Mohamed Mahgoub Azooz

• Professore of Plant Physiolgy
• Professor at South Valley University

abstract This study was conducted to identify how to choose the appropriate method that enables the selection of the most suitable faba bean (Vicia faba) cultivar, which if planted in saline soil increased its productivity. The obtained data indicated that the cultivars Giza 843, Misr 1, Misr 3, Nobaria 1 and Wadi 1 germinated and continued seedlin...

The utilization of tungsten in traffic, smelting, mining, and other industrial applications allows its’ accumulation in the environment ecosystems. The present study included using a soluble form of tungsten as a tungstate at different levels (0, 1, 5, 10, 50, and 100 mg L⁻¹) as a water contaminant. The germinating seeds experienced tungstate at 1-...

The present study investigated the possible protective role of hemin (75 µM) on okra (Abelmoschus esculentus L.) plants grown under diluted seawater (seawater/normal water) in plastic bags on loam soil and compost (1:1). Four levels of seawater were prepared by diluting seawater to give 1.8, 3.6, 5.4 and 7.2 dsm-1. Okra plants were irrigated with t...

The phyto-impact of tungstate is not frequently studied like other heavy metals especially in the sight of continuous accumulation of tungstate in the agriculture soils and water. Thus, the present study was aimed to investigate the supplementation of various tungstate concentrations (0, 1, 5, 10, 50, and 100) to germination water (mg L⁻¹) or clay...

Capabilities of molecular techniques to evaluate natural and induced genetic variation were investigated using three different plant species (Solanum nigrum L., Vicia faba L., Moringa oleifera Lam.). When characterization of three Solanum taxa (S. nigrum var. nigrum, S. nigrum var. incisum, and S. sinaicum Boiss.) was carried out using morphologica...

Abstract THIS WORK was undertaken to evaluate the effect of ascorbic acid (AsA) and potassium (K) on some morpho-physiological parameters of two Vicia faba L cultivars (Giza 843 and Giza 716) grown in nutrient solutions containing different concentrations of NaCl (50, 100 and 150mM NaCl) and K (5, 10 and 15mM) for two weeks. In general, under salin...

Background and objective: Several medicinal plants are reported as having allelochemicals potentials and favorable results have been obtained in this regard. The present investigation aimed to evaluate the effect of different concentrations of leaf aqueous extract of two medicinal plants, Artrmisia monosperma and Thymus vulgaris on growth criteria...

Salinity is one of the major environmental factors that severely affects agricultural productivity. A large amount of land is unavailable for cultivation because of this salinity problem. Much research has been done to find out methods by which saline soils can be improved to ensure global food security. Fruitful results of this research came with...

Aluminum is one of the most abundant metals in the Earth’s soil. Many plants are sensitive to micromolar concentrations of this metal. Most of the aluminum in soil is bound by ligands and thus occur in nonphytotoxic forms such as aluminosilicates and aluminum precipitates. Aluminum toxicity exists in acidic soils and low pH leads to solubilization,...

Environmental pollution is one the major problems that affects biodiversity, ecosystems, and human health worldwide by contaminating soil and water. This issue cannot be resolved through conventional tools and traditional strategies. The in-depth understanding of biotechnological interventions with the prospect to upgrade the phytoremediation poten...

Environmental contamination by hazardous heavy metals (HMs) is increasing worldwide and poses a serious threat to plant production and human health. Subjection of plants to HM stress lead to a variety of morphological, physiological, and biochemical alterations or even death of plants. The prime drawback to developing HM stress-tolerant plants is t...

The family Leguminosae forms one of the most important botanical groups, contributing significantly to human nutritional, financial, environmental and medicinal needs. The growth and development of these plants under optimum environmental conditions is highly desirable for the efficient use of this natural resource. However, a number of extrinsic f...

Legumes, owing to their contribution to the dietary, agricultural, medicinal and environmental sectors, are domesticated in a greater part of the world. Better understanding of their benefits has led to a greater demand for these plants and plant-based products. However, the production yield has not been able to effectively meet the demands of the...

