sana munir - Academia.edu (original) (raw)

Papers by sana munir

Cr(C0)3 has been .prepared and characterized by elemental analysis, IR, ' H NMR, and '% NMR spect... more Cr(C0)3 has been .prepared and characterized by elemental analysis, IR, ' H NMR, and '% NMR spectroscopy, and X-ray diffraction. [CBH5Si(OCHzCH,)3N]Cr(C0)3 crystallizes in the orthorhombic space group Pbca , with a = 12.078 (2) A, b = 12.347 (1) A, c = 21.917 (3) A, and Z = 8. The molecule possesses the usual silatrane skeleton containing a fivecoordinated silicon atom. The N-Si distance (2.108 (5) A) is somewhat shorter than that in phenylsilatrane. This is the fist case where the crystal structure of the silatrane derivative, which acts as a ncoordinating ligand to transition metals, has been determined. This compound is a versatile starting materiil for a wide range of complexes, in particular for those of the general formula [CeH5Si(OCH2CH,),N]Cr(C0),L (

Pollution Research, Jun 30, 2022

Cellular and Molecular Life Sciences, 2022

Among all reactive oxygen species (ROS), hydrogen peroxide (H2O2) takes a central role in regulat... more Among all reactive oxygen species (ROS), hydrogen peroxide (H2O2) takes a central role in regulating plant development and responses to the environment. The diverse role of H2O2 is achieved through its compartmentalized synthesis, temporal control exerted by the antioxidant machinery, and ability to oxidize specific residues of target proteins. Here, we examine the role of H2O2 in stress acclimation beyond the well-studied transcriptional reprogramming, modulation of plant hormonal networks and long-distance signalling waves by highlighting its global impact on the transcriptional regulation and translational machinery.

Ceramics International, 2021

World Journal of Biology and Biotechnology, 2021

Cotton is one of the most important fiber crops, grown all over the world. Genetic variability is... more Cotton is one of the most important fiber crops, grown all over the world. Genetic variability is a crucial factor from evolutionary point of view for crop species. It defines the adaptation of populations by allowing them to alter their genetic constitution in changing environment. Genetic variability in Gossypium hirsutum is declining due to selection pressure, hence causing low yield. Present study was conducted to evaluate ten parental genotypes with their F2 generations to uncover their genetic potential for yield by accessing genetic variability, heritability, genetic advance and association between fiber, yield and yield linked traits. High values of phenotypic and genotypic coefficient of variance were observed for node of first fruiting branch, monopodia per plant, boll weight, fiber strength and yield per plant. All morphological and fiber quality traits represented broad sense heritability ranging from 51% to 90%. High value of genetic advance was shown by plant height an...

Journal of Saudi Chemical Society, 2021

Tarım Bilimleri Dergisi, 2021

This research was planned to study the heritability (broad sense), correlation, genetic advance a... more This research was planned to study the heritability (broad sense), correlation, genetic advance and behavior of different characters in segregating population of upland cotton. The material consists of segregating population of fourteen crosses along with their seven parents. Parental varieties and segregating population show significant difference for all traits under the study. Plant height, ginning out turn (GOT), bolls per plant and yield per plant showed heritability ranging from 78.9 to 27.3. Significant genotypic correlation of yield with plant height was 0.698, bolls per plant was 0.930, GOT was 0.692, fiber strength was 0.548 and with fiber fineness was 0.435. Phenotypic correlation of yield per plant with plant height was 0.520, boll per plant was 0.894 and GOT was 0.476. It can be suggested that plant height, GOT and bolls per plant are important yield contributing traits as they are positively correlated with seed cotton yield per plant. High value for bolls per plant, GOT and yield per plant was recorded in BH-167 × V4 and CIM-534 × V4, which can be utilized in future breeding program.

