Effect of seed soaking with thiols on the antioxidant enzymes and photosystem activities in wheat subjected to water stress

• Published in: Biologia plantarum Vol. 51; no. 1; pp. 93 - 97
• Main Authors: Nathawat, N.S, Nair, J.S, Kumawat, S.M, Yadava, N.S, Singh, G, Ramaswamy, N.K, Sahu, M.P, D'Souza, S.F
• Format: Journal Article
• Language: English
• Published: 01-03-2007
• Subjects: ACTIVIDAD ENZIMATICA; ACTIVITE ENZYMATIQUE; ANTIOXIDANTES; ANTIOXIDANTS; ANTIOXYDANT; BLE; COMPOSE ORGANOSOUFRE; COMPUESTO ORGANICO DEL AZUFRE; DROUGHT STRESS; ENZYME ACTIVITY; ESTRES DE SEQUIA; FEUILLE; FOTOSINTESIS; FOTOSISTEMAS; GRAINE; HOJAS; http://www.fao.org/aos/agrovoc#c_13251; http://www.fao.org/aos/agrovoc#c_24993; http://www.fao.org/aos/agrovoc#c_2604; http://www.fao.org/aos/agrovoc#c_33523; http://www.fao.org/aos/agrovoc#c_4243; http://www.fao.org/aos/agrovoc#c_511; http://www.fao.org/aos/agrovoc#c_5402; http://www.fao.org/aos/agrovoc#c_5477; http://www.fao.org/aos/agrovoc#c_5812; http://www.fao.org/aos/agrovoc#c_6945; http://www.fao.org/aos/agrovoc#c_6946; http://www.fao.org/aos/agrovoc#c_7951; http://www.fao.org/aos/agrovoc#c_8373; LEAVES; ORGANOSULPHUR COMPOUNDS; OXIGENO; OXYGEN; OXYGENE; PEROXIDASAS; PEROXIDASES; PEROXYDASE; PHOTOSYNTHESE; PHOTOSYNTHESIS; PHOTOSYSTEME; PHOTOSYSTEMS; PLANTULAS; PLANTULE; SEEDLINGS; SEEDS; SEMILLA; STRESS DU A LA SECHERESSE; TRIGO; TRITICUM AESTIVUM; WHEATS
• ISSN: 0006-3134; 1573-8264
• DOI: 10.1007/s10535-007-0019-7

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.