
M. M. F. MansourAin Shams University · Department of Botany
M. M. F. Mansour
PhD
Advising and doing research. Editorial board member in journals published by Springer Nature, Frontiers, and Elsevier
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80
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Introduction
Mohamed Magdy F. Mansour, Professor, Ain Shams University, Egypt. Received his Ph.D. from the University of Minnesota, USA. His area of expertise is abiotic stresses at molecular, cellular, and whole plant levels. He is among the list of the World’s Top 2% Scientists Released by Stanford University, USA, 2020-present. He serves as a referee for many international journals. He is the holder of several competitive research projects. Invited speaker and session chair at international conferences.
Additional affiliations
Education
January 1984 - July 1990
Publications
Publications (80)
Improving the productivity of medicinal and aromatic species via eco-friendly approaches is imperative worldwide because of their therapeutic impacts. Biostimulants have been recognized among the best cultural practices in the last few decades. Among them, bee honey (BH) and ginger extract (GE) are new sources of multifunctional biostimulants that...
As a type of abiotic stress, drought limits plant growth and productivity. The increased demand for the valuable essential oil extracted from geranium (Pelargonium graveolens L.) is mainly regulated by plant growth, which is adversely affected by drought. Melatonin (MT) has been used to enhance plant growth under various abiotic stresses, although...
Background
The salinity threat represents an environmental challenge that drastically affects plant growth and yield. Besides salinity stress, the escalating world population will greatly influence the world’s food security in the future. Therefore, searching for effective strategies to improve crop salinity resilience and sustain agricultural prod...
To enhance salt tolerance in crop plants, it is crucial to gain a thorough comprehension of the molecular mechanisms at play. Various genes are involved in salt tolerance, encompassing those responsible for signaling, ion transport, transcription factors, phytohormones, and the elimination of reactive oxygen species (ROS). It is imperative to delve...
As abiotic stress, drought limits plant growth and minimizes productivity. The increased request for valuable essential oil extracted from geranium (Pelargonium graveolens L.) is mainly associated with plant growth, which is adversely affected by drought. Melatonin (MT) has been used to enhance plant growth under abiotic stress, however, its impact...
Salt stress is a major constraint to global food security and will become more prevalent in the coming decades due to climate change. Exposure to salt stress triggers altered molecular and functional responses resulting in adverse effects on growth, development, and productivity in plants. Plants perceive the stimuli from the surrounding environmen...
About 20% of all irrigated land is adversely affected by salinity hazards and therefore understanding plant defense mechanisms against salinity will have great impact on plant productivity. In the last decades, comprehension of salinity resistance at molecular level has been achieved through the identification of key genes encoding biomarker protei...
Abstract
Key message An overview is presented of recent advances in our knowledge of candidate proteins that regulate vari�ous physiological and biochemical processes underpinning plant adaptation to saline conditions.
Abstract Salt stress is one of the environmental constraints that restrict plant distribution, growth and yield in many parts
of t...
Main conclusion
An overview is presented of recent advances in our knowledge of responses and mechanisms rendering adaptation to saline conditions in sorghum. Different strategies deployed to enhance salinity stress tolerance in sorghum are also pointed out.
AbstractSalinity stress is a growing problem worldwide. Sorghum is the fifth key crop among...
Metal pollution nowadays has become one of the most serious environmental challenges. Unfortunately, heavy metals are not biodegradable. Plants evolve different strategies to cope with metal toxicity or to maintain the level of essential metals within the physiological range. Phytoremediation is a special strategy used to clean up toxic metals from...
Abiotic stresses are major threats influencing crop growth and production globally. Abiotic stresses can cause several cellular dysfunctions, and some of them are beneficial and required for stress tolerance enhancement. Compatible solute accumulation is one of these changes, and among them proline (Pro) overproduction is a physiological response c...
Salinity stress is a major environmental stress that drastically affects plant growth, development and yield all over the world. Plants therefore evolve constitutive and/or inducible strategies to overcome the adverse impacts of salt stress. The plasma membrane (PM) is one of these key strategies that plays pivotal role in plant response to saline...
The PM is believed to be one facet of the cellular mechanisms involved in adaptation to saline conditions. Alterations in the PM components in response to salinity are therefore anticipated to contribute to plant salt tolerance. The review provides a comprehensive overview of the recent findings describing the crucial roles of the PM components in...
