Studies on germination, seedling vigour, lipid peroxidation and proline metabolism in Catharanthus roseus seedlings under salt stress

被引：212

作者：

Jaleel, C. Abdul ^{[1
]}

Gopi, R. ^{[1
]}

Sankar, B. ^{[1
]}

Manivannan, P. ^{[1
]}

Kishorekumar, A. ^{[1
]}

Sridharan, R. ^{[1
]}

Panneerselvam, R. ^{[1
]}

机构：

[1] Annamalai Univ, Dept Bot, Div Plant Physiol, Annamalainagar 608002, Tamil Nadu, India

来源：

SOUTH AFRICAN JOURNAL OF BOTANY | 2007年 / 73卷 / 02期

关键词：

Catharanthus roseus; glycine betaine; proline; proline oxidase; salinity; gamma-glutamyl kinase;

D O I：

10.1016/j.sajb.2006.11.001

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

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 gamma-glutamyl kinase (gamma-GK) activity increased. (c) 2006 SAAB. Published by Elsevier B.V. All fights reserved.

引用

页码：190 / 195

页数：6

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