Growth, Osmolyte Concentration and Antioxidant Enzymes in the Leaves of Sesuvium portulacastrum L. Under Salinity Stress

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• 作者：P. Ramesh Kannan (1)
  S. Deepa (2)
  Swarna V Kanth (2)
  R. Rengasamy (1)
  
• 关键词：Halophyte ; Seapurslane ; Growth ; Osmolytes ; Antioxidant enzymes
• 刊名：Applied Biochemistry and Biotechnology
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：171
• 期：8
• 页码：1925-1932
• 全文大小：
• 作者单位：P. Ramesh Kannan (1)
  S. Deepa (2)
  Swarna V Kanth (2)
  R. Rengasamy (1)
  
  1. Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai, 600 025, India
  2. Centre for Human Organisational and Resource Development, Central Leather Research Institute (CSIR), Adyar, Chennai, 600 020, India
  
• ISSN：1559-0291

文摘

In this study, growth and osmolyte concentration in the leaves of halophyte, Sesuvium portulacastrum, were studied with respect to salinity. Therefore, the changes in shoot growth, leaf tissue water content, osmolyte concentration (proline content, glycine betaine) and antioxidant enzymes [polyphenol oxidase (PPO), superoxide dismutase (SOD) and catalase (CAT)] were investigated. The 30-day old S. portulacastrum plants were subjected to 100, 200, 300, 400, 500 and 600?mM NaCl for 28?days. The plant growth was steadily increased up to 500?mM NaCl stress at 28?days. TWC was higher in 300?mM NaCl treated leaves than that of 600?mM NaCl. Salinity stress induced the accumulation of osmolyte concentration when compared to control during the study period. The antioxidant enzymes PPO, CAT and SOD were increased under salinity.