Legumes are ranked third in world crop production, but abiotic stresses prove to be a major constraint in their production. The approach with greatest potential for improving stress tolerance in legumes is the use of biotechnology applications, especially involving the ?omics?. However, this requires detailed knowledge of the effects that various a...

Leguminous crops have been found to contribute almost 27% of the world's primary crop production. However, due to environmental fluctuations, legumes are often exposed to different environmental stresses, leading to problems with growth and development, and ultimately, decreased yield. This timely review explains the transcriptomics, proteomics, ge...

Jasmonic acid (JA) critically participates in modulating plant responses to salt stress. Here, the protective role of JA against dilute seawater stress was investigated for Hassawi okra seedlings in pot experiments under controlled growth conditions. Seeds were soaked in 50 µM JA. The seedlings were irrigated with different dilutions of seawater (0...

Jasmonic acid (JA) critically participates in modulating plant responses to salt stress. Here, the protective role of JA against dilute seawater stress was investigated for Hassawi okra seedlings in pot experiments under controlled growth conditions. Seeds were soaked in 50 lM JA. The seedlings were irrigated with different dilutions of seawater (0...

We demonstrate a Q-switched fibre laser operating at 1949.0 nm, which is based on a nonlinear polarization rotation (NPR) technique. It uses a 2 m long commercial thulium-doped fibre and a 15 m long homemade thulium–ytterbium co-doped fibre as active media. They are pumped respectively by 800 nm single-mode and 905 nm multimode radiations. A stable...

Glutathione is an essential component of the defense system in plants and human beings exposed to various environmental stresses. The protection mechanism involves metal sequestration and scavenging of reactive oxygen species by glutathione in plants facing environmental stress. It is a low molecular weight thiol peptide existing in both oxidized (...

Abiotic stress drastically limits agricultural crop productivity worldwide. Climate change threatens the sustainable agriculture with its rapid and unpredictable effects, making it difficult for agriculturists and farmers to respond to the challenges cropping up from environmental stresses. In light of population growth and climate changes, investm...

Brassica is considered as an important crop all over the world owing to its economically important products. B.juncea and B.napus are cultivated as oilseed crops globally. Heavy metal (HM) stress is one of the abiotic stresses that limit plant growth and development. Root and shoot lengths and fresh and dry weights have been observed to act as accu...

For several decades a wide range of studies have focused on plant responses to reactive oxygen species. ROS are highly reactive molecules that can interact with DNA, proteins, RNA and numerous other metabolites in living organisms. Exceeding the production of ROS in plant cells causes oxidative stress, where the capacity of cellular defenses to rem...

Crop production is affected by a number of abiotic factors including temperature, salinity, drought, pesticides, pH of the soil, and heavy metals as they affect all metabolic activities of the plant. When the plant is unable to grow normally, it is said to be affected by water deficit. The mechanism involved in combating water stress is not clear i...

Salt stress is the major limiting factor in agriculture and portraits a major challenge to food security. The adverse effect of salt stress is expressed on whole plant levels. Plants have acquired various processes that functions to balance cellular hyperosmolarity and ion disequilibrium in an effort to combat salt stress. These processes occur due...

Increasing population growth rate, shortage of good arable land, use of low quality water coupled with intensive cropping system are forcing crop production into more marginal environments and thus, limiting the adaptation and productivity of food crops. In Pakistan, considerable information is available regarding nitrogen (N) requirement of plants...

Environmental conditions and changes, irrespective of source, cause a variety of stresses, one of the most prevalent of which is salt stress. Excess amount of salt in the soil adversely affects plant growth and development, and impairs production. Nearly 20% of the world's cultivated area and nearly half of the world's irrigated lands are affected...

Current trends in population growth hint that global food production is unlikely to gratify future demands under predicted climate change scenarios unless the rates of crop improvement are accelerated. Crop production faces numerous challenges, due to changing environmental conditions and evolving needs for new plant-derived materials. These challe...

