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Publication Type J
Authors Naz, N., R. Batool, S. Fatima, M. Hameed, M. Ashraf, F. Ahmad and M. S. A. Ahmad
Title Adaptive components of tolerance to salinity in a saline desert grass Lasiurus scindicus Henrard
Source Ecological Research
Author Keywords Bulliform cell Desert halophyte Ion content Salt excretion Sclerification Structural adaptation CHOLISTAN DESERT SALT STRESS PAKISTAN ADAPTATIONS PLANTS RESPONSES PATTERNS SYSTEMS ROOTS
Abstract Five differently adapted natural populations of the native salt desert grass Lasiurus scindicus Henrard from Lesser Cholistan Desert (Pakistan) in South Punjab of east central Pakistan, were evaluated to examine their mechanism of adaptation to saline stress based on some key morpho-anatomical and physiological characteristics. Five ecotypes were collected from one saline site, two moderately saline sites, and two highly saline sites. Anatomical adaptations in each ecotype critically supported the physiological, but the adaptations were of specific nature depending on the type of each site's normal habitat conditions. Higher salinities resulted in increased Na+, Cl-, Mg2+, Ca2+ and K+ content in root and shoot. At root level, some specific structural modifications like increased sclerification in cortical and pith regions, endodermal thickness, and number and size of xylem vessels are vital for water conservation under osmotic stress. Several characteristics were promising for increasing the plants ability to deal with osmotic stress, including at the stem level, increased sclerification, stem area, cortical region thickness and vascular bundle area, and at the leaf level, significant structural modifications such as leaf thickness, epidermal thickness, sclerenchymatous area, cortical area, metaxylem area and bulliform cell area were promising. All these may contribute towards water conservation, which ultimately account for ecotype survival under saline-induced physiological droughts.
Author Address [Naz, Nargis] Islamia Univ Bahawalpur, Dept Life Sci, Bahawalpur 63100, Pakistan. [Batool, Riffat] Govt Coll Women Univ, Dept Bot, Faisalabad 38040, Pakistan. [Fatima, Sana; Hameed, Mansoor; Ahmad, Farooq; Ahmad, Muhammad Sajid Aqeel] Univ Agr Faisalabad, Dept Bot, Faisalabad 38040, Pakistan. [Ashraf, Muhammad] Muhammad Nawaz Shareef Univ Agr, Multan 60000, Pakistan. Hameed, M (reprint author), Univ Agr Faisalabad, Dept Bot, Faisalabad 38040, Pakistan. hameedmansoor@yahoo.com
ISSN 0912-3814
ISBN 0912-3814
29-Character Source Abbreviation Ecol. Res.
Publication Date May
Year Published 2015
Volume 30
Issue 3
Beginning Page 429-438
Digital Object Identifier (DOI) 10.1007/s11284-014-1236-0
Unique Article Identifier WOS:000354817700003
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