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Morphological, physiological, and structural responses of two species of artemisia to NaCl stress.
- Source :
-
TheScientificWorldJournal [ScientificWorldJournal] 2013 Oct 22; Vol. 2013, pp. 309808. Date of Electronic Publication: 2013 Oct 22 (Print Publication: 2013). - Publication Year :
- 2013
-
Abstract
- Effects of salt stress on Artemisia scoparia and A. vulgaris "Variegate" were examined. A. scoparia leaves became withered under NaCl treatment, whereas A. vulgaris "Variegate" leaves were not remarkably affected. Chlorophyll content decreased in both species, with a higher reduction in A. scoparia. Contents of proline, MDA, soluble carbohydrate, and Na(+) increased in both species under salt stress, but A. vulgaris "Variegate" had higher level of proline and soluble carbohydrate and lower level of MDA and Na(+). The ratios of K(+)/Na(+), Ca(2+)/Na(+), and Mg(2+)/Na(+) in A. vulgaris "Variegate" under NaCl stress were higher. Moreover, A. vulgaris "Variegate" had higher transport selectivity of K(+)/Na(+) from root to stem, stem to middle mature leaves, and upper newly developed leaves than A. scoparia under NaCl stress. A. vulgaris "Variegate" chloroplast maintained its morphological integrity under NaCl stress, whereas A. scoparia chloroplast lost integrity. The results indicated that A. scoparia is more sensitive to salt stress than A. vulgaris "Variegate." Salt tolerance is mainly related to the ability of regulating osmotic pressure through the accumulation of soluble carbohydrates and proline, and the gradient distribution of K(+) between roots and leaves was also contributed to osmotic pressure adjustment and improvement of plant salt tolerance.
- Subjects :
- Artemisia growth & development
Cations, Divalent metabolism
Cations, Monovalent metabolism
Metals metabolism
Plant Leaves growth & development
Plant Roots growth & development
Salt Tolerance drug effects
Artemisia metabolism
Chloroplasts metabolism
Osmotic Pressure drug effects
Plant Leaves metabolism
Plant Roots metabolism
Sodium Chloride pharmacology
Subjects
Details
- Language :
- English
- ISSN :
- 1537-744X
- Volume :
- 2013
- Database :
- MEDLINE
- Journal :
- TheScientificWorldJournal
- Publication Type :
- Academic Journal
- Accession number :
- 24235883
- Full Text :
- https://doi.org/10.1155/2013/309808