Brassica is considered as an important crop all over the world owing to its economically important products. B.juncea and B.napus are cultivated as oilseed crops globally. Heavy metal (HM) stress is one of the abiotic stresses that limit plant growth and development. Root and shoot lengths and fresh and dry weights have been observed to act as accu...

Cited By (since 1996):2, Export Date: 18 October 2014

Edible vaccine technology represents an alternative to fermentation based vaccine production system. Transgenic plants are used for the production of plant derived specific vaccines with native immunogenic properties stimulating both humoral and mucosal immune responses. Keeping in view the practical need of new technology for production and delive...

Seed priming with vitamins is an efficient method for increasing seedlings growth and productivity under stressful conditions. This study aimed to investigate the priming of broad bean (Vicia faba L.) seeds using 100 mg L -1 ascorbic acid and nicotinamide and to study their interactions on growth and some physiological parameters of plant under sal...

Plant tissue culture has emerged as a powerful and cost-effective tool for the crop improvement. Tissue culture is alternatively called cell, tissue and organ culture through in vitro condition. It can be employed for large scale propagation of disease free clones and gene pool conservation. Agricultural industry has applied immensely in vitro prop...

Heavy metal stress is increasing at an alarming rate in agricultural soils through out the world. Heavy metal (Cd, Cu, Zn, Ni, Co, Cr, Pb and As) toxicity have been reported to be responsible for the reduced crop production. Among the heavy metals arsenic (As) is non-essential and toxic to both plants and animals. As can exist in environment in the...

Bio-fertilizers are cost effective, ecofriendly and renewable source of plant nutrients to supplement chemical fertilizers in sustainable agricultural system. Bio-fertilizers are preparations containing living cells of efficient nitrogen fixing, P-solubilizing/mobilizing or cellulose decomposing microorganisms, which when applied to seed or inocula...

The crops worldwide are generally affected by the abiotic stresses like salinity, drought, extreme temperatures, etc., resulting in limitation on their productivity. However certain crop species have an extraordinary strength to survive in most difficult circumstances. Rice crop (Oryza sativa) is the staple food in most countries of the world. This...

Wastewater remediation by microalgae is an eco-friendly process with no secondary pollution as long as the biomass produced is reused and allows efficient nutrient recycling. This study was undertaken to evaluate the remediation of wastewater by the green alga Chlorella vulgaris and the potential of these alga (biomass) to produce sustainable biofu...

Abiotic stress tolerance in plants is gaining importance day by day. Different techniques are being employed to develop salt tolerant plants that directly or indirectly combat global food problems. Advanced comprehension of stress signal perception and transduction of associated molecular networks is now possible with the development in functional...

Soil salinity is one of the most important problems worldwide, which has decreased crop production to a great extent. The major or deleterious effects of salinity on plant growth and development are associated with low osmotic potential of soil solution, nutritional imbalance etc. Consequently these can ultimately lead to plant death because of gro...

Salt stress is one of the major abiotic stresses limiting crop production especially in arid and semi-arid regions. It is reported that about 7 % of the total earths land and 20 % of the total arable area are affected by high salt contents. Reclamation of salt affected soils is necessary as the salt is engulfing the cultivable land day by day. The...

In this study, changes in growth, chlorophyll pigments, proline, hydrogen peroxide (H2O2) and malondialdehyde (MDA) contents, and antioxidative enzyme activities were investigated in the seedlings of four different cultivars (cvs) of mustard [Brassica juncea (L.) Czern. & Coss.], i.e. Varuna, RH-30, Rohini, and Vaibhave under potassium (K) nutritio...

The effect of crude oil contaminated soil at various sublethal concentrations (1%, 2%, and 3% v/w) on the metabolism of Jojoba (Simmodsia chinensis) seedlings was studied. The results showed that crude oil induced environmental stress in the seedlings. This is indicated by the increase in total carbohydrates, total proteins, amino acids and proline...

