Effects of NaCI Stress on Germination, Antioxidant Responses, and Proline Content in Two Rice Cultivars

Effects of NaCI Stress on Germination, Antioxidant Responses, and Proline Content in Two Rice Cultivars

We investigated the physiological and biochemical bases for salt tolerance in two rice (Oryza sativa L.) cultivars -- relatively salt-tolerant 'Dongjin' and salt-sensitive 'Kumnam'. Salinized hydroponic cultures were studied at the germination and seedling stages. NaCI inhibited...

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Veröffentlicht in:Journal of plant biology = Singmul Hakhoe chi 2005-06, Vol.48 (2)
Hauptverfasser: Sohn, Y.G. (Namhae Substation, NHRI, RDA, Namhae, Republic of Korea), Lee, B.H. (Gyeongsang National University, Jinju, Republic of Korea), Kang, K.Y. (Gyeongsang National University, Jinju, Republic of Korea), Lee, J.J. (Gyeongsang National University, Jinju, Republic of Korea), E-mail: jjl@gshp.gsnu.ac.kr
Format: Artikel
Sprache:eng
Schlagworte:
ANTIOXIDANTES
ANTIOXIDANTS
ANTIOXYDANT
ESTRES OSMOTICO
GERMINACION
GERMINATION
OSMOTIC STRESS
PROLINA
PROLINE
rice cultivars
STRESS OSMOTIQUE
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Zusammenfassung:We investigated the physiological and biochemical bases for salt tolerance in two rice (Oryza sativa L.) cultivars -- relatively salt-tolerant 'Dongjin' and salt-sensitive 'Kumnam'. Salinized hydroponic cultures were studied at the germination and seedling stages. NaCI inhibited germination more severely in 'Kumnam' than in 'Dongjin'. Increasing the salt concentration also deterred growth to a larger extent in the former. Moreover, the leaves of 'Kumnam' exhibited greater increases in lipid peroxidation and Na+ accumulation than those of 'Dongjin' under stress.
ISSN:1226-9239
1867-0725