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Abstract Detail



Ecophysiology

Rasheed, Aysha [1], Gul , Bilquees  [1], Hameed, Abdul [1], KHAN , M AJMAL [2].

Growth, oxidative damage and antioxidant enzyme activities in NaCl-treated seedlings of a leaf succulent halophyte Salsola drummondii (Amaranthaceae).

Salsola drummondii Ulbr., is a leaf succulent halophyte commonly distributed in salt deserts of southern Balochistan (Pakistan). Little information is available on the salinity tolerance of this species. We are reporting here the results of studies conducted on growth and oxidative stress management of S. drummondii seedlings in response to NaCl concentrations (0, 200 and 400 mM). Individuals treated with 200 mM NaCl showed better seedling growth compared to non-saline control with little sign of oxidative damage and unchanged antioxidant enzymes activity. Growth reduction was observed at higher (400 mM NaCl) salinity and antioxidant enzymes activities were also increased. However, seedlings still suffered a higher oxidative damage indicating that the rise in antioxidant enzyme activities was not adequate. Growth reduction of S. drummondii seedlings at high salinity perhaps represents an inadequacy of antioxidant defense in meeting the challenge posed by high oxidative stress.


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1 - University of Karachi, Institute of Sustainable Halophyte Utilization, Karachi, 75270, PAK
2 - Qatar University, Centre for Sustainable Development, Doha, Dawha, ., Qatar

Keywords:
Antioxidant
growth
Halophytes
salinity.

Presentation Type: Poster:Posters for Topics
Session: P
Location: Eyrie/Boise Centre
Date: Monday, July 28th, 2014
Time: 5:30 PM
Number: PEP002
Abstract ID:159
Candidate for Awards:None


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