Effect of salinity shock on some desert species native to the northern part of Egypt

Migahid, Masarrat M.

doi:10.1006/jare.2002.1041

Cited by 13 publications

(8 citation statements)

References 22 publications

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“…Generally, total free amino acids content in the 2 species was significantly higher in summer than in winter. These results are in accordance with Migahid (2003).…”

Section: Discussionsupporting

confidence: 93%

Ecophysiological responses of Calligonum polygonoides and Artemisia judaicaplants to severe desert aridity

Salama¹,

Sayed²,

EL-GELIL³

2015

Turk J Bot

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The present study, conducted in 2011 and 2012, deals with the response of Calligonum polygonoides and Artemisia judaica to the drought conditions in Wadi El-Assiuty and its tributary Wadi Habib in the middle part of the Eastern Desert of Egypt. Soil and plant samples were collected from 50 stands in the wet (winter) and dry (summer) seasons. In the selected plants chlorophyll (Chl a and b) contents as well as the Chl stability index tended to increase significantly during the summer season. Calcium and magnesium were accumulated in considerable amounts in the studied plants. Amounts of calcium accumulated were higher than those of magnesium. Phosphates appeared in the plants in low amounts and correlated positively with those found in the soil. The studied plants showed an increase in soluble sugars accumulation. Soluble protein content increased significantly during the winter season with a corresponding decrease in free amino acids. It is quite clear that Calligonum polygonoides plants were better adapted to drought conditions prevailing in the area under study than Artemisia judaica. This was judged by the average metabolic potentiality as soluble metabolites (soluble sugars and soluble proteins) are much higher in Calligonum than in Artemisia.

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“…Generally, total free amino acids content in the 2 species was significantly higher in summer than in winter. These results are in accordance with Migahid (2003).…”

Section: Discussionsupporting

confidence: 93%

Ecophysiological responses of Calligonum polygonoides and Artemisia judaicaplants to severe desert aridity

Salama¹,

Sayed²,

EL-GELIL³

2015

Turk J Bot

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show abstract

“…Generally, total free amino acids content, in the studied species, was significantly higher in summer than the data reported for winter. These results are in accordance with what was found by Migahid (2003). The marked differences in concentration of amino acids among species investigated were either due to regionality or seasonality and were attributed to the decline in some amino acids during water, temperature or salt stress (Palfi, 1965;Mohamed, 1988).…”

Section: Discussionsupporting

confidence: 91%

Adaptive Mechanisms in <i>Zilla spinosa</i> and <i>Leptadenia pyrotechnica</i> Plants to Sever Aridity in the Egyptian Deserts

et al. 2016

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In the present study two species were selected based on their highest presence values to study the response to the severe drought conditions in desert: these were Zilla spinosa and Leptadenia pyrotechnica. The results showed that soil water content and organic matter of Wadi El-Assiuty were very low over the study period. The estimated pH values in the soil solution at the different studied stands tended to be slight alkaline. Total soluble salts were generally higher during summer versus winter. The water content in the studied plants increased significantly during summer. The selected species increased their content of chlorophyll a and b in summer. The stability index of chlorophyll a and b was significantly higher in summer than that estimated in winter. Calcium and magnesium were accumulated in considerable amounts. Ca+2 was the main accumulated cation whereas its concentration were higher than magnesium. Z. spinosa accumulated more sulphates in summer than in winter. Phosphates appeared in low amounts in all the investigated plants. In L. pyrotechnica tissue, Na+ concentration correlated negatively with those found in soil during summer. In winter Na+ and SO4 correlated positively and K+ correlated negatively in Z. spinosa. The studied species showed slightly increase in soluble sugars accumulation. Soluble protein content in Z. spinosa and L. pyrotechnica decreased significantly during winter season. Amino acids content was low and varied between the two investigated species. It seemed that the Z. spinosa is better adapted than L. pyrotechnica to drought conditions, prevailing in the area under study. This judgement can be concluded by the average metabolic potentiality in the species, whereas soluble metabolites (soluble sugars and soluble proteins) were relatively much higher than in the case of L. pyrotechnica.

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“…Many studies (e.g. Feng & Cheng, 1998;Williams, 1999;Alcocer et al, 2000;Zou et al, 2002;Migahid, 2003) reveal that the superfluous salts in lake water have done serious damage to the water quality and the health of people and animals, hence limiting efficient utilization of the water resources and jeopardizing the integrity of ecosystems. As lake freshwater in most arid areas is the only water resource on which people, animals and plants rely for existence, it is very important to protect freshwater lakes in arid areas from salinization.…”

Section: Introductionmentioning

confidence: 99%

Physically-based model for studying the salinization of Bosten Lake in China

Zuo

Dou

Chen

et al. 2006

Hydrological Sciences Journal

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Salinization of lakes in arid areas is a common phenomenon with harmful consequences and must be controlled for the better use of lake freshwater and for the conservation of the environment around lakes. Bosten Lake, located in Xinjiang (western China) and the largest inland freshwater lake in China, now experiences salinization. The salinization of Bosten Lake is studied herein by using a physically-based model. After qualitative analysis of lake salinization, the quantitative model is presented that describes the systems of water quantity-water quality-ecology (WQQE) in an integrated way and that simulates the changing processes of lake salinization in the past. On the basis of the WQQE model, an optimal model was also developed to investigate the best strategy for controlling salinization of the lake in the future. The results demonstrated that the developed models can be used to depict the physical process of salinization of Bosten Lake and to provide meaningful information on how to control this salinization. Un modèle à bases physiques pour l'étude de la salinisation du Lac Bosten en ChineRésumé La salinisation des lacs en régions arides est un phénomène courant aux conséquences nuisibles, qui doit être contrôlé dans l'optique d'une meilleure utilisation de l'eau douce des lacs et de la conservation des environnements lacustres. Le Lac Bosten, situé dans le Xinjiang (à l'ouest de la Chine) et constituant le plus grand lac d'eau douce de Chine, subit désormais la salinisation. La salinisation du Lac Bosten est étudiée à l'aide d'un modèle à bases physiques. Après une analyse qualitative de la salinisation lacustre, présentation est faite du modèle quantitatif qui décrit les systèmes quantité d'eauqualité d'eau-écologie (WQQE) d'une manière intégrée et qui simule les processus évolutifs de salinisation lacustre au cours du passé. Grâce au modèle WQQE, un modèle optimal a également été développé afin d'identifier la meilleure stratégie de contrôle de la salinisation du lac pour le futur. Les résultats montrent que les modèles développés peuvent être utilisés pour représenter les processus physiques de salinisation du Lac Bosten et pour produire une information pertinente en vue du contrôle de cette salinisation.

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Effect of salinity shock on some desert species native to the northern part of Egypt

Cited by 13 publications

References 22 publications

Ecophysiological responses of Calligonum polygonoides and Artemisia judaicaplants to severe desert aridity

Ecophysiological responses of Calligonum polygonoides and Artemisia judaicaplants to severe desert aridity

Adaptive Mechanisms in <i>Zilla spinosa</i> and <i>Leptadenia pyrotechnica</i> Plants to Sever Aridity in the Egyptian Deserts

Physically-based model for studying the salinization of Bosten Lake in China

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