Salt stress is one of the environmental threats that have devastating impacts on plant distribution, growth and production. Different plants are believed to have salt tolerance mechanisms that occur at the cellular level. One facet of the cellular mechanisms of adaptation to salinity stress is to accumulate either inorganic and/or organic solutes....
Salt stress is a major environmental threat influencing crop growth and yield. The plasma membrane (PM)isbelievedtobeonefacetofthecellularmechanismsof salt adaptation. Choline priming has been reported to enhance salt tolerance of the sensitive wheat cultivar used in this work. The study was, therefore, undertaken to examine whether changes in the P...
There is evidence that the plasma membrane (PM) permeability alterations might be involved in plant salt tolerance. This review presents several lines of evidence demonstrating that PM permeability is correlated with salt tolerance in plants. PM injury and hence changes in permeability in salt sensitive plants is brought about by ionic effects as w...
Seedlings of salt sensitive cultivar of wheat were grown in Hoagland solution supplemented with 150 mM NaCI for 2ld following presoaking of caryopses in various polyamines (2.5 mM Putrescine, 5 mM speromidine, 2.5 mM spermine). Changes in relative growth, mineral content of root and shoot, polyamines, ethylene and proline level of shoot were determ...
Salinity is a severe threat to agricultural production of over 80 million ha arable land area globally, especially in irrigated arid and semiarid regions. Understanding how plants cope with salt stress is therefore imperative. As the glycophytes and halophytes have salt tolerance mechanisms occur at the cellular level, understanding cellular mechan...
Salinity‐induced oxidative stress results in the reactive oxygen species (ROS) generation. ROS impair the cellular functions due to their oxidative reactions with membrane lipids and proteins, nucleic acids, proteins as well as enzyme inactivation, and eventually leads to cell death. Many studies have been shown that seed priming is a shotgun appro...
More than one third of the world's irrigated lands are affected by salinity, which has great impact on plant growth and yield worldwide. Proline accumulation under salt stress has been indicated to correlate with salt tolerance. Exogenous application as well as genetic engineering of metabolic pathways involved in the metabolism of proline has been...
Salt stress is one of the environmental threats that have devastating impacts on plant distribution, growth and production. Different plants are believed to have salt tolerance mechanisms that occur at the cellular level. One facet of the cellular mechanisms of adaptation to salinity stress is to accumulate either inorganic and/or organic solutes....
The study was undertaken to answer the question of whether 24- epibrassinolide has the ability to protect the plasma membrane against salt stress. Onion inner epidermal cells were exposed to 150 mMNaCl for 3h. Different protocols of 24-epibrassinolide, and three concentrations were studied (0, 1, 3 µM). NaCl increased plasma membrane permeability,...
Salinity stress is one of the most serious environmental factors limiting plant growth and productivity in large areas around the world. Priming approach was adopted to study the effect of glycinebetaine (GB) on enhancing salt tolerance of sensitive wheat cultivar (Gomeza 7). The caryopsis were primed in different concentrations of GB (25, 50, 100...
Salt stress is a major environmental threat influencing crop growth and yield. The plasma membrane (PM) is believed to be one facet of the cellular mechanisms of salt adaptation. Choline priming has been reported to enhance salt tolerance of the sensitive wheat cultivar used in this work. The study was, therefore, undertaken to examine whether chan...
The PM is believed to be one facet of the cellular mechanisms involved in adaptation to saline conditions. Alterations in the PM components in response to salinity are therefore anticipated to contribute to plant salt tolerance. The review provides a comprehensive overview of the recent findings describing the crucial roles of the PM components in...
Salt stress represents one of the environmental challenges that drastically affect plant growth and yield. Evidence suggests that glycophytes and halophytes have a salt tolerance mechanisms working at the cellular level, and the plasma membrane (PM) is believed to be one facet of the cellular mechanisms. The responses of the PM transport proteins t...
There is evidence that the plasma membrane (PM) permeability alterations might be involved in plant salt tolerance. This review presents several lines of evidence demonstrating that PM permeability is correlated with salt tolerance in plants. PM injury and hence changes in permeability in salt sensitive plants is brought about by ionic effects as w...