Environmental changes, irrespective of source, cause a variety of stresses in plants. These stresses affect the growth and development and trigger a series of morphological, physiological, biochemical and molecular changes in plants. Abiotic stress is the primary cause of crop loss worldwide. The most challenging job before the plant biologists is...

A pot experiment was carried out to determine the effect of crude oil on Jojoba (Simmodsia chinensis).The soil was treated with different levels of crude oil: 0% (control), 1, 2, 3 and 4% v/w. Seed germination and growth parameters like plant height, root length, fresh and dry weights of shoots and roots, number of leaves and leaf area. The mean va...

The biphasic effects of Cu +2 on the growth and some biochemical parameters of Hassawi wheat were studied. Hassawi wheat seeds were grown in various copper (Cu +2) levels (0, 2, 10, 20, 40, 80 and 100 mM) for 30 days. Cu +2 was applied on soil as Cu 2 SO 4 .5H 2 O. The results showed that Cu +2 concentration at 2 mM level promotes the growth and te...

A variety of environmental factors are known to modify the toxicity of heavy metals on algae. This study was undertaken to examine the impact of some inorganic and organic complexes on the toxicity of copper using the isolated algal species (Chlorella vulgaris). The data illustrate that the amount of available forms of copper (copper free ions) gra...

Salt stress is one of the major global problem rendering vast area of land unsuitable for cultivation. Attempts are therefore directed to screen for salt-tolerant plants for the reclamation of the wasteland. The present study was an attempt to search for the salt tolerance potential of an important endangered medicinal plant Psoralea corylifolia, w...

Exogenously applied salicylic acid has been shown to be an essential signal molecule involved in both local defense reactions and induction of systemic resistance response of plants after salt stress. Our study was aimed at evaluating the foliar spray with different levels (0.0, 0.5 and 1.0 mM) of salicylic acid (SA) on broad bean (Vicia faba L) se...

Soil contamination with heavy metals has become a worldwide problem, leading to a reduction of plant growth and productivity. The objective of this study was carried out to compare the effect of different levels of zinc (Zn 2+) or lead (Pb 2+)and their interactions on growth and physiological changes of Hassawi okra seedlings. These seedlings were...

The present study was designed to evaluate the influence of salicylic acid (50 ppm) or/and heat shock on growth, some metabolic activities and protein patterns of Hassawi wheat (Triticum aestivum L. cv. Hassawi) plant. The experimental plant was subjected to three drought stress levels, 100, 60 and 30% field capacity. The results revealed that, the...

This experiment assessed the effect of partial physical desiccation on plant regeneration efficiency in scutellum-derived embryogenic calluses of rice (Oryza sativa L.) variety Super basmati. A number of callusing cultures were developed, and efficient callus induction was observed on MS (Murashige and Skoog) basal medium supplemented with 2.0mg/L...

The experiments were conducted in earthen pots lined with polythene sheet to find out the effect of different concentrations of cobalt (0, 50, 100, 150, 200 and 250 mg/kg soil) on various morphological parameters, photosynthetic pigment contents and antioxidant enzyme activities on greengram (Vigna radiata (L.) Wilczek). Plants were watered to fiel...

In the present study effect of sodium chloride and calcium chloride on the proline metabolism of Withania somnifera plants was studied. The plants were treated with 100 mM NaCl, 5 mM CaCl 2 , 100 mM NaCl with 5 mM CaCl 2 solutions. Ground water was used for irrigation to control plants. Plants were harvested randomly on 30 and 50 days after sowing...

The effect of salinity stress alone and with foliar application with 100 ppm riboflavin (vit. B₂) on seedling growth, organic solutes accumulation, ion uptake and the activity of antioxidant enzymes in Hibiscus sabdariffa L. was investigated. Analysis of data (ANOVA) revealed that, growth of Hibiscus sabdariffa L. seedlings was reduced w...

In the present investigation, different plant growth promoters and retardant were used to determine the anatomical characteristics of Catharanthus roseus. The plant growth promoters used were gibberellic acid (GA ) and Pseudomonas fluorescens elicitors (PF Elicitors) and retardant was paclobutrazol (PBZ). The 3 treatments were given by soil drenchi...

