Arid
DOI10.1016/j.sajb.2017.11.007
Physiological and biochemical changes in Periploca angustifolia plants under withholding irrigation and rewatering conditions
Dghim, F.1,2; Abdellaoui, R.1; Boukhris, M.2; Neffati, M.1; Chaieb, M.2
通讯作者Dghim, F.
来源期刊SOUTH AFRICAN JOURNAL OF BOTANY
ISSN0254-6299
EISSN1727-9321
出版年2018
卷号114页码:241-249
英文摘要

Periploca angustifolia (Labill.) is a multipurpose xerophytic shrubwidely distributed in arid zones. It is used in rehabilitation programs; its exploitation and utilization require the understanding of its behavior under stress conditions such as drought. To evaluate drought response and at what level it becomes irreversible, a new analysis of physiological and biochemical performances of this threatened shrub was conducted to assess possible mechanisms of drought tolerance and how these relate to its ecological success. Eleven-month-old plants, grown under semi-controlled conditions, were subjected to a well-watered control treatment or progressive drought by withholding water for 7, 14 and 21 d with subsequent recovery for 7-d. After 7 days of drought, followed by rewatering period, no significant effect on all studied parameters was recorded for P. angustifolia. However, from 14 until 21 days of withholding irrigation, drought becomes irreversible causing plant damages, may be rewatering has no effect to reduce these damages. A water deficit of 21 days RWC (33%), chlorophyll a content (0.083 mg.g(-1) DW), transpiration 14.7%, as well as water and osmotic potential (-3.40 and - 3.78 MPa) decreased significantly compared with control. While, proline content (0.25 mu mol . g-1 FW), soluble sugars (80.52 mmol.g(-1) DW) and vitamins C, E (1.9 mM.g(-1) FW) increased significantly that could indicate ability of osmotic adjustment in this species. Also the increases in RWC, water and osmotic potentials values after rewatering period indicate the good recovery of this plant. Based on these experiments, responses of P. angustifolia to water stress were typical of those of xerophytic plants. (C) 2017 SAAB. Published by Elsevier B.V. All rights reserved.


英文关键词Periploca angustifolia Drought Recovery Water potential Soluble sugars Vitamins
类型Article
语种英语
国家Tunisia
收录类别SCI-E
WOS记录号WOS:000419710000030
WOS关键词ACACIA-CYANOPHYLLA LINDL ; DROUGHT STRESS ; WATER-DEFICIT ; CHLOROPHYLL FLUORESCENCE ; ANTIOXIDANT METABOLISM ; PROLINE ACCUMULATION ; RAPID-DETERMINATION ; LIPID-PEROXIDATION ; OSMOTIC ADJUSTMENT ; WHEAT GENOTYPES
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/2XILL650/213267
作者单位1.Inst Arid Areas, Lab Range Ecol, Medenine 4119, Tunisia;
2.Univ Sfax, RU Plant Biol & Ecophysiol, Fac Sci Sfax, Sfax, Tunisia
推荐引用方式
GB/T 7714
Dghim, F.,Abdellaoui, R.,Boukhris, M.,et al. Physiological and biochemical changes in Periploca angustifolia plants under withholding irrigation and rewatering conditions[J],2018,114:241-249.
APA Dghim, F.,Abdellaoui, R.,Boukhris, M.,Neffati, M.,&Chaieb, M..(2018).Physiological and biochemical changes in Periploca angustifolia plants under withholding irrigation and rewatering conditions.SOUTH AFRICAN JOURNAL OF BOTANY,114,241-249.
MLA Dghim, F.,et al."Physiological and biochemical changes in Periploca angustifolia plants under withholding irrigation and rewatering conditions".SOUTH AFRICAN JOURNAL OF BOTANY 114(2018):241-249.
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