干旱区生态环境知识资源中心(Arid): The Regulation of Ion Homeostasis, Growth, and Biomass Allocation in Date Palm Ex Vitro Plants Depends on the Level of Water Salinity

Arid

DOI	10.3390/su141912676
	The Regulation of Ion Homeostasis, Growth, and Biomass Allocation in Date Palm Ex Vitro Plants Depends on the Level of Water Salinity
	Hammami, Sofiene B. M.; Chaari, Sami; Baazaoui, Narjes; Drira, Riadh; Drira, Noureddine; Aounallah, Karim; Maazoun, Asma; Antar, Zied; Novo, Jesus V. Jorrin; Bettaieb, Taoufik; Rapoport, Hava F.; Sghaier-Hammami, Besma
通讯作者	Hammami, SBM
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2022
卷号	14 期号:19
英文摘要	The date palm, a central plant in the fragile oasis ecosystem, is considered one of the fruit species most tolerant to salt stress. However, the tolerance mechanisms involved are yet to be addressed and their evaluation until now was mainly based on heterogenous plant material such as seedlings or limited to in vitro experiment conditions. For these reasons, we propose to deepen our knowledge of the morphological and physiological responses to salt stress using acclimated ex vitro plants resulting from the propagation of a single genotype. The plants were irrigated with 0, 150, 300, or 450 mM NaCl solutions for four months. Our results showed that the influence of water salinity on growth and ion-homeostasis regulation was very dependent on stress levels. The 150 mM NaCl concentration was found to improve dry biomass by about 35%, but at higher salt concentrations (300 and 450 mM) it decreased by 40-65%. The shoot:root dry mass ratio decreased significantly at the 150 mM NaCl water concentration and then increased with increasing water salt concentration. The leaf:root ratio for Na+ and Cl- decreased significantly with increasing water salinity up to a concentration of 300 mM NaCl, and then stabilized with similar values for 300 mM and 450 mM NaCl. In contrast to Na+ and Cl-, leaf K+ content was significantly higher in the leaf than in the root for all salt treatments. Unlike Na+ and K+, Cl- was expelled to the surface of leaves in response to increased water salinity. Overall, date palm plants appear to be more capable of excluding Cl- than Na+ and of changing biomass allocation according to salt-stress level, and their leaves and roots both appear to play an important role in this tolerance strategy.
英文关键词	ex vitro plants ions exclusion and uptakes Phoenix dactylifera salt stress adaptation salt stress avoidance
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000867362800001
WOS关键词	PHOENIX-DACTYLIFERA L. ; GAS-EXCHANGE ; NITROGEN UPTAKE ; SALT TOLERANCE ; STRESS ; MECHANISMS ; POTASSIUM ; DROUGHT ; CULTIVARS ; SEEDLINGS
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394655
推荐引用方式 GB/T 7714	Hammami, Sofiene B. M.,Chaari, Sami,Baazaoui, Narjes,et al. The Regulation of Ion Homeostasis, Growth, and Biomass Allocation in Date Palm Ex Vitro Plants Depends on the Level of Water Salinity[J],2022,14(19).
APA	Hammami, Sofiene B. M..,Chaari, Sami.,Baazaoui, Narjes.,Drira, Riadh.,Drira, Noureddine.,...&Sghaier-Hammami, Besma.(2022).The Regulation of Ion Homeostasis, Growth, and Biomass Allocation in Date Palm Ex Vitro Plants Depends on the Level of Water Salinity.SUSTAINABILITY,14(19).
MLA	Hammami, Sofiene B. M.,et al."The Regulation of Ion Homeostasis, Growth, and Biomass Allocation in Date Palm Ex Vitro Plants Depends on the Level of Water Salinity".SUSTAINABILITY 14.19(2022).