Journal of Food, Agriculture and Environment

Physiological response of two species of datura to uniconazole and salt stress

Author(s):

May M. Al-Rumaih, Muna M. Al-Rumaih

Recieved Date: 2007-04-08, Accepted Date: 2007-08-21

Abstract:

The effect of different concentrations of NaCl (0, 100, 150, 200 and 300 mM) and the plant growth regulator uniconazole on protein and amino acid levels, nitrate reductase and protease activities in roots and shoots of two species of datura (Datura innoxia and Datura stramonium) was investigated. Salt stress imposed by NaCl induced a significant decrease in protein content along with the activity of nitrate reductase in the developed seedlings. It also significantly enhanced protease activity and increased amino acid levels. These changes were more significant at higher salinity levels. Pre-soaking seeds in uniconazole counteracted the adverse effects of salinity. It significantly increased protein levels and stimulated nitrate reductase activity, particularly at lower NaCl concentrations. It also decreased amino acid levels and repressed the activity of protease. Roots were more significantly affected by salt stress than shoots, and less affected by the combined treatment. The studied species exhibited almost a similar response to the different treatments. The importance of uniconazole in inducing salinity tolerance in datura plants is discussed.

Keywords:

Amino acids, nitrate reductase, proteins, salinity, stress, uniconazole

---

Journal: Journal of Food, Agriculture and Environment
Year: 2007
Volume: 5
Issue: 3&4
Category: Environment
Pages: 450-453

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :