP:
-
polyvinylpolypyrrolidone
- SOD:
-
superoxide dismutase
- TGA:
-
thioglycolic acid
- TU:
-
thiourea
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Nathawat, N.S., Nair, J.S., Kumawat, S.M. et al. Effect of seed soaking with thiols on the antioxidant enzymes and photosystem activities in wheat subjected to water stress. Biol Plant 51, 93–97 (2007). https://doi.org/10.1007/s10535-007-0019-7
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DOI: https://doi.org/10.1007/s10535-007-0019-7