Photosynthetica, 2007 (vol. 45), issue 3

Photosynthetica 2007, 45(3):477-480 | DOI: 10.1007/s11099-007-0081-6

Effect of seed soaking with sulphydryl compounds on the photochemical efficiency and antioxidant defence system during the growth of pearl millet under water limiting environment

N. K. Ramaswamy2,*, N. S. Nathawat1, J. S. Nair2, H. R. Sharma1, S. M. Kumawat1, Govind Singh1, M. P. Sahu1, S. F. D'Souza2
1 Rajasthan Agricultural University, Bikaner, India
2 Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India

Pearl millet (Pennisetum glaucum L. cv. HHB-67) seeds were pre-soaked in sulphydryl compounds (dithiothreitol, thioglycollic acid, thiourea, and cysteine). In plants at 59 and 67 d after sowing (DAS), activities of photosystem (PS) 2 (ferricyanide site) and PS1, both chloroplastic and total superoxide dismutase, glutathione reductase, and glutathione-S-transferase increased after all sulphydryl pre-treatments at both stages of plant development. Also dry matter of plant parts sampled at 55 DAS was higher after thiol-treatments in comparison with control.

Keywords: antioxidant enzymes; drought tolerance; photosystems 1 and 2; seed soaking; thiols

Received: October 16, 2006; Accepted: December 12, 2006; Published: September 1, 2007Show citation

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Ramaswamy, N.K., Nathawat, N.S., Nair, J.S., Sharma, H.R., Kumawat, S.M., Singh, G., Sahu, M.P., & D'Souza, S.F. (2007). Effect of seed soaking with sulphydryl compounds on the photochemical efficiency and antioxidant defence system during the growth of pearl millet under water limiting environment. Photosynthetica, 45(3), 477-480. doi: 10.1007/s11099-007-0081-6.
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