TY - JOUR
T1 - Studies on germination, seedling vigour, lipid peroxidation and proline metabolism in Catharanthus roseus seedlings under salt stress
AU - Abdul Jaleel, C.
AU - Gopi, R.
AU - Sankar, B.
AU - Manivannan, P.
AU - Kishorekumar, A.
AU - Sridharan, R.
AU - Panneerselvam, R.
PY - 2007/4
Y1 - 2007/4
N2 - In the present investigation, 'rosea' and 'alba' varieties of Catharanthus roseus (L.) G. Don. seeds were grown with different concentrations (15, 30, 45 and 60 mM) of sodium chloride (NaCl), in order to study the effects of salinity on germination behaviour, seedling vigour (root and shoot length), lipid peroxidation (LPO) and proline metabolism. It was found that germination was delayed at lower salinity levels and inhibited at higher salinity regimes. NaCl treatment caused a serious decrease in the early seedling growth by means of reduced seedling vigour at higher salinity levels. The LPO was estimated as thiobarbituric acid reactive substances (TBARS) and found increased under salt stress. Glycine betaine (GB) and proline (PRO) contents significantly accumulated in both the varieties of seedlings under salt stress. Under NaCl stress, the activity of proline oxidase (PROX) decreased and the γ-glutamyl kinase (γ-GK) activity increased.
AB - In the present investigation, 'rosea' and 'alba' varieties of Catharanthus roseus (L.) G. Don. seeds were grown with different concentrations (15, 30, 45 and 60 mM) of sodium chloride (NaCl), in order to study the effects of salinity on germination behaviour, seedling vigour (root and shoot length), lipid peroxidation (LPO) and proline metabolism. It was found that germination was delayed at lower salinity levels and inhibited at higher salinity regimes. NaCl treatment caused a serious decrease in the early seedling growth by means of reduced seedling vigour at higher salinity levels. The LPO was estimated as thiobarbituric acid reactive substances (TBARS) and found increased under salt stress. Glycine betaine (GB) and proline (PRO) contents significantly accumulated in both the varieties of seedlings under salt stress. Under NaCl stress, the activity of proline oxidase (PROX) decreased and the γ-glutamyl kinase (γ-GK) activity increased.
KW - Catharanthus roseus
KW - Glycine betaine
KW - Proline
KW - Proline oxidase
KW - Salinity
KW - γ-Glutamyl kinase
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UR - http://www.scopus.com/inward/citedby.url?scp=33947715606&partnerID=8YFLogxK
U2 - 10.1016/j.sajb.2006.11.001
DO - 10.1016/j.sajb.2006.11.001
M3 - Article
AN - SCOPUS:33947715606
SN - 0254-6299
VL - 73
SP - 190
EP - 195
JO - South African Journal of Botany
JF - South African Journal of Botany
IS - 2
ER -