Comparative study of the effects of mannitol and PEG osmotic stress on growth and solute accumulation in Sesuvium portulacastrum

Slama, Inès; Ghnaya, Tahar; Hessini, Kamel; Messedi, Dorsaf; Savouré, Arnould; Abdelly, Chédly

doi:10.1016/j.envexpbot.2007.02.004

Cited by 106 publications

(75 citation statements)

References 25 publications

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“…In the present study, the toxic symptoms in oil palm seedlings grown under PEG-induced osmotic stress were greater than those under mannitol-induced iso-osmotic stress. Similar results have been observed in Sesuvium portulacastrum (Slama et al, 2007) and rice (Pandey et al, 2004). Biomass production in higher plants is achieved by the photosynthetic ability, which is inhibited by osmotic stress.…”

Section: Growth Performancesupporting

confidence: 86%

“…In contrast, shoot than under mannitol-induced iso-osmotic stress (Pandey et al, 2004). In contrast, proline accumulation in the leaf tissues of Sesuvium portulacastrum under PEG-induced stress was lower than plants grown under mannitolinduced iso-osmotic stress (Slama et al, 2007). Proline accumulation in stress conditions was not only dependent on the type of stressor but also the plant species.…”

Section: Growth Performancementioning

confidence: 90%

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Physio-Biochemical Responses of Oil Palm (Elaeis guineensisJacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Cha–um

Takabe

Kirdmanee

2012

Plant Production Science

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Section: Growth Performancesupporting

confidence: 86%

Section: Growth Performancementioning

confidence: 90%

Physio-Biochemical Responses of Oil Palm (Elaeis guineensisJacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Cha–um

Takabe

Kirdmanee

2012

Plant Production Science

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“…'Japanese Yellow' grown under 0 (control) or 5% PEG-induced water deficit in the hydroponic culture and in the soil (positive check) for 4 months (Önder et al, 2015). In agreement, leaf fresh, leaf dry, root fresh and root dry weight of Sesuvium portulacstrum grown under water deficit for 12 days were significantly dropped (Slama et al, 2007). In soybean, shoot height was declined by 17.84% when plants were subjected to 8% PEG for 14 days, leading to reduce yield traits, number of pods per plant (39.72% of control), pod dry weight (51.85% of control) and seed yield per plant (54.25% of control) (Hamayun et al, 2010).…”

Section: Discussionsupporting

confidence: 61%

Physiological, Morphological Changes and Storage Root Yield of Sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-Induced Water Stress

Yooyongwech

Samphumphung

Tisaram

et al. 2017

Not Bot Horti Agrobo

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Sweetpotato is an important tuberous root crop rich in nutrients such as vitamins and carbohydrates, and can grow well in arid regions with less water consuming crop. The aim of this research was to evaluate the storage root yields, physiological, biochemical and morphological traits in sweetpotato cv. 'Japanese Yellow' subjected to polyethylene glycol (PEG)-induced water deficit. At harvest (4 months after planting) the number of storage roots per plant and storage root fresh weight in sweetpotato treated with 5% PEG (−0.54 MPa) in nutrient solution of hydroponic culture declined by 20.0% and 47.4% compared to the control without PEG, respectively. Leaf area and leaf dry weight significantly decreased by 85.6% and 95.3%, respectively when exposed to water deficit stress. Sucrose content (114.7 mg g -1 dry weight; DW) in storage roots of sweetpotato grown under PEG-induced water deficit conditions was enriched by 2.2 fold of control (52.5 mg g -1 DW) and was greater than in storage roots derived from soil culture (70.3 mg g -1 DW). Total soluble sugar in the root and storage root tissues was enriched and may play a key role as osmotic adjustment (OA) in PEG-induced water stressed plants. Free proline and sucrose contents were also dominated in the leaf tissues to maintain the leaf osmotic potential in water stressed plants. In addition, chlorophyll degradation, chlorophyll fluorescence diminution and stomatal closure were found in plants grown under PEG-induced water deficit conditions, leading to reduction in net photosynthetic rate (Pn) and subsequently lesser amounts of glucose and fructose contents in the leaf tissues. Sucrose and free proline in the roots of sweetpotato play a key role as major osmotic adjustment when subjected to PEG-induced water deficit condition. Basic knowledge gained from this research will further be investigated the drought defense mechanism in sweetpotato via osmoregulation system.

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“…Other negative effects of osmotic stress include disorders in such physiological reactions as photosynthesis and formation of the reactive oxygen species (ROS) which lead to oxidation of proteins, amino and nucleic acids, lipid peroxidation, damage and even cell death (Reddy et al 2004;Sobhanian et al 2011). Osmotic stress also causes an ion homeostasis disorder and a reduction of chlorophyll and carotene content (Slama et al 2007;Quados 2010;Sobhanian et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Changes in the root proteome of Triticosecale grains germinating under osmotic stress

2013

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Osmotic stress causes many adverse symptoms in plants, which include, for example, growth limitation and decrease or even absence of yield. Proteomic analyses of plant responses to stressors could lead to the introduction of crops with high resistance to osmotic stress. Such plants would be characterized by high yield even under unfavorable environmental conditions. In this article we describe changes in the protein profiles occurring in response to mild and moderate osmotic stress in triticale roots. Analysis of the protein profiles of these roots showed an increased abundance of 14 and a decreased abundance of 11 proteins under mild osmotic stress conditions while a moderate osmotic stress caused an increased abundance of 18 and a decreased abundance of 33 proteins. Twenty-five proteins, whose quantity altered under stress were identified using MALDI-TOF mass spectrometry. The identified proteins were classified into the categories of proteins associated with: defense mechanisms, metabolism, transcription, cell structure, protein synthesis, transport and signal transduction. The functions of identified proteins were discussed in relation to osmotic stress. Some of the identified proteins may be responsible for the adaptation of plants to adverse conditions.

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Comparative study of the effects of mannitol and PEG osmotic stress on growth and solute accumulation in Sesuvium portulacastrum

Cited by 106 publications

References 25 publications

Physio-Biochemical Responses of Oil Palm (Elaeis guineensisJacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Physio-Biochemical Responses of Oil Palm (Elaeis guineensisJacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Physiological, Morphological Changes and Storage Root Yield of Sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-Induced Water Stress

Changes in the root proteome of Triticosecale grains germinating under osmotic stress

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