In the present investigation, experiments were conducted to study the effects of different sodium salts viz., sodium chloride (NaCl), sodium sulphate (Na2SO4) and sodium carbonate (Na2CO3) on morphological parameters (germination percentage, root and shoot length, dry weight of root and shoot) and photosynthetic pigment contents (chlorophyll 'a', c...

In the present study, the effect of Triadimefon and Hexaconazole on the enzymatic antioxidans like Superoxide dismutase and ascorbate perxidase of Manihot esculenta Crantz during the growth and maturation period was analysed. One litre of 20 mg L triadimefon and 15mg L hexaconazole solution per plant was used -1 -1 for the treatment and control was...

A pot culture experiment was conducted to estimate the effect of cobalt (0, 50, 100, 150, 200 and 250 mg kg-1soil) on morphological parameters, drymatter production, yield and yield components of soybean. Pot culture experiments were conducted during January 2006 to April 2006. Periodical observations were made to record the various morphological p...

For the past several years, several techniques of physiology have been applied to overcome the water deficit and drought stress in field crops. However little information is gained on the response to PBZ and ABA treatments under drought stress and their ameliorative actions on Sesamum. So a study was carried out to understand the effect of PBZ and...

In the present investigation, an attempt was made to study the effect of different triazole compounds viz., triadimefon, paclobutrazol and propiconazole on photosynthetic characteristics of Amorphophallus campanulatus. The results indicated that in Amorphophallus campanulatus the triazole compounds increased the total chlorophyll and carotenoid con...

Different responses of three maize (Zea mays L.) cultivars SC 129, SC 13 and SC 155 (differently susceptible to salinity stress) in pot experiment were investigated. The rate of oxidative injury on growth, lipid peroxidation and activities of antioxidant enzymes in relation to NaCl-stress were tested. The cv. SC 129 tolerated NaCl up to 100 mM and...

The differential responses of two faba bean (Vicia faba L.) local Egyptian genotypes to salinity (0 or 140 mM NaCl) and seed priming with 0.2 mM salicylic acid (SA) were studied. Salinity caused no significant changes in dry weight and tissue water content of genotype 115, whereas they were significantly reduced in genotype 125. Genotype 115 exhibi...

Abiotic stresses are major adverse environmental factors determining plant productivity. Under these stress conditions, reactive oxygen species (ROS) derived from molecular oxygen can accumulate in leaves, resulting in the oxidation of cellular components including proteins, chlorophyll, lipids, nucleic acids, carbohydrates etc. Sublethal amounts o...

This research was carried out to study the inductive role of vit. C and its mode of application in mitigating the detrimental effects of irrigation with diluted (10, 20 and 30%) seawater on Vicia faba L. cv. Hassawi plants. The results showed that, seawater level at 10% exhibited insignificant changes, while the higher levels impaired growth by red...

In the present investigation, changes in individual alkaloid profiles were studied in Catharanthus roseus (L.) G. Don. plants under treatment with Pseudomonas fluorescens. The Pseudomonas fluorescens treatments were given by soil drenching on 38, 53, 68 and 83 days after planting (DAP) by soil drenching. The plants were taken randomly on 45, 60, 75...

Abstract: The present study was conducted to find out the antibiogram of different extracts of two varieties of Catharanthus roseus (L.) G. Don. "rosea" and "alba". The plant parts, leaves, stems, roots and flowers were separately tested for their antibiogram by using different solvents (methanol, acetone and ethyl acetate). Among the three solvent...

The main objectives of this study wre to asses the effect of Triadimefon and Hexaconazole on the non-enzymatic antioxidant potentials of Manihot esculenta Crantz during the growth and maturation period. One litre of 20 mg L triadimefon and 15mg L hexaconazole solution per plant was used for the treatment -1 -1 and control was treated with one litre...