Heavy metals are defined as group of elements that have specific weights higher than about 5 g/cm 3 . Iron, Mn, Mo, Ni, Zn and Cu are essential micronutrients that required for normal growth and metabolic processes in plants (Vangronsveld and Clijsters 1994). Cd, Pb, Cr and Hg are nonessential and highly toxic for plants (Devi and Prasad 1998, Seba...
Background: Heavy metals are major environmental pollutant when they present in high concentration in soil and have toxic effects on growth and development of plants. Industrial activities result in heavy metal pollution of large areas of land, which greatly affects natural vegetation. Understanding the mechanism of how plants combat heavy metals a...
Seed priming approach was adopted to modulate salt tolerance of wheat sensitive cultivar under saline environment. Caryopses of wheat salt sensitive cultivar (Triticum aestivum L.) were primed in different concentrations of choline chloride (CC, 0, 5, 10 mM) for 24 h at room temperature. The caryopses were then germinated in sand culture for 10 d,...
Seed priming approach was adopted to modulate salt tolerance of wheat sensitive cultivar under saline environment. Caryopses of wheat salt sensitive cultivar (Triticum aestivum L.) were primed in different concentrations of choline chloride (CC, 0, 5, 10 mM) for 24 h at room temperature. The caryopses were then germinated in sand culture for 10 d,...
Two contrasting maize (Zea mays L.) cultivars, i.e., Giza2 (salt tolerant) and Trihybrid 321 (salt sensitive), were grown hydroponically to study NaCl effect
(100mM) on root plasma membrane (PM) lipid and protein alterations. The PM total sterols of Trihybrid 321 were decreased
while that of Giza2 was increased in response to salt. Salt imposition...
Abstract Two contrasting maize (Zea mays L.) cul- tivars, i.e., Giza 2 (salt tolerant) and Trihybrid 321 (salt sensitive), were grown hydroponically to study NaCl effect (100 mM) on root plasma membrane (PM) lipid and protein alterations. The PM total sterols of Tri- hybrid 321 were decreased while that of Giza 2 was increased in response to salt....
Water permeability and cytoplasmic viscosity and streaming were investigated in seedlings of two Hordeum vulgare cultivars differing in salt tolerance. Six-day-old seedlings were grown for 4 additional days in Hoagland solution with and without 100 mM NaCl added.
Observations and measurements were made in subepidermal cells of the coleoptile using...
A highly enriched plasma membrane traction was isolated by two phase partitioning from wheat roots (Triticum aestivum L. cv. Vivant) grown with and without 100 mM NaCl. The lipids of the plasma membrane fraction were extracted and characterised. Phosphatidylcholine and phosphatidylethanolamine were the major phospholipids with lesser amounts of pho...
Two Zea mays cultivars, salt sensitive Trihybrid 321 and salt tolerant Giza 2, were studied, namely their adaptation to NaCl imposition at cell and whole plant level. Changes in growth and mineral content of roots and shoots, glycinebetaine (GB) and free proline (Pro) levels of shoots, plasma membrane permeability and solute potential (ø s) of leaf...
Glycophytes and halophytes are believed to have salt tolerance mechanisms that occur at the cellular level. One facet of the cellular mechanisms concerns the elements of the protoplasm. Variations in the response of plasma membrane permeability in salt sensitive and tolerant genotypes to salinity are explained by differences in composition and/or s...
Evidence indicates that plant salt tolerance operates at a cellular level. Commonly proposed cellular mechanisms include ion sequestration in vacuoles or ion exclusion at plasma membranes. Plasma membrane ATPase and vacuolar ATPase and pyrophosphatase are proton pumps that provide an energy source for transport of ions across the plasma membrane an...
Abstract
There is evidence that the plasma membrane (PM) permeability alterations might be involved in plant salt tolerance. This review presents several lines of evidence demonstrating that PM permeability is correlated with salt tolerance in plants. PM injury and hence changes in permeability in salt sensitive plants is brought about by ionic eff...
Seedlings of salt sensitive cultivar of wheat were grown in Hoagland solution supplemented with 150 mM NaCl for 21d following presoaking of caryopses in various polyamines (2.5 mM Putrescine, 5 mM speromidine, 2.5 mM spermine). Changes in relative growth, mineral content of root and shoot, polyamines, ethylene and proline level of shoot were determ...