Advanced Powder Technology, 2021

Abstract A cost-effective ultrasonication approach was employed to synthesize NiFe2O4/MXene heter... more Abstract A cost-effective ultrasonication approach was employed to synthesize NiFe2O4/MXene heterostructures. The as-synthesized heterostructures demonstrated outstanding photodegradation performance and anti-bacterial activity as compared to individual NiFe2O4 (NiFe) or MXene. The NiFe nanoparticles (NPs) helped in effectively preventing the re-stacking of MXene flakes and in increasing the surface area of the heterostructure. The obtained sheet-sheet linkage provided an admirable opportunity for excellent wastewater treatment and antibacterial activity. The photocatalytic degradation of organic pollutants by the introduced photocatalyst NiFe/MXene heterostructures has been observed to be about 4 and 6.72 times boosted compared to MXene and NiFe, respectively. Furthermore, the heterostructure materials demonstrated outstanding anti-bacterial activity against gram negative E-coli bacteria, while the mechanism of methylene blue dye degradation by NiFe/MXene was clarified through kinetic studies of the degradation process. We hope this work will be considered a significant scientific contribution for young researchers dealing with water desalination.

Energy & Fuels, 2021

Recently, the MXene itself and its composites with various metal oxides have shown excellent elec... more Recently, the MXene itself and its composites with various metal oxides have shown excellent electrochemical performance due to the presence of multiple oxidation states. However, the restacking of...

ACS Omega, 2020

Recently, a new class of two-dimensional (2D) materials, called MXene, consisting of layers of tr... more Recently, a new class of two-dimensional (2D) materials, called MXene, consisting of layers of transition-metal carbides and nitrides/carbonitrides has been introduced. MXene, a multifunctional material with hydrophilic nature and excellent electrical conductivity and chemical stabilities, can be applied in diverse research areas such as energy harvesting and its storage, water purification, thermal dissipation, and gas sensing. To achieve the best quality of MXene, optimization of some important synthetic parameters is highly required such as an optimized etchant concentration to remove an "A" element from the MAX phase and sonication time for the efficient exfoliation of MXene flakes. Besides, there is a need to disclose that particular solvent through which intercalation can easily be achieved. In this work, we optimized the abovementioned critical parameters for the synthesis of good-quality MXene. Our results clearly explain the variations in the quality of MXene under applied etchant concentrations, solvents for better intercalation, and optimization of sonication time for better exfoliation. The obtained results suggest that 30% HF as an etchant, dimethyl sulfoxide (DMSO) as a solvent, and 135 min as the sonication time are effective parameters for the synthesis of good-quality MXene. We expect that this report will be helpful for the young research community to synthesize good-quality MXene with the required properties.

Pakistan Journal of Botany, 2020

In current study eleven Brassica genotypes, with diverse range of response to Alternaria black sp... more In current study eleven Brassica genotypes, with diverse range of response to Alternaria black spot disease (ABSD), were evaluated to assess the role of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) in disease resistance. Post-infectional POD and SOD activities increased the resistance in genotypes. Genotype BC9 accumulated highest POD and SOD activity, while lowest was observed in susceptible genotype BC1, which showed maximum ABSD incidence. The significant (p≤0.01) negative correlation was found between pre-and post-infectional POD, SOD activities and percent disease index (%DI). In contrast, post-infectional CAT activity was lower than pre-infectional CAT activity except in genotype BC3. So, there was non-significant correlation between pre-and post-infection CAT activity and % DI. It can be proposed that CAT may have not significant role in disease resistance and it is predicted that such CAT activity is due to its enzyme inhibition by ABSD. Correlative evidence established the role of POD and SOD in black spot disease resistance in Brassica. The SOD and POD activities can be utilized as biochemical markers in screening of Brassica germplasm to differentiate resistant genotypes against ABSD.

International Journal of Agriculture and Biology, 2018

Rice (Oryza sativa) falls among the staple food crops in different parts of the globe. In current... more Rice (Oryza sativa) falls among the staple food crops in different parts of the globe. In current scenario of climate change, drought stress leads to significant decrease in crop production. It has negative effect on rice growth and development by affecting cellular, physiological and molecular processes. Photo-respiration increases under drought stress leads to overproduction of reactive oxygen species (ROS) in different organelles of the cell like chloroplasts, mitochondria and peroxisomes etc., which induce severe oxidative stress in rice. Over production of ROS can cause damage to proteins, lipids and DNA leading to lipid peroxidation, proteins oxidation, mutation, DNA damage that can lead to cell death. Under drought stress, ROS turn over in various organelles overload antioxidant quenching mechanism leading to oxidative damage. Oxidative stress can be overcome by the scavenging system, which consists of enzymatic and non-enzymatic antioxidants. Moreover, ROS also acts as signaling molecule and triggers defense mechanism through specific signal transduction network under stress. Under stress condition, activation of molecular cascades is initiated through the perception of stress that leads to the activation of signal transduction pathway including expression of transcription factors and stress related genes. Understanding of this regulatory mechanism of plant development and growth in drought-ROS stress can be promising in the development of improved transgenic rice under this stress. This review will provide an overview of ROS synthesis and signaling pathway under drought condition in rice.

