Effet Du Stress Salin Sur Le Comportement Biochimique Et Anatomique Chez Deux Variétés De Piment (Capsicum Annuum L.) À Mila /Algérie

Bouassaba, Karima; Chougui, S.

doi:10.19044/esj.2018.v14n15p159

Cited by 6 publications

(11 citation statements)

References 22 publications

(10 reference statements)

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“…The Na + contents in the leaves were higher in the saline treatments than in the controls at 44 days after sowing (Figure 2). Similar results were obtained in sweet pepper (Capsicum annuum L.) [33]. Leaf Na + levels increased significantly with salinity for all sesame varieties (Figure 2).…”

Section: Discussionsupporting

confidence: 82%

“…It may be due to the destruction of chlorophyll precursors, to the conversion of the latter into other pigments or to the reduction in the accumulation of Mg, an integral component of photosynthetic pigments, to the destruction of the fine structure of chloroplasts or instability of the pigment-protein complex [23]. This reduction in chlorophyll may also be linked to the sensitivity of its biosynthesis to NaCl [33].…”

Section: Discussionmentioning

confidence: 99%

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Physiology and adaptation strategy of sesame (Sesamum indicum L.) to salinity

Dangue¹,

Ali²,

Diaw³

et al. 2022

GSC Adv. Res. Rev.

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Salinization is a global environmental problem. It is particularly prevalent in Africa in areas with a low rainfall trend such as the Senegalese groundnut basin where 20% of the land is affected. It reduces global food production by more than 10%. In Senegal, sesame (Sesamum indicum L.) moderately tolerant to drought and salinity is increasingly cultivated. It is an alternative to fight poverty in rural areas and allows the revaluation of salty land. The objective of this work is to evaluate at the early stage of reproduction the effect of salinity on the chlorophyll and ion (Na+ and Cl−) contents of four African varieties of sesame. The experimental device consists of randomized blocks with two factors and three repetitions. The sesame variety factor consists of four modalities (AS09, AS14, AS15 and AS25). The salinity factor or abiotic stress (NaCl) includes three modalities (0 mM, 17 mM and 34 mM). The parameters evaluated are the contents of Na+ and Cl− ions and of chlorophylls (Chl a, Chl b and total Chl). The results showed that the contents of chlorophylls (Chl a, Chl b and Chl) and Cl− and Na+ ions of sesame leaves increased with NaCl at 44 days after sowing. The Cl− contents of sesame leaves are higher than those of Na+ in all treatments. Chlorophyll increased with sesame varieties and salinity. Variety AS15 produced the greatest amounts of chlorophyll. Sesame, an inclusive-type plant, compartmentalizes Cl− and Na+ ions at the leaf level in vacuoles. He developed a tissue tolerance to salinity.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Physiology and adaptation strategy of sesame (Sesamum indicum L.) to salinity

Dangue¹,

Ali²,

Diaw³

et al. 2022

GSC Adv. Res. Rev.

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“…The depressive effect of salinity is more pronounced on chlorophyll a than on chlorophyll b ( [35]; [36]). This is explained by a greater sensitivity of the biosynthesis of chlorophyll a to sodium chloride ( [35]; [37]). The amounts of chlorophyll in peanut variety 73-33 decreased with increasing salinity (Figures 4,5,6).…”

Section: Discussionmentioning

confidence: 99%

“…It can be due to the destruction of the precursors of chlorophyll, to the conversion of the latter to other pigments or to the decrease in the accumulation of Mg, an integral component of photosynthetic pigments, to the destruction of the fine structure of chloroplasts or instability of the pigment-protein complex [41]. This reduction in chlorophyll may also be linked to the sensitivity of its biosynthesis to NaCl [37]. Salinity also induces nutritional disorders causing damage to macromolecules such as chlorophyll due to loss of membrane integrity and photosynthetic activity [39].…”

Section: Discussionmentioning

confidence: 99%

“…Salinity also induces nutritional disorders causing damage to macromolecules such as chlorophyll due to loss of membrane integrity and photosynthetic activity [39]. NaCl also reduces the activity of chlorophyll by inhibiting the synthesis of 5-amino-levulinic acid or by occupying the site of action of nitrogen (N), an essential component of chlorophyll ( [22]; [37]).…”

Section: Discussionmentioning

confidence: 99%

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Effect of salinity on the physiology of peanut variety 73-33 (Arachis hypogaea L.)