A number of nitrogen containing compounds (NCC) accumulate in plants exposed to salinity stress. The most frequently accumulating NCC include amino acids, amids, imino acids, proteins, quarternary ammonium compounds (QAC) and polyamines. The specific NCC that accumulate in saline environment vary with the plant species. Osmotic adjustment, protecti...
Wheat seedlings of a salt tolerant cultivar were grown hydroponically in presence and absence of 100 mM NaCl. Roots were harvested, and the plasma membrane (PM) fraction was purified. PM ATPase required a divalent cations for activity (Mg > Mn > Ca > Co > Zn > Ni > Cu), and it was further stimulated by monovalent cations (K > Rb > NH4 > Li > cholin...
Twelve-d-old seedlings of two genotypes of Triticum aestivum L. differing in drought resistance, cv. Sakha 61, (SA, moderately drought sensitive) and (cv. Sahil 1 SH, drought resistant) were exposed for 7 d water stress. This was done by increasing the concentration of PEG 6000 gradually, in the nutrient solution which led to drought acclimation. T...
The influence of different concentrations (0.01,0.1,1,10, 50 mM) of putrescine (Put), spermidine (Spd) or spermine (Spm) in counteracting NaCl-induced cellular alterations of onion bulb inner epidermis was investigated. Interactions between these polyamines and NaCl were studied in different treatment regimes. Analysis of plasma membrane (PM) perme...
Winter wheat seedlings were grown in Hoagland nutrient solution with or without 100 mmol/L NaCl added. Plasma membranes from root cells were prepared by aqueous polymer two phase partitioning and the stimulation of plasma membrane ATPase activity by Mg2+ and Ca2+ was investigated. The enzyme was activated by Mg2+ or Ca2+ and Mg2+-ATPase was further...
To test the hypothesis that glycinebetaine (GB) or proline (Pro) may have a specific effect on the plasma membrane under salt stress, Allium cepa bulb scale inner epidermal cells were exposed for 3 h to 150 mM NaCl before or after GB or Pro treatments at different regimes. Two concentrations of GB or Pro were applied (50 or 100 mM). Plasma membrane...
Winter wheat seedlings were grown in Hoagland nutrient solution with or without 100 mmol/L NaCl added. Plasma membranes from root cells were prepared by a~ueous po~mer two phase partitioning and the stimulation of plasma membrane ATPase activity by Mg + and Ca + was investigated. The enzyme was activated by Mg2+ or Ca 2 + and Mg2+-ATPase was furthe...
Wheat seedlings were grown hydroponically in absence and presence of 100 mM NaCl for 7 d. Cell membrane permeability to nonelectrolytes
and water was determined by the plasmometric method for individual intact cells. NaCl increased membrane permeability to urea,
methylurea and ethylurea and decreased permeability to water. Membrane lipid partiality...
This research was undertaken to study ionic (NaCl) and osmotic (mannitol) effects on the plasma membrane properties of inner epidermal cells of onion bulb scales. The influence of Ca2+ in counteracting the Na-induced cellular alterations was also studied. Cell membrane permeability for individual intact cells and cell viability were determined by t...
10-d-old wheat seedlings were grown hydroponically in presence and absence of 100 mM NaCl for 7 d. Salt stress decreased growth
of shoots and roots of both cultivars; fresh mass of sensitive cultivar being more affected. NaCl increased membrane permeability
to urea, methylurea and ethylurea and decreased membrane partiality in root cortex cells of...
Cell solute potential and cytoplasmic viscosity in four lines of wheat (Triticum aestivum L.) and two cultivars of barley (Hordeum vulgare L.) differing in their relative salt resistance were investigated. Seedlings were grown in ¼-strength Hoagland solution with and without 100mM NaCl (219 mOsm; for Hordeum, additionally isosmolal polyethylene gly...
Salinity effects on the cell membranes of four lines of wheat ( Triticum aestivum L.). and two cultivars of barley ( Hordeum vulgare L.), differing in salt resistance were investigated. Plants were grown for 10 days in 1/4‐strength Hoagland solution and then for 5 more days in 1/4‐strength Hoagland with and without NaCl (100 m M ) or (for Hordeum o...
Thesis (Ph. D.)--University of Minnesota, 1990. Includes bibliographical references (leaves 104-110). Photocopy.