Pakistan Journal of Botany, 2018

Current experiment is conducted to study correlation and path analysis among morphological traits... more Current experiment is conducted to study correlation and path analysis among morphological traits and their contribution towards yield under normal and drought stress using twenty diverse rice genotypes at

Pakistan Journal of Agricultural Research, 2020

Czech Journal of Genetics and Plant Breeding, 2018

Combining ability analysis was performed in order to identify high-yielding genotypes and hybrids... more Combining ability analysis was performed in order to identify high-yielding genotypes and hybrids. Six lines were crossed with three testers using a line × tester mating design. General combining ability (GCA) of parents, specific combining ability (SCA) of hybrids and gene action for several yield components and fibre were studied in the experiment. Additive gene action was observed in most traits except bolls/plant, sympodia/plant, monopodia/plant, total nodes, seed index, lint/seed, staple strength and seed cotton yield/plant which were influenced by non-additive gene action. GCA revealed that Giza-7 was a good general combiner for staple length, staple strength, seed index, boll weight, bolls/plant and monopodia/plant and BH-167 was good for ginning outturn (GOT) and sympodia/plant. Results of SCA values for hybrids indicated, that the cross Giza-7 × MNH-886 was a superior specific combiner for staple length, monopodia/plant, staple strength and seed cotton yield/plant; CIM-554 ...

Genetics and Molecular Research, 2016

Interspecific and intraspecific hybrids show varying degrees of heterosis for yield and yield com... more Interspecific and intraspecific hybrids show varying degrees of heterosis for yield and yield components. Yield-component traits have complex genetic relationships with each other. To determine the relationship of yield-component traits and fiber traits with seed cotton yield, six lines (Bt. CIM-599, CIM-573, MNH-786, CIM-554, BH-167, and GIZA-7) and three test lines (MNH-886, V4, and CIM-557) were crossed in a line x tester mating design. Heterosis was observed for seed cotton yield, fiber traits, and for other yield-component traits. Heterosis in interspecific hybrids for seed cotton yield was more prominent than in intraspecific hybrids. The interspecific hybrid Giza-7 x MNH-886 had the highest heterosis (114.77), while among intraspecific hybrids, CIM-554 x CIM-557 had the highest heterosis (61.29) for seed cotton yield. ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 15 (2): gmr.15028083 A major trait contributing to seed cotton yield was bolls/plant followed by boll weight. Correlation studies revealed that bolls/plant, boll weight, lint weight/boll, lint index, seed index, lint/seed, staple length, and staple strength were significantly and positively associated with seed cotton yield. Selection based on boll weight, boll number, lint weight/boll, and lint index will be helpful for improving cotton seed yield.

Journal of Molecular Catalysis A: Chemical, 2014

Bismuth oxyhalide and its composite belong to a new family of visible light driven photocatalysts... more Bismuth oxyhalide and its composite belong to a new family of visible light driven photocatalysts and attract more and more attention because of their interesting structures dependent on the photocatalytic performance arisen from their layered structures interleaved with [Bi 2 O 2 ] slabs and double halogen atoms slabs. An effective and simple strategy to improve the photocatalytic activity of a photocatalyst is the construction of a heterostructure, as the heterojunction has great potential in tuning the desired electronic properties of the composite photocatalysts and efficiently separating the photogenerated electron-hole pairs. This is the first report that a series of BiO x Cl y /BiO m Br n heterojunctions are prepared using controlled hydrothermal methods. The compositions and morphologies of BiO x Cl y /BiO m Br n could be controlled by adjusting some growth parameters, including reaction pH, time, and temperature. The products are characterized by XRD, SEM-EDS, HR-TEM, DR-UV, BET, CL, and HR-XPS.