Dangue¹,

Sarr²,

Kane³

2021

GSC Biol. and Pharm. Sci.

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Peanut (Arachis hypogaea, L.) is an annual papilionaceous oilseed legume cultivated on nearly 25 million hectares in tropical and temperate zones due to its remarkable plasticity to temperature and water requirements. In Senegal, peanut is produced in rural areas where they are the main source of agricultural income. Variety 73-33 is cultivated in the river valley and the groundnut basin is subject to the influence of salinization affecting four of Senegal's ecogeographic zones. Studies conducted with randomized full-block experimental set-up in the laboratory and under semi-controlled greenhouse conditions have shown the effect of different concentrations of NaCl on the peanut variety 73-33: 0mM; 25mM; 50mM; 100mM; 200mM; 300mM; 400mM; 500mM for germination and 0mM; 25mM; 50mM; 100mM for growth growth and chlorophyll production. The parameters which were measured are: the germination rate (ten days after sowing), the number of nodules, the number of gynophores, the dry biomass and the production of chlorophyll at twenty, forty and seventy-five days after sowing. Germination is significantly negatively affected from 400mM. Twenty days after sowing there is a significant difference between the control and the other treatments for the production of chlorophyll a (Chla) only. Forty days after sowing, the production of chlorophyll a and total chlorophyll shows a very highly significant difference between all the treatments. The dry biomass only shows a significant difference from 100mM. Seventy-five days after sowing, the dry biomass and the number of gynophores are significantly reduced by the salinity from 25mM.

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Salinity stress improves antioxidant potential by modulating physio-biochemical responses in Moringa oleifera Lam.

Azeem

Pirjan

Qasim

et al. 2023

Sci Rep

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Moringa oleifera Lam. is a common edible plant, famous for several nutritional and therapeutic benefits. This study investigates the salt -induced modulations in plant growth, physio-biochemical responses, and antioxidant performance of M. oleifera grown under 0, 50, and 100 mM NaCl concentrations. Results showed that the plant effectively managed moderate salinity (50 mM NaCl) by maintaining succulence, weight ratios, and biomass allocation patterns of both shoot and root with minimal reduction in dry biomass. However, high salinity (100 mM NaCl) remarkably declined all growth parameters. The plant accumulated more Na+ and Cl−, while less K+ under salinity as compared to the control. Consequently, osmotic potentials of both root and leaf decreased under salinity, which was corroborated by the high amount of proline and soluble sugars. Increased level of H2O2 with significantly unchanged membrane fluidity indicating its role in perceiving and managing stress at moderate salinity. In addition, increased activities of superoxide dismutase, and catalase, with increased glutathione and flavonoid contents suggest an integrated participation of both enzymatic and non-enzymatic antioxidant components in regulating ROS. On the other hand, high salinity caused an outburst of ROS indicated by high H2O2, MDA, and electrolyte leakage. As a response, moringa drastically increased the activities of all antioxidant enzymes and contents of antioxidant molecules including ascorbic acid, glutathione, total phenols, and flavonoids with high radical scavenging and reducing power capacities. However, a considerable amount of energy was used in such management resulting in a significant growth reduction at 100 mM NaCl. This study suggests that moringa effectively resisted moderate salinity by modulating physio-biochemical attributes and effectively managing ion toxicity and oxidative stress. Salt stress also enhanced the medicinal potentials of moringa by increasing the contents of antioxidant compounds including ascorbic acid, glutathione, total phenols, and flavonoids and their resulting activities. It can be grown on degraded/ saline lands and biomass of this plant can be used for edible and medicinal purposes, besides providing other benefits in a global climate change scenario.

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Effet Du Stress Salin Sur Le Comportement Biochimique Et Anatomique Chez Deux Variétés De Piment (Capsicum Annuum L.) À Mila /Algérie

Cited by 6 publications

References 22 publications

Physiology and adaptation strategy of sesame (Sesamum indicum L.) to salinity

Physiology and adaptation strategy of sesame (Sesamum indicum L.) to salinity

Effect of salinity on the physiology of peanut variety 73-33 (Arachis hypogaea L.)

Salinity stress improves antioxidant potential by modulating physio-biochemical responses in Moringa oleifera Lam.

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