Germination studies were conducted in ragi (Eleusine coracana L.) and paddy (Oryza sativa L.) inorder to find out the impact of soil cobalt level on germination and seedling vigour. The seeds of ragi and paddy were germinated with six concentrations of cobalt chloride solution ranging from 5-100 mg/l in hydroponic condition upto 8 days. The germina...

In this study we tried to explore the changes occurring in antioxidant enzymes Ascorbate peroxidase (APX, EC: 1.11.1.11), Catalase (CAT, EC: 1.11.1.6) and Superoxide dismutase (SOD, EC: 1.15.1.1) of two Coleus speceis (Plectranthus aromaticus Benth and Plectranthus vettiveroides K.C. Jacob.) on treatments with propiconazole and hexaconazole. The tr...

An investigation was carried out to study the effect of Triadimefon and Hexaconazole on th e photosynthetic pigment characteristics of tapioca (Manihot esculenta Crantz) during the growth and maturation period. One litre of 20 mg L-1 triadimefon and 15mg L-1 hexaconazole solution per plant was used for the treatment and control was treated with one...

The effect of different plant growth regulators (PGR) and fungicide treatments on the growth characteristics of Catharanthus roseus (L.) G. Don. (Madagascar periwinkle, Family: Apocynaceae) was investigated in the present study. The PGR used were paclobutrazol (PBZ), gibberellic acid (GA ) an d 3 Pseudomonas fluorescens elicitors (PF Elicitors) by...

A pot culture experiment was conducted to estimate the changes occurring in antioxidants like ascorbic acid, α-tocopherol and total phenols of Plectranthus aromaticus and Plectranthus vettiveroids on treatments with propiconazole and hexaconazole. The treatments were given as soil drenching 30, 50 and 70 days after planting (DAP). The plants were u...

The effect of cobalt treatment on Antioxidant enzyme activities of Vigna radiata (L.) Wilczek, were studied. The plants were raised in earthen pots containing soils amended with different concentrations of cobalt (50, 100, 150, 200 and 250 mg kḡ ). Biochemicals like reducing, non-reducing, total sugar, starch, amino acid 1

The present investigation was executed with an objective to study the effects of Co stress in Arachis hypogaea L. with special emphasis on antioxidant enzymes activities which are the defense mechanism to any type of abiotic stress. In this we have analysed the effect of cobalt (Co) stress on antioxidant enzyme activities (catalase, peroxidase and...

A study was carried out to understand the mineral constituent variations under cobalt treatment in Vigna mungo (L.) Hepper. The experiments were conducted in earthen pots and lined the inner surface with polythene sheet. Each pot contains 3 kg of air dried soil. Blackgram plants were raised in these pots containing soils amended with different conc...

A gradual increase in NaCl concentration in the growth medium was used as a strategy to adapt sorghum plants (Sorghum bicolor L.) to relatively high concentrations of NaCl. Over a period of 15 days, a low percentage (22.2%) of sorghum seeds germinated in 200 mM NaCl, but most of the seedlings obtained (85.8%) died. On the other hand, plants subject...

The salt tolerance of three sorghum (Sorghum bicolor L.) cultivars (Dorado, Hagen Shandawil and Giza 113) and their responses to shoot spraying with 25 ppm IAA were studied. Salinity stress induced substantial differences between the three sorghum cultivars in the leaf area, dry mass, relative water content and tolerance index of the leaves. Dorado...

The physiological response of Eucalyptus rostrata due to exposure to heavy metal air pollutants was investigated. The heavy metals Cu, Cd, Fe, and Pb were applied to the above ground parts of the plants, under greenhouse conditions. The metal contents were proportional to the metal concentration in the sprayed solutions. Increasing sprayed metal co...

Seeds of Citrus reticulata were germinated efficiently when they were sown directly after their extraction from fruits harvested in January, and incubated at constant temperature (25 °C). Seed drying decreased both the percentage of seed germination and the number of seedling per seed. Germination of seeds was better on Murashige and Skoog (MS) med...