Cr(C0)3 has been .prepared and characterized by elemental analysis, IR, ' H NMR, and '% NMR spect... more Cr(C0)3 has been .prepared and characterized by elemental analysis, IR, ' H NMR, and '% NMR spectroscopy, and X-ray diffraction. [CBH5Si(OCHzCH,)3N]Cr(C0)3 crystallizes in the orthorhombic space group Pbca , with a = 12.078 (2) A, b = 12.347 (1) A, c = 21.917 (3) A, and Z = 8. The molecule possesses the usual silatrane skeleton containing a fivecoordinated silicon atom. The N-Si distance (2.108 (5) A) is somewhat shorter than that in phenylsilatrane. This is the fist case where the crystal structure of the silatrane derivative, which acts as a ncoordinating ligand to transition metals, has been determined. This compound is a versatile starting materiil for a wide range of complexes, in particular for those of the general formula [CeH5Si(OCH2CH,),N]Cr(C0),L (

Pollution Research, Jun 30, 2022

Cellular and Molecular Life Sciences, 2022

Among all reactive oxygen species (ROS), hydrogen peroxide (H2O2) takes a central role in regulat... more Among all reactive oxygen species (ROS), hydrogen peroxide (H2O2) takes a central role in regulating plant development and responses to the environment. The diverse role of H2O2 is achieved through its compartmentalized synthesis, temporal control exerted by the antioxidant machinery, and ability to oxidize specific residues of target proteins. Here, we examine the role of H2O2 in stress acclimation beyond the well-studied transcriptional reprogramming, modulation of plant hormonal networks and long-distance signalling waves by highlighting its global impact on the transcriptional regulation and translational machinery.

Ceramics International, 2021

World Journal of Biology and Biotechnology, 2021

Cotton is one of the most important fiber crops, grown all over the world. Genetic variability is... more Cotton is one of the most important fiber crops, grown all over the world. Genetic variability is a crucial factor from evolutionary point of view for crop species. It defines the adaptation of populations by allowing them to alter their genetic constitution in changing environment. Genetic variability in Gossypium hirsutum is declining due to selection pressure, hence causing low yield. Present study was conducted to evaluate ten parental genotypes with their F2 generations to uncover their genetic potential for yield by accessing genetic variability, heritability, genetic advance and association between fiber, yield and yield linked traits. High values of phenotypic and genotypic coefficient of variance were observed for node of first fruiting branch, monopodia per plant, boll weight, fiber strength and yield per plant. All morphological and fiber quality traits represented broad sense heritability ranging from 51% to 90%. High value of genetic advance was shown by plant height an...

Journal of Saudi Chemical Society, 2021

Tarım Bilimleri Dergisi, 2021

This research was planned to study the heritability (broad sense), correlation, genetic advance a... more This research was planned to study the heritability (broad sense), correlation, genetic advance and behavior of different characters in segregating population of upland cotton. The material consists of segregating population of fourteen crosses along with their seven parents. Parental varieties and segregating population show significant difference for all traits under the study. Plant height, ginning out turn (GOT), bolls per plant and yield per plant showed heritability ranging from 78.9 to 27.3. Significant genotypic correlation of yield with plant height was 0.698, bolls per plant was 0.930, GOT was 0.692, fiber strength was 0.548 and with fiber fineness was 0.435. Phenotypic correlation of yield per plant with plant height was 0.520, boll per plant was 0.894 and GOT was 0.476. It can be suggested that plant height, GOT and bolls per plant are important yield contributing traits as they are positively correlated with seed cotton yield per plant. High value for bolls per plant, GOT and yield per plant was recorded in BH-167 × V4 and CIM-534 × V4, which can be utilized in future breeding program.

