Arid
DOI10.1007/s11738-007-0047-0
Salt tolerance of the annual halophyte Cakile maritima as affected by the provenance and the developmental stage
Megdiche, Wided; Ben Amor, Nader; Debez, Ahmed; Hessini, Kamel; Ksouri, Riadh; Zuily-Fodil, Yasmine; Abdelly, Chedly
通讯作者Ksouri, Riadh
来源期刊ACTA PHYSIOLOGIAE PLANTARUM
ISSN0137-5881
EISSN1861-1664
出版年2007
卷号29期号:4页码:375-384
英文摘要

Though halophytes are naturally adapted to salinity, their salt-tolerance limits are greatly influenced by their provenance and developmental stage. In the present study, physio-biochemical responses of two Tunisian ecotypes of the oilseed coastal halophyte Cakile maritima ( Brassicaceae) to salinity (0-400 mM NaCl) were monitored during germination and vegetative growth stages. Tabarka and Jerba seeds were collected from humid or arid climatic areas, respectively. Plant response to salinity appeared to depend on the ecotype and salinity levels. Increasing salinity inhibited germination process. Jerba seeds were found to be more salt tolerant than the Tabarka ones. At the autotrophic stage of growth and under salt-free conditions, Jerba was less productive than Tabarka ( in terms of dry matter accumulation), but plant biomass production and leaf expansion ( area and number) of the former ecotype were progressively improved by 100 mM NaCl, as compared to the control. In contrast, at the same salt concentration, these parameters decreased under increasing salinity in Tabarka ( salt sensitive). Leaf chlorophyll content was reduced at severe salinity, but this effect was more conspicuous in the sensitive Tabarka plants. Na+ contents in the Jerba and Tabarka leaves collected from the 400 mM NaCl-treated plants were 17- and 12-fold higher than in the respective controls. This effect was accompanied by a significant reduction in the leaf K+, Mg2+ and Ca2+ contents, especially in the salt-treated Tabarka. A significant accumulation of proline and soluble carbohydrates in leaves was found during the period of intensive leaf growth. These organic compounds likely play a role in leaf osmotic adjustment and in protection of membrane stability at severe salinity.


英文关键词Cakile maritima compatible solute germination ion accumulation provenance salt tolerance vegetative growth stage
类型Article
语种英语
国家Tunisia ; France
收录类别SCI-E
WOS记录号WOS:000249586500011
WOS关键词RAPID-DETERMINATION ; SALINITY TOLERANCE ; SEED-GERMINATION ; WATER RELATIONS ; ACCUMULATION ; STRESS ; PLANTS ; PROLINE ; GROWTH ; GLYCINEBETAINE
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/153292
作者单位(1)CBBC, Lab Adaptat Plantes Stress Abiot, Hammam Lif, Tunisia;(2)Univ Paris 12, Lab Ecophysiol Mol, Paris, France
推荐引用方式
GB/T 7714
Megdiche, Wided,Ben Amor, Nader,Debez, Ahmed,et al. Salt tolerance of the annual halophyte Cakile maritima as affected by the provenance and the developmental stage[J],2007,29(4):375-384.
APA Megdiche, Wided.,Ben Amor, Nader.,Debez, Ahmed.,Hessini, Kamel.,Ksouri, Riadh.,...&Abdelly, Chedly.(2007).Salt tolerance of the annual halophyte Cakile maritima as affected by the provenance and the developmental stage.ACTA PHYSIOLOGIAE PLANTARUM,29(4),375-384.
MLA Megdiche, Wided,et al."Salt tolerance of the annual halophyte Cakile maritima as affected by the provenance and the developmental stage".ACTA PHYSIOLOGIAE PLANTARUM 29.4(2007):375-384.
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