Advanced Powder Technology, 2021

Abstract A cost-effective ultrasonication approach was employed to synthesize NiFe2O4/MXene heter... more Abstract A cost-effective ultrasonication approach was employed to synthesize NiFe2O4/MXene heterostructures. The as-synthesized heterostructures demonstrated outstanding photodegradation performance and anti-bacterial activity as compared to individual NiFe2O4 (NiFe) or MXene. The NiFe nanoparticles (NPs) helped in effectively preventing the re-stacking of MXene flakes and in increasing the surface area of the heterostructure. The obtained sheet-sheet linkage provided an admirable opportunity for excellent wastewater treatment and antibacterial activity. The photocatalytic degradation of organic pollutants by the introduced photocatalyst NiFe/MXene heterostructures has been observed to be about 4 and 6.72 times boosted compared to MXene and NiFe, respectively. Furthermore, the heterostructure materials demonstrated outstanding anti-bacterial activity against gram negative E-coli bacteria, while the mechanism of methylene blue dye degradation by NiFe/MXene was clarified through kinetic studies of the degradation process. We hope this work will be considered a significant scientific contribution for young researchers dealing with water desalination.

Energy & Fuels, 2021

Recently, the MXene itself and its composites with various metal oxides have shown excellent elec... more Recently, the MXene itself and its composites with various metal oxides have shown excellent electrochemical performance due to the presence of multiple oxidation states. However, the restacking of...

ACS Omega, 2020

Recently, a new class of two-dimensional (2D) materials, called MXene, consisting of layers of tr... more Recently, a new class of two-dimensional (2D) materials, called MXene, consisting of layers of transition-metal carbides and nitrides/carbonitrides has been introduced. MXene, a multifunctional material with hydrophilic nature and excellent electrical conductivity and chemical stabilities, can be applied in diverse research areas such as energy harvesting and its storage, water purification, thermal dissipation, and gas sensing. To achieve the best quality of MXene, optimization of some important synthetic parameters is highly required such as an optimized etchant concentration to remove an "A" element from the MAX phase and sonication time for the efficient exfoliation of MXene flakes. Besides, there is a need to disclose that particular solvent through which intercalation can easily be achieved. In this work, we optimized the abovementioned critical parameters for the synthesis of good-quality MXene. Our results clearly explain the variations in the quality of MXene under applied etchant concentrations, solvents for better intercalation, and optimization of sonication time for better exfoliation. The obtained results suggest that 30% HF as an etchant, dimethyl sulfoxide (DMSO) as a solvent, and 135 min as the sonication time are effective parameters for the synthesis of good-quality MXene. We expect that this report will be helpful for the young research community to synthesize good-quality MXene with the required properties.

Pakistan Journal of Botany, 2020

In current study eleven Brassica genotypes, with diverse range of response to Alternaria black sp... more In current study eleven Brassica genotypes, with diverse range of response to Alternaria black spot disease (ABSD), were evaluated to assess the role of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) in disease resistance. Post-infectional POD and SOD activities increased the resistance in genotypes. Genotype BC9 accumulated highest POD and SOD activity, while lowest was observed in susceptible genotype BC1, which showed maximum ABSD incidence. The significant (p≤0.01) negative correlation was found between pre-and post-infectional POD, SOD activities and percent disease index (%DI). In contrast, post-infectional CAT activity was lower than pre-infectional CAT activity except in genotype BC3. So, there was non-significant correlation between pre-and post-infection CAT activity and % DI. It can be proposed that CAT may have not significant role in disease resistance and it is predicted that such CAT activity is due to its enzyme inhibition by ABSD. Correlative evidence established the role of POD and SOD in black spot disease resistance in Brassica. The SOD and POD activities can be utilized as biochemical markers in screening of Brassica germplasm to differentiate resistant genotypes against ABSD.

International Journal of Agriculture and Biology, 2018

Rice (Oryza sativa) falls among the staple food crops in different parts of the globe. In current... more Rice (Oryza sativa) falls among the staple food crops in different parts of the globe. In current scenario of climate change, drought stress leads to significant decrease in crop production. It has negative effect on rice growth and development by affecting cellular, physiological and molecular processes. Photo-respiration increases under drought stress leads to overproduction of reactive oxygen species (ROS) in different organelles of the cell like chloroplasts, mitochondria and peroxisomes etc., which induce severe oxidative stress in rice. Over production of ROS can cause damage to proteins, lipids and DNA leading to lipid peroxidation, proteins oxidation, mutation, DNA damage that can lead to cell death. Under drought stress, ROS turn over in various organelles overload antioxidant quenching mechanism leading to oxidative damage. Oxidative stress can be overcome by the scavenging system, which consists of enzymatic and non-enzymatic antioxidants. Moreover, ROS also acts as signaling molecule and triggers defense mechanism through specific signal transduction network under stress. Under stress condition, activation of molecular cascades is initiated through the perception of stress that leads to the activation of signal transduction pathway including expression of transcription factors and stress related genes. Understanding of this regulatory mechanism of plant development and growth in drought-ROS stress can be promising in the development of improved transgenic rice under this stress. This review will provide an overview of ROS synthesis and signaling pathway under drought condition in rice.

Pakistan Journal of Botany, 2018

Current experiment is conducted to study correlation and path analysis among morphological traits... more Current experiment is conducted to study correlation and path analysis among morphological traits and their contribution towards yield under normal and drought stress using twenty diverse rice genotypes at

Pakistan Journal of Agricultural Research, 2020

Czech Journal of Genetics and Plant Breeding, 2018

Combining ability analysis was performed in order to identify high-yielding genotypes and hybrids... more Combining ability analysis was performed in order to identify high-yielding genotypes and hybrids. Six lines were crossed with three testers using a line × tester mating design. General combining ability (GCA) of parents, specific combining ability (SCA) of hybrids and gene action for several yield components and fibre were studied in the experiment. Additive gene action was observed in most traits except bolls/plant, sympodia/plant, monopodia/plant, total nodes, seed index, lint/seed, staple strength and seed cotton yield/plant which were influenced by non-additive gene action. GCA revealed that Giza-7 was a good general combiner for staple length, staple strength, seed index, boll weight, bolls/plant and monopodia/plant and BH-167 was good for ginning outturn (GOT) and sympodia/plant. Results of SCA values for hybrids indicated, that the cross Giza-7 × MNH-886 was a superior specific combiner for staple length, monopodia/plant, staple strength and seed cotton yield/plant; CIM-554 ...

Genetics and Molecular Research, 2016

Interspecific and intraspecific hybrids show varying degrees of heterosis for yield and yield com... more Interspecific and intraspecific hybrids show varying degrees of heterosis for yield and yield components. Yield-component traits have complex genetic relationships with each other. To determine the relationship of yield-component traits and fiber traits with seed cotton yield, six lines (Bt. CIM-599, CIM-573, MNH-786, CIM-554, BH-167, and GIZA-7) and three test lines (MNH-886, V4, and CIM-557) were crossed in a line x tester mating design. Heterosis was observed for seed cotton yield, fiber traits, and for other yield-component traits. Heterosis in interspecific hybrids for seed cotton yield was more prominent than in intraspecific hybrids. The interspecific hybrid Giza-7 x MNH-886 had the highest heterosis (114.77), while among intraspecific hybrids, CIM-554 x CIM-557 had the highest heterosis (61.29) for seed cotton yield. ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 15 (2): gmr.15028083 A major trait contributing to seed cotton yield was bolls/plant followed by boll weight. Correlation studies revealed that bolls/plant, boll weight, lint weight/boll, lint index, seed index, lint/seed, staple length, and staple strength were significantly and positively associated with seed cotton yield. Selection based on boll weight, boll number, lint weight/boll, and lint index will be helpful for improving cotton seed yield.

Journal of Molecular Catalysis A: Chemical, 2014

Bismuth oxyhalide and its composite belong to a new family of visible light driven photocatalysts... more Bismuth oxyhalide and its composite belong to a new family of visible light driven photocatalysts and attract more and more attention because of their interesting structures dependent on the photocatalytic performance arisen from their layered structures interleaved with [Bi 2 O 2 ] slabs and double halogen atoms slabs. An effective and simple strategy to improve the photocatalytic activity of a photocatalyst is the construction of a heterostructure, as the heterojunction has great potential in tuning the desired electronic properties of the composite photocatalysts and efficiently separating the photogenerated electron-hole pairs. This is the first report that a series of BiO x Cl y /BiO m Br n heterojunctions are prepared using controlled hydrothermal methods. The compositions and morphologies of BiO x Cl y /BiO m Br n could be controlled by adjusting some growth parameters, including reaction pH, time, and temperature. The products are characterized by XRD, SEM-EDS, HR-TEM, DR-UV, BET, CL, and HR-XPS.